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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];
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