java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.Object android.widget.Adapter.getItem(int)' on a null object reference at x4.d1.G(Unknown Source:167) at x4.d1.S(Unknown Source:18) at x4.d1.onClick(Unknown Source:0) at android.view.View.performClick(View.java:7265) at android.view.View.performClickInternal(View.java:7221) at android.view.View.access$3800(View.java:836) at android.view.View$PerformClick.run(View.java:27942) at android.os.Handler.handleCallback(Handler.java:883) at android.os.Handler.dispatchMessage(Handler.java:100) at android.os.Looper.loop(Looper.java:237) at android.app.ActivityThread.main(ActivityThread.java:7817) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1027)