Develop Reference

Android: disable button when TextView match value

I am learning android and here struggling to disable the button id btnWicketIndia when TextView id wicketsIndiaText has " \ 10 " value.
Also please tell me the way I write code is correct or can optimize.
MainActivity.java
package me.jatinsoni.cricketscorecard;
import android.annotation.SuppressLint;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
int scoreIndia = 0;
int wicketsIndia = 0;
int scoreSA = 0;
int wicketsSA = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// India Buttons
Button btnSixerIndia = findViewById(R.id.sixerIndia);
Button btnFourIndia = findViewById(R.id.fourIndia);
Button btnSingleIndia = findViewById(R.id.singleIndia);
Button btnTwoIndia = findViewById(R.id.twoIndia);
Button btnNoIndia = findViewById(R.id.noIndia);
Button btnWideIndia = findViewById(R.id.wideIndia);
Button btnWicketIndia = findViewById(R.id.wicketIndia);
// South Africa Buttons
Button btnSixerSA = findViewById(R.id.sixerSA);
Button btnFourSA = findViewById(R.id.fourSA);
Button btnSingleSA = findViewById(R.id.singleSA);
Button btnTwoSA = findViewById(R.id.twoSA);
Button btnNoSA = findViewById(R.id.noSA);
Button btnWideSA = findViewById(R.id.wideSA);
Button btnWicketSA = findViewById(R.id.wicketSA);
// Reset button
Button btnResetScore = findViewById(R.id.resetScore);
btnSixerIndia.setOnClickListener(this);
btnFourIndia.setOnClickListener(this);
btnSingleIndia.setOnClickListener(this);
btnTwoIndia.setOnClickListener(this);
btnNoIndia.setOnClickListener(this);
btnWideIndia.setOnClickListener(this);
btnWicketIndia.setOnClickListener(this);
btnSixerSA.setOnClickListener(this);
btnFourSA.setOnClickListener(this);
btnSingleSA.setOnClickListener(this);
btnTwoSA.setOnClickListener(this);
btnNoSA.setOnClickListener(this);
btnWideSA.setOnClickListener(this);
btnWicketSA.setOnClickListener(this);
btnResetScore.setOnClickListener(this);
displayScoreIndia(scoreIndia, wicketsIndia);
displayScoreSA(scoreSA, wicketsSA);
}
#Override
public void onClick(View v) {
// Get Buttons IDs
switch (v.getId()) {
// India Buttons
case R.id.sixerIndia: {
scoreIndia += 6;
displayScoreIndia(scoreIndia, wicketsIndia);
break;
}
case R.id.fourIndia: {
scoreIndia += 4;
displayScoreIndia(scoreIndia, wicketsIndia);
break;
}
case R.id.singleIndia: {
scoreIndia += 1;
displayScoreIndia(scoreIndia, wicketsIndia);
break;
}
case R.id.twoIndia: {
scoreIndia += 2;
displayScoreIndia(scoreIndia, wicketsIndia);
break;
}
case R.id.noIndia: {
scoreIndia += 1;
displayScoreIndia(scoreIndia, wicketsIndia);
break;
}
case R.id.wideIndia: {
scoreIndia += 1;
displayScoreIndia(scoreIndia, wicketsIndia);
break;
}
case R.id.wicketIndia: {
if (String.valueOf(wicketsIndia).equals(" / 10")) {
btnWicketIndia.setEnabled(false);
}
wicketsIndia += 1;
displayScoreIndia(scoreIndia, wicketsIndia);
break;
}
// South Africa Buttons
case R.id.sixerSA: {
scoreSA += 6;
displayScoreSA(scoreSA, wicketsSA);
break;
}
case R.id.fourSA: {
scoreSA += 4;
displayScoreSA(scoreSA, wicketsSA);
break;
}
case R.id.singleSA: {
scoreSA += 1;
displayScoreSA(scoreSA, wicketsSA);
break;
}
case R.id.twoSA: {
scoreSA += 2;
displayScoreSA(scoreSA, wicketsSA);
break;
}
case R.id.noSA: {
scoreSA += 1;
displayScoreSA(scoreSA, wicketsSA);
break;
}
case R.id.wideSA: {
scoreSA += 1;
displayScoreSA(scoreSA, wicketsSA);
break;
}
case R.id.wicketSA: {
wicketsSA += 1;
displayScoreSA(scoreSA, wicketsSA);
break;
}
case R.id.resetScore: {
scoreIndia = 0;
scoreSA = 0;
wicketsIndia = 0;
wicketsSA = 0;
displayScoreIndia(scoreIndia, wicketsIndia);
displayScoreSA(scoreSA, wicketsSA);
break;
}
}
}
#SuppressLint("SetTextI18n")
public void displayScoreIndia(int score, int wickets) {
TextView scoreIndiaText = findViewById(R.id.scoreIndiaText);
TextView wicketsIndiaText = findViewById(R.id.wicketsIndiaText);
scoreIndiaText.setText(String.valueOf(score));
wicketsIndiaText.setText(" / " + String.valueOf(wickets));
}
#SuppressLint("SetTextI18n")
public void displayScoreSA(int score, int wickets) {
TextView scoreSAText = findViewById(R.id.scoreSAText);
TextView wicketsSAText = findViewById(R.id.wicketsSAText);
scoreSAText.setText(String.valueOf(score));
wicketsSAText.setText(" / " + String.valueOf(wickets));
}
}
XML Code
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/cricketground" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#99000000">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="horizontal">
<!-- INDIA COLUMN -->
<LinearLayout
android:orientation="vertical"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center_horizontal">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="fitXY"
android:layout_marginTop="16dp"
android:src="#drawable/ic_india" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="INDIA"
android:textColor="#FFFFFF"/>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:layout_marginBottom="32dp"
android:gravity="center_horizontal">
<TextView
android:id="#+id/scoreIndiaText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="0"
android:textSize="40sp"
android:fontFamily="sans-serif-thin"
android:textColor="#FFFFFF"/>
<TextView
android:id="#+id/wicketsIndiaText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" / 0"
android:textSize="20sp"
android:fontFamily="sans-serif-thin"
android:textColor="#FFFFFF"/>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal">
<Button
android:id="#+id/sixerIndia"
style="#style/CircleButton"
android:text="Sixer"/>
<Button
android:id="#+id/fourIndia"
style="#style/CircleButton"
android:text="Four"/>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal">
<Button
android:id="#+id/singleIndia"
style="#style/CircleButton"
android:text="Single"/>
<Button
android:id="#+id/twoIndia"
style="#style/CircleButton"
android:text="Two"/>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal">
<Button
android:id="#+id/noIndia"
style="#style/CircleButton"
android:text="No"/>
<Button
android:id="#+id/wideIndia"
style="#style/CircleButton"
android:text="Wide"/>
</LinearLayout>
<Button
android:id="#+id/wicketIndia"
style="#style/RoundedButtons"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginRight="16dp"
android:layout_marginLeft="16dp"
android:layout_gravity="center_horizontal"
android:text="wicket" />
</LinearLayout>
<!-- PARTITION -->
<View
android:layout_width="1dp"
android:layout_height="match_parent"
android:background="#33FFFFFF" />
<!--SOUTH AFRICA COLUMN -->
<LinearLayout
android:orientation="vertical"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center_horizontal">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="fitXY"
android:layout_marginTop="16dp"
android:src="#drawable/ic_south_africa" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="SOUTH AFRICA"
android:textColor="#FFFFFF"/>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:layout_marginBottom="32dp"
android:gravity="center_horizontal">
<TextView
android:id="#+id/scoreSAText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="0"
android:textSize="40sp"
android:fontFamily="sans-serif-thin"
android:textColor="#FFFFFF"/>
<TextView
android:id="#+id/wicketsSAText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" / 0"
android:textSize="20sp"
android:fontFamily="sans-serif-thin"
android:textColor="#FFFFFF"/>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal">
<Button
android:id="#+id/sixerSA"
style="#style/CircleButton"
android:text="Sixer"/>
<Button
android:id="#+id/fourSA"
style="#style/CircleButton"
android:text="Four"/>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal">
<Button
android:id="#+id/singleSA"
style="#style/CircleButton"
android:text="Single"/>
<Button
android:id="#+id/twoSA"
style="#style/CircleButton"
android:text="Two"/>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal">
<Button
android:id="#+id/noSA"
style="#style/CircleButton"
android:text="No"/>
<Button
android:id="#+id/wideSA"
style="#style/CircleButton"
android:text="Wide"/>
</LinearLayout>
<Button
android:id="#+id/wicketSA"
style="#style/RoundedButtons"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginRight="16dp"
android:layout_marginLeft="16dp"
android:layout_gravity="center_horizontal"
android:text="wicket" />
</LinearLayout>
</LinearLayout>
<Button
android:id="#+id/resetScore"
style="?android:attr/borderlessButtonStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="reset"
android:textColor="#FFFFFF"
android:layout_gravity="center_horizontal"/>
</LinearLayout>
</FrameLayout>
</RelativeLayout>

