Im trying to make a simple quote app, but every time I hit my back button after my next button it will go to the next array and not backwards. Im using an int num to keep track of with quote the user is on.
here is my back button
package me.me.quote;
public class Startme extends Activity {
Random gen= new Random();
int num;
String[] quotes = new String[15];
public void next(View N){
quotes[0]= "Love is timeless";
quotes[1]= "I hate you";
quotes[2]= "arggg!";
quotes[3]= "The end is near";
quotes[4]= "Leave be";
if(num == 5){
num =0;}
TextView text = (TextView) findViewById(R.id.Quote);
text.setText(quotes[num++]);
TextView number = (TextView) findViewById(R.id.Qn);
number.setText(""+num);
}
public void back(View B){
quotes[0]= "Love is timeless";
quotes[1]= "I hate you";
quotes[2]= "arggg!";
quotes[3]= "The end is near";
quotes[4]= "Leave be";
TextView text = (TextView) findViewById(R.id.Quote);
text.setText(quotes[num--]);
TextView number = (TextView) findViewById(R.id.Qn);
number.setText(""+num);}
public void rand(View G) {
num = gen.nextInt(5);
quotes[0]= "Love is timeless";
quotes[1]= "I hate you";
quotes[2]= "arggg!";
quotes[3]= "The end is near";
quotes[4]= "Leave be";
TextView text = (TextView) findViewById(R.id.Quote);
text.setText(quotes[num]);
TextView number = (TextView) findViewById(R.id.Qn);
number.setText(""+num);
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.startquotes);
TextView Dark=(TextView)findViewById(R.id.Quote);
Typeface face=Typeface.createFromAsset(getAssets(), "fonts/font1.ttf");
Dark.setTypeface(face);
}
}
//LAYOUT FILE text.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"
android:orientation="vertical" >
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_alignParentTop="true"
android:text="VISIBLE EVERY TIME"
android:visibility="visible" />
<Button
android:id="#+id/back"
android:layout_width="wrap_content"
android:layout_alignParentLeft="true"
android:layout_height="wrap_content"
android:layout_below="#+id/textView"
android:text="NEXT" >
</Button>
<Button
android:id="#+id/next"
android:layout_alignParentRight="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/textView"
android:text="BACK" >
</Button>
</RelativeLayout>
///ACTIVITY CLASS
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class Test extends Activity {
Button next;
Button back ;
TextView quoteText;
int currentSelectedQuote=0;
String[] quote={"QUOTE1","QUOTE2","QUOTE3","QUOTE4","QUOTE5",};
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.text);
quoteText=(TextView)findViewById(R.id.textView);
quoteText.setText(quote[currentSelectedQuote]);
next=(Button)findViewById(R.id.next);
next.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
currentSelectedQuote++;
if(currentSelectedQuote == 5){
currentSelectedQuote =0;}
quoteText.setText(quote[currentSelectedQuote]);
}
});
back=(Button)findViewById(R.id.back);
back.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if(currentSelectedQuote==0)
{
currentSelectedQuote=4;
}
else
{
currentSelectedQuote--;
}
quoteText.setText(quote[currentSelectedQuote]);
// TODO Auto-generated method stub
}
});
}
}
Related
I need a button in android button.I need to show that when button was click it show the character 1 in the TextView field textView.
So here is my java code.
package com.example.kartikeya;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void buttonOnClick(){
Button button = (Button) findViewById(R.id.button);
final TextView textView = (TextView) findViewById(R.id.textView);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
textView.setText(textView.getText() + "" + 1);
}
});
}
This is my activity_main.xml file
<?xml version="1.0" encoding="utf-8"?>
<Button
android:text="#string/button"
android:id="#+id/button"
android:textColor="#0A0A0A"
android:textSize="25sp"
android:layout_width="80dp"
android:layout_height="80dp"
android:background="#drawable/buttonshape"
android:shadowColor="#A8A8A8"
android:layout_below="#+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="10dp"
android:clickable="true"
android:contentDescription="#string/click1"
android:contextClickable="true" />
<Button
You forget to call your method. buttonOnClick();
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
buttonOnClick();
}
Try this way
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button = (Button) findViewById(R.id.button);
final TextView textView = (TextView) findViewById(R.id.textView);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
textView.setText(textView.getText() + "" + 1);
}
});
}
You have missed the text view in your activity.xml file.
