If view navigation is very important to your app, use tabs (for fastest view-switching) or spinners. When planning your split action bars, ask yourself questions like these: How important is view navigation to the task? You can control the action content of a CAB in order to insert the actions you would like the user to be able to perform.įor more information, refer to the Selection pattern. Use CABs whenever you allow the user to select data via long press. This removes the CAB along with all selection highlights. Dismiss the CAB via the navigation bar's Back button or the CAB's checkmark button.The CAB then automatically dismisses itself. Trigger an action from the CAB that applies to all selected data items.Select additional elements by touching them.The selection CAB appears after a long press on a selectable data item triggers selection mode. Layout Considerations for Split Action BarsĬontextual action bar in Browser and Gmail You can adapt to such changes by using split action bars, which allow you to distribute action bar content across multiple bars located below the main action bar or at the bottom of the screen.
Android buttonbar action how to#
One of the most important UI issues to consider when creating an app is how to adjust to screen rotation on different screen sizes. Move less often used actions to the action overflow.Īdapting to Rotation and Different Screen Sizes
Long-press on an icon to view the action's name. Actions that don't fit in the action bar are moved automatically to the action overflow. Show the most important actions of your app in the actions section.
If your app doesn't support different views, you can also use this space to display non-interactive content, such as an app title or longer branding information. For more information on view-switching, see the App Structure pattern. Examples of view-switching controls are drop-down menus or tab controls. Import 7.app.If your app displays data in different views, this segment of the action bar allows users to switch views. The activity_main.xml is an empty RelativeLayout since our emphasis here is on the ActionBar.
Android buttonbar action android#
Android Custom Action Bar Project Structure The view layout consists of two ImageButtons that represent forward and back image buttons and a TextView in the center. Custom Action Bar Layoutįollowing is the view layout that will be set to the ActionBar from our MainActivity. Note that we will be using AppCompatActivity since it provides maximum compatibility with pre-3.0 Android versions. The contentInsetStart and contentInsetEnd are the padding values. Hence we’ll use the CustomTheme style in this project. Following is the xml layout for that: styles.xml įrom the above snippet if we use AppTheme style for our activity, it will throw a null pointer exception as it explicitly specifies the NoActionBar theme. To customise an ActionBar first we need to configure the Theme in the res/values/styles.xml and set the theme for the respective activity class in the AndroidManifest.xml. We assume that you have a basic understanding of the ActionBar component discussed in this tutorial. In this tutorial we will create an app that consists of Android Custom Action Bar with a custom layout.
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