应用程序被杀死时没有调用广播接收器

Question

我正在使用 BroadCastReceiver 收听 GCM 消息。即使应用程序被杀死并且手机被锁定，我也希望我的通知能够到达。但是当应用程序被杀死时，我的广播接收器的 onReceive 没有被触发，尽管当应用程序在后台时它可以正常工作。 我已经在 AndroidManifest.xml 中声明了我的 BroadCastReceiver，并且不要在应用程序的任何位置手动取消注册广播接收器。

GcmBroadcastReceiver.java

public class GcmBroadcastReceiver extends WakefulBroadcastReceiver {
PowerManager powermanager;
WakeLock wakeLock;
@Override
public void onReceive(Context context, Intent intent) {

    powermanager=  ((PowerManager)context.getSystemService(Context.POWER_SERVICE));
    wakeLock=powermanager.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, "tag");
    wakeLock.acquire();

    Log.d("GCM broadcast receiver", intent+"");
    Bundle extras = intent.getExtras();
    String msg = intent.getStringExtra("message");
    System.out.println("MESSAGE IS---->>>"+msg);

    ComponentName comp = new ComponentName(context.getPackageName(),
            GCMNotificationIntentService.class.getName());
    startWakefulService(context, (intent.setComponent(comp)));
    setResultCode(Activity.RESULT_OK);

}
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.tcs.hcp_android"
android:versionCode="3"
android:versionName="1.2" >

<supports-screens
    android:anyDensity="true"
    android:largeScreens="true"
    android:normalScreens="true"
    android:requiresSmallestWidthDp="120"
    android:resizeable="true"
    android:smallScreens="true"
    android:xlargeScreens="true" />

<permission
    android:name="com.tcs.hcp_android"
    android:label="my_permission"
    android:protectionLevel="dangerous" >
</permission>

<uses-sdk
    android:minSdkVersion="19"
    android:targetSdkVersion="24" />

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.CAPTURE_AUDIO_OUTPUT" />
<uses-permission android:name="android.permission.CAPTURE_VIDEO_OUTPUT" />
<uses-permission android:name="android.permission.CAPTURE_SECURE_VIDEO_OUTPUT" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.tcs.hcp_android.permission.C2D_MESSAGE" />
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.BROADCAST_STICKY" />
<uses-permission android:name="android.permission.DISABLE_KEYGUARD" />
<uses-permission android:name="com.google.android.c2dm.permission.SEND" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />

<application
    android:allowBackup="false"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:windowSoftInputMode="adjustNothing" >

    <!-- added by disha  android:windowSoftInputMode="adjustNothing" > -->
    <activity
        android:name="com.tcs.hcp_android.SplashScreen"
        android:label="@string/app_name"
        android:screenOrientation="portrait"
        android:theme="@style/AppTheme" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.tcs.hcp_android.MainActivity"
        android:configChanges="orientation|keyboardHidden"
        android:label="@string/app_name"
        android:screenOrientation="portrait"
        android:showOnLockScreen="true" >
    </activity>

    <receiver
        android:name="com.tcs.hcp_android.GcmBroadcastReceiver"
        android:permission="com.google.android.c2dm.permission.SEND" >
        <intent-filter>
            <action android:name="com.google.android.c2dm.intent.RECEIVE" />
            <action android:name="com.google.android.c2dm.intent.REGISTRATION" />

            <category android:name="com.tcs.hcp_android" />
        </intent-filter>
    </receiver>
    <receiver
        android:name="com.tcs.hcp_android.NetworkChangeReceiver"
        android:label="NetworkChangeReceiver"
        android:permission="com.tcs.hcp_android" >
        <intent-filter>
            <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
            <action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
        </intent-filter>
    </receiver>

    <activity
        android:name="com.tcs.hcp_android.Offline"
        android:configChanges="orientation|keyboardHidden"
        android:label="@string/app_name"
        android:permission="com.tcs.hcp_android"
        android:screenOrientation="portrait" >
    </activity>

    <receiver
        android:name="com.tcs.hcp_android.NotificationDismissedReceiver"
        android:exported="false" >
    </receiver>

    <activity
        android:name="com.tcs.hcp_android.NotificationSend"
        android:configChanges="orientation|keyboardHidden"
        android:label="@string/app_name"
        android:screenOrientation="portrait"
        android:showOnLockScreen="true" >
    </activity>

    <service
        android:name="com.tcs.hcp_android.GCMNotificationIntentService"
        android:exported="false"
        android:permission="com.tcs.hcp_android"
        android:screenOrientation="portrait"
        android:showOnLockScreen="true" />
</application>

Answer 1

后者可能看起来相对不寻常：为什么我们真的要停止我们想要保持活动的服务？因为如果我们不停止它，服务将随着我们的应用程序而死。相反，通过停止服务，我们将强制服务调用我们自己的 Destroy，这将强制应用程序在它死后重建它。 这是服务：

 @Override
public void onDestroy() {
    super.onDestroy();
    Log.i("EXIT", "ondestroy!");
    Intent broadcastIntent = new Intent("ActivityRecognition.RestartSensor");
    sendBroadcast(broadcastIntent);
    stoptimertask();
}