[SOLVED] My application crashes when I try to call OnClickListener in a dialog box

My application crashes when I try to call OnClickListener in a dialog box

This Error

 private void showDialog(){
        Dialog dialogAI = new Dialog(this, R.style.DialogStyle);

        dialogAI.setContentView(R.layout.custom_dialog_ai);
        dialogAI.getWindow().setBackgroundDrawableResource(R.drawable.bg_cyrcle_window);

        TypeWriterView typeWriterView = findViewById(R.id.typeWriter_openai);
        AppCompatButton appCompatButton = findViewById(R.id.btn_yes);
        

        #### THIS CRASHING MY APP ####
        appCompatButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                typeWriterView.animateText("Привет, чем я могу помочь?");
            }
        });

        dialogAI.show();
    }

Solution

You are missing the crash log. Please post it. However, most likely cause of the crash is that you're calling findViewById on the Activity's view hierarchy, but the views (typeWriter_openai and btn_yes) are actually part of the Dialog's layout, not the Activity's.

You need to call findViewById on the dialog, not on this (the activity):

TypeWriterView typeWriterView = dialogAI.findViewById(R.id.typeWriter_openai);
AppCompatButton appCompatButton = dialogAI.findViewById(R.id.btn_yes);