java.lang.NullPointerException

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    • java.lang.NullPointerException: Attempt to invoke virtual method 'int android.text.Layout.getLineForOffset(int)' on a null object reference at com.example.tabstrial2.TabFragment1.getCurrentCursorLine(TabFragment1.java:451) at com.example.tabstrial2.TabFragment1$2.onTextChanged(TabFragment1.java:169) at android.widget.TextView.sendOnTextChanged(TextView.java:7689) at android.widget.TextView.setText(TextView.java:4070) at android.widget.TextView.setText(TextView.java:3925) at android.widget.EditText.setText(EditText.java:85) at android.widget.TextView.setText(TextView.java:3900) at android.widget.TextView.onRestoreInstanceState(TextView.java:3800) at android.view.View.dispatchRestoreInstanceState(View.java:13754) at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:2894) at android.view.View.restoreHierarchyState(View.java:13732) at android.support.v4.app.Fragment.restoreViewState(Fragment.java:477) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1135) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1290) at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:801) at android.support.v4.app.FragmentManagerImpl.execSingleAction(FragmentManager.java:1638) at android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:679) at android.support.v4.app.FragmentStatePagerAdapter.finishUpdate(FragmentStatePagerAdapter.java:166) at android.support.v4.view.ViewPager.populate(ViewPager.java:1240) at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:670) at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:632) at android.support.v4.view.ViewPager.setCurrentItem(ViewPager.java:613) at com.example.tabstrial2.MainActivity.onNavigationItemSelected(MainActivity.java:569) at android.support.design.widget.NavigationView$1.onMenuItemSelected(NavigationView.java:153) at android.support.v7.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:810) at android.support.v7.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:152) at android.support.v7.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:957) at android.support.design.internal.NavigationMenuPresenter$1.onClick(NavigationMenuPresenter.java:328) at android.view.View.performClick(View.java:4783) at android.view.View$PerformClick.run(View.java:19887) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5290) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:911) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:706)
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