objective c - prende - ¿Cómo encender y apagar la cámara del iPhone?

iphone no enciende y no carga

Question

¿Cómo puedo activar / desactivar el flash LED de la cámara del iPhone programáticamente?

Answer 1

Combiné el temporizador con el código anterior. Me funcionó ...

 - (void)viewDidLoad
{
[super viewDidLoad];
myTimer = [NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(toggleFlashlight) userInfo:nil repeats:YES];
// Do any additional setup after loading the view from its nib.
}
- (void) toggleFlashlight
{
// check if flashlight available
Class captureDeviceClass = NSClassFromString(@"AVCaptureDevice");
if (captureDeviceClass != nil) {
AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
if ([device hasTorch] && [device hasFlash]){
[device lockForConfiguration:nil];
if (device.torchMode == AVCaptureTorchModeOff)
{
[device setTorchMode:AVCaptureTorchModeOn];
[device setFlashMode:AVCaptureFlashModeOn];
//torchIsOn = YES;
}
else
{
[device setTorchMode:AVCaptureTorchModeOff];
[device setFlashMode:AVCaptureFlashModeOff];
// torchIsOn = NO;
}
[device unlockForConfiguration];
}
} }

Answer 2

va a necesitar un par de declaraciones vacías (doSOmethingfoo y showAcitivtyfoo) y un NSTimer (mytimer) en su archivo .h, junto con algún código

 -(void)doSmethingfoo { myTimer = [NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(showActivityfoo) userInfo:nil repeats:YES]; }

Answer 3

#import <AVFoundation/AVFoundation.h>

...

- (void) turnTorchOn: (bool) on {
// check if flashlight available
Class captureDeviceClass = NSClassFromString(@"AVCaptureDevice");
if (captureDeviceClass != nil) {
AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
if ([device hasTorch] && [device hasFlash]){
[device lockForConfiguration:nil];
if (on) {
[device setTorchMode:AVCaptureTorchModeOn];
[device setFlashMode:AVCaptureFlashModeOn];
//torchIsOn = YES; //define as a variable/property if you need to know status
} else {
[device setTorchMode:AVCaptureTorchModeOff];
[device setFlashMode:AVCaptureFlashModeOff];
//torchIsOn = NO;
}
[device unlockForConfiguration];
}
} }