Action Bar Home Up Alternatives: Android Navigation

The action bar home-up button is on the extreme left of the Action bar. Its functionality is to navigate the app to the parent activity. Two ways can achieve the functionality:

Method 1:  By adding it to the Android Manifest (AndroidManifest.xml) file.

Add the tag in the activity’s <activity> tag of the Android Manifest file. For example, I have two activities, activity1 and activity2 and I want to go to activity1 on click of activity2’s home up button then my Android Manifest file will be like

Method 2: By adding a check in the onOptionsItemSelected() method of the activity.

You can also implement a check on the Home up button ID in the onOptionsItemSelected() method as

Both methods work well but if you want to give the home-up button the functionality of a back press then go for the second method else you can use whatever suits you.

Official Action Bar documentation -> https://developer.android.com/reference/android/app/ActionBar

Hope this blog helps you understand and gain better navigation control and alternatives to the normal back button press in your Android application.

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This is Aaastha, signing off.
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