One output and no dismiss

One output and no dismiss - android

I have two problems, my first one is that i'm only getting one out put "score of 0" I don't know what's wrong with my code. It won't add the integers and keeps them at 0. My second one is that a new pop up comes up and then the okay button to dismiss won't work. Thanks for your help!
package xyz.ashraf.whoisdelasalle;
import android.os.Bundle;
import android.view.View;
import android.widget.CheckBox;
import android.widget.TextView;
/**
* Created by Ashraf on 3/2/2016.
*/
public class check_Button extends Pop_sallian{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.popwindow_sallian);
CheckBox concern = (CheckBox) findViewById(R.id.concern);
CheckBox faith = (CheckBox) findViewById(R.id.faith);
CheckBox respect = (CheckBox) findViewById(R.id.respect);
CheckBox education = (CheckBox) findViewById(R.id.education);
CheckBox community = (CheckBox) findViewById(R.id.community);
TextView output = (TextView) findViewById(R.id.output);
int con = 0;
int fai = 0;
int res = 0;
int edu = 0;
int com = 0;
if (concern.isChecked()) {
con = con+1;
}
if (faith.isChecked()) {
fai = fai+1;
}
if (respect.isChecked()) {
res = res+1;
}
if (education.isChecked()) {
edu = edu+1;
}
if (community.isChecked()) {
com = com +1;
}
int score = con+fai+res+edu+com;
if(score == 0){
output.setText("score of 0");
} else if(score == 1){
output.setText("score of 1");
} else if(score == 2){
output.setText("score of 2");
} else if(score == 3){
output.setText("score of 3");
} else if(score == 4){
output.setText("score of 4");
} else if(score == 5){
output.setText("score of 5");
} else{
output.setText("Unknown");
}
}
}
code where the out put doesn't work^^
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/ScrollView01"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<RelativeLayout
android:layout_width="match_parent" android:layout_height="match_parent">
android:elevation="8dp"
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Are you a Sallian?"
android:id="#+id/textView7"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:textSize="30sp"
android:textColor="#000000" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Do you meet the following prerequisites, if you do you may be a Sallian"
android:id="#+id/textView8"
android:layout_below="#+id/textView7"
android:layout_centerHorizontal="true"
android:textSize="20sp"
android:textColor="#000000" />
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Are you concerened for the poor and Social Justice?"
android:id="#+id/concern"
android:textSize="18sp"
android:layout_below="#+id/textView8"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="10dp" />
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Do you have faith in the presence of God?"
android:id="#+id/faith"
android:textSize="15sp"
android:layout_below="#+id/concern"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="3dp" />
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Do you have Respect for all people?"
android:id="#+id/respect"
android:layout_below="#+id/faith"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="3dp"
android:textSize="15sp" />
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Do you value education?"
android:id="#+id/education"
android:textSize="15sp"
android:layout_below="#+id/respect"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="3dp" />
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Are you inclusive in your community?"
android:id="#+id/community"
android:layout_below="#+id/education"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:textSize="15sp"
android:checked="false" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Ok"
android:id="#+id/okButton_sallian"
android:layout_below="#+id/community"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginRight="20dp"
android:layout_marginTop="40dp"
android:background="#FAFAFA"
android:textColor="#00E676"
android:elevation="2dp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Check"
android:id="#+id/check"
android:textColor="#00E676"
android:elevation="2dp"
android:background="#FAFAFA"
android:layout_alignTop="#+id/okButton_sallian"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="20dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="#+id/output"
android:layout_below="#+id/community"
android:textColor="#1eff00"
android:layout_alignLeft="#+id/check"
android:layout_alignStart="#+id/check"
android:layout_alignRight="#+id/okButton_sallian"
android:layout_alignEnd="#+id/okButton_sallian"
android:layout_above="#+id/check"
android:textSize="20sp" />
</RelativeLayout>
</ScrollView>
xml pop up window where the okay button won't work when the check button is checked^^
package xyz.ashraf.whoisdelasalle;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.View;
import android.widget.Button;
/**
* Created by Ashraf on 1/27/2016.
*/
public class Pop_sallian extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.popwindow_sallian);
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int width = dm.widthPixels;
int height = dm.heightPixels;
getWindow().setLayout((int)(width*.8),(int)(height*.6));
Button checkButton = (Button) findViewById(R.id.check);
checkButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(Pop_sallian.this, check_Button.class));
}
});
Button okButton = (Button) findViewById(R.id.okButton_sallian);
okButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
finish();
}
});
}
}
java code that creates the pop up^^

