动态注册的广播接收器

// MainActivity.javapublic class MainActivity extends AppCompatActivity {    private IntentFilter mIntentFilter;    private DynamicBroadcastReceiver mDynamicBroadcastReceiver;    @Override    protected void onCreate(Bundle savedInstanceState) {        ....        mIntentFilter = new IntentFilter();        mIntentFilter.addAction("THIS_IS_A_DYNAMIC_BROADCAST");        mDynamicBroadcastReceiver = new DynamicBroadcastReceiver();        // 动态注册广播接收器        registerReceiver(mDynamicBroadcastReceiver, mIntentFilter);        // 发送广播        Intent intent = new Intent("THIS_IS_A_DYNAMIC_BROADCAST");        sendBroadcast(intent);    }    @Override    protected void onDestroy() {        ....        unregisterReceiver(mDynamicBroadcastReceiver);    }    class DynamicBroadcastReceiver extends BroadcastReceiver {        @Override        public void onReceive(Context context, Intent intent) {            Log.d("Guu", "receive dynamic broadcast!");        }    }}

静态注册的广播接收器

// AndroidManifest.xml"http://schemas.android.com/apk/res/android"          package="com.example.broadcast">    "android.permission.RECEIVE_BOOT_COMPLETED" />    // 静态注册广播接收器        ".StaticBroadcastReceiver">                            "THIS_IS_A_STATIC_BROADCAST" />                        // StaticBroadcastReceiver.javapublic class StaticBroadcastReceiver extends BroadcastReceiver {    @Override    public void onReceive(Context context, Intent intent) {        Log.d("Guu", "receive static broadcast!");    }}// MainActivity.javapublic class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        ....        // 发送广播        intent = new Intent("THIS_IS_A_STATIC_BROADCAST");        sendBroadcast(intent);    }}

发送有序广播

1. 发送有序广播的方法：

intent = new Intent("THIS_IS_A_STATIC_BROADCAST");sendOrderedBroadcast(intent, null);

2. 设置广播接收器的优先级：

// 静态注册filter android:priority="100">// 动态注册mIntentFilter.setPriority(100);

3. 截断广播的方法：

public void onReceive(Context context, Intent intent) {    ....    abortBroadcast();}

使用本地广播

// MainActivity.javapublic class MainActivity extends AppCompatActivity {    private IntentFilter mIntentFilter;    private DynamicBroadcastReceiver mDynamicBroadcastReceiver;    private LocalBroadcastManager mLocalBroadcastManager;    @Override    protected void onCreate(Bundle savedInstanceState) {        ....        mLocalBroadcastManager = LocalBroadcastManager.getInstance(this);        mIntentFilter = new IntentFilter();        mIntentFilter.addAction("THIS_IS_A_DYNAMIC_BROADCAST");         mDynamicBroadcastReceiver = new DynamicBroadcastReceiver();        // 使用 LocalBroadcastManager 注册广播接收器        // 注意：本地广播只能动态注册        mLocalBroadcastManager.registerReceiver(mDynamicBroadcastReceiver, mIntentFilter);        Intent intent = new Intent("THIS_IS_A_DYNAMIC_BROADCAST");        // 使用 LocalBroadcastManager 发送广播        mLocalBroadcastManager.sendBroadcast(intent);    }    @Override    protected void onDestroy() {        ....        unregisterReceiver(mDynamicBroadcastReceiver);    }    class DynamicBroadcastReceiver extends BroadcastReceiver {        @Override        public void onReceive(Context context, Intent intent) {            Log.d("Guu", "receive dynamic broadcast!");        }    }}

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