这个需要在输出，点击start后会隔一会输出一行字，点end会结束输出。

 

Codepackage tk.handleractivity;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MyHangler extends Activity {	private Button startButton=null;	private Button endButton=null;	    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.myhangler);        startButton=(Button)findViewById(R.id.startButton);        startButton.setOnClickListener(new StartbuttonListener());        endButton=(Button)findViewById(R.id.endButton);        endButton.setOnClickListener(new EndbuttonListener());                    }    class StartbuttonListener implements OnClickListener{		@Override		public void onClick(View v) {			handler.post(updateThead);		}    	    }    class EndbuttonListener implements OnClickListener{		@Override		public void onClick(View v) {			handler.removeCallbacks(updateThead);		}    	    }        @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.myhangler, menu);        return true;    }    Handler handler=new Handler();    Runnable updateThead=new Runnable() {				@Override		public void run() {			System.out.println("UpdateThead");			handler.postDelayed(updateThead, 3000);		}	};}