(→Example usage: It should be there.) |
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}} | }} | ||
The method {{ObjcCall|AVFlashlight|hasFlashlight|ClassMethod=1}} indicates the LED flash availability. | The method {{ObjcCall|AVFlashlight|hasFlashlight|ClassMethod=1}} indicates the LED flash availability. It is equivalent to <code>MGGetBoolAnswer(CFSTR("camera-flash"))</code> | ||
{{function signature | {{function signature | ||
|signature=-(BOOL)setFlashlightLevel:( | |signature=-(BOOL)setFlashlightLevel:(CGFloat)level withError:(NSError *)error; | ||
|firmware=7.0 — | |firmware=7.0 — | ||
}} | }} | ||
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<source lang=objc> | <source lang=objc> | ||
AVFlashlight *flashlight; | static AVFlashlight *flashlight; | ||
... | ... | ||
// Make sure you don't have any | // Make sure you don't have any other AVFlashlight object instantiated, or this flashlight won't be functional. | ||
flashlight | if ([AVFlashlight hasFlashlight]) { | ||
if ([ | flashlight = [AVFlashlight new]; | ||
[flashlight setFlashlightLevel:1.0 withError:nil]; | |||
} | |||
... | ... | ||
// Do this when you want to turn power/light off the LED flash | // Do this when you want to turn power/light off the LED flash | ||
[flashlight | [flashlight turnPowerOff]; | ||
</source> | </source> | ||
{{occlass|library=AVFoundation.framework|navbox=1}} | {{occlass|library=AVFoundation.framework|navbox=1}} | ||
Latest revision as of 06:00, 4 August 2017
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. It is equivalent to MGGetBoolAnswer(CFSTR("camera-flash"))
| Signature | -(BOOL)setFlashlightLevel:(CGFloat)level withError:(NSError *)error; |
|---|---|
| Available in | 7.0 — |
The method -[AVFlashlight setFlashlightLevel:withError:] is used for setting the flashlight level.
Example usage
static AVFlashlight *flashlight;
...
// Make sure you don't have any other AVFlashlight object instantiated, or this flashlight won't be functional.
if ([AVFlashlight hasFlashlight]) {
flashlight = [AVFlashlight new];
[flashlight setFlashlightLevel:1.0 withError:nil];
}
...
// Do this when you want to turn power/light off the LED flash
[flashlight turnPowerOff];
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