Android游戏之音频类设计(安卓音游吃音)

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Android游戏之音频类设计

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1、基础知识：

A. setVolumeControlStream(AudioManager.STREAM_MUSIC); final void setVolumeControlStream (int streamType) Added in API level 1

Suggests an audio stream whose volume should be changed by the hardware volume controls. The suggested audio stream will be tied to the window of this Activity. Volume requests which are received while the Activity is in the

foreground will affect this stream. It is not guaranteed that the hardware volume controls will always change this stream's volume (for example, if a call is in progress, its

stream's volume may be changed instead). To reset back to the default, use USE_DEFAULT_STREAM_TYPE.

Parameters

streamType The type of the audio stream whose volume should be changed by the hardware volume controls.

AudioManager的值： STREAM_MUSIC The audio stream for music playback

B.getAssets () final AssetManager getAssets () Added in API level 1

Retrieve underlying AssetManager storage for these resources. C. SoundPool class manages and plays audio resources for applications. A SoundPool is a collection of samples that can be loaded into memory from a resource inside the APK or from a file in the file system. The

SoundPool library uses the MediaPlayer service to decode the audio into a raw -bit PCM mono or stereo stream. This allows applications to

ship with compressed streams without having to suffer the CPU load and latency of decompressing during playback. int, int)Parameters

maxStreams the maximum number of simultaneous streams for this SoundPool object streamType the audio stream type as described in AudioManager For example, game applications will normally use STREAM_MUSIC. srcQuality the sample-rate converter quality. Currently has no effect. Use 0 for the default.

Returnsa SoundPool object, or null if creation failedF.

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