when using AlertDialog.Builder with EditText, the Soft Keyboard doesn't pop

Question

I am using AlertDialog.Builder in order to create an input box, with EditText as the input method.

Unfortunately, the Soft Keyboard doesn\'t pop, al

Answer 1

This problem occurs when EditText is added after AlertDialog.onCreate is called.

https://developer.android.com/reference/androidx/appcompat/app/AlertDialog.Builder

The AlertDialog class takes care of automatically setting android.view.WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM for you based on whether any views in the dialog return true from View.onCheckIsTextEditor().

You need to clear the FLAG_ALT_FOCUSABLE_IM flag.

getWindow().clearFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM); 

Because AlertDialog.show is called in the DialogFragment.onStart, you can insert the code in the DialogFragment.onStart.

@Override
public void onStart() {
    super.onStart();
    getDialog().getWindow().clearFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
}

Or you can use the Dialog.setOnShowListener if you do not use a DialogFragment.

dialog.setOnShowListener(new DialogInterface.OnShowListener() {
    @Override
    public void onShow(DialogInterface dialog) {
        getDialog().getWindow().clearFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
    }
});