In this tutorial, we will see about how to design an Android layout for chat application using Chat Bubbles and the main part is chat via Bluetooth . Main objective of this post is to give an idea about how to allow two-way text chat over Bluetooth in android. Bubbles: Chat bubbles are background image that expands horizontally and vertically as required based on the message posted. Bubbles are Nine-patch Images. Image Nine-patch Image In creating Android chat bubbles, nine-patch image plays a crucial role. Nine-patch image is a bitmap which stretches to fit the content posted in the View where it is applied as a background. A NinePatch drawable is a standard PNG image that includes an extra 1-pixel-wide border. It must be saved with the extension .9.png , and saved into the res/drawable/ directory of your project. The border is used to define the stretchable and static areas of the image. You indicate a stretchable section by drawing one (or more) 1-pixel-w
Learn with Samples