you never called this fuction... buttonOnClick()
In MainActivity write following code.
public class MainActivity extends AppCompatActivity {
Button button;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button) findViewById(R.id.clickBtn);
TextView textView = (TextView) findViewById(R.id.textView);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
textView.setText(textView.getText() + "" + 1);
}
});
}
}
activity_main.xml
<?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:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:id="#+id/textView"
android:textSize="30sp"/>
<Button
android:layout_width="100dp"
android:layout_height="100dp"
android:id="#+id/clickBtn"
android:layout_centerInParent="true"
android:text = "click me"/>
</RelativeLayout>
i need to change my text in the header when i click on the textview , i made my best effort to do somethings, but i m not getting the result
i will post the code and if anyone can help me out and tell me where i m going wrong , it will be of great help
this is my results.xml where my listview and the header with textview(the one which is to be set inside the java code) is there ,
<?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"
android:background="#color/White" >
<RelativeLayout
android:id="#+id/rltHeader"
android:layout_width="match_parent"
android:layout_height="60dp"
android:background="#27acc3" >
<ImageView
android:id="#+id/imgBackReuslt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_marginLeft="5dp"
android:onClick="onClick"
android:src="#drawable/arrow" />
<TextView
android:id="#+id/txtHeader"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textColor="#color/White"
android:textSize="20dp"
android:textStyle="bold" />
</RelativeLayout>
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#+id/rltHeader"
android:layout_marginRight="5dp"
android:divider="#color/LightGray"
android:dividerHeight="4px" >
</ListView>
</RelativeLayout>
this is my another xml where i have displayed how the listviews every Row will appear
<?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" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="100dp">
<RelativeLayout
android:id="#+id/rltRow"
android:layout_width="17dp"
android:layout_height="100dp"
android:layout_alignParentTop="true"
android:background="#drawable/r_list" >
</RelativeLayout>
<ImageView
android:id="#+id/imageView1"
android:layout_width="83dp"
android:layout_height="80dp"
android:layout_alignBottom="#+id/rltRow"
android:layout_alignParentRight="true" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/imageView1"
android:layout_marginLeft="16dp"
android:layout_marginTop="22dp"
android:layout_toRightOf="#+id/rltRow"
android:text="TextView"
android:textColor="#color/Black"
android:textSize="14dp" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/textView2"
android:layout_alignLeft="#+id/textView2"
android:text="TextView"
android:textColor="#color/Black" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/rltRow"
android:layout_alignLeft="#+id/textView2"
android:text="TextView"
android:textColor="#color/Black" />
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/textView2"
android:layout_alignTop="#+id/imageView1"
android:text="TextView"
android:textColor="#color/Black"
android:textSize="12dp" />
<TextView
android:id="#+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/textView2"
android:layout_below="#+id/textView2"
android:text="TextView"
android:textColor="#color/Black"
android:textSize="12dp" />
</RelativeLayout>
</RelativeLayout>
Now the Java part
This is the List_Activity class where i have displayed all the textviews , there are 6 textviews which when clicked , an activity will appear Results.java , for all the textviews when clicked the same activity Results.java is opened.
