Как включить/выключить флэш-память вспышки iPhone iPhone?
Как включить/выключить флэш-память iPhone?
Ответ 1
#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];
}
} }
Ответ 2
Я объединил таймер с указанным выше кодом .it работал у меня...
- (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];
}
} }
Ответ 3
вам понадобится пара инструкций void (doSOmethingfoo и showAcitivtyfoo) и NSTimer (mytimer) в вашем .h файле вместе с некоторым кодом
-(void)doSmethingfoo { myTimer = [NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(showActivityfoo) userInfo:nil repeats:YES]; }