Related

Create ImageButton after pushing on ImageButton

I have two rows of ImageButtons. Аfter clicking on any of the first row, I want the first row to be removed and the second row to appear, with the ImageButton centered. It should look something like this: "https://lifehacker.ru/special/travel-checklist/".
The layout of the first row:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/mainlayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#bbbbbb"
android:orientation="horizontal">
<ImageButton
android:id="#+id/winter"
android:layout_width="192dp"
android:layout_height="183dp"
android:layout_alignParentRight="true"
android:layout_gravity="center"
android:layout_weight="2"
android:gravity="left|center_vertical"
android:onClick="Winter"
android:paddingTop="32sp"
android:scaleType="fitCenter"
android:src="#drawable/snejinka"
android:text="Зима"
android:textColor="#FFFFFF" />
<ImageButton
android:id="#+id/Middle"
android:layout_width="192dp"
android:layout_height="183dp"
android:layout_alignParentRight="true"
android:layout_gravity="center"
android:layout_weight="2"
android:gravity="left|center_vertical"
android:onClick="Middle"
android:paddingTop="32sp"
android:scaleType="fitCenter"
android:src="#drawable/listok"
android:text="Весна/Осень"
android:textColor="#FFFFFF" />
<ImageButton
android:id="#+id/Summer"
android:layout_width="192dp"
android:layout_height="183dp"
android:layout_alignParentRight="true"
android:layout_gravity="center"
android:layout_weight="2"
android:gravity="left|center_vertical"
android:onClick="Summer"
android:paddingTop="32sp"
android:scaleType="fitCenter"
android:src="#drawable/unnamed"
android:text="Лето"
android:textColor="#FFFFFF" />
</LinearLayout>
The layout of the second row:
<ImageButton
android:id="#+id/three"
android:layout_width="192dp"
android:layout_height="183dp"
android:layout_alignParentRight="true"
android:layout_weight="2"
android:gravity="left|center_vertical"
android:onClick="three"
android:paddingTop="32sp"
android:scaleType="fitCenter"
android:src="#drawable/three"
android:text="three"
android:textColor="#FFFFFF" />
<ImageButton
android:id="#+id/seven"
android:layout_width="192dp"
android:layout_height="183dp"
android:layout_alignParentRight="true"
android:layout_weight="2"
android:gravity="left|center_vertical"
android:onClick="seven"
android:paddingTop="32sp"
android:scaleType="fitCenter"
android:src="#drawable/seven"
android:text="three"
android:textColor="#FFFFFF" />
<ImageButton
android:id="#+id/fourteen"
android:layout_width="192dp"
android:layout_height="183dp"
android:layout_alignParentRight="true"
android:layout_weight="2"
android:gravity="left|center_vertical"
android:onClick="fourteen"
android:paddingTop="32sp"
android:scaleType="fitCenter"
android:src="#drawable/fourteen"
android:text="three"
android:textColor="#FFFFFF" />
And here is my activity for both rows. I dont know, how to make the second row appear after the first clicked (the second row is under comments)
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;
import static com.example.samsunghomework.R.id.*;
public class MainActivity extends AppCompatActivity {
ImageButton winter;
ImageButton middle;
ImageButton summer;
LinearLayout mainlayout;
/*
ImageButton three;
ImageButton seven;
ImageButton fourteen;
*/
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
winter = (ImageButton) findViewById(R.id.winter);
middle = (ImageButton) findViewById(Middle);
summer = (ImageButton) findViewById(Summer);
mainlayout = (LinearLayout) findViewById(R.id.mainlayout);
/*
three = (ImageButton) findViewById(R.id.three);
seven = (ImageButton) findViewById(R.id.seven);
fourteen = (ImageButton) findViewById(R.id.fourteen);
*/
}
int galka = 0;
int curr = 0;
public void Winter(View view) {
// mainlayout.removeAllViews();
if (galka == 0) winter.setImageResource(R.drawable.galka);
else if (curr == 2) {
middle.setImageResource(R.drawable.listok);
winter.setImageResource(R.drawable.galka);
}
if (curr == 3) {
summer.setImageResource(R.drawable.unnamed);
winter.setImageResource(R.drawable.galka);
}
galka = 1;
curr = 1;
// mainlayout.addView(new ImageButton(this));
ImageButton imageButton = new ImageButton(MainActivity.this);
imageButton.setImageResource(R.drawable.galka);
LinearLayout.LayoutParams imageViewLayoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
imageButton.setLayoutParams(imageViewLayoutParams);
mainlayout.addView(imageButton);
}
public void Middle(View view) {
if (galka == 0) middle.setImageResource(R.drawable.galka);
else if (curr == 1) {
winter.setImageResource(R.drawable.snejinka);
middle.setImageResource(R.drawable.galka);
}
if (curr == 3) {
summer.setImageResource(R.drawable.unnamed);
middle.setImageResource(R.drawable.galka);
}
galka = 1;
curr = 2;
}
public void Summer(View view) {
if (galka == 0) summer.setImageResource(R.drawable.galka);
else if (curr == 1) {
winter.setImageResource(R.drawable.snejinka);
summer.setImageResource(R.drawable.galka);
}
if (curr == 2) {
middle.setImageResource(R.drawable.listok);
summer.setImageResource(R.drawable.galka);
}
galka = 1;
curr = 3;
}
int galka2 = 0;
int curr2 = 0;
/*
public void three(View view) {
if (galka2 == 0) three.setImageResource(R.drawable.galka);
else if (curr2 == 2) {
seven.setImageResource(R.drawable.seven);
three.setImageResource(R.drawable.galka);
}
if (curr2 == 3) {
fourteen.setImageResource(R.drawable.fourteen);
three.setImageResource(R.drawable.galka);
}
galka2 = 1;
curr2 = 1;
}
public void seven(View view) {
if (galka2 == 0) seven.setImageResource(R.drawable.galka);
else if (curr2 == 1) {
three.setImageResource(R.drawable.three);
seven.setImageResource(R.drawable.galka);
}
if (curr2 == 3) {
fourteen.setImageResource(R.drawable.fourteen);
seven.setImageResource(R.drawable.galka);
}
galka2 = 1;
curr2 = 2;
}
public void fourteen(View view) {
if (galka2 == 0) fourteen.setImageResource(R.drawable.galka);
else if (curr2 == 1) {
three.setImageResource(R.drawable.three);
fourteen.setImageResource(R.drawable.galka);
}
if (curr2 == 2) {
seven.setImageResource(R.drawable.seven);
fourteen.setImageResource(R.drawable.galka);
}
galka2 = 1;
curr2 = 3;
}
*/
}

