如何创建带有白色背景，带有三角形箭头的灰色边框的布局-Android

Question

How would I replicate this in Android, my general instinct would be to create a regular layout w/ a border, then have 2 layouts that contain a triangle (one the same color as the border + one that's slightly smaller but white and overlap the two), idk if there's an easier way to do that:

Answer 1

You can use 9patch to achieve something like you wanted.

The Draw 9-patch tool is a WYSIWYG editor that allows you to create bitmap images that automatically resize to accommodate the contents of the view and the size of the screen. Selected parts of the image are scaled horizontally or vertically based indicators drawn within the image.

A complete guideline can be found here : http://developer.android.com/tools/help/draw9patch.html

Answer 2

The easiest way to reach this, is to set the layout background to that image.

background="@drawable/template"

Probably you want to have the area out of the "bubble" transparent, so you will need to save it as PNG.