在Service中使用广播接受者

时间：2023-12-15 12:02:26

1、清单文件

 <service android:name="com.example.callmethod.MyService"></service>

2、开启服务和发送广播

 package com.example.callmethod;

 import android.os.Bundle;

 import android.app.Activity;

 import android.content.Intent;

 import android.view.Menu;

 import android.view.View;

 public class MainActivity extends Activity {

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.activity_main);

         Intent intent = new Intent(this, MyService.class);

         startService(intent);

     }

     public void call(View view){

         //发送广播

         Intent intent = new Intent();

         intent.setAction("com.example.callMethod");

         sendBroadcast(intent);

     }

 }

3、实现Service

 package com.example.callmethod;

 import android.app.Service;

 import android.content.BroadcastReceiver;

 import android.content.Context;

 import android.content.Intent;

 import android.content.IntentFilter;

 import android.os.IBinder;

 import android.widget.Toast;

 public class MyService extends Service {

     private MyRecervice recervice;

     @Override

     public IBinder onBind(Intent intent) {

         // TODO Auto-generated method stub

         return null;

     }

     @Override

     public void onCreate() {

         //采用代码的方式实现广播接受者,所以不需要再清单文件中进行配置

         recervice = new MyRecervice();

         IntentFilter filter = new IntentFilter();

         filter.addAction("com.example.callMethod");//说明它接收的action

         registerReceiver(recervice, filter);

         super.onCreate();

     }

     @Override

     public void onDestroy() {

         // TODO Auto-generated method stub

         unregisterReceiver(recervice);

         recervice = null;

         super.onDestroy();

     }

     public void methodInService(){

         Toast.makeText(this, "我是服务的方法", 0).show();

     }

     private class MyRecervice extends BroadcastReceiver{

         //当接收到广播后，调用的方法

         @Override

         public void onReceive(Context context, Intent intent) {

             // TODO Auto-generated method stub

             System.out.println("我是服务内部的广播接收者，接收了广播事件");

             methodInService();

         }

     }

 }

相关文章