导入#import<AVFoundation/AVFoundation.h>
@interface MobileViewControllers (){
BOOL LightOn;
AVCaptureDevice *device;
}
@implementation MobileViewControllers
- (void)viewDidLoad {
[super viewDidLoad];
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn setFrame:CGRectMake(100, 150, 100, 80)];
btn.backgroundColor = [UIColor redColor];
[btn addTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn];
[self initUIIIUI];
}
-(void)initUIIIUI{
device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
if (![device hasTorch]) {
//无手电筒
}
LightOn = NO;
}
-(void)btnClicked
{
LightOn = !LightOn;
if (LightOn) {
[self turnOn];
}else{
[self turnOff];
}
}
-(void) turnOn
{
[device lockForConfiguration:nil];
[device setTorchMode:AVCaptureTorchModeOn];
[device unlockForConfiguration];
}
-(void) turnOff
{
[device lockForConfiguration:nil];
[device setTorchMode: AVCaptureTorchModeOff];
[device unlockForConfiguration];
}
