Return back to MainActivity from another activity

Question

The MainActivity contains some buttons. Each button opens a new activity via an intent. These activities then have a button to return to the MainActivity<

Answer 1

Use this code on button click in activity and When return back to another activity just finish previous activity by setting flag in intent then put only one Activity in the Stack and destroy the previous one.

  Intent i=new Intent("this","YourClassName.Class");
  i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
  startActivity(i);

Answer 2

This usually works as well :)

navigateUpTo(new Intent(getBaseContext(), MainActivity.class));

Answer 3

I'm used it and worked perfectly...

startActivity(new Intent(getApplicationContext(),MainActivity.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)); 

because Finish() use for 2 activities, not for multiple activities

Answer 4

instead of starting MainActivity again via startActivity, call finish() instead in the other activities to get back to MainActivity... as MainActivity is already in stack

Answer 5

Here's why you saw the menu with the code you listed in your onClick method:

You were creating an Intent with the constructor that takes a string for the action parameter of the Intent's IntentFilter. You passed "android.intent.action.MAIN" as the argument to that constructor, which specifies that the Intent can be satisfied by any Activity with an IntentFilter including <action="android.intent.action.MAIN">.

When you called startActivity with that Intent, you effectively told the Android OS to go find an Activity (in any app installed on the system) that specifies the android.intent.action.MAIN action. When there are multiple Activities that qualify (and there are in this case since every app will have a main Activity with an IntentFilter including the "android.intent.action.MAIN" action), the OS presents a menu to let the user choose which app to use.

As to the question of how to get back to your main activity, as with most things, it depends on the specifics of your app. While the accepted answer probably worked in your case, I don't think it's the best solution, and it's probably encouraging you to use a non-idiomatic UI in your Android app. If your Button's onClick() method contains only a call to finish() then you should most likely remove the Button from the UI and just let the user push the hardware/software back button, which has the same functionality and is idiomatic for Android. (You'll often see back Buttons used to emulate the behavior of an iOS UINavigationController navigationBar which is discouraged in Android apps).

If your main activity launches a stack of Activities and you want to provide an easy way to get back to the main activity without repeatedly pressing the back button, then you want to call startActivity after setting the flag Intent.FLAG_ACTIVITY_CLEAR_TOP which will close all the Activities in the call stack which are above your main activity and bring your main activity to the top of the call stack. See below (assuming your main activity subclass is called MainActivity:

btnReturn1.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v) {
        Intent i=new Intent(this, MainActivity.class);
        i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        startActivity(i);
    }
)};

Answer 6

why don't you call finish();

when you want to return to MainActivity

   btnReturn1.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v) {
        finish();
    }
});