package com.demo.Test;
import android.app.ActionBar;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
public class List_Activity extends Activity {
ImageView iv;
TextView t1, t2, t3, t4, t5, t6;
String header_result = "";
#Override
protected void onCreate(Bundle savedInstanceState) {
//TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.list_info);
iv = (ImageView)findViewById(R.id.imgBackReuslt);
t1 = (TextView) findViewById(R.id.text1);
t2 = (TextView) findViewById(R.id.text2);
t3 = (TextView) findViewById(R.id.text3);
t4 = (TextView) findViewById(R.id.text4);
t5 = (TextView) findViewById(R.id.text5);
t6 = (TextView) findViewById(R.id.text6);
t1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
// String str = headervalue.getText().toString();
Intent intent = new Intent("com.demo.Test.RESULTS");
intent.putExtra("Results for Self", header_result);
startActivity(intent);
}
});
t2.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent("com.demo.Test.RESULTS");
intent.putExtra("Results for Mary(Wife)", header_result);
startActivity(intent);
}
});
t3.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
// name = t3.getText().toString();
Intent intent = new Intent("com.demo.Test.RESULTS");
intent.putExtra("Results for Alex(Child-1)", header_result);
startActivity(intent);
}
});
t4.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent("com.demo.Test.RESULTS");
intent.putExtra("Results for Steven(Child-2)", header_result);
startActivity(intent);
}
});
t5.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent("com.demo.Test.RESULTS");
intent.putExtra("Results for Robert(Father)", header_result);
startActivity(intent);
}
});
t6.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent("com.demo.Test.RESULTS");
intent.putExtra("Results for Diana(Mother)", header_result);
startActivity(intent);
}
});
}
public void onClick(View v) {
super.onBackPressed();
finish();
}
}
Now the main class Results.java , the activity which opens when clicked on the textviews described the previous class
package com.demo.Test;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class Results extends Activity{
TextView header;
ImageView iv;
ListView lv;
String title;
int[] images = { R.drawable.photo_bg, R.drawable.photo_bg,
R.drawable.photo_bg, R.drawable.photo_bg, R.drawable.photo_bg,
R.drawable.b_list, R.drawable.g_list, R.drawable.r_list,
R.drawable.v_list };
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.results);
iv = (ImageView) findViewById(R.id.imgBackReuslt);
header = (TextView) findViewById(R.id.txtHeader);
lv = (ListView) findViewById(R.id.listView1);
Bundle extras = getIntent().getExtras();
if (extras != null) {
title = extras.getString("header_result");
}
ResultsAdapter adapter = new ResultsAdapter(getBaseContext(), doc,
diag, dt, images, docname, diagname);
lv.setAdapter(adapter);
}
so what changes i have to make so that the header text gets changed when i click on the textviews in the List_Activity accordingly
any suggestions are welcomed
Do you mean changing the title of your action bar in each activity?
you can do it by calling this short code
getActionBar().setTitle("the title you want");
you can check this link http://developer.android.com/guide/topics/ui/actionbar.html
Hope it helps, and tell me if you need anything else ;)
according to what you want
t2.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent("com.demo.Test.RESULTS");
// this header_result you want pass it textview (txtHeader)
// prefer don't write long description in key of your extra
intent.putExtra("Results for Mary(Wife)", header_result);
startActivity(intent);
}
});
put in your jave file that contain
header = (TextView) findViewById(R.id.txtHeader);
header.setText("YourPassingValue"); // in your case getIntent().getStringExtra("Results for Mary(Wife)");
Refine your code
if you want move from activity yo anther
Intent intent = new Intent (YourFirstActivity.this , SecondActivity.class);
intent.putExtra("Result", PassingVariable); // prefer to make the key of your extra short to make east to call back , PassingVariable is what ever you want pass to the anther activity
startActivity(intent);
in Anther activity get you extra data
in your on create method
String PassedData = getIntent().getStringExtra("Result"); // Result is Your used key
make any thing with passed data
in Your case you want set it on Textview
t2.setText(PassedData);
I have 5 buttons every one has letter (Button "H",Button "E"Button "L"Button "L"Button "O") which make the word "HELLO". what I need is to make on click sequence to these buttons so if I click "H" first and "E" second until complete the word the app will do something, But if I click "L" first will give me some error message.
Any Idea to do this sequence?
Thanks
Just have an Array like this:
int[] tracker = new int[5];
and when you click a button, say "H", set tracker[0] = 1;
but when you click a button, say "L", check whether all the previous button values are 1. If yes, then set the corresponding tracker to 1 else, show an error message, and do not make any change to the tracker Array.
