【android】AudioManager音量控制
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//音量控制,初始化定义
AudioManager mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
//最大音量
int
maxVolume = mAudioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
//当前音量
int
currentVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
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直接控制音量的多少:
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if
(isSilent){
mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC,
0
,
0
);
}
else
{
mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, tempVolume,
0
);
//tempVolume:音量绝对值
}
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以一步步长控制音量的增减,并弹出系统默认音量控制条:
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//降低音量,调出系统音量控制
if
(flag ==
0
){
mAudioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC,AudioManager.ADJUST_LOWER,
AudioManager.FX_FOCUS_NAVIGATION_UP);
}
//增加音量,调出系统音量控制
else
if
(flag ==
1
){
mAudioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC,AudioManager.ADJUST_RAISE,
AudioManager.FX_FOCUS_NAVIGATION_UP);
}
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