应用程序关闭时推送通知 [英] Push Notifications when app is closed

问题描述

不知道是否可以在应用程序完全关闭的情况下收到来自谷歌云消息的通知?

Do you know if is it possible to receive notifications from google cloud message when the application is fully closed?

我知道它是打开的还是在后台是的，但是可以通过任何方式对其进行编程以接收它们吗?

I know if it's open or in background yes, but can it be programmed any way in order to receive them?

当应用程序关闭时，我继续操作而没有收到通知.

I continue without receiving notifications when the app is closed.

我附上了代码，以防我有错误而我没有在看.

I attached the code in case I have an error and I am not watching it.

清单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.frab"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="com.frab.permission.C2D_MESSAGE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.VIBRATE" />
<permission
android:name="com.frab.permission.C2D_MESSAGE"
android:protectionLevel="signature" />

<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />

<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.frab.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

<receiver
android:name=".GGMBroadcastReceiver"
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.something" />
</intent-filter>
</receiver>

<service android:name=".GCMIntentService" />
</application>

</manifest>

广播接收器

package com.something;

import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.NotificationCompat;
import android.util.Log;

import com.activities.SignIn;
import com.google.android.gcm.GCMBaseIntentService;
import com.objects.Globals;

public class GCMIntentService extends GCMBaseIntentService {
private static final String TAG = "GGM <-----> FRAB";
private Bundle extras;

public GCMIntentService() {
super(Globals.SENDER_ID);
}

@Override
public void onDestroy() {
Log.d(TAG, "terminando servicio");
}

@Override
protected void onRegistered(Context context, String registrationId) {
Log.i(TAG, "onRegistered: registrationId=" + registrationId);
}

@Override
protected void onUnregistered(Context context, String registrationId) {
Log.i(TAG, "onUnregistered: registrationId = " + registrationId);
}
@Override
protected void onMessage(Context context, Intent data) {
extras = data.getExtras();
String message = extras.getString("msg");
Log.d("******", message);
sendNotification(message);
}

@Override
protected void onError(Context arg0, String errorId) {
Log.e(TAG, "onError: errorId = " + errorId);
}    
}

package com.something;

import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.support.v4.content.WakefulBroadcastReceiver;

public class GGMBroadcastReceiver extends WakefulBroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
// Explicitly specify that GcmIntentService will handle the intent.
ComponentName comp = new ComponentName(context.getPackageName(), GCMIntentService.class.getName());
// Start the service, keeping the device awake while it is launching.
startWakefulService(context, (intent.setComponent(comp)));
setResultCode(Activity.RESULT_OK);
}
}

当应用打开时:OK

当应用在后台时:好的

当应用被用户强行关闭时:通知未到达

When the app is closed forcefully by the user : notifications don't arrive

有什么问题?

非常感谢.

推荐答案

是的，可以在应用程序完全关闭时接收来自谷歌云消息的通知".

Yes, it is possible 'to receive notifications from google cloud message when the application is fully closed'.

事实上，广播接收器是 GCM 用来传递消息的机制.您需要实现一个 BroadcastReceiver 并在 AndroidManifest.xml 中声明它.

Infact, A broadcast receiver is the mechanism GCM uses to deliver messages. You need to have implement a BroadcastReceiver and declare it in the AndroidManifest.xml.

请参考以下代码片段.

AndroidManifest.xml

<receiver
    android:name=".GcmBroadcastReceiver"
    android:permission="com.google.android.c2dm.permission.SEND" >
    <intent-filter>
        <!-- Receives the actual messages. -->
        <action android:name="com.google.android.c2dm.intent.RECEIVE" />
        <category android:name="com.google.android.gcm.demo.app" />
    </intent-filter>
</receiver>
<service android:name=".GcmIntentService" />

Java 代码

public class GcmBroadcastReceiver extends WakefulBroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // Explicitly specify that GcmIntentService will handle the intent.
        ComponentName comp = new ComponentName(context.getPackageName(),
                GcmIntentService.class.getName());
        // Start the service, keeping the device awake while it is launching.
        startWakefulService(context, (intent.setComponent(comp)));
        setResultCode(Activity.RESULT_OK);
    }
}

当 GCM 向您的设备发送消息时，BroadcastReceiver 将接收该消息并调用 onReceive() 函数，您可以在其中启动服务以实际执行预期的给你的任务.

When GCM delivers a message to your device, BroadcastReceiver will receive the message and call the onReceive() function, wherein you may start a service to actually perform the intended task for you.

上面的代码示例使用称为 WakefulBroadcastReceiver 的专用 BroadcastReceiver，它确保设备不会进入睡眠状态，而服务正在执行其工作.

The above Code example uses a specialized BroadcastReceiver called WakefulBroadcastReceiver, which makes sure that the device doesn't go to sleep, while the service is doing its work.

请参阅官方 Android 页面:https://developer.android.com/google/gcm/client.html

Refer to the Official Android Page for the same: https://developer.android.com/google/gcm/client.html

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