最近我在我的应用程序上实现了 GCM。我按照这个网站上的教程代码进行操作
http://javapapers.com/android/google-cloud-messaging-gcm-for-android-and-push-notifications/ http://javapapers.com/android/google-cloud-messaging-gcm-for-android-and-push-notifications/
然而，行为很奇怪，例如
如果我杀死应用程序，那么当我发送通知时，它不会立即显示在通知栏上，而是仅在用户再次打开应用程序时显示，也就是说，如果我在杀死应用程序时发送两个通知，我只会收到两个通知当我打开应用程序时。
这是GCM的行为吗？正如我所期望的，它应该类似于whatsapp（即使我没有打开应用程序，设备仍然应该收到通知并显示）
这是我的代码。感谢您的帮助
Gcm广播接收器
public class GcmBroadcastReceiver extends WakefulBroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
ComponentName comp = new ComponentName(context.getPackageName(),
GCMNotificationIntentService.class.getName());
startWakefulService(context, (intent.setComponent(comp)));
setResultCode(Activity.RESULT_OK);
}
}
GCMNotificationIntentService
public class GCMNotificationIntentService extends IntentService {
public static final int NOTIFICATION_ID = 1;
private NotificationManager mNotificationManager;
NotificationCompat.Builder builder;
public GCMNotificationIntentService() {
super("GcmIntentService");
}
public static final String TAG = "GCMNotificationIntentService";
@Override
protected void onHandleIntent(Intent intent) {
Bundle extras = intent.getExtras();
GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
String messageType = gcm.getMessageType(intent);
if (!extras.isEmpty()) {
if (GoogleCloudMessaging.MESSAGE_TYPE_SEND_ERROR.equals(messageType)) {
sendNotification("Send error: " + extras.toString());
} else if (GoogleCloudMessaging.MESSAGE_TYPE_DELETED.equals(messageType)) {
sendNotification("Deleted messages on server: " + extras.toString());
} else if (GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE.equals(messageType)) {
for (int i = 0; i < 3; i++) {
Log.i(TAG, "Working... " + (i + 1) + "/5 @ " + SystemClock.elapsedRealtime());
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
}
}
Log.i(TAG, "Completed work @ " + SystemClock.elapsedRealtime());
sendNotification(getResources().getString(R.string.gcm_news_remind));
Log.i(TAG, "Received: " + extras.toString());
}
}
GcmBroadcastReceiver.completeWakefulIntent(intent);
}
private void sendNotification(String msg) {
Log.d(TAG, "Preparing to send notification...: " + msg);
mNotificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, SplashScreen.class), 0);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
this).setSmallIcon(R.drawable.ic_launcher)
.setContentTitle(getResources().getString(R.string.app_name))
.setStyle(new NotificationCompat.BigTextStyle().bigText(msg))
.setContentText(msg);
mBuilder.setContentIntent(contentIntent);
mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());
Log.d(TAG, "Notification sent successfully.");
}
}
Manifest
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.oshpedia"
android:versionCode="1"
android:versionName="1.0" >
<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.example.oshpedia.permission.C2D_MESSAGE" />
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.VIBRATE" />
<permission
android:name="com.example.oshpedia.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-sdk
android:minSdkVersion="9"
android:targetSdkVersion="19" />
<application
android:name=".Defination.MyApp"
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:largeHeap="true"
android:theme="@style/AppTheme" >
<activity
android:name=".Activity.SplashScreen"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".Activity.Main"
android:screenOrientation="portrait"
android:windowSoftInputMode="stateHidden|adjustPan" >
</activity>
<activity
android:name=".Activity.AboutUs"
android:screenOrientation="portrait" >
</activity>
<activity
android:name=".Activity.AboutApp"
android:screenOrientation="portrait" >
</activity>
<activity
android:name=".Activity.Disclaimer"
android:screenOrientation="portrait" >
</activity>
<activity
android:name=".Activity.EnquiryForm"
android:screenOrientation="portrait"
android:windowSoftInputMode="stateHidden|adjustPan" >
</activity>
<activity
android:name=".Activity.NewsDetail"
android:screenOrientation="portrait" >
</activity>
<activity
android:name=".Activity.EnquiryDetail"
android:screenOrientation="portrait" >
</activity>
<activity
android:name=".Activity.SearchResult"
android:screenOrientation="portrait" >
</activity>
<activity
android:name=".Activity.LawDetail"
android:screenOrientation="portrait" >
</activity>
<activity
android:name=".Activity.AdvanceSearch"
android:screenOrientation="portrait" >
</activity>
<activity
android:name=".Activity.VideoChannel"
android:screenOrientation="portrait" >
</activity>
<activity android:name=".Activity.VideoViewer" >
</activity>
<receiver
android:name=".GCM.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.example.oshpedia" />
</intent-filter>
</receiver>
<service android:name=".GCM.GCMNotificationIntentService" />
</application>
</manifest>
