我正在进行FCM整合，但获得了java.lang.ClassNotFoundException: Didn't find class "service.MyFirebaseMessagingService" on path: DexPathList[[zip file "/data/app/com.rk.servicepractise-2/base.apk"],nativeLibraryDirectories=[/vendor/lib64, /system/lib64]]
我已搜索过但未找到合适的解决方案，请检查下面的代码，让我知道我在哪里做错了？
请使用classes检查我的manifest和gradle文件，请帮我解决此问题。
我的第一个课程是MyFirebaseInstanceIDService，它扩展了 FirebaseInstanceIdService 类
public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {
private static final String TAG = "MyFirebaseIIDService";
@Override
public void onTokenRefresh() {
//Getting registration token
String refreshedToken = FirebaseInstanceId.getInstance().getToken();
//Displaying token on logcat
Log.d(TAG, "Refreshed token: " + refreshedToken);
}
private void sendRegistrationToServer(String token) {
//You can implement this method to store the token on your server
//Not required for current project
}
}
另外还有一个Fcm课程，其中FirebaseMessagingService课程如下： -
public class MyFirebaseMessagingService extends FirebaseMessagingService {
private static final String TAG = "MyFirebaseMsgService";
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
//Displaying data in log
//It is optional
Log.d(TAG, "From: " + remoteMessage.getFrom());
Log.d(TAG, "Notification Message Body: " + remoteMessage.getNotification().getBody());
//Calling method to generate notification
sendNotification(remoteMessage.getNotification().getBody());
}
//This method is only generating push notification
//It is same as we did in earlier posts
private void sendNotification(String messageBody) {
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent,
PendingIntent.FLAG_ONE_SHOT);
Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("Firebase Push Notification")
.setContentText(messageBody)
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0, notificationBuilder.build());
}
}
以下是此Fcm
<application>
.
.
.
.
<service
android:name="com.rk.servicepractise.service.MyFirebaseMessagingService">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT"/>
</intent-filter>
</service>
<service
android:name="com.rk.servicepractise.service.MyFirebaseInstanceIDService">
<intent-filter>
<action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
</intent-filter>
</service>
</application>
我正在使用的gradle如下模块：app ： -
apply plugin: 'com.android.application'
android {
.
.
.
.
.
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:design:23.1.1'
compile 'com.google.firebase:firebase-messaging:9.8.0'
}
apply plugin: 'com.google.gms.google-services'
build.gradle 对抗Project:ProjectName
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.5.0'
classpath 'com.google.gms:google-services:3.0.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
以下是我得到的例外： -
java.lang.RuntimeException: Unable to instantiate service service.MyFirebaseInstanceIDService: java.lang.ClassNotFoundException: Didn't find class "service.MyFirebaseInstanceIDService" on path: DexPathList[[zip file "/data/app/com.rk.servicepractise-1/base.apk"],nativeLibraryDirectories=[/vendor/lib64, /system/lib64]]
at android.app.ActivityThread.handleCreateService(ActivityThread.java:2779)
at android.app.ActivityThread.access$1900(ActivityThread.java:154)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1404)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
Caused by: java.lang.ClassNotFoundException: Didn't find class "service.MyFirebaseInstanceIDService" on path: DexPathList[[zip file "/data/app/com.rk.servicepractise-1/base.apk"],nativeLibraryDirectories=[/vendor/lib64, /system/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at android.app.ActivityThread.handleCreateService(ActivityThread.java:2776)
at android.app.ActivityThread.access$1900(ActivityThread.java:154)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1404)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
Suppressed: java.lang.ClassNotFoundException: service.MyFirebaseInstanceIDService
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
已编辑如果您遇到同样的问题，请按照此链接感谢 @Marcin Orlowski ... 链接： - {{3 }}
答案 0 :(得分：29)
只需在Service文件中的Mainfest之前添加点（。）即可。
换句话说，以下是诀窍：
<service android:name=".service.MyFirebaseMessagingService">
答案 1 :(得分：1)
就我而言，我不得不更换
<service android:name="MyFirebaseMessagingService" android:exported="false">
与
<service android:name="com.google.firebase.messaging.FirebaseMessagingService">
答案 2 :(得分：1)
我遇到了同样的错误，并通过执行 Clean 然后 Rebuild 来修复它。我认为该文件在重新索引项目之前没有被正确引用。
答案 3 :(得分：0)
为了它的价值，我已经通过将我的FirebaseMessagingService侦听器类移动到根包文件夹中来解决了这个问题。我使用的是android：name =＆＃34; .fcm.FCMListenerService＆＃34;，每当设备收到noti时，它就像上面所描述的那样一直崩溃。将它移动到它开始工作的根包文件夹，即android：name =＆＃34; .FCMListenerService＆＃34;。
更新：我将服务移回fcm文件夹并继续工作，所以这不是答案。然而，它确实做了一些事情来将事情付诸实践，所以它可能值得一试（我正在解决这个问题几个小时）。