Android快速应用旋转崩溃

Question

When i am logged in android application, and fast rotating screen, app can't handle onSaveInstanceState and onCreate(loading user and performing login). So i get logged out. Can i somehow handle rotations, and not allowing to call those methods so quick?

Answer 1

When you rotates the device your Activity will re-create and all the variables will be re-initialized. So, in that case if you want to some values to remain same on Rotation also you can store their state using the onSaveInstanceState() and you can restore in onCreate() again by checking Bundle is not null.

if(savedInstanceState != null){
            // get the restore value from the Bundle
        }

Where as onConfigurationChanged() will be called when you rotate the Device(Note that this will only be called if you have selected configurations you would like to handle with the This method is called when screen rotated

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
        //Do stuff here
}