The android development tutorial USES looper to process message queues
- 2020-05-24 06:10:41
- OfStack
package com.yanjun;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
import android.os.Message;
public class HandlerActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// through HandlerThread Object to implement the use looper The ability to process message queues
HandlerThread handlerThread = new HandlerThread("handlerThread");
// Must be called to make the thread run start()
handlerThread.start();
MyHandler myHandler = new MyHandler(handlerThread.getLooper());
Message message = myHandler.obtainMessage();
// the message Sent to the myHandler.obtainMessage() At the target, it is sent to whoever calls it
Bundle bundle = new Bundle();
// through bundle Add data
bundle.putInt("age", 10);
bundle.putString("name", "john");
// will bundle Information is added
message.setData(bundle);
message.sendToTarget();
}
class MyHandler extends Handler {
public MyHandler(Looper looper) {
super(looper);
// TODO Auto-generated constructor stub
}
@Override
public void handleMessage(Message msg) {
Bundle bundle = msg.getData();
int age = bundle.getInt("age");
String name = bundle.getString("name");
System.out.println(" age " + age + " The name " + name);
}
}