Something Like this:
onHClick{
tracker[0] = 1;
}
onEClick{
for(int i=0; i<1; i++){
if(tracker[i] == 0){
//show error message and return;
}else{
tracker[1] = 1;
return;
}
}
}
You can do something like
When activity started you just make other button Enabled = false of something like that. But make the first button Enabled. Don't make the Visible=false.
Now on click of Button "H" make enable Button "E" and so on.
So user will only have to click the button in sequence. Button can not be presses in any random manner.
Try this and let me know that it works or not.
Very Interesting and exactly same to your requirement..check once..
If you give any string other than HELLO also works better.
public class ButtonTest extends Activity
{
private String result="";
String sampleText = "HELLO";
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.test);
int noOfBtns = sampleText.length();
LinearLayout ll = (LinearLayout)findViewById(R.id.btnlay);
final TextView tvtext = (TextView)findViewById(R.id.result);
final Button[] btns = new Button[noOfBtns];
for(int i=0;i<noOfBtns;i++)
{
btns[i] = new Button(this);
btns[i].setText(sampleText.substring(i,i+1));
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
ll.addView(btns[i], lp);
final int j = i;
btns[i].setOnClickListener(new OnClickListener() {
public void onClick(View v)
{
System.out.println(j+" "+result.length());
if(j == result.length())
{
result = result+btns[j].getText().toString();
if(sampleText.startsWith(result))
{
tvtext.setText(result);
}
}
else
{
Toast.makeText(getApplicationContext(), "Wrong Button Pressed", Toast.LENGTH_SHORT).show();
}
}
});
}
}
}
Layout file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:id="#+id/result"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:textColor="#fff"/>
<LinearLayout
android:id="#+id/btnlay"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal">
</LinearLayout>
</LinearLayout>
Try the following
package com.example.buttonsequence;
import java.util.ArrayList;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity
{
ArrayList<Button> buttonList=null;
TextView resultTextView=null;
Button buttons[]=null;
String helloStr="HELLO";
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
buttonList=new ArrayList<Button>();
buttons=new Button[5];
this.resultTextView=(TextView) this.findViewById(R.id.result_text);
this.resultTextView.setText("");
buttons[0]=(Button)this.findViewById(R.id.h_button);
buttons[1]=(Button)this.findViewById(R.id.e_button);
buttons[2]=(Button)this.findViewById(R.id.l_button);
buttons[3]=(Button)this.findViewById(R.id.l2_button);
buttons[4]=(Button)this.findViewById(R.id.o_button);
for(int k=0;k<5;k++)
buttons[k].setOnClickListener(onClickListener);
Button button=(Button)this.findViewById(R.id.exit_button);
button.setOnClickListener
(
new OnClickListener()
{
#Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
finish();
}
}
);
}
OnClickListener onClickListener=new OnClickListener()
{
#Override
public void onClick(View v)
{
// TODO Auto-generated method stub
Button b=(Button)v;
buttonList.add(b);
int size=buttonList.size();
if(size>0)
{
StringBuilder resultBuilder=new StringBuilder();
for(int i=0;i<size;i++)
{
Button tempButton=buttonList.get(i);
if(tempButton==buttons[i])
{
resultBuilder.append(helloStr.charAt(i));
if(i==4)
{
resultTextView.setText(resultBuilder.toString()+" clicked");
buttonList.clear();
}
else
{
resultTextView.setText(resultBuilder.toString()+" clicked");
}
}
else
{
buttonList.remove(i);
Toast.makeText(getApplicationContext(), "No correctly clicked", Toast.LENGTH_SHORT).show();
break;
}
}
}
else
{
resultTextView.setText("Invalid pressed");
}
}
};
}
activity_main.xml
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/hello_world" />
<Button
android:id="#+id/h_button"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="H" />
<Button
android:id="#+id/e_button"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="E" />
<Button
android:id="#+id/l_button"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="L" />
<Button
android:id="#+id/l2_button"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="L" />
<Button
android:id="#+id/o_button"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="O" />
<TextView
android:id="#+id/result_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Small Text"
android:textAppearance="?android:attr/textAppearanceSmall" />
<Button
android:id="#+id/exit_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Exit" />
</LinearLayout>
I don't know exactly your flow but you can try this.
set Tag to each button as its Text, like this.
b.setTag("H");
and than after like this.
