Difference between revisions of "AVFlashlight"

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// Make sure you don't have any others AVFlashlight object instantiated
 
// Make sure you don't have any others AVFlashlight object instantiated
 
flashlight = [[AVFlashlight alloc] init];
 
flashlight = [[AVFlashlight alloc] init];
[flashlight setFlashlightLevel:AVCaptureMaxAvailableTorchLevel withError:nil];
+
if ([flashlight hasFlashlight])
 +
  [flashlight setFlashlightLevel:AVCaptureMaxAvailableTorchLevel withError:nil];
  
 
...
 
...

Revision as of 11:58, 13 March 2014

AVFlashlight is a private class introduced in iOS 7 for turning the device's LED flash on or off. The example application that uses this class is Control Center in SpringBoard.

Methods

Signature +(BOOL)hasFlashlight;
Available in 7.0 —

The method +[AVFlashlight hasFlashlight] indicates the LED flash availability.

Signature -(BOOL)setFlashlightLevel:(float)level withError:(NSError *)error;
Available in 7.0 —

The method -[AVFlashlight setFlashlightLevel:withError:] is used for setting the flashlight level.

Example usage

AVFlashlight *flashlight;

...

// Make sure you don't have any others AVFlashlight object instantiated
flashlight = [[AVFlashlight alloc] init];
if ([flashlight hasFlashlight])
   [flashlight setFlashlightLevel:AVCaptureMaxAvailableTorchLevel withError:nil];

...

// Do this when you want to turn power/light off the LED flash
[flashlight release];