You can play visibility in your Linear Layout which has multiple ImageButton after you click on several ImageButton items in line one.
You can try this code.
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:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center"
tools:context=".MainActivity">
<LinearLayout
android:id="#+id/layoutRowOne"
android:orientation="horizontal"
android:background="#android:color/holo_blue_light"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:text="YES"
android:id="#+id/btnLayoutOneYes"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<Button
android:text="NO"
android:id="#+id/btnLayoutOneNo"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
<LinearLayout
android:id="#+id/layoutRowTwo"
android:orientation="horizontal"
android:visibility="gone"
android:background="#android:color/holo_orange_light"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:text="HOT"
android:id="#+id/btnLayoutTwoHot"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<Button
android:text="COLD"
android:id="#+id/btnLayoutTwoCold"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
</LinearLayout>
MainActivity
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.View
import kotlinx.android.synthetic.main.activity_main.*
class MainActivity : AppCompatActivity() {
private var statusRowOne = false
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
btnLayoutOneYes.setOnClickListener {
statusRowOne = true
if (statusRowOne) {
layoutRowOne.visibility = View.GONE
layoutRowTwo.visibility = View.VISIBLE
}
}
btnLayoutOneNo.setOnClickListener {
statusRowOne = true
if (statusRowOne) {
layoutRowOne.visibility = View.GONE
layoutRowTwo.visibility = View.VISIBLE
}
}
}
}
I hope this code can help your case.

You can use Linear layout and frame layout to separate each and show the image buttons based on click event.
Layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/mainlayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#bbbbbb"
android:orientation="horizontal">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2"
android:orientation="horizontal">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2">
<ImageButton
android:id="#+id/winter"
android:layout_width="192dp"
android:layout_height="183dp"
android:layout_alignParentRight="true"
android:layout_gravity="center"
android:layout_weight="2"
android:gravity="left|center_vertical"
android:onClick="Winter"
android:paddingTop="32sp"
android:scaleType="fitCenter"
android:src="#drawable/snejinka"
android:text="Зима"
android:textColor="#FFFFFF"
android:visibility="visible" />
<ImageButton
android:id="#+id/seven"
android:layout_width="192dp"
android:layout_height="183dp"
android:layout_alignParentRight="true"
android:layout_gravity="center"
android:layout_weight="2"
android:gravity="left|center_vertical"
android:onClick="seven"
android:paddingTop="32sp"
android:scaleType="fitCenter"
android:src="#drawable/seven"
android:text="three"
android:textColor="#FFFFFF"
android:visibility="invisible" />
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2">
<ImageButton
android:id="#+id/Middle"
android:layout_width="192dp"
android:layout_height="183dp"
android:layout_alignParentRight="true"
android:layout_gravity="center"
android:layout_weight="2"
android:gravity="left|center_vertical"
android:onClick="Middle"
android:paddingTop="32sp"
android:scaleType="fitCenter"
android:src="#drawable/ic_launcher_background"
android:text="Весна/Осень"
android:textColor="#FFFFFF" />
<ImageButton
android:id="#+id/three"
android:layout_width="192dp"
android:layout_height="183dp"
android:layout_alignParentRight="true"
android:layout_gravity="center"
android:layout_weight="2"
android:gravity="left|center_vertical"
android:onClick="three"
android:paddingTop="32sp"
android:scaleType="fitCenter"
android:src="#drawable/three "
android:text="three"
android:textColor="#FFFFFF"
android:visibility="invisible" />
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2">
<ImageButton
android:id="#+id/Summer"
android:layout_width="192dp"
android:layout_height="183dp"
android:layout_alignParentRight="true"
android:layout_gravity="center"
android:layout_weight="2"
android:gravity="left|center_vertical"
android:onClick="Summer"
android:paddingTop="32sp"
android:scaleType="fitCenter"
android:src="#mipmap/unnamed"
android:text="Лето"
android:textColor="#FFFFFF" />
<ImageButton
android:id="#+id/fourteen"
android:layout_width="192dp"
android:layout_height="183dp"
android:layout_alignParentRight="true"
android:layout_gravity="center"
android:layout_weight="2"
android:gravity="left|center_vertical"
android:onClick="fourteen"
android:paddingTop="32sp"
android:scaleType="fitCenter"
android:src="#drawable/fourteen"
android:text="three"
android:textColor="#FFFFFF"
android:visibility="invisible" />
</FrameLayout>
</LinearLayout>
</LinearLayout>
MainActivity.java
package com.example.myapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
public class MainActivity extends AppCompatActivity {
LinearLayout mainlayout;
ImageButton winter;
ImageButton middle;
ImageButton summer;
ImageButton three;
ImageButton seven;
ImageButton fourteen;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mainlayout = findViewById(R.id.mainlayout);
winter = findViewById(R.id.winter);
middle = findViewById(R.id.Middle);
summer = findViewById(R.id.Summer);
three = findViewById(R.id.three);
seven = findViewById(R.id.seven);
fourteen = findViewById(R.id.fourteen);
winter.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
action();
}
});
middle.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
action();
}
});
summer.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
action();
}
});
}
public void action() {
winter.setVisibility(View.INVISIBLE);
middle.setVisibility(View.INVISIBLE);
summer.setVisibility(View.INVISIBLE);
three.setVisibility(View.VISIBLE);
fourteen.setVisibility(View.VISIBLE);
seven.setVisibility(View.VISIBLE);
}
}

