手机视频切换出去为什么自动变微信怎么切换听筒模式式

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如果此时手机靠近面部放在耳朵旁,那么声音将通过听筒输出,并将屏幕变暗(省电啊)
//处理***触发事件
-(void)sensorStateChange:(NSNotificationCenter *)
//如果此时手机靠近面部放在耳朵旁,那么声音将通过听筒输出,并将屏幕变暗(省电啊)
if ([[UIDevice currentDevice] proximityState] == YES)
[[***AudioSession sharedInstance] setCategory:***AudioSessionCategoryPlayAndRecord error:nil];
[[***AudioSession sharedInstance] setCategory:***AudioSessionCategoryPlayback error:nil];
- (void)viewWillAppear:(BOOL)animated
[super viewWillAppear:animated];
/*======================***语音=================================*/
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(sensorStateChange:)name:@&UIDeviceProximityStateDidChangeNotification&
object:nil];
-(void)viewDidDisappear:(BOOL)animated
[[NSNotificationCenter defaultCenter]removeObserver:self];
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