package com.my; 
import android.app.Activity; 
import android.os.Bundle; 
import android.os.Handler; 
import android.os.Message; 
import android.util.Log; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
public class Demo_For_Copy extends Activity 
{ 
  public Button button; 
   
  public Handler mHandler=new Handler() 
  { 
    public void handleMessage(Message msg) 
    { 
      switch(msg.what) 
      { 
      case 1: 
        button.setText(R.string.text2); 
        break; 
      default: 
        break;    
      } 
      super.handleMessage(msg); 
    } 
  }; 
   
  /** Called when the activity is first created. */ 
  @Override 
  public void onCreate(Bundle savedInstanceState) 
  { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    button=(Button)findViewById(R.id.button); 
 
    Thread thread=new Thread(new Runnable() 
    { 
      @Override 
      public void run() 
      { 
        Log.e("1111", "111111111"); 
        // TODO Auto-generated method stub 
        Message message=new Message(); 
        message.what=1; 
        mHandler.sendMessage(message); 
      } 
    }); 
    thread.start(); 
  } 
} 

package com.my; 
import android.app.Activity; 
import android.os.Bundle; 
import android.os.Handler; 
import android.os.Message; 
import android.util.Log; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.LinearLayout; 
public class Title_Change_Demo extends Activity implements Runnable 
{ 
  public Button button; 
  public LinearLayout my_layout; 
   
  public Handler mHandler=new Handler() 
  { 
    public void handleMessage(Message msg) 
    { 
      switch(msg.what) 
      { 
      case 1: 
        button.setText(R.string.text2); 
        break; 
      default: 
        break;      
      } 
      my_layout.invalidate(); 
      super.handleMessage(msg); 
    } 
  }; 
   
  /** Called when the activity is first created. */ 
  @Override 
  public void onCreate(Bundle savedInstanceState) 
  { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
     
    button=(Button)findViewById(R.id.button); 
    my_layout=(LinearLayout)findViewById(R.id.my_layout); 
     
    Thread thread=new Thread(this); 
    thread.start(); 
  } 
   
  @Override 
  public void run() 
  { 
    Log.e("ok", "111111111"); 
    // TODO Auto-generated method stub 
    Message message=new Message(); 
    message.what=1; 
    mHandler.sendMessage(message); 
  } 
}