Keep using the main.xml and mycolor.xml
Modify Java code
package com.exercise.AndroidColor;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
public class AndroidColor extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final LinearLayout backGround = (LinearLayout)findViewById(R.id.background);
Button whiteButton = (Button)findViewById(R.id.whitebutton);
Button redButton = (Button)findViewById(R.id.redbutton);
Button greenButton = (Button)findViewById(R.id.greenbutton);
Button blueButton = (Button)findViewById(R.id.bluebutton);
whiteButton.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
backGround.setBackgroundResource(android.R.color.white);
}});
redButton.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
backGround.setBackgroundColor(0xff000000 + 0xff0000);
}});
greenButton.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
backGround.setBackgroundResource(R.color.green);
}});
blueButton.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
backGround.setBackgroundResource(R.color.blue);
}});
}
}
Download the files.
