Handler的使用

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
public class MainActivity extends Activity {
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  mHandler.sendEmptyMessage(1);
 }
 private Handler mHandler = new Handler(){

  @Override
  public void handleMessage(Message msg) {
   // TODO Auto-generated method stub
   switch(msg.what){
   case 0:
    System.out.println("0-->>");
   case 1:
    System.out.println("1-->>");
   }
  }
 };
}

输出：

1-->>