我正在开发 C2DM 消息传递应用程序。为此，我使用 C2DMBroadcastReceiver、C2DMBaseReceiver 和 C2DMMessaging 类接收注册 ID。我将在扩展 C2DMBaseReceiver 的包中使用 C2DMReceiver。

这是我的代码 fragment

C2DMMessaging.java

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");
    }
}

C2DMBroadcastReceiver.java

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 */);        
    }

}

list 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>

C2DMMessaging.java

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 Activity 中调用 C2DMMessaging 的 Register，该服务是在 C2DMMessaging 中创建的，之后我在 C2DMBroadcastReceiver 的 onReceive().

这是我从 vogille.de 得到的代码.如果我这样使用它，它工作正常，但是当我在我的应用程序中使用它时，这个问题就来了。

最佳答案

出于一个不明确的原因，您的接收器类 C2DMReceiver 必须位于您的包的根目录中，它在您的 list 中声明为您的包名称。 这是我设法让它工作的唯一方法......所以而不是:

service android:name="com.sample.gt.c2dm.C2DMReceiver" 

尝试

service android:name=".C2DMReceiver"

这是我的 list 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>

关于android - C2DMBroadcastReceiver 的 onReceive 未执行(用于注册)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/6705904/