我正在开发一个c2dm消息应用程序。这样我就可以使用C2DMBroadcastReceiver
、C2DMBaseReceiver
和C2DMMessaging
类接收注册id im。我将在扩展C2DMReceiver
的包中C2DMBaseReceiver
。
这是我的代码片段
c2dmessaging.java语言
package com.google.android.c2dm;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.util.Log;
public class C2DMessaging {
public static final String EXTRA_SENDER = "sender";
public static final String EXTRA_APPLICATION_PENDING_INTENT = "app";
public static final String REQUEST_UNREGISTRATION_INTENT = "com.google.android.c2dm.intent.UNREGISTER";
public static final String REQUEST_REGISTRATION_INTENT = "com.google.android.c2dm.intent.REGISTER";
public static final String LAST_REGISTRATION_CHANGE = "last_registration_change";
public static final String BACKOFF = "backoff";
public static final String GSF_PACKAGE = "com.google.android.gsf";
// package
static final String PREFERENCE = "com.google.android.c2dm";
private static final long DEFAULT_BACKOFF = 30000;
/**
* Initiate c2d messaging registration for the current application
*/
public static void register(Context context,
String senderId) {
Intent registrationIntent = new Intent(REQUEST_REGISTRATION_INTENT);
registrationIntent.setPackage(GSF_PACKAGE);
registrationIntent.putExtra(EXTRA_APPLICATION_PENDING_INTENT,
PendingIntent.getBroadcast(context, 0, new Intent(), 0));
registrationIntent.putExtra(EXTRA_SENDER, senderId);
context.startService(registrationIntent);
Log.e("C2DM Services","Service Started");
}
/**
* Unregister the application. New messages will be blocked by server.
*/
public static void unregister(Context context) {
Intent regIntent = new Intent(REQUEST_UNREGISTRATION_INTENT);
regIntent.setPackage(GSF_PACKAGE);
regIntent.putExtra(EXTRA_APPLICATION_PENDING_INTENT, PendingIntent.getBroadcast(context,
0, new Intent(), 0));
context.startService(regIntent);
Log.e("C2DM Services","unregister");
}
/**
* Return the current registration id.
*
* If result is empty, the registration has failed.
*
* @return registration id, or empty string if the registration is not complete.
*/
public static String getRegistrationId(Context context) {
final SharedPreferences prefs = context.getSharedPreferences(
PREFERENCE,
Context.MODE_PRIVATE);
String registrationId = prefs.getString("dm_registration", "");
Log.e("C2DM Services","get registration id");
return registrationId;
}
public static long getLastRegistrationChange(Context context) {
final SharedPreferences prefs = context.getSharedPreferences(
PREFERENCE,
Context.MODE_PRIVATE);
Log.e("C2DM Services","getlastregchange");
return prefs.getLong(LAST_REGISTRATION_CHANGE, 0);
}
static long getBackoff(Context context) {
final SharedPreferences prefs = context.getSharedPreferences(
PREFERENCE,
Context.MODE_PRIVATE);
Log.e("C2DM Services","getbackoff");
return prefs.getLong(BACKOFF, DEFAULT_BACKOFF);
}
static void setBackoff(Context context, long backoff) {
final SharedPreferences prefs = context.getSharedPreferences(
PREFERENCE,
Context.MODE_PRIVATE);
Editor editor = prefs.edit();
editor.putLong(BACKOFF, backoff);
editor.commit();
Log.e("C2DM Services","setbackoff");
}
// package
static void clearRegistrationId(Context context) {
final SharedPreferences prefs = context.getSharedPreferences(
PREFERENCE,
Context.MODE_PRIVATE);
Editor editor = prefs.edit();
editor.putString("dm_registration", "");
editor.putLong(LAST_REGISTRATION_CHANGE, System.currentTimeMillis());
editor.commit();
Log.e("C2DM Services","clearregid");
}
// package
static void setRegistrationId(Context context, String registrationId) {
final SharedPreferences prefs = context.getSharedPreferences(
PREFERENCE,
Context.MODE_PRIVATE);
Editor editor = prefs.edit();
editor.putString("dm_registration", registrationId);
editor.commit();
Log.e("C2DM Services","setregid");
}
}
c2dbroadcastReceiver.java语言
package com.google.android.c2dm;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
public class C2DMBroadcastReceiver extends BroadcastReceiver {
@Override
public final void onReceive(Context context, Intent intent) {
// To keep things in one place.
