Preventing Duplicate Actions from Rapid Taps in Android

A common issue in Android applications: a user taps a button, the response is not instantaneous, and they tap again. Each tap triggers the action, potentially launching duplicate Activities or firing redundant network requests.

Solution

Guard the click handler with a boolean flag:

private boolean isClicked = false;


button.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        if (!isClicked) {
            isClicked = true;
            startActivity(new Intent(this, NextActivity.class));
        }
    }
});

Reset the flag when the Activity resumes, allowing the button to be used again upon return:

@Override
protected void onResume() {
    super.onResume();
    isClicked = false;
}

This is a lightweight pattern that prevents a surprisingly common class of bugs in production applications.