简单使用handler.postDelayed()方法

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我是靠谱客的博主伶俐皮皮虾，这篇文章主要介绍简单使用handler.postDelayed()方法，现在分享给大家，希望可以做个参考。

相信android开发的朋友们，对于handler一定非常的熟悉，本文只讲handler.postDelayed()使用及具体的细节，不正确之处欢迎大家指正！！
下面给出具体的代码，并且附上运行后的结果

复制代码

package com.example.demo;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.View;
public class MainActivity extends Activity {
private Handler handler;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
}
private void init() {
handler = new Handler();
}
private Runnable mTimeTask = new Runnable() {
@Override
public void run() {
Log.d("MainActivity", "---------mTimeTask---------"+System.currentTimeMillis());
handler.postDelayed(this, 10*1000);
}
};
public void click(View view){
Log.d("MainActivity", "---------one---------"+System.currentTimeMillis());
handler.postDelayed(mTimeTask, 100);
handler.postDelayed(new Runnable() {
@Override
public void run() {
Log.d("MainActivity", "---------handler.postOne---------"+System.currentTimeMillis());
}
}, 5*1000);
handler.postDelayed(new Runnable() {
@Override
public void run() {
Log.d("MainActivity", "---------handler.postTwo---------"+System.currentTimeMillis());
}
}, 3*1000);
handler.postDelayed(new Runnable() {
@Override
public void run() {
Log.d("MainActivity", "---------handler.postThree---------"+System.currentTimeMillis());
}
}, 2 * 1000);
Log.d("MainActivity", "---------two---------"+System.currentTimeMillis());
}
}

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package com.example.demo;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.View;
public class MainActivity extends Activity {
private Handler handler;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
}
private void init() {
handler = new Handler();
}
private Runnable mTimeTask = new Runnable() {
@Override
public void run() {
Log.d("MainActivity", "---------mTimeTask---------"+System.currentTimeMillis());
handler.postDelayed(this, 10*1000);
}
};
public void click(View view){
Log.d("MainActivity", "---------one---------"+System.currentTimeMillis());
handler.postDelayed(mTimeTask, 100);
handler.postDelayed(new Runnable() {
@Override
public void run() {
Log.d("MainActivity", "---------handler.postOne---------"+System.currentTimeMillis());
}
}, 5*1000);
handler.postDelayed(new Runnable() {
@Override
public void run() {
Log.d("MainActivity", "---------handler.postTwo---------"+System.currentTimeMillis());
}
}, 3*1000);
handler.postDelayed(new Runnable() {
@Override
public void run() {
Log.d("MainActivity", "---------handler.postThree---------"+System.currentTimeMillis());
}
}, 2 * 1000);
Log.d("MainActivity", "---------two---------"+System.currentTimeMillis());
}
}

下面是执行的结果

复制代码

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09-09 20:45:18.498: D/MainActivity(1373): ---------one---------1441802718504
09-09 20:45:18.502: D/MainActivity(1373): ---------two---------1441802718504
09-09 20:45:18.602: D/MainActivity(1373): ---------mTimeTask---------1441802718604
09-09 20:45:20.506: D/MainActivity(1373): ---------handler.postThree---------1441802720510
09-09 20:45:21.506: D/MainActivity(1373): ---------handler.postTwo---------1441802721507
09-09 20:45:23.510: D/MainActivity(1373): ---------handler.postOne---------1441802723512
09-09 20:45:28.610: D/MainActivity(1373): ---------mTimeTask---------1441802728610
09-09 20:45:38.618: D/MainActivity(1373): ---------mTimeTask---------1441802738619
09-09 20:45:48.626: D/MainActivity(1373): ---------mTimeTask---------1441802748630