方法一:Handler+Thread package com.xunfang.handerDemo; import Android.app.Activity; impor
方法一:Handler+Thread
package com.xunfang.handerDemo;
import Android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.TextView;
public class HanderDemoActivity extends Activity {
TextView tvShow;
private int i = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tvShow = (TextView) findViewById(R.id.tv_show);
new Thread(new ThreadShow()).start();
}
// handler类接收数据
Handler handler = new Handler() {
public void handleMessage(Message msg) {
if (msg.what == 1) {
tvShow.setText(Integer.toString(i++));
System.out.println("receive....");
}
};
};
// 线程类
class ThreadShow implements Runnable {
@Override
public void run() {
// TODO Auto-generated method stub
while (true) {
try {
Thread.sleep(1000);
Message msg = new Message();
msg.what = 1;
handler.sendMessage(msg);
System.out.println("send...");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.out.println("thread error...");
}
}
}
}
}
方法二:Handler类自带的postDelyed
package com.xunfang.handerDemo;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.widget.TextView;
public class HanderDemoActivity extends Activity {
TextView tvShow;
private int i = 0;
private int TIME = 1000;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tvShow = (TextView) findViewById(R.id.tv_show);
handler.postDelayed(runnable, TIME); //每隔1s执行
}
Handler handler = new Handler();
Runnable runnable = new Runnable() {
@Override
public void run() {
// handler自带方法实现定时器
try {
handler.postDelayed(this, TIME);
tvShow.setText(Integer.toString(i++));
System.out.println("do...");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.out.println("exception...");
}
}
};
}
方法三:Handler+Timer+TimerTask
package com.xunfang.handerDemo;
import java.util.Timer;
import java.util.TimerTask;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.TextView;
public class HanderDemoActivity extends Activity {
TextView tvShow;
private int i = 0;
private int TIME = 1000;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tvShow = (TextView) findViewById(R.id.tv_show);
timer.schedule(task, 1000, 1000); // 1s后执行task,经过1s再次执行
}
Handler handler = new Handler() {
public void handleMessage(Message msg) {
if (msg.what == 1) {
tvShow.setText(Integer.toString(i++));
}
super.handleMessage(msg);
};
};
Timer timer = new Timer();
TimerTask task = new TimerTask() {
@Override
public void run() {
// 需要做的事:发送消息
Message message = new Message();
message.what = 1;
handler.sendMessage(message);
}
};
}
以上就是对Android 定时器的资料整理后续继续补充相关知识,谢谢大家对本站的支持!
您可能感兴趣的文章:Android定时器Timer的停止和重启实现代码Android实现定时器的五种方法实例详解Android 实现定时器的四种方式总结及实现实例Android控件Chronometer定时器的实现方法Android实现定时器的3种方法Android中使用定时器的三种方法Android三种实现定时器的方法基于Android中实现定时器的3种解决方法详解Android实现定时器的几种方法
--结束END--
本文标题: Android 三种实现定时器详解及实现方法
本文链接: https://www.lsjlt.com/news/24012.html(转载时请注明来源链接)
有问题或投稿请发送至: 邮箱/279061341@qq.com QQ/279061341
下载Word文档到电脑,方便收藏和打印~
2024-01-21
2023-10-28
2023-10-28
2023-10-27
2023-10-27
2023-10-27
2023-10-27
回答
回答
回答
回答
回答
回答
回答
回答
回答
回答
0