只要应用程序启动或从服务器发送推送通知，就会发生以下追溯。
08-31 02:00:14.733: E/AndroidRuntime(30973): java.lang.RuntimeException: Unable to instantiate receiver com.example.smsmining.GcmBroadcastReceiver: java.lang.ClassNotFoundException: Didn't find class "com.example.smsmining.GcmBroadcastReceiver" on path: DexPathList[[zip file "/data/app/com.example.smsmining-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.smsmining-1, /vendor/lib, /system/lib]]
08-31 02:00:14.733: E/AndroidRuntime(30973): at android.app.ActivityThread.handleReceiver(ActivityThread.java:2405)
08-31 02:00:14.733: E/AndroidRuntime(30973): at android.app.ActivityThread.access$1500(ActivityThread.java:141)
08-31 02:00:14.733: E/AndroidRuntime(30973): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1332)
08-31 02:00:14.733: E/AndroidRuntime(30973): at android.os.Handler.dispatchMessage(Handler.java:99)
08-31 02:00:14.733: E/AndroidRuntime(30973): at android.os.Looper.loop(Looper.java:137)
08-31 02:00:14.733: E/AndroidRuntime(30973): at android.app.ActivityThread.main(ActivityThread.java:5103)
08-31 02:00:14.733: E/AndroidRuntime(30973): at java.lang.reflect.Method.invokeNative(Native Method)
08-31 02:00:14.733: E/AndroidRuntime(30973): at java.lang.reflect.Method.invoke(Method.java:525)
08-31 02:00:14.733: E/AndroidRuntime(30973): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
08-31 02:00:14.733: E/AndroidRuntime(30973): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
08-31 02:00:14.733: E/AndroidRuntime(30973): at dalvik.system.NativeStart.main(Native Method)
08-31 02:00:14.733: E/AndroidRuntime(30973): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.smsmining.GcmBroadcastReceiver" on path: DexPathList[[zip file "/data/app/com.example.smsmining-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.smsmining-1, /vendor/lib, /system/lib]]
08-31 02:00:14.733: E/AndroidRuntime(30973): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53)
08-31 02:00:14.733: E/AndroidRuntime(30973): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
08-31 02:00:14.733: E/AndroidRuntime(30973): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
08-31 02:00:14.733: E/AndroidRuntime(30973): at android.app.ActivityThread.handleReceiver(ActivityThread.java:2400)
08-31 02:00:14.733: E/AndroidRuntime(30973): ... 10 more
我的清单文件：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.smsmining"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="9"
android:targetSdkVersion="16" />
<uses-permission android:name="android.permission.READ_SMS"/>
<uses-permission android:name="android.permission.RECEIVE_SMS"/>
<uses-permission android:name="android.permission.READ_CONTACTS"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<permission android:name="com.example.smsmining.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.smsmining.permission.C2D_MESSAGE" />
<!-- This app has permission to register and receive data message. -->
<uses-permission
android:name="com.google.android.c2dm.permission.RECEIVE" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".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>
<receiver android:name="com.example.smsmining.SMSBroadcastReceiver">
<intent-filter>
<action android:name="android.provider.Telephony.SMS_RECEIVED"/>
</intent-filter>
</receiver>
<receiver
android:name=".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.smsmining" />
</intent-filter>
</receiver>
<service android:name=".GCMIntentService" />
</application>
</manifest>
GcmBroadcastReceiver.java
package com.example.smsmining;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.support.v4.content.WakefulBroadcastReceiver;
/**
* This {@code WakefulBroadcastReceiver} takes care of creating and managing a
* partial wake lock for your app. It passes off the work of processing the GCM
* message to an {@code IntentService}, while ensuring that the device does not
* go back to sleep in the transition. The {@code IntentService} calls
* {@code GcmBroadcastReceiver.completeWakefulIntent()} when it is ready to
* release the wake lock.
*/
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);
}
}
GcmIntentService.java
public class GcmIntentService extends IntentService {
public static final int NOTIFICATION_ID = 1;
private NotificationManager mNotificationManager;
NotificationCompat.Builder builder;
public GcmIntentService() {
super("GcmIntentService");
}
public static final String TAG = "GCM Demo";
@Override
protected void onHandleIntent(Intent intent) {
Bundle extras = intent.getExtras();
GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
// The getMessageType() intent parameter must be the intent you received
// in your BroadcastReceiver.
String messageType = gcm.getMessageType(intent);
if (!extras.isEmpty()) { // has effect of unparcelling Bundle
/*
* Filter messages based on message type. Since it is likely that GCM will be
* extended in the future with new message types, just ignore any message types you're
* not interested in, or that you don't recognize.
*/
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());
// If it's a regular GCM message, do some work.
} else if (GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE.equals(messageType)) {
// This loop represents the service doing some work.
for (int i = 0; i < 5; i++) {
Log.i(TAG, "Working... " + (i + 1)
+ "/5 @ " + SystemClock.elapsedRealtime());
try {
Thread.sleep(5);
} catch (InterruptedException e) {
}
}
Log.i(TAG, "Completed work @ " + SystemClock.elapsedRealtime());
// Post notification of received message.
sendNotification("Received: " + extras.toString());
Log.i(TAG, "Received: " + extras.toString());
}
}
// Release the wake lock provided by the WakefulBroadcastReceiver.
GcmBroadcastReceiver.completeWakefulIntent(intent);
}
// Put the message into a notification and post it.
// This is just one simple example of what you might choose to do with
// a GCM message.
private void sendNotification(String msg) {
mNotificationManager = (NotificationManager)
this.getSystemService(Context.NOTIFICATION_SERVICE);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
new Intent(this, MainActivity.class), 0);
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_launcher)
.setContentTitle("GCM Notification")
.setStyle(new NotificationCompat.BigTextStyle()
.bigText(msg))
.setContentText(msg);
mBuilder.setContentIntent(contentIntent);
mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());
}
}
答案 0 :(得分：7)
我有同样的错误。这对我有帮助。 尝试检查v.4库。 属性 - ＆gt; Java构建路径 - ＆gt;订单和导出
编辑： 选择项目并转到：Properties-＆gt; Java Build Path-＆gt; Order and Export，确保在列表中选中了android.support.v4库，如果没有，请标记它。 （我假设您已经将库导入到项目中），清理项目并且它应该可以工作
答案 1 :(得分：2)
更改
.GcmBroadcastReceiver
到
com.example.smsmining.GcmBroadcastReceiver
和
.GCMIntentService
到
com.example.smsmining.GCMIntentService
之后，清理项目。 这对我有用。