You are comparing int. So just use
if (wicketsIndia == 10) {
btnWicketIndia.setEnabled(false);
}
EDIT:
int wicketsSA = 0;
Button btnWicketIndia; // DECLARE IT HERE
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
...
btnWicketIndia = findViewById(R.id.wicketIndia); // ASSIGN HERE
...
}

I'd have a look at the pattern you have chosen.
Use a ViewModel to hold the scores and wickets of the "home team" and the "away team".
Make some observers of the data in your activity/widget and respond to the changes.
You will need to add Google's/Android dependency to your App Gradle file:
// ViewModel and LiveData
implementation "android.arch.lifecycle:extensions:1.1.1"
Here is an example showing a ViewModel and an Activity using an observer like pattern:
import android.arch.lifecycle.Observer;
import android.arch.lifecycle.ViewModelProviders;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.FragmentActivity;
import android.view.View;
//Extend FRAGMENT ACTIVITY
public class MainActivity extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Get handle on the ViewModel:
final ViewModelMain viewModelMain = ViewModelProviders.of(this).get(ViewModelMain.class);
//Observe the data in the viewmodel class:
viewModelMain.homeWickets.observe(this, new Observer<Integer>() {
#Override
public void onChanged(#Nullable Integer integer) {
//MAKE CHANGES WHEN THE VALUE FOR THE HOME WICKETS CHANGE LIKE SET ON CLICK METHODS TO NULL?
}
});
viewModelMain.homeScore.observe(this, new Observer<Integer>() {
#Override
public void onChanged(#Nullable Integer integer) {
//MAKE CHANGES WHEN THE VALUE FOR THE HOME SCORE CHANGE LIKE SET ON CLICK METHODS TO NULL?
}
});
//HOW TO SET A VIEW MODEL VALUE LIKE AFTER CLICKING A BUTTON:
View v = new View(getApplicationContext());
v.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
viewModelMain.setHomeScore(viewModelMain.getHomeScore().getValue() + 1);
}
});
}
}
import android.app.Application;
import android.arch.lifecycle.AndroidViewModel;
import android.arch.lifecycle.MutableLiveData;
import android.support.annotation.NonNull;
public class ViewModelMain extends AndroidViewModel {
public ViewModelMain(#NonNull Application application) {
super(application);
// Set all values to 0 when constructed?
this.awayScore.postValue(0);
this.homeScore.postValue(0);
this.homeWickets.postValue(0);
this.awayWickets.postValue(0);
}
public MutableLiveData<Integer> awayScore = new MutableLiveData<>();
public MutableLiveData<Integer> homeScore = new MutableLiveData<>();
public MutableLiveData<Integer> homeWickets = new MutableLiveData<>();
public MutableLiveData<Integer> awayWickets = new MutableLiveData<>();
//SETTERS -> POST THE DATA TO THE MUTABLE FIELDS
public void setAwayScore(Integer awayScore) {
this.awayScore.postValue(awayScore);
}
public void setAwayWickets(Integer awayWickets) {
this.awayWickets.postValue(awayWickets);
}
public void setHomeScore(Integer homeScore) {
this.homeScore.postValue(homeScore);
}
public void setHomeWickets(Integer homeWickets) {
this.homeWickets.postValue(homeWickets);
}
//STANDARD JAVA GETTERS
public MutableLiveData<Integer> getAwayScore() {
return awayScore;
}
public MutableLiveData<Integer> getAwayWickets() {
return awayWickets;
}
public MutableLiveData<Integer> getHomeScore() {
return homeScore;
}
public MutableLiveData<Integer> getHomeWickets() {
return homeWickets;
}
}

\ is a special character. So if you get a text that contains \, you must add \ before.
if (wicketsIndiaText.getText().toString().equals(" \\ 10 ")) {
btnWicketIndia.setEnabled(false);
}

button not functioning?