Button b;
String name = "";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String s = (String) v.getTag();
name +=s;
if( "HELLO".startsWith(name)){
<VALID>
}else{
<ERROR>
}
}
});
}
check the variable name on each button click with your original word i.e. HELLO like above.
I have an Edit button in my header. And I populating my TableLayout in a loop. In The loop I am inflating a Delete button.
Following is the code I have used :
MainActivity :
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.cookbooklist);
btnHeaderEdit = (Button)findViewById(R.id.btnEdit);
btnHeaderEdit.setVisibility(View.VISIBLE);
delete_button = (View)findViewById(R.id.btnDelete);
listTable = (TableLayout)findViewById(R.id.cookbookListTable);
btnHeaderEdit.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
delete_button.getTag();
delete_button.setVisibility(View.VISIBLE);
}
});
for(int i=0;i<=10;i++)
{
// Row to display news title
final TableRow newsRow = new TableRow(this);
newsRow.setMinimumHeight(200);
newsRow.setClickable(true);
newsRow.setTag(i);
newsRow.setBackgroundColor(Color.WHITE);
// Some other views
//create inflater
LayoutInflater inflater = getLayoutInflater();
delete_button = inflater.inflate(R.layout.deletebutton,
(ViewGroup) newsRow, false);
delete_button.setTag(i);
delete_button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
listTable.removeView(newsRow);
}
});
//Add views in table
newsRow.addView(delete_button);
listTable.addView(newsRow);
}
}
delebutton.xml :
<Button
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/btnDelete"
android:layout_width="100dip"
android:visibility="invisible"
android:layout_height="40dip"
android:padding="10sp"
android:text="Delete">
</Button>
Question :
The problem I am facing is that when I click the Edit button in header, Delete button appears only in the last row. When I setVisibility of Delete button to Visible in layout, it appears in all rows. But I want it to be invisible in the start. And on clicking the Edit button it should appear in all rows. I Am wondering how to achieve that.
Can someone assist me? Let me know if more code is needed.
Thanks
The problem I am facing is that when
Hi Stone i think you have to use a boolean flag. which wil determine whether the delete button should be visible or not. Try with the following example. Its working fine. On click of edit button if delete buttons are invisible i make all as visible and viceversa. Try the following code.
See My Working Example
Sample2.java
import java.util.ArrayList;
import java.util.Iterator;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Sample2 extends Activity {
boolean showDeleteButtonFlag = false;
Button delteBtn2 = null;
Button delteBtn1 = null;
Button editBtn = null;
ArrayList<Button> deleteButtonList = new ArrayList<Button>();
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.tablerow);
delteBtn1 = (Button) findViewById(R.id.delete1);
delteBtn2 = (Button) findViewById(R.id.delete2);
// add all delete buttons buttons to the array list
deleteButtonList.add(delteBtn1);
deleteButtonList.add(delteBtn2);
editBtn = (Button) findViewById(R.id.edit);
setVisibilityOfDeleteButtons();
editBtn.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
// if delete button is visible make it as invisible and viceversa
showDeleteButtonFlag = !showDeleteButtonFlag;
setVisibilityOfDeleteButtons();
}
});
}
void setVisibilityOfDeleteButtons(){
if(showDeleteButtonFlag){
Iterator<Button> itr =deleteButtonList.iterator();
while(itr.hasNext()){
itr.next().setVisibility(View.VISIBLE);
}
}else{
Iterator<Button> itr =deleteButtonList.iterator();
while(itr.hasNext()){
itr.next().setVisibility(View.INVISIBLE);
}
}
}
}
tablerow.xml
<?xml version="1.0" encoding="utf-8"?>
<TableLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TableRow>
<Button
android:id="#+id/edit"
android:layout_width="100dip"
android:layout_height="60dip"
android:text="Edit" />
<Button
android:id="#+id/delete1"
android:layout_width="100dip"
android:layout_height="60dip"
android:text="Delete" />
</TableRow>
<TableRow>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Password:"
android:textColor="#ffffff"
android:textStyle="bold" />
<Button
android:id="#+id/delete2"
android:layout_width="100dip"
android:layout_height="60dip"
android:text="Delete" />
</TableRow>
</TableLayout>
I am trying to fetch the EditText value on click of a button.