Check is any RadioButton is checked in Android

I would like to check is any RadioButton is checked and which is checked.
I have
package promedica.test_osobowosci;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.Toast;
public class Question1 extends AppCompatActivity {
private Button nextButton;
private Button stopButton;
private RadioButton answer1;
private RadioButton answer2;
private RadioButton answer3;
private RadioButton answer4;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_question1);
setTitle("Pytanie 1 z 10");
answer1 = findViewById(R.id.radioButtonQ1_1);
answer1 = findViewById(R.id.radioButtonQ1_2);
answer1 = findViewById(R.id.radioButtonQ1_3);
answer1 = findViewById(R.id.radioButtonQ1_4);
nextButton = findViewById(R.id.nextTo2Button);
nextButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
isAnyRadioButtonChecke();
}
});
stopButton = findViewById(R.id.stopButton1);
stopButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
openMainActivity();
}
});
}
public void openQuestion2Activity(){
Intent intent = new Intent(this, Question2.class);
startActivity(intent);
}
public void openMainActivity(){
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
}
public void noAnswerCheckedAlert() {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
alertDialogBuilder.setMessage("Nie zaznaczono odpowiedzi!");
alertDialogBuilder.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface arg0, int arg1) {
Toast.makeText(Question1.this, "Zaznacz odpowiedź", Toast.LENGTH_LONG).show();
}
});
AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
}
public void isAnyRadioButtonChecked(){
if(answer1.isChecked() || answer2.isChecked() || answer3.isChecked() || answer4.isChecked())
openQuestion2Activity();
else
noAnswerCheckedAlert();
}
}
and I get error:
java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.widget.RadioButton.isChecked()' on a null object reference
at promedica.test_osobowosci.Question1.isAnyRadioButtonChecked(Question1.java:76)
at promedica.test_osobowosci.Question1$1.onClick(Question1.java:38)
at android.view.View.performClick(View.java:6294)
at android.view.View$PerformClick.run(View.java:24770)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
When I click nextButton with checking, without before clicked any RadioButton.
But I click any RadioButton and next click nextButton, the application show alert all the time. I tried declare RadioButtons in OnClickListener button method but is not solve my problems.
What is the problem?
Edit:
activity_question1.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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=".Question1">
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="46dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="false"
android:layout_marginTop="40dp"
android:layout_marginLeft="85dp"
android:text="Question1"
android:textAppearance="#android:style/TextAppearance.DeviceDefault.Widget.ActionBar.Title"
app:layout_constraintEnd_toEndOf="parent"
tools:layout_editor_absoluteY="25dp" />
<ImageView
android:id="#+id/imageView4"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="19dp"
android:layout_marginTop="0dp"
android:scaleType="fitXY"
android:cropToPadding="false"
app:srcCompat="#mipmap/obrot" />
<ImageView
android:id="#+id/imageView5"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentEnd="true"
android:layout_alignParentTop="true"
android:layout_marginEnd="19dp"
android:layout_marginTop="0dp"
android:scaleType="fitXY"
android:cropToPadding="false"
app:srcCompat="#mipmap/obrot" />
<RadioGroup
android:layout_width="match_parent"
android:layout_height="159dp"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginTop="109dp"
android:layout_marginLeft="85dp">
<RadioButton
android:id="#+id/radioButtonQ1_1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Answer1"
android:inputType="textMultiLine"
android:layout_marginRight="50dp"
android:theme="#style/MyRadioButton" />
<RadioButton
android:id="#+id/radioButtonQ1_2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Answer2"
android:inputType="textMultiLine"
android:layout_marginRight="50dp"
android:theme="#style/MyRadioButton" />
<RadioButton
android:id="#+id/radioButtonQ1_3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Answer3"
android:inputType="textMultiLine"
android:layout_marginRight="50dp"
android:theme="#style/MyRadioButton" />
<RadioButton
android:id="#+id/radioButtonQ1_4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:checked="false"
android:inputType="textMultiLine"
android:text="Answer4"
android:layout_marginRight="50dp"
android:theme="#style/MyRadioButton" />
</RadioGroup>
<Button
android:id="#+id/nextTo2Button"
android:layout_width="200dp"
android:layout_height="75dp"
android:layout_marginTop="305dp"
android:layout_centerHorizontal="true"
android:layout_marginBottom="161dp"
android:background="#drawable/custom_button"
android:text="Next"
android:textAllCaps="false"
android:textColor="#ffffff" />
<Button
android:id="#+id/stopButton1"
android:layout_width="200dp"
android:layout_height="75dp"
android:layout_marginTop="395dp"
android:layout_centerHorizontal="true"
android:background="#drawable/custom_button_blue"
android:text="Stop"
android:textAllCaps="false"
android:textColor="#ffffff" />
<ImageView
android:id="#+id/imageView3"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_alignParentBottom="true"
android:layout_marginBottom="60dp"
android:layout_alignParentStart="true"
app:srcCompat="#mipmap/oie_transparent" />
</RelativeLayout>