I created a android studio button for my app and when I click on the register button it doesn't work . I don't get any errors it just doesn't work . When the user clicks the quiz button I want to go to the quiz activity
MainActivity.java
package com.littlekidsmath.yoong.mathlearningforkids;
import android.content.Intent;
import android.content.SharedPreferences;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.ListView;
import android.widget.Spinner;
import android.widget.Switch;
import android.widget.Toast;
import java.util.zip.Inflater;
public class MainActivity extends AppCompatActivity implements View.OnClickListener,AdapterView.OnItemSelectedListener{
Button addBtn, subBtn, multiBtn, divisionBtn,quiz;
String[] levels = {"Easy","Medium","Hard"};
SharedPreferences prefs;
Switch settings;
Spinner language;
public String[] languages = {GameActivity.ENG,GameActivity.ARABIC,"বাংলা",GameActivity.FRENCH,GameActivity.GERMAN,GameActivity.MALAY};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
prefs = getSharedPreferences("MyPref",MODE_PRIVATE);
settings = (Switch) findViewById(R.id.settings);
if(prefs.getBoolean("SOUND", false)){
settings.setChecked(true);
}
settings.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
prefs.edit().putBoolean("SOUND",b).commit();
}
});
addBtn = (Button) findViewById(R.id.addtion);
subBtn = (Button) findViewById(R.id.sub);
multiBtn = (Button) findViewById(R.id.multi);
divisionBtn = (Button) findViewById(R.id.divide);
quiz = (Button) findViewById(R.id.quiz);
language = (Spinner) findViewById(R.id.language);
addBtn.setOnClickListener(this);
subBtn.setOnClickListener(this);
multiBtn.setOnClickListener(this);
divisionBtn.setOnClickListener(this);
quiz.setOnClickListener(this);
language.setOnItemSelectedListener(this);
ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1,languages);
language.setAdapter(adapter);
int pos = 0;
//
for(int i=0;i<languages.length;i++){
if(prefs.getString(GameActivity.LANGUAGE,"").equals(languages[i])){
pos = i;
break;
}
}
language.setSelection(pos);
if(prefs.getString(GameActivity.LANGUAGE,"").equals(GameActivity.BANGLA)){
setBangla();
}else if(prefs.getString(GameActivity.LANGUAGE,"").equals(GameActivity.ARABIC)){
setArabic();
}else if(prefs.getString(GameActivity.LANGUAGE,"").equals(GameActivity.FRENCH)){
setFrence();
}else if(prefs.getString(GameActivity.LANGUAGE,"").equals(GameActivity.GERMAN)){
setGerman();
}else if(prefs.getString(GameActivity.LANGUAGE,"").equals(GameActivity.ENG)){
setEnglish();
}else if(prefs.getString(GameActivity.LANGUAGE,"").equals(GameActivity.MALAY)){
setMalay();
}
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.addtion: {
levelChooseDialog("+");
break;
}
case R.id.sub: {
levelChooseDialog("-");
break;
}
case R.id.multi: {
levelChooseDialog("X");
break;
}
case R.id.divide: {
levelChooseDialog("/");
break;
}
case R.id.quiz: {
Intent intent = new Intent(MainActivity.this, HomeScreen.class);
startActivity(intent);
}
}
}
public void levelChooseDialog(final String operator){
AlertDialog.Builder builder = new AlertDialog.Builder(this);
View view = View.inflate(this,R.layout.level_dialog,null);
builder.setView(view);
ListView listView = (ListView) view.findViewById(R.id.listview);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,levels);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
int level = 0;
if (position == 0){
level = 0;
}else if(position == 1){
level = 1;
}else {
level = 2;
}
startActivity(new Intent(MainActivity.this,LessonActivity.class).putExtra("level",level)
.putExtra("operator",operator));
}
});
builder.create().show();
}
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
prefs.edit().putString(GameActivity.LANGUAGE,languages[position]).commit();
if(prefs.getString(GameActivity.LANGUAGE,"").equals(GameActivity.BANGLA))
{
setBangla();
}else if(prefs.getString(GameActivity.LANGUAGE,"").equals(GameActivity.ARABIC)){
setArabic();
}else if(prefs.getString(GameActivity.LANGUAGE,"").equals(GameActivity.FRENCH)){
setFrence();
}else if(prefs.getString(GameActivity.LANGUAGE,"").equals(GameActivity.GERMAN)){
setGerman();
}else if(prefs.getString(GameActivity.LANGUAGE,"").equals(GameActivity.ENG)){
setEnglish();
}else if(prefs.getString(GameActivity.LANGUAGE,"").equals(GameActivity.MALAY)){
setMalay();
}
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
