// 导入framework：AVFoundation.framework

// 导入头文件
#import "SYFlashLight.h"

// 使用，开灯或关灯
[[SYFlashLight shareFlash] openFlashLight:^(BOOL hasFlash, BOOL isOpen) {
    if (hasFlash) {
        if (isOpen) {
            [[[UIAlertView alloc] initWithTitle:@"温馨提示" message:@"已经打开闪光灯" delegate:nil cancelButtonTitle:nil otherButtonTitles:@"知道了", nil] show];
        } else {
            [[[UIAlertView alloc] initWithTitle:@"温馨提示" message:@"已经关闭闪光灯" delegate:nil cancelButtonTitle:nil otherButtonTitles:@"知道了", nil] show];
        }
    } else {
        [[[UIAlertView alloc] initWithTitle:@"温馨提示" message:@"没有闪光灯功能" delegate:nil cancelButtonTitle:nil otherButtonTitles:@"知道了", nil] show];
    }
}];