Android BroadcastReceiver

静态注册：

静态注册步骤：

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    1. 创建  BroadcastReceiver子类

package com.example.broadcastreceiver;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.widget.Toast;public class MyReceiver extends BroadcastReceiver {    @Override    public void onReceive(Context context, Intent intent) {        String msg=intent.getStringExtra("msg");        Toast.makeText(context, msg, 0).show();    }}

2. Manifest文件中注册并添加权限

//静态权限<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/><receiver android:name="com.example.broadcastreceiver.MyReceiver">    　　　　<intent-filter>    　　　　　　<action android:name="com.dragon.net"></action> 　　　   </intent-filter>　　</receiver> 

3.实例化 Intent,setAction

package com.example.broadcastreceiver;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity {    Button btn;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        btn=(Button)findViewById(R.id.button1);        //静态注册        //1. 创建  BroadcastReceiver子类        //2. Manifest文件中注册          //3.实例化 Intent,setAction        //4.发送        final Intent in=new Intent();        in.setAction("com.dragon.net");        in.putExtra("msg","静态注册");        btn.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                sendBroadcast(in);            }        });    }}

动态注册步骤：

    //动态注册        //1.创建IntentFilter对象        //2.为filter添加action        //3.创建MyDynamicReceiver对象        //4.注册        IntentFilter filter=new IntentFilter();        filter.addAction("com.zhangshuo.ok");        MyDynamicReceiver receiver=new MyDynamicReceiver();        registerReceiver(receiver, filter);        btn1.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                Intent in1=new Intent();                in1.setAction("com.zhangshuo.ok");                in1.putExtra("msg1","动态注册！");                sendBroadcast(in1);            }        });

MyDynamicReceiver类

package com.example.broadcastreceiver;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.widget.Toast;public class MyDynamicReceiver extends BroadcastReceiver {    @Override    public void onReceive(Context context, Intent intent) {        if(intent.getAction().equals("com.zhangshuo.ok")){            String msg1=intent.getStringExtra("msg1");            Toast.makeText(context, msg1, 0).show();        }    }}