public void setBangla(){
addBtn.setText(Languages.BANGLA[0]);
subBtn.setText(Languages.BANGLA[1]);
multiBtn.setText(Languages.BANGLA[3]);
divisionBtn.setText(Languages.BANGLA[2]);
settings.setText(Languages.BANGLA[4]);
levels[0] = Languages.BANGLA[7];
levels[1] = Languages.BANGLA[8];
levels[2] = Languages.BANGLA[9];
}
public void setArabic(){
addBtn.setText(Languages.ARABIC[0]);
subBtn.setText(Languages.ARABIC[1]);
multiBtn.setText(Languages.ARABIC[3]);
divisionBtn.setText(Languages.ARABIC[2]);
settings.setText(Languages.ARABIC[4]);
levels[0] = Languages.ARABIC[7];
levels[1] = Languages.ARABIC[8];
levels[2] = Languages.ARABIC[9];
}
public void setMalay(){
addBtn.setText(Languages.MALAY[0]);
subBtn.setText(Languages.MALAY[1]);
multiBtn.setText(Languages.MALAY[3]);
divisionBtn.setText(Languages.MALAY[2]);
settings.setText(Languages.MALAY[4]);
levels[0] = Languages.MALAY[7];
levels[1] = Languages.MALAY[8];
levels[2] = Languages.MALAY[9];
}
public void setFrence(){
addBtn.setText(Languages.FRENCH[0]);
subBtn.setText(Languages.FRENCH[1]);
multiBtn.setText(Languages.FRENCH[3]);
divisionBtn.setText(Languages.FRENCH[2]);
settings.setText(Languages.FRENCH[4]);
levels[0] = Languages.FRENCH[7];
levels[1] = Languages.FRENCH[8];
levels[2] = Languages.FRENCH[9];
}
public void setGerman(){
addBtn.setText(Languages.GERMAN[0]);
subBtn.setText(Languages.GERMAN[1]);
multiBtn.setText(Languages.GERMAN[3]);
divisionBtn.setText(Languages.GERMAN[2]);
settings.setText(Languages.GERMAN[4]);
levels[0] = Languages.GERMAN[7];
levels[1] = Languages.GERMAN[8];
levels[2] = Languages.GERMAN[9];
}
public void setEnglish(){
addBtn.setText(Languages.ENGLISH[0]);
subBtn.setText(Languages.ENGLISH[1]);
multiBtn.setText(Languages.ENGLISH[3]);
divisionBtn.setText(Languages.ENGLISH[2]);
settings.setText(Languages.ENGLISH[4]);
levels[0] = Languages.ENGLISH[7];
levels[1] = Languages.ENGLISH[8];
levels[2] = Languages.ENGLISH[9];
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorAccent"
android:gravity="center_vertical"
android:orientation="vertical"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.littlekidsmath.yoong.mathlearningforkids.MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="#+id/addtion"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:drawablePadding="#dimen/activity_horizontal_margin"
android:drawableTop="#drawable/add"
android:paddingBottom="25dp"
android:paddingTop="25dp"
android:text="Addition" />
<Button
android:id="#+id/sub"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:drawablePadding="#dimen/activity_horizontal_margin"
android:drawableTop="#drawable/minus"
android:paddingBottom="25dp"
android:paddingTop="25dp"
android:text="Subtraction" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="#+id/multi"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:drawablePadding="#dimen/activity_horizontal_margin"
android:drawableTop="#drawable/cancel"
android:paddingBottom="25dp"
android:paddingTop="25dp"
android:text="Multiplication" />
<Button
android:id="#+id/divide"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:drawablePadding="#dimen/activity_horizontal_margin"
android:drawableTop="#drawable/division"
android:paddingBottom="25dp"
android:paddingTop="25dp"
android:text="Division" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="#+id/quiz"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:drawablePadding="#dimen/activity_horizontal_margin"
android:paddingBottom="20dp"
android:paddingTop="20dp"
android:text="Quiz" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
android:padding="#dimen/activity_horizontal_margin">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:text=""
android:textColor="#color/white"
android:textSize="18sp" />
<Switch
android:id="#+id/settings"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:paddingRight="#dimen/activity_horizontal_margin"
android:text="Sound"
android:textColor="#color/white"
android:textSize="18sp" />
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/activity_horizontal_margin"
android:text="Language" />
<Spinner
android:id="#+id/language"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="7dp"
android:background="#color/white"
android:padding="10dp"></Spinner>
</LinearLayout>
Can anyone help please? When click on the quiz button the application will close. I want it to go to quiz page which called HomeScreen.java