Instead of checking for an individual radiobutton do the following:
if (radioGroup.getCheckedRadioButtonId() == -1)
{
noAnswerCheckedAlert();
}
else
{
openQuestion2Activity();
}

<RadioGroup
android:id="#+id/radio"
android:layout_width="match_parent"
android:layout_height="159dp"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginTop="109dp"
android:layout_marginLeft="85dp">
<RadioButton
android:id="#+id/radioButtonQ1_1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Answer1"
android:inputType="textMultiLine"
android:layout_marginRight="50dp"
android:theme="#style/MyRadioButton" />
<RadioButton
android:id="#+id/radioButtonQ1_2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Answer2"
android:inputType="textMultiLine"
android:layout_marginRight="50dp"
android:theme="#style/MyRadioButton" />
<RadioButton
android:id="#+id/radioButtonQ1_3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Answer3"
android:inputType="textMultiLine"
android:layout_marginRight="50dp"
android:theme="#style/MyRadioButton" />
<RadioButton
android:id="#+id/radioButtonQ1_4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:checked="false"
android:inputType="textMultiLine"
android:text="Answer4"
android:layout_marginRight="50dp"
android:theme="#style/MyRadioButton" />
</RadioGroup>
JAVA CODE:
RadioGroup radioGroup = (RadioGroup) findViewById(R.id.radio);
nextButton = findViewById(R.id.nextTo2Button);
nextButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (radioGroup.getCheckedRadioButtonId() == -1) {
// no radio buttons are checked
noAnswerCheckedAlert();
} else {
// one of the radio buttons is checked
openQuestion2Activity();
}
}
});

Use the RadioGroup to check if no RadioButton is checked:
RadioGroup radioGroup;
....
if(radioGroup.getCheckedRadioButtonId() != answer1 || ........)
{
AlertDialog...
}
else
{
openQuestion2Activity();
}

you can use RadioGroup in the xml
<?xml version="1.0" encoding="utf-8"?>
<RadioGroup xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/radiobuttongroup"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RadioButton android:id="#+id/radio_q1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/option1"
android:onClick="onRadioButtonClicked"/>
<RadioButton android:id="#+id/radio_q2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/options2"
android:onClick="onRadioButtonClicked"/>
</RadioGroup>
And Activity file
RadioGroup radioGroup;
radioGroup = (RadioGroup) findViewById(R.id.radiobuttongroup);
final String[] checkedOption = new String[1];
radioGroup.setOnCheckedChangeListener(new
RadioGroup.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
switch (checkedId){
case R.id.radio_q1:
checkedOption[0] = 1;
break;
case R.id.radio_q2:
checkedOption[0] = 2;
break;
.
.
.
}
}
});

