Question

当我打开模拟器时，我的应用程序会继续停止。我尝试放入其他应用程序；只有第一个屏幕和课程，它仍然停止。

它显示以下跟踪：

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.dearpet, PID: 31496
    java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.dearpet/com.example.dearpet.MainActivity}: java.lang.InstantiationException: java.lang.Class<com.example.dearpet.MainActivity> cannot be instantiated
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2839)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3030)
        at android.app.ActivityThread.-wrap11(Unknown Source:0)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1696)
        at android.os.Handler.dispatchMessage(Handler.java:105)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6938)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
     Caused by: java.lang.InstantiationException: java.lang.Class<com.example.dearpet.MainActivity> cannot be instantiated
        at java.lang.Class.newInstance(Native Method)
        at android.app.Instrumentation.newActivity(Instrumentation.java:1180)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2829)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3030) 
        at android.app.ActivityThread.-wrap11(Unknown Source:0) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1696) 
        at android.os.Handler.dispatchMessage(Handler.java:105) 
        at android.os.Looper.loop(Looper.java:164) 
        at android.app.ActivityThread.main(ActivityThread.java:6938) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374) 
Application terminated.

Answer 1

尝试不使用任何代码启动您的应用，并每次仅添加一行，直到错误再次出现

הייים，תנסילהפילאתהאפליקציהקקקק（p pפעם

我的应用程序不断停止；为什么我不能运行我的应用程序？

1 个答案: