How to fix this error?

08-25 04:03:34.080 2276-2276/? I/art: Not late-enabling -Xcheck:jni (already on) 08-25 04:03:35.144 2276-2276/? D/AndroidRuntime: Shutting down VM --------- beginning of crash 08-25 04:03:35.145 2276-2276/? E/AndroidRuntime: FATAL EXCEPTION: main Process: com.android.tencent.zdevs.bah, PID: 2276 java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.android.tencent.zdevs.bah/com.android.tencent.zdevs.bah.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.android.tencent.zdevs.bah.MainActivity" on path: DexPathList[[zip file "/data/app/com.android.tencent.zdevs.bah-2/base.apk"],nativeLibraryDirectories=[/vendor/lib64, /system/lib64]] at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2236) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) at android.app.ActivityThread.access$800(ActivityThread.java:151) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5254) 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:903) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) Caused by: java.lang.ClassNotFoundException: Didn't find class "com.android.tencent.zdevs.bah.MainActivity" on path: DexPathList[[zip file "/data/app/com.android.tencent.zdevs.bah-2/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.Instrumentation.newActivity(Instrumentation.java:1066) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2226) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) at android.app.ActivityThread.access$800(ActivityThread.java:151) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5254) 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:903) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) Suppressed: java.lang.ClassNotFoundException: com.android.tencent.zdevs.bah.MainActivity 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) ... 13 more Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available

Manifest

 <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.android.tencent.zdevs.bah"> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> <application android:allowBackup="true" android:icon="@drawable/first_icon" android:label="@string/app_name" android:persistent="true" android:theme="@style/Theme.AppCompat.Light.NoActionBar"> <activity android:name=".MainActivity" android:windowSoftInputMode="adjustPan"> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> </intent-filter> </activity> <activity-alias android:name=".QQ1279525738" android:enabled="false" android:icon="@drawable/second_icon" android:label="@string/second_activity_name" android:targetActivity=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> </intent-filter> </activity-alias> </application> </manifest>
  • Can I throw a manfest here? It looks as if the property android: name of the MainActivity itself or something else related to it is incorrectly spelled in it. - Gleb Kuznetsov

1 answer 1

Initially "Clean" and "Sync Project with Gradle Files". Then run the code. You can also try this: File -> Settings -> Build, Execution, Deployment -> Instant Run