Android 定时更新view

刚刚开始想利用Timer去实现定时更新结果失败了。

之后使用了Handler去实现

package com.bw;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.widget.TextView;

public class TimeActivity extends Activity {
    public TextView timeTextView;
    
    private Handler handler = new Handler();
    private Runnable task = new Runnable() {
        
        @Override
        public void run() {
            // TODO Auto-generated method stub
            
            updateTimeTextView(); 
        }
    };
    
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.time);
        
        timeTextView = findViewById(R.id.timeTextView);
        
        handler.post(task); 
        
    }

    
    private void updateTimeTextView() {
        timeTextView.append("new");
    }

}