looks good to me, did u declare the second activity in the manifest file? :
<activity android:name="HomeScreen"/>
If that doesn't work, use some break points and the debugger, hope it helps.

passing edittext values to another activity getting null values

here's my sample task app, I have six clases Employee, Department, EmployeeActivity , ViewEmployeeInfo, ViewDepartmentInfo,
When user click on add employee it must be navigate to EmployeeActivity, and the same thing when click on department it's navigate to Department class, I created an employee object on EmployeeActivity to send it to ViewEmployeeInfo activity and it must view it on the five EditText that I created it, the problem is that when I Click on Submit button to send data via Intent with putExtra method that takes Serializable object I see no values on EditTexts on anther activity, I tried to send it with regual putExtra method as int,String,String,double,String also got NullPointerException
Here's my code, first this the Employee class
package com.companyactivityexample.companyactivityexample;
import android.widget.Button;
import android.widget.EditText;
import java.io.Serializable;
/**
* Created by MML on 24/12/2017.
*/
public class Employee implements Serializable {
private int id;
private String name;
private String address;
private double salary;
private String job;
public Employee(int id, String name, String address, double salary, String job) {
this.id = id;
this.name = name;
this.address = address;
this.salary = salary;
this.job = job;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public double getSalary() {
return salary;
}
public void setSalary(double salary) {
this.salary = salary;
}
public String getJob() {
return job;
}
public void setJob(String job) {
this.job = job;
}
}
this activity_main
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.companyactivityexample.companyactivityexample.MainActivity"
android:orientation="vertical"
>
<Button
android:id="#+id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="25dp"
android:layout_marginStart="40dp"
android:layout_marginEnd="40dp"
android:layout_marginBottom="10dp"
android:text="Add employee"
android:textSize="25sp"
android:textAllCaps="false"
/>
<Button
android:id="#+id/button2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="40dp"
android:layout_marginEnd="40dp"
android:text="Add department"
android:textSize="25sp"
android:textAllCaps="false"
/>
</LinearLayout>
and this Main Class
`package com.companyactivityexample.companyactivityexample;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
private Button addEmployee;
private Button addDepartment;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
addEmployee = (Button) findViewById(R.id.button1);
addDepartment = (Button) findViewById(R.id.button2);
addEmployee.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent i = new Intent(MainActivity.this,EmployeeActivity.class);
startActivity(i);
}
});
addDepartment.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent i = new Intent(MainActivity.this,Department.class);
startActivity(i);
}
});
}
}
the employee_activity xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center"
>
<EditText
android:id="#+id/empID"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:gravity="center"
android:hint="ID"
android:textSize="25sp"
android:textColorHint="#color/black"
android:inputType="number"
/>
<EditText
android:id="#+id/empName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:gravity="center"
android:hint="Name"
android:textSize="25sp"
android:textColorHint="#color/black"
android:inputType="text"
/>
<EditText
android:id="#+id/empAddress"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:gravity="center"
android:hint="Address"
android:textSize="25sp"
android:textColorHint="#color/black"
android:inputType="text"
/>
<EditText
android:id="#+id/empSalary"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:gravity="center"
android:hint="Salary"
android:textSize="25sp"
android:textColorHint="#color/black"
android:inputType="numberDecimal"
/>
<EditText
android:id="#+id/empJob"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:gravity="center"
android:hint="Job"
android:textSize="25sp"
android:textColorHint="#color/black"
android:inputType="text"
/>
<Button
android:id="#+id/submit"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="40dp"
android:layout_marginEnd="40dp"
android:text="Submit"
android:textSize="25sp"
android:textAllCaps="false"
/>
</LinearLayout>
</ScrollView>
the EmployeeActivity class
package com.companyactivityexample.companyactivityexample;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
/**
* Created by MML on 27/12/2017.
*/
public class EmployeeActivity extends AppCompatActivity {
private EditText editTextID;
private EditText editTextName;
private EditText editTextAddress;
private EditText editTextSalary;
private EditText editTextJob;
private Button submitButton;
private Employee employee1;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.employee_activity);
editTextID = (EditText) findViewById(R.id.empID);
editTextName = (EditText) findViewById(R.id.empName);
editTextAddress = (EditText) findViewById(R.id.empAddress);
editTextSalary = (EditText) findViewById(R.id.empSalary);
editTextJob = (EditText) findViewById(R.id.empJob);
submitButton = (Button) findViewById(R.id.submit);
if(isEmpty(editTextID) || isEmpty(editTextSalary)){
editTextID.setText("0");
editTextSalary.setText("0");
}
employee1 = new Employee(Integer.parseInt(editTextID.getText().toString())
, editTextName.getText().toString(), editTextAddress.getText().toString()
, Double.parseDouble(editTextSalary.getText().toString())
, editTextJob.getText().toString());
submitButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent i = new Intent(EmployeeActivity.this, ViewEmployeeInfo.class);
i.putExtra("emp",employee1);
startActivity(i);
}
});
}
/*i.putExtra("id",id);
i.putExtra("name",name);
i.putExtra("address",address);
i.putExtra("salary",salary);
i.putExtra("job",job);*/
private static boolean isEmpty(EditText etText) {
if (etText.getText().toString().trim().length() > 0)
return false;
return true;
}
}
the view_employee_info activity xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:tools="http://schemas.android.com/tools"
android:fillViewport="true"
tools:context=".ViewEmployeeInfo">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="50dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginStart="20dp"
android:gravity="center"
android:text="ID"
android:textColor="#color/black"
android:textSize="25sp"
/>
<EditText
android:id="#+id/editTextID"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginStart="20dp"
android:inputType="number" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginStart="20dp"
android:gravity="center"
android:text="Name"
android:textColor="#color/black"
android:textSize="25sp"
/>
<EditText
android:id="#+id/editTextName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginStart="20dp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginStart="20dp"
android:gravity="center"
android:text="Address"
android:textColor="#color/black"
android:textSize="25sp"
/>
<EditText
android:id="#+id/editTextAddress"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginStart="20dp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginStart="20dp"
android:gravity="center"
android:text="Salary"
android:textColor="#color/black"
android:textSize="25sp"
/>
<EditText
android:id="#+id/editTextSalary"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginStart="20dp"
android:inputType="numberDecimal" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginStart="20dp"
android:gravity="center"
android:text="Job"
android:textColor="#color/black"
android:textSize="25sp"
/>
<EditText
android:id="#+id/editTextJob"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginStart="20dp" />
</LinearLayout>
<Button
android:id="#+id/editButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="30dp"
android:layout_marginStart="30dp"
android:layout_marginTop="20dp"
android:text="Edit"
android:textAllCaps="false"
android:textSize="25sp" />
</LinearLayout>
</ScrollView>
the ViewEmployeeInfo class
package com.companyactivityexample.companyactivityexample;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
/**
* Created by MML on 24/12/2017.
*/
public class ViewEmployeeInfo extends AppCompatActivity {
private EditText editID;
private EditText editName;
private EditText editAddress;
private EditText editSalary;
private EditText editJob;
private Button editButton;
private Employee employee;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.view_employee_info);
Intent i = getIntent();
employee = (Employee) i.getSerializableExtra("emp");
editID = (EditText) findViewById(R.id.editTextID);
editID.setText(employee.getId() + "");
editName = (EditText) findViewById(R.id.editTextName);
editName.setText(employee.getName());
editAddress = (EditText) findViewById(R.id.editTextAddress);
editAddress.setText(employee.getAddress());
editSalary = (EditText) findViewById(R.id.editTextSalary);
editSalary.setText(employee.getSalary() + "");
editJob = (EditText) findViewById(R.id.editTextJob);
editJob.setText(employee.getJob());
editButton = (Button) findViewById(R.id.editButton);
/*Intent i = getIntent();
int getID = i.getIntExtra("id", 0);
String getName = i.getStringExtra("name");
String getAddress = i.getStringExtra("address");
double getSalary = i.getDoubleExtra("salary", 0.0);
String getJob = i.getStringExtra("job");
editID.setText(getID);
editName.setText(getName);
editAddress.setText(getAddress);
editSalary.setText(getSalary + "");
editJob.setText(getJob);*/
}
}