An alert dialog with an image will appear once LinearLayout is clicked

Symptoms.java
package com.example.des;
import java.util.ArrayList;
import com.example.des.R;
import com.example.des.Symptoms;
import com.example.des.Learn_Dengue;
import android.os.Bundle;
import android.os.Handler;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Intent;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;
public class Symptoms extends Activity implements OnClickListener{
//set variables
CheckBox q1; CheckBox q2; CheckBox q3; CheckBox q4; CheckBox q5; CheckBox q6;
CheckBox q7; CheckBox q8; CheckBox q9 ;CheckBox q10; CheckBox q11; CheckBox q12;
LinearLayout sas1; LinearLayout sas2; LinearLayout sas3; LinearLayout sas4; LinearLayout sas5; LinearLayout sas6;
LinearLayout sas7; LinearLayout sas8; LinearLayout sas9; LinearLayout sas10; LinearLayout sas11; LinearLayout sas12;
Button btndone;
Button btnlearn;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.question);
q1 = (CheckBox)findViewById(R.id.q1a); //Question number 1--main symptom
q2 = (CheckBox)findViewById(R.id.q2a);
q3 = (CheckBox)findViewById(R.id.q3a);
q4 = (CheckBox)findViewById(R.id.q4a);
q5 = (CheckBox)findViewById(R.id.q5a);
q6 = (CheckBox)findViewById(R.id.q6a);
q7 = (CheckBox)findViewById(R.id.q7a);
q8 = (CheckBox)findViewById(R.id.q8a);
q9 = (CheckBox)findViewById(R.id.q9a);
q10 = (CheckBox)findViewById(R.id.q10a);
q11 = (CheckBox)findViewById(R.id.q11a);
q12 = (CheckBox)findViewById(R.id.q12a);
sas1 = (LinearLayout)findViewById(R.id.sas1view);
sas2 = (LinearLayout)findViewById(R.id.sas2view);
sas3 = (LinearLayout)findViewById(R.id.sas3view);
sas4 = (LinearLayout)findViewById(R.id.sas4view);
sas5 = (LinearLayout)findViewById(R.id.sas5view);
sas6 = (LinearLayout)findViewById(R.id.sas6view);
sas7 = (LinearLayout)findViewById(R.id.sas7view);
sas8 = (LinearLayout)findViewById(R.id.sas8view);
sas9 = (LinearLayout)findViewById(R.id.sas9view);
sas10 = (LinearLayout)findViewById(R.id.sas10view);
sas11 = (LinearLayout)findViewById(R.id.sas11view);
sas12 = (LinearLayout)findViewById(R.id.sas12view);
btndone = (Button) findViewById(R.id.done);
btndone.setOnClickListener(this);
btnlearn = (Button) findViewById(R.id.learn);
btnlearn.setOnClickListener(this);
}
#Override
public void onClick(View v) {
// When button "Result" is pressed
switch (v.getId()) {
case R.id.done:
ArrayList<CheckBox> cbList = new ArrayList<CheckBox>();
// Array CheckBox 2 - 12 inside an Array (sub symptoms)
cbList.add((CheckBox)findViewById(R.id.q2a));
cbList.add((CheckBox)findViewById(R.id.q3a));
cbList.add((CheckBox)findViewById(R.id.q4a));
cbList.add((CheckBox)findViewById(R.id.q5a));
cbList.add((CheckBox)findViewById(R.id.q6a));
cbList.add((CheckBox)findViewById(R.id.q7a));
cbList.add((CheckBox)findViewById(R.id.q8a));
cbList.add((CheckBox)findViewById(R.id.q9a));
cbList.add((CheckBox)findViewById(R.id.q10a));
cbList.add((CheckBox)findViewById(R.id.q11a));
cbList.add((CheckBox)findViewById(R.id.q12a));
// Starts Looping if CheckBox number 1 is selected and the others (result SUSPICIOUS)
if (q1.isChecked()) {
int count = 0;
for (CheckBox cb : cbList) {
if (cb.isChecked()) {
count++;
}
}
if (count == 2 || count == 1 || count == 0) {
new AlertDialog.Builder(this).setMessage(R.string.suspicious).show();
}
}
// START Looping if CheckBox number 1 is selected but 11 and 12 are not (result MOST LIKELY)
if (q1.isChecked()) {
int count = 0;
for (CheckBox cb : cbList) {
if (cb.isChecked()) {
count++;
}
}
if (count >= 3 && count < 11) {
new AlertDialog.Builder(this).setMessage(R.string.most_likely).show();
}
}
// START Looping if all CheckBox are selected(result POSITIVE)
if (q1.isChecked() && q2.isChecked() && q3.isChecked() && q4.isChecked() &&
q5.isChecked() && q6.isChecked() && q7.isChecked() && q8.isChecked() &&
q9.isChecked() && q10.isChecked() && q11.isChecked() && q12.isChecked()) {
int count = 0;
for (CheckBox cb : cbList) {
if (cb.isChecked()) {
count++;
}
}
if (count == 11) {
new AlertDialog.Builder(this).setMessage(R.string.positive).show();
}
}
// Starts Looping if CheckBox number 1 is not selected and the others are checked
if (!q1.isChecked()) {
int count = 0;
for (CheckBox cb : cbList) {
if (cb.isChecked()) {
count++;
}
}
if (count <= 1 || count > 1) {
//this Toast will show when only 1 or more check box will be checked(excluding check box #1)
/*Toast toast= Toast.makeText(getApplicationContext(), getString(R.string.negative), Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
*/
new AlertDialog.Builder(this).setMessage(R.string.negative).show();
}
}
break;
// When button "Learn More" is pressed
case R.id.learn:
Intent q = new Intent(this, Learn_Dengue.class);
startActivity(q);
break;
}
Here start my question.
sas1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Alert Dialog with image
}
});
sas2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Alert Dialog with image
}
});
sas3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Alert Dialog with image
}
});
sas4.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Alert Dialog with image
}
});
sas5.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Alert Dialog with image
}
});
sas6.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Alert Dialog with image
}
});
sas7.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Alert Dialog with image
}
});
sas8.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Alert Dialog with image
}
});
sas9.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Alert Dialog with image
}
});
sas10.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Alert Dialog with image
}
});
sas11.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Alert Dialog with image
}
});
sas12.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Alert Dialog with image
}
});
}
}
questions.xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scrollView1"
style="#style/styleName"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/warning"
android:textAppearance="?android:attr/textAppearanceMedium" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<CheckBox
android:id="#+id/q1a"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_marginTop="15dp"
android:id="#+id/sas1view"
android:layout_width="match_parent"
android:layout_height="30dp" >
<TextView
android:id="#+id/sas1"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:text="#string/sas1"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000"
android:textSize="15sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<CheckBox
android:id="#+id/q2a"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_marginTop="15dp"
android:id="#+id/sas2view"
android:layout_width="match_parent"
android:layout_height="30dp" >
<TextView
android:id="#+id/sas2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sas2"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000"
android:textSize="15sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<CheckBox
android:id="#+id/q3a"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_marginTop="15dp"
android:id="#+id/sas3view"
android:layout_width="match_parent"
android:layout_height="30dp" >
<TextView
android:id="#+id/sas3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sas3"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000"
android:textSize="15sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<CheckBox
android:id="#+id/q4a"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_marginTop="15dp"
android:id="#+id/sas4view"
android:layout_width="match_parent"
android:layout_height="30dp" >
<TextView
android:id="#+id/sas4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sas4"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000"
android:textSize="15sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<CheckBox
android:id="#+id/q5a"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_marginTop="15dp"
android:id="#+id/sas5view"
android:layout_width="match_parent"
android:layout_height="30dp" >
<TextView
android:id="#+id/sas5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sas5"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000"
android:textSize="15sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<CheckBox
android:id="#+id/q6a"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_marginTop="15dp"
android:id="#+id/sas6view"
android:layout_width="match_parent"
android:layout_height="30dp" >
<TextView
android:id="#+id/sas6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sas6"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000"
android:textSize="15sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<CheckBox
android:id="#+id/q7a"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_marginTop="15dp"
android:id="#+id/sas7view"
android:layout_width="match_parent"
android:layout_height="30dp" >
<TextView
android:id="#+id/sas7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sas7"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000"
android:textSize="15sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<CheckBox
android:id="#+id/q8a"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_marginTop="15dp"
android:id="#+id/sas8view"
android:layout_width="match_parent"
android:layout_height="30dp" >
<TextView
android:id="#+id/sas8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sas8"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000"
android:textSize="15sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<CheckBox
android:id="#+id/q9a"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_marginTop="15dp"
android:id="#+id/sas9view"
android:layout_width="match_parent"
android:layout_height="30dp" >
<TextView
android:id="#+id/sas9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sas9"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000"
android:textSize="15sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<CheckBox
android:id="#+id/q10a"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_marginTop="15dp"
android:id="#+id/sas10view"
android:layout_width="match_parent"
android:layout_height="30dp" >
<TextView
android:id="#+id/sas10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sas10"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000"
android:textSize="15sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<CheckBox
android:id="#+id/q11a"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_marginTop="15dp"
android:id="#+id/sas11view"
android:layout_width="match_parent"
android:layout_height="30dp" >
<TextView
android:id="#+id/sas11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sas11"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000"
android:textSize="15sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<CheckBox
android:id="#+id/q12a"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_marginTop="15dp"
android:id="#+id/sas12view"
android:layout_width="match_parent"
android:layout_height="30dp" >
<TextView
android:id="#+id/sas12"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sas12"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000"
android:textSize="15sp"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="20dp" >
<Button
android:id="#+id/done"
android:layout_width="120dp"
android:layout_height="40dp"
android:layout_marginLeft="35dp"
android:layout_marginTop="20dp"
android:background="#drawable/btn_orange"
android:text="#string/done"
android:textColor="#ffffff"
android:textSize="15sp" />
<Button
android:id="#+id/learn"
android:layout_width="120dp"
android:layout_height="40dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="20dp"
android:background="#drawable/btn_black"
android:text="#string/learn"
android:textColor="#ffffff"
android:textSize="15sp" />
</LinearLayout>
</LinearLayout>
</ScrollView>
here is my full code as you requested #mobie.. the Symptoms.java and the question.xml..dont matter the other code..just on the alert dialog that i asked.

