android - 如何在 Oreo 中发送 BroadCast？

Question

这是我的类(class)，我正在从服务器获取通知->

 public class GCMListener_Service extends GcmListenerService {
    @Override
    public void onMessageReceived(String from, Bundle data) {
    Intent notificationReceived = new Intent("com.example.mypackage”);
    notificationReceived.putExtra(“key", fromWhere);
    sendBroadcast(notificationReceived);
    }
    }

这是我在 AndroidManifiestfile 中声明的:

<service
    android:name="com.example.pushnotification.GCMListener_Service"
    android:exported="false">
    <intent-filter>
        <action android:name="com.google.android.c2dm.intent.RECEIVE" />
    </intent-filter>
</service>

我在这里尝试获取通知:

public class PushMessageReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
    Timber.d("Received push notification”);
}
}

这是我在 AndroidManifiest 文件中的接收器->

<receiver
    android:name=".notification.PushMessageReceiver"
    android:exported="false">
    <intent-filter>
        <action android:name="com.example.mobile.pushnotification.notificationReceived" />
    </intent-filter>
</receiver>

使用 android 8 (oreo) 下面的给定代码，它工作正常我在 onReceive 方法的 PushMessageReceiver 类中获取和接收通知消息，但在 android 中我无法获得通知无法发送广播任何人都可以建议我如何发送在 Android O 中广播。

Answer 1

在您的 Application 类中注册和取消注册类，如下所示:

    public class YourProjectApplication extends MultiDexApplication {
   private static YourProjectApplication sInstance;



    public static YourProjectApplication getInstance() {
            return sInstance;

        }

     @Override
    public void onCreate() {
        super.onCreate();
        sInstance = this;
        }

         public void registerInternetConnectivityBroadCast(){
                IntentFilter intentFilter = new IntentFilter();
                intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
                registerReceiver(appInternetStatus, intentFilter);

        }

        public void unSetConnectivityListener(AppInternetStatus.InternetConnectivityReceiverListener listener) {
            try {
                unregisterReceiver(appInternetStatus);
            }catch (Exception e){
              e.printStackTrace();
            }

            try {
                AppInternetStatus.internetConnectivityReceiverListener = listener;
            }catch (Exception e){
               e.printStackTrace();
            }
        }

然后在您的 mainActivity 类(也可以是您的基类)中像这样调用您的广播 receiver:

 getInstance().registerBroadCast();
 getInstance().setConnectivityListener(this);

为了注销您的通知。在您的主要 Activity 类的 onPause() 方法中:

@Override
protected void onPause() {
    super.onPause(); 
    getInstance().unSetConnectivityListener(null);
}