Question

I have an activity which opens a dialogue box to sign up or log in. What i want is that if i press the back button not only the dialogue box but also the activity should exit. How can i achieve this?

Answer 1

Use setOnCancelListener to call finish() when back-key is pressed on dialog

//for example
new AlertDialog.Builder(this)
.setOnCancelListener(new OnCancelListener() {

    @Override
    public void onCancel(DialogInterface dialog) {
        finish();   //to finish Activity on which dialog is displayed
    }
})
...