自定义广播，有序广播，本地广播的使用

发送自定义广播：

类似于静态接收系统广播，不同的是要加一条发送广播命令，且在AndroidManifest中改自定义广播内容为要接收的广播。代码如下：

MainActivity.class：

Intent intent;
intent=new Intent("MyBroadcast");
sendBroadcast(intents);

Broadcast.class:

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;

public class Broadcast extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent){
        Toast.makeText(context,"MyBroadcast！",Toast.LENGTH_SHORT).show();
    }
}

AdroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="mole.test">
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <use-permission android:name="android.permission.RECEIVER_BOOT_COMPLETED"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <receiver
            android:name=".Broadcast"
            android:enabled="true"
            android:exported="true">
            <intent-filter>
<action android:name="MyBroadcast"/>
            </intent-filter>
        </receiver>
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>

发送有序广播：

类似于发送自定义广播，不同的是把发送广播的方法改为sendOrderBroadcast; 且在AndroidManifest中设置优先级，可以在接收器中阻断广播的继续传播。代码如下：

ActivityMain.class:

Intent intents=new Intent("MyBroadcast");
sendOrderedBroadcast(intents,null);  //发送有序广播 void sendOrderedBroadcast(Intent intent,String receiverPermission)

Broadcast.class:

import android.content.BroadcastReceiver;
        import android.content.Context;
        import android.content.Intent;
        import android.widget.Toast;

public class Broadcast extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent){
        Toast.makeText(context,"MyBroadcast！",Toast.LENGTH_SHORT).show();
        abortBroadcast(); //阻断广播的继续传播
    }
}

AndroidManifest.xml:

        <receiver
            android:name=".Broadcast"
            android:enabled="true"
            android:exported="true">
            <intent-filter android:priority="100">
                <action android:name="MyBroadcast"/>
            </intent-filter>
        </receiver>

本地广播：

本地广播可以保护广播不被外部应用截获。先获取本地广播监听器实例，再给IntentFilter添加广播内容，然后注册广播管理器，编写一个继承于BroadcastReceiver的监听器类，里面编写收到广播后要执行的操作，
最后发送广播。代码如下：

ActivityMain.class:

        LocalBroadcastManager localBroadcastManager;
        Broadcast localReceiver;
        localBroadcastManager=LocalBroadcastManager.getInstance(this);
        localReceiver=new Broadcast();
        IntentFilter intentFilter=new IntentFilter();
        intentFilter.addAction("MyBroadcast");广播监听内容
        localBroadcastManager.registerReceiver(localReceiver,intentFilter);//注册管理器
        Intent localIntent;
        localIntent= new Intent("MyLocalBroad");//广播发送内容
        localBroadcastManager.sendBroadcast(localIntent);

class Broadcasts extends BroadcastReceiver {//监听器    @Override    public void onReceive(Context context, Intent intent){        Toast.makeText(context,"我发送了一个本地广播",Toast.LENGTH_SHORT).show();    }}