String ETValue = ((EditText)findViewById(R.id.ETID)).getText().toString().trim();
Every things works fine on other android versions, but on 1.6 I am getting ""(Empty) String.
Whats going wrong on Android 1.6, how this is happening?
Thanks
Screen Shots:
Code Reference :
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:layout_marginTop="10dip"
android:layout_marginLeft="5dip"
android:text="Type you text here"
android:id="#+id/TextView02"
android:layout_height="wrap_content"
android:textColor="#333333"
android:layout_width="fill_parent"
android:textSize="16dip">
</TextView>
<LinearLayout android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/ID1">
<EditText android:layout_marginLeft="5dip"
android:id="#+id/keyword"
android:hint="e.g. Text here"
android:textSize="17dip"
android:singleLine="true"
android:layout_height="wrap_content"
android:layout_width="250dip"/>
<Button android:id="#+id/btnID"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#FFFFFF"
android:background="#drawable/icon"
android:gravity="bottom"
android:paddingBottom="9dip"
android:layout_marginLeft="3dip"/>
</LinearLayout>
<LinearLayout android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/ID2"
android:visibility="gone">
<EditText android:layout_marginLeft="5dip"
android:id="#+id/keyword"
android:hint="e.g. Text here"
android:textSize="17dip"
android:singleLine="true"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_marginRight="5dip" />
</LinearLayout>
<Button android:text="Click" android:id="#+id/Button01" android:layout_width="fill_parent" android:layout_height="wrap_content"></Button>
</LinearLayout>
Etext.Java
public class EText extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
((LinearLayout)findViewById(R.id.ID1)).setVisibility(View.GONE);
((LinearLayout)findViewById(R.id.ID2)).setVisibility(View.VISIBLE);
Button but = (Button) findViewById(R.id.Button01);
but.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
String ETValue = ((EditText) findViewById(R.id.keyword)).getText().toString().trim();
Toast.makeText(EText.this, ETValue, Toast.LENGTH_SHORT).show();
}
});
} }
Even this way doesn't works
public class EText extends Activity {
/** Called when the activity is first created. */
EditText ETextt1 = null;
EditText ETextt2 = null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
if(Integer.parseInt(Build.VERSION.SDK) < 7){
((LinearLayout)findViewById(R.id.ID1)).setVisibility(View.GONE);
((LinearLayout)findViewById(R.id.ID2)).setVisibility(View.VISIBLE);
ETextt1 = ((EditText) findViewById(R.id.keyword1));
}else{
ETextt2 = ((EditText) findViewById(R.id.keyword2));
}
Button but = (Button) findViewById(R.id.Button01);
but.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
String ETValue = null;
if(null == ETextt1){
ETValue = ETextt2.getText().toString().trim();
}else if(null == ETextt2){
ETValue = ETextt1.getText().toString().trim();
}
Toast.makeText(EText.this, ETValue, Toast.LENGTH_SHORT).show();
}
});
} }
This Works Perfectly Fine :-)
package com.test.et;
import android.app.Activity;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.Toast;
public class EText extends Activity {
/** Called when the activity is first created. */
EditText ETextt1 = null;
EditText ETextt2 = null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
if(Integer.parseInt(Build.VERSION.SDK) < 7){
((LinearLayout)findViewById(R.id.ID1)).setVisibility(View.GONE);
((LinearLayout)findViewById(R.id.ID2)).setVisibility(View.VISIBLE);
}
//ETextt = ((EditText) findViewById(R.id.keyword1));
Button but = (Button) findViewById(R.id.Button01);
but.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
String ETValue = null;
if(Integer.parseInt(Build.VERSION.SDK) < 7){
ETValue = ((EditText) findViewById(R.id.keyword2)).getText().toString().trim();
}else{
ETValue = ((EditText) findViewById(R.id.keyword1)).getText().toString().trim();
}
Toast.makeText(EText.this, ETValue, Toast.LENGTH_SHORT).show();
}
});
} }
I have found the problems source. You declareted two EditTexts with the same id. To resolve problem just rename your EditText as keyword1 and keyword2. Then, get text from second EditText.
