java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.String.toLowerCase()' on a null object reference at jrizani.jrspinner.a.k(Unknown Source:22) at jrizani.jrspinner.b$b.onTextChanged(Unknown Source:10) at android.widget.TextView.sendOnTextChanged(TextView.java:13047) at android.widget.TextView.handleTextChanged(TextView.java:13162) at android.widget.TextView$ChangeWatcher.onTextChanged(TextView.java:16831) at android.text.SpannableStringBuilder.sendTextChanged(SpannableStringBuilder.java:1269) at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:578) at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:509) at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:39) at android.view.inputmethod.BaseInputConnection.replaceTextInternal(BaseInputConnection.java:1032) at android.view.inputmethod.BaseInputConnection.replaceText(BaseInputConnection.java:965) at android.view.inputmethod.BaseInputConnection.commitText(BaseInputConnection.java:244) at com.android.internal.inputmethod.EditableInputConnection.commitText(EditableInputConnection.java:222) at android.view.inputmethod.RemoteInputConnectionImpl.lambda$commitText$16(RemoteInputConnectionImpl.java:647) at android.view.inputmethod.RemoteInputConnectionImpl.$r8$lambda$DuD803urSTti1OmMx2Hq0yX1sSU(Unknown Source:0) at android.view.inputmethod.RemoteInputConnectionImpl$$ExternalSyntheticLambda15.run(Unknown Source:8) at android.os.Handler.handleCallback(Handler.java:1013) at android.os.Handler.dispatchMessage(Handler.java:101) at android.os.Looper.loopOnce(Looper.java:226) at android.os.Looper.loop(Looper.java:328) at android.app.ActivityThread.main(ActivityThread.java:9188) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:594) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)