java 杀死当前活动，清除堆栈，完成-----链接：http：//stackoverflow.com/questions/8631095/android-preventing-going-back-

Posted 2021-05-08

// Kill current activity when press back button
@Override
public void onBackPressed() {
    finish();
}

// Close current activity after load the one called.
Intent intent = new Intent(CharacterActivity.this, nextActivity.getClass());
startActivity(intent);
// Kill the current activity
finish();

// After Android 16 / Jellybean
// This command kill all activities 
finishAffinity();