我想了解GCM是如何工作的。爲此,我複製/粘貼http://developer.android.com/在「實施GCM客戶端」部分中提出的代碼。android-classnotfoundexception - 神祕
從服務器的工作原理髮送消息,但是當我的客戶端應用程序接收到該消息,它崩潰,告訴我有個:
E/AndroidRuntime(5722): java.lang.RuntimeException: Unable to instantiate receiver
com.test.testnotification3.GcmBroadcastReceiver: java.lang.ClassNotFoundException: Didn't
find class "com.test.testnotification3.GcmBroadcastReceiver" on path:
/data/app/com.test.testnotification3-2.apk
我搜索互聯網上類似的問題,很多人似乎由於其清單中存在問題(清單中包名錯誤)而導致此錯誤。但是,我檢查了我的表現,它似乎是確定:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.test.testnotification3"
android:versionCode="1"
android:versionName="1.0" >
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="com.test.testnotification3.permission.C2D_MESSAGE" />
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<receiver
android:name="com.test.testnotification3.GcmBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND" >
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<category android:name="com.test.testnotification3" />
</intent-filter>
</receiver>
<service android:name="com.test.testnotification3.GcmIntentService" />
<activity
android:name="com.test.testnotification3.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>
</application>
如果您有任何想法... 非常感謝!
編輯: 這裏是我的GcmBroadcastReceiver:
package core;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.support.v4.content.WakefulBroadcastReceiver;
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);
}
}
當然,由於數據包名稱變了,我改爲 「com.test.testnotification3」 由 「芯」 的接收器。
我們可以看到com.test.testnotification3.GcmBroadcastReceiver的源代碼嗎? –
我沒有在您的清單中看到'com.test.testnotification3.permission.C2D_MESSAGE'權限的定義。你忘了將它包含在你的問題中,還是真的從清單中錯過了? – Eran