我尝试设置我的应用以接收推送通知。但问题是，虽然它们是从服务器成功发送的，但它们并没有到达设备。
这是我的代码：
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<!-- Keeps the processor from sleeping when a message is received. -->
<uses-permission android:name="android.permission.WAKE_LOCK" />
<permission android:name="com.jampez.smalltalk.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-permission android:name="com.jampez.smalltalk.permission.C2D_MESSAGE" />
<!-- This app has permission to register and receive data message. -->
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<!-- Network State Permissions to detect Internet status -->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<activity
android:name=".MainActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
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="com.google.android.gcm.GCMBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND" >
<intent-filter>
<!-- Receives the actual messages. -->
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<!-- Receives the registration id. -->
<action android:name="com.google.android.c2dm.intent.REGISTRATION" />
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
<category android:name="com.jampez.smalltalk" />
</intent-filter>
</receiver>
这是主要包中的其他活动
public class GCMIntentService extends GCMBaseIntentService {
private static final String TAG = "GCMIntentService";
public GCMIntentService() {
super(SENDER_ID);
}
/**
* Method called on device registered
**/
@Override
protected void onRegistered(Context context, String registrationId) {
Log.i(TAG, "Device registered: regId = " + registrationId);
displayMessage(context, "Your device registred with GCM");
ServerUtilities.register(context, registrationId);
}
/**
* Method called on device un registred
* */
@Override
protected void onUnregistered(Context context, String registrationId) {
Log.i(TAG, "Device unregistered");
displayMessage(context, getString(R.string.gcm_unregistered));
ServerUtilities.unregister(context, registrationId);
}
/**
* Method called on Receiving a new message
* */
@Override
protected void onMessage(Context context, Intent intent) {
Log.i(TAG, "Received message");
String message = intent.getExtras().getString("message");
displayMessage(context, message);
// notifies user
generateNotification(context, null, message, (long) 01);
}
/**
* Method called on receiving a deleted message
* */
@Override
protected void onDeletedMessages(Context context, int total) {
Log.i(TAG, "Received deleted messages notification");
String message = getString(R.string.gcm_deleted, total);
displayMessage(context, message);
// notifies user
generateNotification(context, null, message, (long) 00);
}
/**
* Method called on Error
* */
@Override
public void onError(Context context, String errorId) {
Log.i(TAG, "Received error: " + errorId);
displayMessage(context, getString(R.string.gcm_error, errorId));
}
@Override
protected boolean onRecoverableError(Context context, String errorId) {
// log message
Log.i(TAG, "Received recoverable error: " + errorId);
displayMessage(context, getString(R.string.gcm_recoverable_error,
errorId));
return super.onRecoverableError(context, errorId);
}
/**
* Issues a notification to inform the user that server has sent a message.
*/
private static void generateNotification(Context context, String title, String message, Long extra) {
int icon = R.drawable.ic_launcher;
Integer i = (int) (long) extra;
if(title == null){
title = context.getString(R.string.app_name);
}
Intent notificationIntent = new Intent(context, MainActivity.class);
PendingIntent Int = PendingIntent.getActivity(context, i, notificationIntent, 0);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context)
.setSmallIcon(icon)
.setContentTitle(title)
.setContentIntent(Int)
.setContentText(message)
.setAutoCancel(true)
.setDefaults(Notification.DEFAULT_SOUND | Notification.DEFAULT_VIBRATE | Notification.DEFAULT_LIGHTS);
NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.notify(i, mBuilder.build());
}
}
public static final String DISPLAY_MESSAGE_ACTION = "com.jampez.smalltalk.DISPLAY_MESSAGE";
public static final String TAG = "GCM";
static final String EXTRA_MESSAGE = "message";
/**
* Notifies UI to display a message.
* <p>
* This method is defined in the common helper because it's used both by
* the UI and the background service.
*
* @param context application's context.
* @param message message to be displayed.
*/
public static void displayMessage(Context context, String message) {
Intent intent = new Intent(DISPLAY_MESSAGE_ACTION);
intent.putExtra(EXTRA_MESSAGE, message);
context.sendBroadcast(intent);
}
public final class ServerUtilities {
private static final int MAX_ATTEMPTS = 5;
/**
* Register this account/device pair within the server.
*
*/
public static void register(final Context context, final String regId) {
Log.i(TAG, "registering device (regId = " + regId + ")");
// Once GCM returns a registration id, we need to register on our server
// As the server might be down, we will retry it a couple
// times.
for (int i = 1; i <= MAX_ATTEMPTS;) {
Log.d(TAG, "Attempt #" + i + " to register");
displayMessage(context, context.getString(R.string.server_registering, i, MAX_ATTEMPTS));
GCMRegistrar.setRegisteredOnServer(context, true);
String message = context.getString(R.string.server_registered);
AppConfig.displayMessage(context, message);
return;
}
String message = context.getString(R.string.server_register_error,
MAX_ATTEMPTS);
AppConfig.displayMessage(context, message);
}
/**
* Unregister this account/device pair within the server.
*/
public static void unregister(final Context context, final String regId) {
Log.i(TAG, "unregistering device (regId = " + regId + ")");
Map<String, String> params = new HashMap<String, String>();
params.put("regId", regId);
//post(serverUrl, params);
GCMRegistrar.setRegisteredOnServer(context, false);
String message = context.getString(R.string.server_unregistered);
AppConfig.displayMessage(context, message);
}
}
答案 0 :(得分：0)
我不知道这是否是主要原因，但您错过了许可。由于GCM需要Google帐户，因此您也应声明以下权限：
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
另外，也声明service：
<service android:name=".GCMIntentService" />
编辑：
如果您的错误仍然存在，请尝试以下操作：
转到项目/属性/ Java构建路径/订单和导出 - 如果您使用它，请确保在Android Dependencies和支持库前面进行检查。标记所有复选框。单击“应用”并清除项目。
答案 1 :(得分：0)