小编Avi*_*jit的帖子

当我在Android studio中使用USB在真实设备中测试时,我的应用程序工作正常.但是当我将apk发送到另一台设备并安装在那里时,它无法正常工作.App得到崩溃.我没有找到任何正确的方法来解决问题.错误如下:

FATAL EXCEPTION: main Process: com.w3xplorers.cmch,PID: 17715                                                                           java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.w3xplorers.cmch/com.w3xplorers.cmch.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.w3xplorers.cmch.MainActivity" on path: DexPathList[[zip file "/data/app/com.w3xplorers.cmch-1/base.apk"],nativeLibraryDirectories=[/data/app/com.w3xplorers.cmch-1/lib/arm, /system/lib, /vendor/lib, system/vendor/lib, system/vendor/lib/egl, system/lib/hw]]
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2395)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2544)
    at android.app.ActivityThread.access$900(ActivityThread.java:150)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1394)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:168)
    at android.app.ActivityThread.main(ActivityThread.java:5845)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:797)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:687)
    Caused by: java.lang.ClassNotFoundException: Didn't find class "com.w3xplorers.cmch.MainActivity" on path: DexPathList[[zip file "/data/app/com.w3xplorers.cmch-1/base.apk"],nativeLibraryDirectories=[/data/app/com.w3xplorers.cmch-1/lib/arm, /system/lib, /vendor/lib, system/vendor/lib, system/vendor/lib/egl, system/lib/hw]]
    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:1085)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2385)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2544) …

我正在开发一个Firebase android项目。当我尝试从android studio运行该应用程序时，显示错误。

Error:Execution failed for task ':app:transformDexArchiveWithDexMergerForDebug'.
> com.android.build.api.transform.TransformException: java.io.IOException: EOCD signature not found in the last 22 bytes of the file.

其实，我不知道这是什么问题，为什么会出现？有谁可以帮助我吗？

这是一个简单的颤振项目。Android 版本正在运行，没有任何错误。

但问题出在ios版本中。这是错误的屏幕截图。

我已经删除了 podfile 并重新安装。但是没有运气！！