Android 4.1 (Jelly Bean) introduced limited support for bidirectional text in TextView and EditText elements, allowing apps to display and edit text in both left-to-right (LTR) and right-to-left (RTL) scripts. Android 4.2 added full native support for RTL layouts, including layout mirroring, allowing you to deliver the same great app experience to all of your users, whether their language uses a script that reads right-to-left or one that reads left-to-right.
If you do nothing, your app will not change — it will continue to appear as it currently does. However, with a few simple changes, your app will be automatically mirrored when the user switches the system language to a right-to-left script (such as Arabic, Hebrew, or Persian). For example, see the following screenshots of the Settings app:
To take advantage of RTL layout mirroring, simply make the following changes to your app:
For more precise control over your app UI in both LTR and RTL mode, Android 4.2 includes the following new APIs to help manage View components:
• android:layoutDirection — attribute for setting the direction of a component’s layout.
• android:textDirection — attribute for setting the direction of a component’s text.
• android:textAlignment — attribute for setting the alignment of a component’s text.
• getLayoutDirectionFromLocale() — method for getting the Locale-specified direction
You can even create custom versions of layout, drawables, and other resources for display when a right-to-left script is in use. Simply use the resource qualifier “ldrtl” to tag your resources, meaning “layout direction right-to-left”. To debug and optimize custom right-to-left layouts, HierarchyViewer now lets you see start/end properties, layout direction, text direction, and text alignment for all the Views in the hierarchy.
Over the years we have developed several Arabic Apps, Android and iPhone components, code modules and RTL Frameworks that can work as plug and play solutions for developing new apps.
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Contact us to discuss your Arabic mobile application development project.
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