Procedure
- Start Eclipse IDE.
- Create a new project.
- Create a MainActivity.java file.
- Create an XML file in which there are two TableRows having two buttons each.
The following is an example:
<TableRow android:layout_width="fill_parent"
android:layout_height="wrap_content">
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/b1"
android:text="Background"/>
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/b2"
android:text="Yellow"/>
</TableRow>
In
the onClick function add logic for each button using
setBackgroundColor.
The code is as follows.
MainActivity.java
package com.example
.colorsevent;
import android
.os.Bundle;
import android
.app
.Activity;
import android
.graphics
.Color;
import android
.view
.Menu;
import android
.view
.View;
import android
.view
.View
.OnClickListener;
import android
.widget
.Button;
import android
.widget
.TableLayout;
import android
.widget
.Toast;
public class
MainActivity extends Activity implements OnClickListener
{ Button b1
,b2
,b3
,b4;
TableLayout tt;
@Override
protected void onCreate
(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R
.layout
.activity_main);
b1=
(Button
)findViewById
(R.id.b1);
b2=
(Button
)findViewById
(R.id.b2);
b3=
(Button
)findViewById
(R.id.b3);
b4=
(Button
)findViewById
(R.id.b4);
tt=
(TableLayout
)findViewById(R.id.tt);
b1.setOnClickListener
(this);
b2.setOnClickListener
(this);
b3.setOnClickListener
(this);
b4.setOnClickListener
(this);
}
public void onClick
(View v) {
// TODO Auto-generated method stub
switch (
v.getId()) {
case R.id.b1:
//
tt.setBackgroundColor
(Color
.RED);
tt.setBackgroundDrawable(getResources
()
.getDrawable(R
.drawable.ts));
break;
case R.id.b2:
tt.setBackgroundColor
(Color
.YELLOW);
break;
case R.id.b3:
tt.setBackgroundColor
(Color
.BLUE);
Toast
.makeText(getApplicationContext
(), "Hello Sangeet, Good Morning", 100)
.show
();
break;
case R.id.b4:
tt.setBackgroundColor
(Color
.GREEN);
Toast
.makeText(getApplicationContext
(), "Hello Abhijeet, Good Morning", 100)
.show
();
break;
default:
break;
}
}
}
activity_main.xml
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:id="@+id/tt"
android:layout_height="match_parent">
<View android:layout_width="fill_parent"
android:layout_height="10px"
android:background="#ff0000"/>
<TableRow android:layout_width="fill_parent"
android:layout_height="wrap_content">
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/b1"
android:text="Background"/>
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/b2"
android:text="Yellow"/>
</TableRow>
<View android:layout_width="fill_parent"
android:layout_height="10px"
android:background="#ff0000"/>
<TableRow android:layout_width="fill_parent"
android:layout_height="wrap_content">
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/b3"
android:text="Blue"/>
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/b4"
android:text="Green"/>
</TableRow>
<View android:layout_width="fill_parent"
android:layout_height="10px"
android:background="#ff0000"/>
</TableLayout>
Output
By clicking on the Blue button:
![]()
By clicking on
the Green button:![]()
By clicking on the Background button:
![]()
By clicking on the Yellow button:
![]()