Create Layout Like Below for Dialog Box : dialog.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<ImageView
android:id="#+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp" />
<TextView
android:id="#+id/text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="#FFF"
android:layout_toRightOf="#+id/image"/>
<Button
android:id="#+id/dialogButtonOK"
android:layout_width="100px"
android:layout_height="wrap_content"
android:text=" Ok "
android:layout_marginTop="5dp"
android:layout_marginRight="5dp"
android:layout_below="#+id/image"
/>
</RelativeLayout>
Then, Where you want to place the Alert, Do like below
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.dialog);
dialog.setTitle("Your Title");
TextView text = (TextView) dialog.findViewById(R.id.text);
text.setText("Text");
ImageView image = (ImageView) dialog.findViewById(R.id.image);
image.setImageResource(R.drawable.ic_launcher);
Button dialogButton = (Button) dialog.findViewById(R.id.dialogButtonOK);
dialogButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
dialog.dismiss();
}
});
dialog.show();

Android Temperature Vogella tutorial error

I'm using the vogella tutorial, and I'm almost followed the instructions exactly, but it is sort of giving me an error on text and radiobutton saying it cannot be resolved or it is not in field. I'm really new to Android. Would you please help me out with the code.
package convert.activity;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.Toast;
public class MainActivity extends Activity {
private EditText text;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
text = (EditText) findViewById(R.id.editText1);
}
// This method is called at button click because we assigned the name to the
// "On Click property" of the button
public void myClickHandler(View view) {
switch (view.getId()) {
case R.id.button1:
RadioButton celsiusButton = (RadioButton) findViewById(R.id.radio0);
RadioButton fahrenheitButton = (RadioButton) findViewById(R.id.radio1);
if (text.getText().length() == 0) {
Toast.makeText(this, "Please enter a valid number",
Toast.LENGTH_LONG).show();
return;
}
float inputValue = Float.parseFloat(text.getText().toString());
if (celsiusButton.isChecked()) {
text.setText(String
.valueOf(convertFahrenheitToCelsius(inputValue)));
celsiusButton.setChecked(false);
fahrenheitButton.setChecked(true);
} else {
text.setText(String
.valueOf(convertCelsiusToFahrenheit(inputValue)));
fahrenheitButton.setChecked(false);
celsiusButton.setChecked(true);
}
break;
}
}
// Converts to celsius
private float convertFahrenheitToCelsius(float fahrenheit) {
return ((fahrenheit - 32) * 5 / 9);
}
// Converts to fahrenheit
private float convertCelsiusToFahrenheit(float celsius) {
return ((celsius * 9) / 5) + 32;
}
}
Here is my code to activity_main.xml
<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"
android:background="#color/myColor" >
<EditText
android:id="#+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:ems="10"
android:inputType="numberSigned|numberDecimal"
>
<requestFocus />
</EditText>
<RadioGroup
android:id="#+id/radioGroup1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/editText1" >
<RadioButton
android:id="#+id/radio0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="#string/celsius" />
<RadioButton
android:id="#+id/radio1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/fahrenheit" />
</RadioGroup>
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/calc"
android:onClick="myClickHandler">
</Button>
</RelativeLayout>
The error is on editText1, radio0, radio1 and button1... For all them the error is the same,i.e it cannot be resolved or is not in a field.

