Question

I am new android developer. I want to ask a question. Here is what I need: When the user click Back Button it counts as double click?


@Override
public void onBackPressed() {
--> what to write here?
return;
}
}


Answer 1

You need to check an interval between to presses and determine whether you it can be counted as a double click or not:

private static final long DOUBLE_PRESS_INTERVAL = /* some value in ns. */;
private long lastPressTime;

@Override
public void onBackPressed() {
    long pressTime = System.nanoTime();
    if(pressTime - lastPressTime <= DOUBLE_PRESS_INTERVAL) {
        // this is a double click event
    }
    lastPressTime = pressTime;
}