How to Add and Customize Back Button of Action Bar in Android?
The action bar (sometimes referred to as the app bar), if it exists for an activity, will be at the top of the activity’s content area, typically directly underneath the status bar. It is a menu bar that runs across the top of the activity screen in android. Android ActionBar can contain menu items that become visible when the user clicks the “menu” button. In general, an ActionBar composed of the following four components:
- App Icon: App branding logo or icon will be shown here
- View Control: A dedicated space to display the Application title. Also provides the option to switch between views by adding spinner or tabbed navigation
- Action Buttons: Major actions of the app could be added here
- Action Overflow: All unimportant action will be displayed as a menu
Below is a sample image to show where the Action Bar/Toolbar/App Bar is present on an android device.
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The action bar is a primary toolbar inside an activity that can be used to display an activity title and other interactive items. One of the most used items is a Back Navigation Button. The back button is used to move backward from the previously visited screen by the user. Most Android devices have a dedicated back button still a back button on the action bar enhances the user experience.
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