Here it is...
I used your xml file and it is resolved perfectly
EditText text;
RadioButton r1,r2;
Button b1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
text = (EditText)findViewById(R.id.editText1);
r1 =(RadioButton)findViewById(R.id.radio0);
r1 =(RadioButton)findViewById(R.id.radio1);
}
and do like this
b1 = (Button)findViewById(R.id.button1);
b1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// your Switch code here
}
});
}

I checked your code it's perfectly working change the activity_main like this
<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"
>
<EditText
android:id="#+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:ems="10"
android:inputType="numberSigned|numberDecimal"
>
<requestFocus />
</EditText>
<RadioGroup
android:id="#+id/radioGroup1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/editText1" >
<RadioButton
android:id="#+id/radio0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="celsius" />
<RadioButton
android:id="#+id/radio1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="fahrenheit" />
</RadioGroup>
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_toRightOf="#+id/editText1"
android:onClick="myClickHandler"
android:text="calc" />
</RelativeLayout>

How to implement custom Tab Host in Android

How to make this kind of tab in Android [http://i.stack.imgur.com/rIbUX.png]
just mention that see the overlap area, when you click on of the tab, the overlap changed.
here is one chinese version example in which I think that's what I want to have, but they don't provide the complete code, and I have no idea how to go on this project.
http://www.oschina.net/question/54100_29061
I am currently using Android 3.2 and ICS 4+ to implement this project, so welcome if that's possible to implement competible with Framgment.
I finally I made the solution by myself. I just leave the native tab host implementation, make up my own.
here is the screen shot:
[http://i.stack.imgur.com/1mXLZ.png]
here is the Activity code:
import android.app.Activity;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.TextView;
public class PelesysTabHostActivity extends Activity {
private ImageView ib1, ib2, ib3, last;
private Drawable pressed, released;
private TextView tv,tv1,tv2,tv3;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ib1 = (ImageView) this.findViewById(R.id.imageView1);
ib2 = (ImageView) this.findViewById(R.id.imageView2);
ib3 = (ImageView) this.findViewById(R.id.imageView3);
tv = (TextView) this.findViewById(R.id.textView1);
tv1= (TextView) this.findViewById(R.id.textView11);
tv2= (TextView) this.findViewById(R.id.textView22);
tv3= (TextView) this.findViewById(R.id.textView33);
pressed = getResources().getDrawable(R.drawable.ui_table_tab_button);
released = getResources().getDrawable(
R.drawable.ui_table_tab_button_disabled);
ib1.setImageDrawable(pressed);
last = ib1;
ib1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
last.setImageDrawable(released);
ib1.setImageDrawable(pressed);
last = ib1;
tv.setText("I am super 1");
ib1.bringToFront();
tv1.bringToFront();
}
});
ib2.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
last.setImageDrawable(released);
ib2.setImageDrawable(pressed);
last = ib2;
tv.setText("TWO!!! I am super 2");
ib2.bringToFront();
tv2.bringToFront();
}
});
ib3.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
last.setImageDrawable(released);
ib3.setImageDrawable(pressed);
last = ib3;
tv.setText(" III !!! I am super 3");
ib3.bringToFront();
tv3.bringToFront();
}
});
}
}
here is the layout file I used (main.xml)
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<RelativeLayout
android:id="#+id/relativeLayout2"
android:layout_width="fill_parent"
android:layout_height="330dp"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true" >
<ImageView
android:id="#+id/imageView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:src="#drawable/ui_table_bg_coursedetail" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#000000" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/relativeLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/relativeLayout2"
android:layout_alignParentLeft="true"
android:layout_marginLeft="326dp" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:src="#drawable/ui_table_tab_button_disabled" />
<ImageView
android:id="#+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="90dp"
android:src="#drawable/ui_table_tab_button_disabled" />
<ImageView
android:id="#+id/imageView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="180dp"
android:src="#drawable/ui_table_tab_button_disabled" />
<TextView
android:id="#+id/textView11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/imageView1"
android:layout_marginLeft="50dp"
android:text="1"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000" />
<TextView
android:id="#+id/textView22"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/imageView2"
android:layout_marginLeft="50dp"
android:text="2"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000" />
<TextView
android:id="#+id/textView33"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/imageView3"
android:layout_marginLeft="50dp"
android:text="3"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textColor="#000000" />
</RelativeLayout>

Just a week now I used this : https://github.com/AdilSoomro/Iphone-Tab-in-Android
Very well worked! You can customize it as its in your first picture

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

One output and no dismiss - android

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