back button's function on first activity

Normally when the back button is clicked it goes to the previous activity and if the current activity is the first activity, the application closes.

I have a splash screen (that is logically my first activity) and then the menu activity loads.

I want to close the program when the back button is pressed on my menu activity (as if it is the first activity) and avoid going back to the splash screen again, but I know that I should not exit the program.

I was wondering what is the functionality of back button on the first activity?
does it put the program to pause?

using Handler

4 Answers
4

Avoid splash screens !

Instead of using your splash as the main activity, use menu activity as the main one, and in onCreate() chain off the splash activity, which will close and disappear forever.

onCreate()

When new Activity is launched from first Activity, first Activity is executed until onStop() method, then it stops and waits for relaunch, unless you killed it by calling .finish(), in that case launched Activity becomes first Activity and back button will minimize application on back button press. In order to control what application does on back button press you can override this method in your Activities and implement your own custom behaviour:

@Override
public void onBackPressed() {
super.onBackPressed()
}


While you are on the SplashScreen, on the method calling your menu activity I assume you are doing something like startActivity (new Intent (this, MenuActivity.class)); in Java or startActivity(Intent(this, MenuActivity::class.java)) for Kotlin just after that call finish() this will remove your SplashScreen from the back stack

startActivity (new Intent (this, MenuActivity.class));

Java

startActivity(Intent(this, MenuActivity::class.java))

Kotlin

finish()

add this attribute to your splash activity (in manifest):

android:excludeFromRecents="true"

android:excludeFromRecents="true"

pressing back in per activity, transfer control to prev activity in stack (back stack) that not excluded from "Recents".

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