This book details the basic knowledge of Android multimedia development technology. The whole book with novel contents, comprehensive knowledge and detailed interpretations is divided into 17 chapters. The first chapter interprets the basic knowledge of Android system; the second chapter interprets the preparation before Android development; the third chapter interprets the basic knowledge of underlying; the fourth chapter interprets the basic knowledge of multimedia framework; the fifth chapter interprets the basic knowledge of audio system framework; the sixth chapter interprets the basic knowledge of video system framework; the seventh chapter interprets the basic knowledge of Camera system; the eighth chapter interprets the basic knowledge of vibrator system and alarm system; the ninth chapter interprets the basic knowledge of flat world.