public class EdText extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
((LinearLayout)findViewById(R.id.ID1)).setVisibility(View.GONE);
((LinearLayout)findViewById(R.id.ID2)).setVisibility(View.VISIBLE);
Button but = (Button) findViewById(R.id.Button01);
but.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
String ETValue = ((EditText) findViewById(R.id.keyword2)).getText().toString().trim();
Toast.makeText(EdText.this, ETValue, Toast.LENGTH_SHORT).show();
}
});
} }
layout:
`
<TextView
android:layout_marginTop="10dip"
android:layout_marginLeft="5dip"
android:text="Type you text here"
android:id="#+id/TextView02"
android:layout_height="wrap_content"
android:textColor="#333333"
android:layout_width="fill_parent"
android:textSize="16dip">
</TextView>
<LinearLayout android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/ID1">
<EditText android:layout_marginLeft="5dip"
android:id="#+id/keyword1"
android:hint="e.g. Text here"
android:textSize="17dip"
android:singleLine="true"
android:layout_height="wrap_content"
android:layout_width="250dip"/>
<Button android:id="#+id/btnID"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#FFFFFF"
android:background="#drawable/icon"
android:gravity="bottom"
android:paddingBottom="9dip"
android:layout_marginLeft="3dip"/>
</LinearLayout>
<LinearLayout android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/ID2"
android:visibility="gone">
<EditText android:layout_marginLeft="5dip"
android:id="#+id/keyword2"
android:hint="e.g. Text here"
android:textSize="17dip"
android:singleLine="true"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_marginRight="5dip" />
</LinearLayout>
`
I have just finished struggling with EditText returning an empty string ("").
The reason was that setContentView(R.layout.main); was invoked twice:
private EditText editText1;
private EditText editText2;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main); /// !!!
editText1=(EditText)findViewById(R.id.editText1);
editText2=(EditText)findViewById(R.id.editText2);
// some really long and untrivial initialization stuff
setContentView(R.layout.main); /// !!!
}
It looks like editText1 and editText2 pointed into the parts of the previous incarnation of R.layout.main...
Here is my test example for your case:
public class EdText extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// string initialised here will always have initial value and never changes
final String ETValue = ((EditText) findViewById(R.id.EditText01)).getText().toString().trim();
Button but = (Button) findViewById(R.id.Button01);
but.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
Toast.makeText(EdText.this, ((EditText) findViewById(R.id.EditText01)).getText().toString().trim(), Toast.LENGTH_SHORT).show();
}
});
} }
Everything works fine for API 4. Maybe your probles connected with the moment when you read the string value. see my comment.
public class EditTextDemo extends Activity {
/** Called when the activity is first created. */
Button btnClick;
String ETValue;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ETValue = ((EditText)findViewById(R.id.editText1)).getText().toString().trim();
btnClick.setOnClickListener(new OnClickListener()
{
#Override
public void onClick(View view)
{
//assign a default value
ETValue.equals("Welcome!!");
Toast.makeText(getBaseContext(), "Value is:"+ETValue, Toast.LENGTH_SHORT).show();
Log.i("EditTextDemo","-----Value of EditText is:----------"+ETValue);
}
});
}}
You can also give value at runtime.. Also that value can be used for further coding.
Hope this will help!!