(→Example usage: It should be there.) |
(Fix code) |
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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]; | if ([AVFlashlight hasFlashlight]) { | ||
flashlight = [[AVFlashlight alloc] init]; | |||
[flashlight setFlashlightLevel:AVCaptureMaxAvailableTorchLevel withError:nil]; | [flashlight setFlashlightLevel:AVCaptureMaxAvailableTorchLevel withError:nil]; | ||
} | |||
... | ... |
Revision as of 00:43, 20 June 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; |
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Available in | 7.0 — |
The method +[AVFlashlight hasFlashlight] indicates the LED flash availability.
Signature | -(BOOL)setFlashlightLevel:(float)level withError:(NSError *)error; |
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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
if ([AVFlashlight hasFlashlight]) {
flashlight = [[AVFlashlight alloc] init];
[flashlight setFlashlightLevel:AVCaptureMaxAvailableTorchLevel withError:nil];
}
...
// Do this when you want to turn power/light off the LED flash
[flashlight release];
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