摘要：
#import <AudioToolbox/AudioToolbox.h> 1 -(void) becomeFirstResponse{ 2 [[AVAudioSession sharedInstance] setDelegate: self]; 3 [[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error: nil]; 4 UInt32 doSetProperty = 0; 5 AudioSessionSetProperty ( 6 ... 阅读全文
