iOS播放音效、振动以及打开闪光灯

iOS中有一些小的功能, 有的可以提高一下用户体验, 有的是一些使用功能.

播放音效

• 1、导入框架:import <AVFoundation/AVFoundation.h>
• 2、获取SoundID, 并播放

  - (void)palySoundName:(NSString *)name {
      NSString *audioFile = [[NSBundle mainBundle] pathForResource:name ofType:nil];
      NSURL *fileUrl = [NSURL fileURLWithPath:audioFile];
      
      SystemSoundID soundID = 0;
      AudioServicesCreateSystemSoundID((__bridge CFURLRef)(fileUrl), &soundID);
      //设置回调函数
      AudioServicesAddSystemSoundCompletion(soundID, NULL, NULL, soundCompleteCallback, NULL);
      AudioServicesPlaySystemSound(soundID); // 播放音效
      AudioServicesDisposeSystemSoundID(soundID);//释放
  }
  void soundCompleteCallback(SystemSoundID soundID, void *clientData){
  
  }

振动

• 1、导入框架:AudioToolbox.framework
• 2、播放系统声音

  AudioServicesPlaySystemSound(kSystemSoundID_Vibrate); 

闪光灯

需要导入#import <AVFoundation/AVFoundation.h>

/** 打开手电筒 */
+ (void)openFlashlight {
    AVCaptureDevice *captureDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
    NSError *error = nil;
    if ([captureDevice hasTorch]) {
        BOOL locked = [captureDevice lockForConfiguration:&error];
        if (locked) {
            captureDevice.torchMode = AVCaptureTorchModeOn;
            [captureDevice unlockForConfiguration];
        }
    }
}
/** 关闭手电筒 */
+ (void)closeFlashlight {
    AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
    if ([device hasTorch]) {
        [device lockForConfiguration:nil];
        [device setTorchMode: AVCaptureTorchModeOff];
        [device unlockForConfiguration];
    }
}