Close app when hitting back button on android

问题

So my login Activity is the first screen you see. When you hit the back button, it exits the app, good. So I open up the app again. After logging in, I am now in my main Activity. How do I make it so when I hit the back button now, it exits the app rather than going back to the login Activity?

回答1:

When you push the new activity, call finish() on the previous, otherwise it will remain on the stack, therefore appearing when you hit back and pop the current activity.

Hope that helps.

回答2:

try this one @Override public void onBackPressed() {

super.onBackPressed(); finish();

}

来源：https://stackoverflow.com/questions/5902464/close-app-when-hitting-back-button-on-android