Android 广播接收器

 1 package com.example.metrox.broadcastreceiver1;
 2 
 3 import android.content.Intent;
 4 import android.content.IntentFilter;
 5 import android.provider.Settings;
 6 import android.support.v7.app.AppCompatActivity;
 7 import android.os.Bundle;
 8 import android.view.View;
 9 import android.widget.EditText;
10 
11 public class MainActivity extends AppCompatActivity {
12     EditText et;
13     private MyReceiver myReceiver = null;
14     @Override
15     protected void onCreate(Bundle savedInstanceState) {
16         super.onCreate(savedInstanceState);
17         setContentView(R.layout.activity_main);
18         et = (EditText) findViewById(R.id.editText);
19         findViewById(R.id.btnSendMessage).setOnClickListener(new View.OnClickListener() {
20             @Override
21             public void onClick(View view) {
22                // Intent intent = new Intent(MainActivity.this,MyReceiver.class);
23                 Intent intent = new Intent(MyReceiver.ACTION);
24                 intent.putExtra("data","这是发送到广播接收器的信息" + et.getText().toString() );
25                 //sendBroadcast(intent);
26                 sendOrderedBroadcast(intent,null);
27             }
28         });
29 
30         findViewById(R.id.btnRegReciver).setOnClickListener(new View.OnClickListener() {
31             @Override
32             public void onClick(View view) {
33                 if(myReceiver == null){
34                     myReceiver = new MyReceiver();
35                     registerReceiver(myReceiver,new IntentFilter(myReceiver.ACTION));
36                     System.out.println("Register");
37                 }
38             }
39         });
40 
41         findViewById(R.id.btnUnRegReciver).setOnClickListener(new View.OnClickListener() {
42             @Override
43             public void onClick(View view) {
44                 if(myReceiver != null){
45                     unregisterReceiver(myReceiver);
46                     System.out.println("UnRegister");
47                     myReceiver = null;
48                 }
49             }
50         });
51     }
52 }

 1 package com.example.metrox.broadcastreceiver1;
 2 
 3 import android.content.BroadcastReceiver;
 4 import android.content.Context;
 5 import android.content.Intent;
 6 
 7 public class MyReceiver extends BroadcastReceiver {
 8     public static final String ACTION = "com.example.metrox.broadcastreceiver1.intent.action.MyReceiver";
 9     public MyReceiver() {
10     }
11 
12     @Override
13     public void onReceive(Context context, Intent intent) {
14       //  System.out.println("已接收到信息,接收到的内容是" + intent.getStringExtra("data"));
15         System.out.println("MyReciver 接收到了信息");
16     }
17 }

 1 package com.example.metrox.broadcastreceiver1;
 2 
 3 import android.content.BroadcastReceiver;
 4 import android.content.Context;
 5 import android.content.Intent;
 6 
 7 public class MyReceiver1 extends BroadcastReceiver {
 8     public MyReceiver1() {
 9     }
10 
11     @Override
12     public void onReceive(Context context, Intent intent) {
13         System.out.println("MyReciver1接收到了信息");
14         abortBroadcast();
15     }
16 }

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.example.metrox.broadcastreceiver1">
 4 
 5     <application
 6         android:allowBackup="true"
 7         android:icon="@mipmap/ic_launcher"
 8         android:label="动态注册广播接收器"
 9         android:supportsRtl="true"
10         android:theme="@style/AppTheme">
11         <activity android:name=".MainActivity">
12             <intent-filter>
13                 <action android:name="android.intent.action.MAIN" />
14 
15                 <category android:name="android.intent.category.LAUNCHER" />
16             </intent-filter>
17         </activity>
18 
19         <receiver
20             android:name=".MyReceiver"
21             android:enabled="true"
22             android:exported="true">
23             <intent-filter android:priority="5">
24                 <action android:name="com.example.metrox.broadcastreceiver1.intent.action.MyReceiver" />
25             </intent-filter>
26         </receiver>
27         <receiver
28             android:name=".MyReceiver1"
29             android:enabled="true"
30             android:exported="true">
31             <intent-filter android:priority="8">
32                 <action android:name="com.example.metrox.broadcastreceiver1.intent.action.MyReceiver" />
33             </intent-filter>
34         </receiver>
35     </application>
36 
37 </manifest>

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     android:paddingBottom="@dimen/activity_vertical_margin"
 7     android:paddingLeft="@dimen/activity_horizontal_margin"
 8     android:paddingRight="@dimen/activity_horizontal_margin"
 9     android:paddingTop="@dimen/activity_vertical_margin"
10     tools:context="com.example.metrox.broadcastreceiver1.MainActivity">
11 
12     <TextView
13         android:layout_width="wrap_content"
14         android:layout_height="wrap_content"
15         android:text="Hello World!"
16         android:id="@+id/textView" />
17 
18     <EditText
19         android:layout_width="match_parent"
20         android:layout_height="wrap_content"
21         android:id="@+id/editText"
22         android:layout_below="@+id/textView"
23         android:layout_alignParentLeft="true"
24         android:layout_alignParentStart="true" />
25 
26     <Button
27         android:layout_width="wrap_content"
28         android:layout_height="wrap_content"
29         android:text="发送信息"
30         android:id="@+id/btnSendMessage"
31         android:layout_below="@+id/editText"
32         android:layout_alignParentLeft="true"
33         android:layout_alignParentStart="true" />
34 
35     <Button
36         android:layout_width="wrap_content"
37         android:layout_height="wrap_content"
38         android:text="注册接收器"
39         android:id="@+id/btnRegReciver"
40         android:layout_below="@+id/btnSendMessage"
41         android:layout_alignParentLeft="true"
42         android:layout_alignParentStart="true"
43         android:layout_marginTop="60dp" />
44 
45     <Button
46         android:layout_width="wrap_content"
47         android:layout_height="wrap_content"
48         android:text="注销接收器"
49         android:id="@+id/btnUnRegReciver"
50         android:layout_below="@+id/btnRegReciver"
51         android:layout_alignParentLeft="true"
52         android:layout_alignParentStart="true"
53         android:layout_marginTop="68dp" />
54 </RelativeLayout>