You put the extra in with key of "emp1" and are trying to retrieve it using a key of "emp" in getSerializableExtra("emp"). Simple typo.
Edit: Not a typo. Instead of putExtra("emp", employee1) , cast like putExtra("emp", (serializable) employee1)

Pass the serializable list using Bundle.Serializable
Intent i = new Intent(EmployeeActivity.this, ViewEmployeeInfo.class);
i.putSerializable("emp",employee1);
startActivity(i);
Instead
Intent i = new Intent(EmployeeActivity.this, ViewEmployeeInfo.class);
i.putExtra("emp",employee1);
startActivity(i);
Receive
Intent i = getIntent();
employee = (Employee) i.getSerializableExtra("emp");

The problem was resolved, it was supposed to put the new object of employee1
inside the action of submit button
employee1 = new Employee(Integer.parseInt(editTextID.getText().toString())
, editTextName.getText().toString(), editTextAddress.getText().toString()
, Double.parseDouble(editTextSalary.getText().toString())
, editTextJob.getText().toString());

onOptionsItemClick or onMenuItemClick not being called

(Very first thing i want to make clear is that i am COMPLETELY NEWBIE, very beginner in android, in fact in programming/coding!)
The menu is referred in onCreateOptionMenu and the calling method is also onOptionsItemSelected to open up menu but the method for each option/item is set as onMenuItemClick and onMenuItemLongClick which is ideal for context menu options/items!
The problem is onMenuItemClick have input parameters as (View v, int position) and I cannot change it to only (View v) or to (MenuItem item).
What I want is clicking on each item of menu should bring out new activity!
I also tried putting all my switch-case-break statements to onOptionsItemSelected method but it is still not working!
I also tried in fragment class, setHasOptionsMenu (true); but it did not work!
onMenuItemClick doesn't get called
(Deprecated) Fragment onOptionsItemSelected not being called
Below is the activity_main_menu.xml layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#color/menu_item_background">
<include layout="#layout/toolbar" />
<FrameLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
Below is the fragment_main.xml layout
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.android.coffeeshop.MainFragment">
<!-- TODO: Update blank fragment layout -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:background="#color/menu_item_background">
<EditText
android:id="#+id/username"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:cursorVisible="true"
android:hint="#string/EditTextHint"
android:inputType="textNoSuggestions" />
<EditText
android:id="#+id/usercontact"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:cursorVisible="true"
android:hint="#string/usercontactHint"
android:inputType="textNoSuggestions" />
<EditText
android:id="#+id/useremail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:cursorVisible="true"
android:hint="#string/useremailHint"
android:inputType="textEmailAddress" />
<TextView
style="#style/HeaderTextStyle"
android:layout_marginTop="16dp"
android:text="#string/Toppings" />
<CheckBox
android:id="#+id/whippedCreamcheckbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:paddingEnd="24dp"
android:paddingLeft="24dp"
android:paddingStart="24dp"
android:text="#string/WhippedCream"
android:textSize="16sp" />
<CheckBox
android:id="#+id/Chocolatebox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:paddingEnd="24dp"
android:paddingLeft="24dp"
android:paddingStart="24dp"
android:text="#string/Chocolate"
android:textSize="16sp" />
<TextView
style="#style/HeaderTextStyle"
android:layout_marginTop="16dp"
android:text="#string/quantity" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_marginTop="16dp"
android:onClick="decrement"
android:text="#string/minus" />
<TextView
android:id="#+id/quantity_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="16dp"
android:text="#string/Zero"
android:textColor="#android:color/black"
android:textSize="20sp" />
<Button
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_marginTop="16dp"
android:onClick="increment"
android:text="#string/plus" />
</LinearLayout>
<TextView
style="#style/HeaderTextStyle"
android:layout_marginTop="16dp"
android:text="#string/OrderSummary" />
<TextView
android:id="#+id/order_summary_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="#string/Price"
android:textColor="#android:color/black"
android:textSize="20sp" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:id="#+id/orderButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:onClick="submitOrder"
android:text="#string/Order" />
<Button
android:id="#+id/placeOrder"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:onClick="placeOrder"
android:text="#string/PlaceOrder" />
</LinearLayout>
</LinearLayout>
</ScrollView>
Below is the MainMenu.java class file from where i am trying to handle fragment menu!
package com.example.android.coffeeshop5profile;
import android.app.ProgressDialog;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.ActionMenuView;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.yalantis.contextmenu.lib.ContextMenuDialogFragment;
import com.yalantis.contextmenu.lib.MenuObject;
import com.yalantis.contextmenu.lib.MenuParams;
import com.yalantis.contextmenu.lib.interfaces.OnMenuItemLongClickListener;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
/**
* This app displays an order form to order coffee.
*/
public class MainMenu extends AppCompatActivity implements ActionMenuView.OnMenuItemClickListener, OnMenuItemLongClickListener {
private FragmentManager fragmentManager;
private ContextMenuDialogFragment mMenuDialogFragment;
int quantity = 1;
int price = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_menu);
fragmentManager = getSupportFragmentManager();
initToolbar();
initMenuFragment();
addFragment(new MainFragment(), true, R.id.container);
}
private void initMenuFragment() {
MenuParams menuParams = new MenuParams();
menuParams.setActionBarSize((int) getResources().getDimension(R.dimen.tool_bar_height));
menuParams.setMenuObjects(getMenuObjects());
menuParams.setClosableOutside(false);
mMenuDialogFragment = ContextMenuDialogFragment.newInstance(menuParams);
mMenuDialogFragment.setItemLongClickListener(this);
}
private List<MenuObject> getMenuObjects() {
List<MenuObject> menuObjects = new ArrayList<>();
MenuObject close = new MenuObject();
close.setResource(R.drawable.icn_close);
MenuObject send = new MenuObject("Send message");
send.setResource(R.drawable.icn_1);
MenuObject like = new MenuObject("Like profile");
Bitmap b = BitmapFactory.decodeResource(getResources(), R.drawable.icn_2);
like.setBitmap(b);
MenuObject addFr = new MenuObject("Add to friends");
BitmapDrawable bd = new BitmapDrawable(getResources(),
BitmapFactory.decodeResource(getResources(), R.drawable.icn_3));
addFr.setDrawable(bd);
MenuObject addFav = new MenuObject("Add to favorites");
addFav.setResource(R.drawable.icn_4);
MenuObject block = new MenuObject("Block user");
block.setResource(R.drawable.icn_5);
menuObjects.add(close);
menuObjects.add(send);
menuObjects.add(like);
menuObjects.add(addFr);
menuObjects.add(addFav);
menuObjects.add(block);
return menuObjects;
}
private void initToolbar() {
Toolbar mToolbar = (Toolbar) findViewById(R.id.toolbar);
TextView mToolBarTextView = (TextView) findViewById(R.id.text_view_toolbar_title);
setSupportActionBar(mToolbar);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowTitleEnabled(false);
mToolbar.setNavigationIcon(R.drawable.btn_back);
mToolbar.setNavigationOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
onBackPressed();
}
});
mToolBarTextView.setText(R.string.title_text);
}
protected void addFragment(Fragment fragment, boolean addToBackStack, int containerId) {
invalidateOptionsMenu();
String backStackName = fragment.getClass().getName();
boolean fragmentPopped = fragmentManager.popBackStackImmediate(backStackName, 0);
if (!fragmentPopped) {
FragmentTransaction transaction = fragmentManager.beginTransaction();
transaction.add(containerId, fragment, backStackName)
.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
if (addToBackStack)
transaction.addToBackStack(backStackName);
transaction.commit();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.context_main_menu, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.context_menu:
if (fragmentManager.findFragmentByTag(ContextMenuDialogFragment.TAG) == null) {
mMenuDialogFragment.show(fragmentManager, ContextMenuDialogFragment.TAG);
}
break;
case R.drawable.icn_3:
Intent userProfileIntent = new Intent(MainMenu.this, UserProfile.class);
