java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference

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via Stack Overflow by BraveHeart
, 1 year ago
Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
via Stack Overflow by Rifat
, 11 months ago
Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
via com.tr by Unknown author, 1 year ago
Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
via Stack Overflow by LeNomade
, 1 year ago
Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
via Stack Overflow by sandesh
, 1 year ago
Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
via Stack Overflow by Yasir Amin
, 9 months ago
Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
at android.support.v7.app.AppCompatDelegateImplBase.(AppCompatDelegateImplBase.java:68)
at android.support.v7.app.AppCompatDelegateImplV7.(AppCompatDelegateImplV7.java:145)
at android.support.v7.app.AppCompatDelegateImplV11.(AppCompatDelegateImplV11.java:28)
at android.support.v7.app.AppCompatDelegateImplV14.(AppCompatDelegateImplV14.java:41)
at android.support.v7.app.AppCompatDelegateImplV23.(AppCompatDelegateImplV23.java:29)
at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:186)
at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:170)
at android.support.v7.app.AppCompatActivity.getDelegate(AppCompatActivity.java:502)
at wifiexplorer.braveheart.com.classtest.MainActivity.function(MainActivity.java:20)
at wifiexplorer.braveheart.com.classtest.SecondActivity$1.onClick(SecondActivity.java:22)
at android.view.View.performClick(View.java:5277)
at android.view.View$PerformClick.run(View.java:21711)
at android.os.Handler.handleCallback(Handler.java:815)
at android.os.Handler.dispatchMessage(Handler.java:104)
at android.os.Looper.loop(Looper.java:207)
at android.app.ActivityThread.main(ActivityThread.java:5896)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)

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