Log.e("C2DM Broadcast receiver","onReceive");
C2DMBaseReceiver.runIntentInService(context, intent);
setResult(Activity.RESULT_OK, null /* data */, null /* extra */);
}
}
清单文件
<permission android:name="com.sample.gt.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="com.sample.gt.permission.C2D_MESSAGE" />
<!-- Permissions -->
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<service android:name="com.sample.gt.c2dm.C2DMReceiver" />
<!--
Only C2DM servers can send messages for the app. If permission is not
set - any other app can generate it
-->
<receiver android:name="com.google.android.c2dm.C2DMBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND">
<!-- Receive the actual message -->
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<category android:name="com.sample.gt.c2dm" />
</intent-filter>
<!-- Receive the registration id -->
<intent-filter>
<action android:name="com.google.android.c2dm.intent.REGISTRATION" />
<category android:name="com.sample.gt.c2dm" />
</intent-filter>
</receiver>
c2dmessaging.java语言
public class C2DMessaging {
public static final String EXTRA_SENDER = "sender";
public static final String EXTRA_APPLICATION_PENDING_INTENT = "app";
public static final String REQUEST_UNREGISTRATION_INTENT = "com.google.android.c2dm.intent.UNREGISTER";
public static final String REQUEST_REGISTRATION_INTENT = "com.google.android.c2dm.intent.REGISTER";
public static final String LAST_REGISTRATION_CHANGE = "last_registration_change";
public static final String BACKOFF = "backoff";
public static final String GSF_PACKAGE = "com.google.android.gsf";
// package
static final String PREFERENCE = "com.google.android.c2dm";
private static final long DEFAULT_BACKOFF = 30000;
/**
* Initiate c2d messaging registration for the current application
*/
public static void register(Context context,
String senderId) {
Intent registrationIntent = new Intent(REQUEST_REGISTRATION_INTENT);
registrationIntent.setPackage(GSF_PACKAGE);
registrationIntent.putExtra(EXTRA_APPLICATION_PENDING_INTENT,
PendingIntent.getBroadcast(context, 0, new Intent(), 0));
registrationIntent.putExtra(EXTRA_SENDER, senderId);
context.startService(registrationIntent);
Log.e("C2DM Services","Service Started");
}
..........
}
现在我的问题是,
我通过传递上下文从我的活动调用c2dmessaging的寄存器,在c2dmessaging中创建服务,之后im在c2dbroadcastReceiver的onReceive()中没有接收任何内容。
这是我从vogille.de得到的代码。如果我这样使用它,这是很好的,但是当我在我的应用程序中使用这个时,这个问题就来了。
我在某个帖子上搜索了一些东西,发现问题可能在
manifest
文件中。我不知道我错在哪里。有人能帮忙吗?
最佳答案
出于一个不清楚的原因,您的接收方类c2dmceiver必须位于包的根目录中,包在清单中声明为您的包名称。
这是我唯一的办法让这个工作…所以不是:
service android:name="com.sample.gt.c2dm.C2DMReceiver"
尝试
service android:name=".C2DMReceiver"
这是我的清单摘录(权限除外)
<!--C2DM -->
<service android:name=".C2DMReceiver" />
<receiver android:name="com.google.android.c2dm.C2DMBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND">
<!-- Receive the actual message -->
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<category android:name="my.package" />
</intent-filter>
<!-- Receive the registration id -->
<intent-filter>
<action android:name="com.google.android.c2dm.intent.REGISTRATION" />
<category android:name="my.package" />
</intent-filter>
</receiver>