這是我第一次使用 kotlin，出于某種原因，我必須在 MainActivity 中使用 kotlin 語言。我通過Code -> Convert Java file to Kotlin file 將 MainActivity 類更改為 kotlin 文件 但是當我運行代碼時，我會收到以下錯誤：java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{ir.mohammadhf.sevenautoshow/ir.mohammadhf.sevenautoshow.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "ir.mohammadhf.sevenautoshow.MainActivity" on path: DexPathList[[zip file "/data/app/ir.mohammadhf.sevenautoshow-b4uU0l0_OCV9z_7YwD1uHg==/base.apk"],nativeLibraryDirectories=[/data/app/ir.mohammadhf.sevenautoshow-b4uU0l0_OCV9z_7YwD1uHg==/lib/x86, /data/app/ir.mohammadhf.sevenautoshow-b4uU0l0_OCV9z_7YwD1uHg==/base.apk!/lib/x86, /system/lib, /system/vendor/lib]]        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2718)        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)        at android.app.ActivityThread.-wrap11(Unknown Source:0)        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)        at android.os.Handler.dispatchMessage(Handler.java:105)        at android.os.Looper.loop(Looper.java:164)        at android.app.ActivityThread.main(ActivityThread.java:6541)        at java.lang.reflect.Method.invoke(Native Method)        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)     Caused by: java.lang.ClassNotFoundException: Didn't find class "ir.mohammadhf.sevenautoshow.MainActivity" on path: DexPathList[[zip file "/data/app/ir.mohammadhf.sevenautoshow-b4uU0l0_OCV9z_7YwD1uHg==/base.apk"]我搜索了類似的問題，但在大多數問題中，他們建議“在 Android 清單中聲明活動”。但它已經為我做好了。我有什么事情要做嗎？