How to change the startup activity in android [closed]

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Closed 8 years ago.

For the first time use of the application I will show the user with a login screen which i will defined in manifest file as "android.intent.action.MAIN". After a successful login, each time application starts I want the user to see the home screen. Please let me know how i can achieve this.

Also please let me know is there any way I can change the MAIN activity programmatically after a successful login, So that I can redirect to the home screen.

Thanks,

Vijay

Answer 1

What if you subclass Application class and call the activity you need from your Application's onCreate() ? And in the manifest you remove that intent.MAIN.

Answer 2

I don't think you can set the main activity programmatically, but you can set a boolean in your sharedPreferences. If this boolean is true, then you call your HomeActivity, and finish your LoginActivity.

Hope this helps

Answer 3

I would, from the login screen simply call the home screen. Or from the home screen, if the login details are not saved/ valid, then show the login screen.

Basically, it is not necessary or a good programming practice to do what you are asking.

Answer 4

When you have successfully logged in, call finish(); in the main activity which will remove it from the stack. Then in your HomeScreenActivity, override the back button to act as the home button:

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        moveTaskToBack(true);
        return true;
    }
    return super.onKeyDown(keyCode, event);
}