MainMenu.this.startActivity(userProfileIntent);
break;
case R.drawable.icn_4:
Intent wishListIntent = new Intent(MainMenu.this, UserProfile.class);
MainMenu.this.startActivity(wishListIntent);
break;
}
return false; //Turning this true or to super.OnOptionsItemSelected did nothing!
}
#Override
public void onBackPressed() {
if (mMenuDialogFragment != null && mMenuDialogFragment.isAdded()) {
mMenuDialogFragment.dismiss();
} else {
finish();
}
}
#Override
public boolean onMenuItemClick(MenuItem item) {
switch (item.getItemId()){
case R.drawable.icn_3:
Intent userProfileIntent = new Intent(MainMenu.this, UserProfile.class);
MainMenu.this.startActivity(userProfileIntent);
break;
case R.drawable.icn_4:
Intent wishListIntent = new Intent(MainMenu.this, UserProfile.class);
MainMenu.this.startActivity(wishListIntent);
break;
} return true;
}
#Override
public void onMenuItemLongClick(View clickedView, int position) {
Toast.makeText(this, "Long clicked on position: " + position, Toast.LENGTH_SHORT).show();
}
public void submitOrder(View view) {
String orderSummaryString = createOrderSummary(quantity);
displayMessage(orderSummaryString);
}
public void placeOrder(View view) {
TextView useremail = (TextView) findViewById(R.id.useremail);
String useremailString = useremail.getText().toString();
String orderSummaryString = createOrderSummary(quantity);
sendMail(useremailString, "Coffee Order By: " + useremailString, orderSummaryString);
}
private void sendMail(String email, String subject, String messageBody) {
Session session = createSessionObject();
try {
Message message = createMessage(email, subject, messageBody, session);
new SendMailTask().execute(message);
} catch (MessagingException | UnsupportedEncodingException e) {
e.printStackTrace();
}
}
private Message createMessage(String email, String subject, String messageBody, Session session)
throws MessagingException, UnsupportedEncodingException {
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress("clientaddress#gmail.com", "Coffee Order By"));
message.addRecipient(Message.RecipientType.TO, new InternetAddress(email, email));
message.setSubject(subject);
message.setText(messageBody);
return message;
}
private Session createSessionObject() {
Properties properties = new Properties();
properties.put("mail.smtp.auth", "true");
properties.put("mail.smtp.starttls.enable", "true");
properties.put("mail.smtp.host", "smtp.gmail.com");
properties.put("mail.smtp.port", "587");
return Session.getInstance(properties, new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("clientaddress#gmail.com", "************");
}
});
}
public class SendMailTask extends AsyncTask<Message, Void, Void> {
private ProgressDialog progressDialog;
#Override
protected void onPreExecute() {
super.onPreExecute();
progressDialog = ProgressDialog.show(MainMenu.this, "Please wait", "Sending mail", true, false);
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
progressDialog.dismiss();
}
#Override
public Void doInBackground(Message... messages) {
try {
Transport.send(messages[0]);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
/**
* This method is called when the plus button is clicked.
*/
public void increment(View view) {
if (quantity < 100) {
quantity = quantity + 1;
displayQuantity(quantity);
} else {
Toast.makeText(this, "You have reached maximum numbers of coffees to be allowed!", Toast.LENGTH_SHORT).show();
}
}
/**
* This method is called when the minus button is clicked.
*/
public void decrement(View view) {
if (quantity >= 2) {
quantity = quantity - 1;
displayQuantity(quantity);
} else {
Toast.makeText(this, "You can not place order in negative number!", Toast.LENGTH_SHORT).show();
}
}
public String createOrderSummary(int quantity) {
CheckBox whippedCreamCheckbox = (CheckBox) findViewById(R.id.whippedCreamcheckbox);
boolean hasWhippedCream = whippedCreamCheckbox.isChecked();
CheckBox chocolatebox = (CheckBox) findViewById(R.id.Chocolatebox);
boolean hasChocolate = chocolatebox.isChecked();
price = 5;
if (hasWhippedCream) {
price = price + 1;
}
if (hasChocolate) {
price = price + 2;
}
int finalPrice = quantity * price;
EditText usernameTextView = (EditText) findViewById(R.id.username);
String usernameString = usernameTextView.getText().toString();
EditText usercontact = (EditText) findViewById(R.id.usercontact);
String userContactString = usercontact.getText().toString();
EditText useremail = (EditText) findViewById(R.id.useremail);
String userEmailString = useremail.getText().toString();
String OrderSummary = getString(R.string.username) + ": " + usernameString;
OrderSummary += "\n" + getString(R.string.ContactNumber) + " " + userContactString;
OrderSummary += "\n" + getString(R.string.eAddress) + " " + userEmailString;
OrderSummary += "\n" + getString(R.string.AddedWhippedCream) + " " + hasWhippedCream;
OrderSummary += "\n" + getString(R.string.AddedChocolate) + " " + hasChocolate;
OrderSummary += "\n" + getString(R.string.quantity) + ": " + quantity;
OrderSummary += "\n" + getString(R.string.totalprice) + finalPrice;
OrderSummary += "\n" + getString(R.string.thankyou);
return OrderSummary;
}
/**
* This method displays the given quantity value on the screen.
*/
public void displayQuantity(int number) {
TextView quantityTextView = (TextView) findViewById(
R.id.quantity_text_view);
quantityTextView.setText(String.format("%d", number));
}
/**
* This method displays the given text on the screen.
*/
public void displayMessage(String message) {
TextView orderSummaryTextView = (TextView) findViewById(R.id.order_summary_text_view);
orderSummaryTextView.setText(message);
}
}
Below is the MainFragment.java class file
package com.example.android.coffeeshop5profile;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class MainFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
setHasOptionsMenu(true);
setMenuVisibility(false);
return rootView;
}
}
Following is the Activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/main_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/blue_grey_700"
android:orientation="vertical"
android:weightSum="4"
tools:context=".legacy.MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="3"
android:gravity="center_vertical"
android:orientation="vertical">
<ImageView
android:id="#+id/google_icon"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_gravity="center"
android:layout_marginBottom="10dp"
android:contentDescription="#string/desc_google_icon"
android:src="#drawable/googleg_color" />
<TextView
android:id="#+id/title_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_gravity="center"
android:text="#string/title_text"
android:textColor="#android:color/white"
android:textSize="36sp" />
<TextView
android:id="#+id/status"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="#string/signed_out"
android:textColor="#android:color/white"
android:textSize="14sp" />
<TextView
android:id="#+id/detail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fadeScrollbars="true"
android:gravity="center"
android:maxLines="5"
android:padding="10dp"
android:scrollbars="vertical"
android:textColor="#android:color/white"
android:textSize="14sp" />
</LinearLayout>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="#color/blue_grey_900">
<com.google.android.gms.common.SignInButton
android:id="#+id/sign_in_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:visibility="visible"
tools:visibility="gone" />
<LinearLayout
android:id="#+id/sign_out_and_disconnect"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:orientation="horizontal"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:visibility="gone"
tools:visibility="visible">
<Button
android:id="#+id/sign_out_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/sign_out"
android:theme="#style/ThemeOverlay.MyDarkButton" />
<Button
android:id="#+id/disconnect_button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/disconnect"
android:theme="#style/ThemeOverlay.MyDarkButton" />
<Button
android:id="#+id/secondpage"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/secondpage"
android:theme="#style/ThemeOverlay.MyDarkButton" />
</LinearLayout>
</RelativeLayout>
</LinearLayout>
below is the res/menu/context_main_menu.xml file
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="#+id/context_menu"
android:title="#string/context_menu"
android:icon="#drawable/btn_add"
android:orderInCategory="100"
app:showAsAction="always" />
</menu>
...unfortunately, 30000 characters limit has been reached so i cant upload mainActivity.java file!
Kindly help!
Best regards,
sagar

