January 2014
Intermediate to advanced
736 pages
70h 43m
English
Content preview from Android™ How to Program, Second Edition
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7.2.3. Drawing with Canvas and Bitmap
This app draws lines onto Bitmaps (package android.graphics). You can associate a Canvas with a Bitmap, then use the Canvas to draw on the Bitmap, which can then be displayed on the screen (Section 7.6). A Bitmap can also be saved into a file—we’ll use this capability to store drawings in the device’s gallery when you touch the Save option.
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