Ich bekomme diesen Fehler in meinem Logcat und weiß nicht warum. Ich habe auch keine Fehler im Code. Jede Hilfe wird sehr geschätzt.Meine Anwendung in Android stürzt weiter
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.admin.trainyourmath, PID: 26931
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.admin.trainyourmath/com.example.admin.trainyourmath.MainActivity}: java.lang.ClassCastException: com.example.admin.trainyourmath.MainActivity cannot be cast to android.view.View$OnClickListener
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2434)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2494)
at android.app.ActivityThread.access$900(ActivityThread.java:157)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1356)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5551)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:730)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)
Caused by: java.lang.ClassCastException: com.example.admin.trainyourmath.MainActivity cannot be cast to android.view.View$OnClickListener
at com.example.admin.trainyourmath.MainActivity.onCreate(MainActivity.java:31)
at android.app.Activity.performCreate(Activity.java:6272)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2494)
at android.app.ActivityThread.access$900(ActivityThread.java:157)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1356)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5551)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:730)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)
Put Show Code hier, –
Willkommen. Bitte lesen Sie die Ausnahme ... 'verursacht durch: java.lang.ClassCastException: com.example.admin.trainyourmath.MainActivity kann nicht in android.view.View $ OnClickListener' umgewandelt werden. Dies geschieht hier 'com.beispiel.admin.trainyourmath.MainActivity.onCreate (MainActivity.java:31)'. Sie müssen also nur 'com.example.admin.trainyourmath.onCreate()' anzeigen – AxelH
Zeigen Sie Ihren Hauptaktivitätscode hier – CopsOnRoad