try this code on
Change the following code
onMenuItemClick(MenuItem item)
to
onMenuItemClick(View clickedView, int position)
like this
`#override
public void onMenuItemClick(View clickedView, int position) {
switch (position) {
case 1:
startActivity(new Intent(MainActivity.this, UserProfile.class));
break;
case 2:
startActivity(new Intent(MainActivity.this, UserProfile.class));
break;
}
}`
i hope this help you

If onOptionsItemSelected() method is not called in fragment then just make sure you return false from the onOptionsItemSelected() method of Activity.

Code to Delete row from given customized listview using alertbox displayed when checkbox is checked in android programming

This is my code below
1) This is Class with getter and setter methods + extension of base adapter
package virtual.mall;
import java.util.List;
import virtual.mall.Salt_page_ada.saltlist_holder;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.TextView;
class Order1_cls {
String o1_it_name,o1_it_count;
int o1_it_cost,o1_it_qty;
Boolean o1isselect=false;
public Order1_cls(String o1_it_name,String o1_it_count,int o1_it_qty,int o1_it_cost){
super();
this.o1_it_name = o1_it_name;
this.o1_it_count=o1_it_count;
this.o1_it_qty=o1_it_qty;
this.o1_it_cost = o1_it_cost;
this.o1isselect=o1isselect;
}
public String getO1_it_name() {
return o1_it_name;
}
public void setO1_it_name(String o1_it_name) {
this.o1_it_name = o1_it_name;
}
public String getO1_it_count() {
return o1_it_count;
}
public void setO1_it_count(String o1_it_count) {
this.o1_it_count = o1_it_count;
}
public int getO1_it_cost() {
return o1_it_cost;
}
public void setO1_it_cost(int o1_it_cost) {
this.o1_it_cost = o1_it_cost;
}
public int getO1_it_qty() {
return o1_it_qty;
}
public void setO1_it_qty(int o1_it_qty) {
this.o1_it_qty = o1_it_qty;
}
public Boolean getO1isselect() {
return o1isselect;
}
public void setO1isselect(Boolean o1isselect) {
this.o1isselect = o1isselect;
}
}
public class Order1_page extends ArrayAdapter<Order1_cls> {
private List <Order1_cls> order1list;
private Context context;
public Order1_page(List<Order1_cls> order1list, Context context) {
super(context, R.layout.order1listref,order1list);
this.order1list=order1list;
this.context=context;
}
public static class Order1list_holder{
public TextView o1_name;
public TextView o1_count;
public TextView o1_qty;
public TextView o1_cost;
public CheckBox o1chkbx;
}
public View getView(int pos,View con_view,ViewGroup parent){
View v=con_view;
Order1list_holder hold=new Order1list_holder();
if(con_view==null){
LayoutInflater inflater=(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v=inflater.inflate(R.layout.order1listref,null);
hold.o1_name=(TextView)v.findViewById(R.id.o1_tv_name);
hold.o1_count=(TextView)v.findViewById(R.id.o1_tv_count);
hold.o1_qty=(TextView)v.findViewById(R.id.o1_tv_qty);
hold.o1_cost=(TextView)v.findViewById(R.id.o1_tv_cost);
hold.o1chkbx=(CheckBox)v.findViewById(R.id.o1_cBox);
hold.o1chkbx.setOnCheckedChangeListener((Order1class) context);
}
else{
hold=(Order1list_holder)v.getTag();
}
Order1_cls o1= order1list.get(pos);
//hold.o1_name.setText(o1.getO1_it_name());
hold.o1_count.setText(o1.getO1_it_count());
hold.o1_qty.setText(" "+o1.getO1_it_qty());
hold.o1_cost.setText(" " + o1.getO1_it_cost());
hold.o1chkbx.setChecked(o1.o1isselect);
hold.o1chkbx.setTag(o1);
return v;
}
}
2) This is code for main class extending the activity with handlers
i have written the code for deletion below but it shows an exceptio
import java.util.ArrayList;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.util.SparseBooleanArray;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.Toast;
public class Order1class extends Activity implements android.widget.CompoundButton.OnCheckedChangeListener {
ListView lv;
ArrayList<Order1_cls> order1list; //class name in ref java file
Order1_page o1adapter; // ref xml name
ArrayList<Integer> positionslist;
ImageButton addc,delbtn;
protected Object posi;
final Context context = this;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.order1pageclass);
positionslist=new ArrayList<Integer>();
lv=(ListView)findViewById(R.id.order1class_listv); //listview id in main layout
disp_ord1list();
}
private void disp_ord1list() {
// TODO Auto-generated method stub
order1list =new ArrayList<Order1_cls>();
order1list.add(new Order1_cls("Rice(basmati)","1kg packet",3,450));
order1list.add(new Order1_cls("Lentils(finegrade)","2kg packet",2,500));
order1list.add(new Order1_cls("Colgate","5kg packet",3,60));
order1list.add(new Order1_cls("cereal","1kg packet",3,60));
order1list.add(new Order1_cls("surfexcel","2kg packet",2,40));
order1list.add(new Order1_cls("vim","200gms Bar",1,25));
order1list.add(new Order1_cls("Flour","5kg packet",1,300));
o1adapter=new Order1_page(order1list,this);
lv.setAdapter(o1adapter);
}
#Override
public void onCheckedChanged(CompoundButton but_view, boolean o1isselected) {
// TODO Auto-generated method stub
int posi=lv.getPositionForView(but_view);
if(posi !=ListView.INVALID_POSITION){
Order1_cls o1=order1list.get(posi);
o1.setO1isselect(o1isselected);
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
context);
// set title
alertDialogBuilder.setTitle("remove item ??");
// set dialog message
alertDialogBuilder
.setMessage("Click yes to delete")
.setCancelable(false)
.setPositiveButton("Delete",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
for(int position : positionslist){
order1list.remove(position);
} o1adapter.notifyDataSetChanged();
}
})
.setNegativeButton("add",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
// if this button is clicked, just close
// the dialog box and do nothing
dialog.cancel();
}
});
// create alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
// show it
alertDialog.show();
}
// Toast.makeText(this,"CLICKED ON " + o1.getO1_it_name()+"of count "+ o1.getO1_it_count()+"cost is "+o1.getO1_it_cost(),Toast.LENGTH_SHORT).show();
}
}
3) order1pageclass.xml file for actual page layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:background="#58ACFA"
android:orientation="vertical" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Order-1 27/3/15"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="25dp" />
</LinearLayout>
<ListView
android:id="#+id/order1class_listv"
android:layout_width="match_parent"
android:layout_height="300dp"
android:layout_above="#+id/lay1"
android:layout_alignParentLeft="true"
android:layout_below="#+id/linearLayout1"
android:background="#FAFAFA" >
</ListView>
<LinearLayout
android:id="#+id/lay1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:background="#58ACFA"
android:orientation="horizontal" >
<ImageButton
android:id="#+id/imageButton3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/menu_btn"
android:background="#58ACFA" />
<ImageButton
android:id="#+id/imageButton4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.65"
android:src="#drawable/home_btn"
android:background="#58ACFA"
/>
<ImageButton
android:id="#+id/imageButton5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/cart_btn"
android:background="#58ACFA" />
</LinearLayout>
</RelativeLayout>
4) reference page layout (how each row should look or what it must have )
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="#+id/o1_tv_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_margin="5dp"
android:text="Rice(Basmati)"
android:textAppearance="?android:attr/textAppearanceLarge" />
<CheckBox
android:id="#+id/o1_cBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_margin="5dp"
android:layout_marginRight="36dp"
android:text="+ Cart" />
<TextView
android:id="#+id/o1_tv_count"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/o1_tv_name"
android:layout_below="#+id/o1_tv_name"
android:layout_margin="5dp"
android:text="5kg Pack"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="20dp" />
<TextView
android:id="#+id/o1_tv_qty"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/o1_tv_count"
android:layout_alignBottom="#+id/o1_tv_count"
android:layout_margin="5dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="28dp"
android:layout_toLeftOf="#+id/o1_cBox"
android:text="3"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="20dp" />
<TextView
android:id="#+id/tvqty"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/o1_tv_qty"
android:layout_alignBottom="#+id/o1_tv_qty"
android:layout_margin="5dp"
android:layout_marginLeft="10dp"
android:layout_toRightOf="#+id/o1_tv_name"
android:text="Qty :"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="20dp" />
<TextView
android:id="#+id/o1_tv_cost"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/o1_tv_qty"
android:layout_alignBottom="#+id/o1_tv_qty"
android:layout_alignRight="#+id/o1_cBox"
android:layout_margin="5dp"
android:text="450 "
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="20dp" />
</RelativeLayout>

In your onCheckedChanged() method save the positions in a list. and when button is clicked iterate through the list and delete them from the adapter list.