ios - 如何在自定义相机上使用 UISlider 调整亮度？
<p><p>iOS 8 Camara 功能可在点击 camara 时调整亮度。 </p>
<p> <a href="/image/D5ItG.jpg" rel="noreferrer noopener nofollow"><img src="/image/D5ItG.jpg" alt="enter image description here"/></a> </p>
<p>我也尝试过此代码，但无法正常工作。 </p>
<pre><code>AVCaptureDevice *device =;
AVCaptureWhiteBalanceGains deviceWhiteBalance;// = ;
AVCaptureWhiteBalanceTemperatureAndTintValues tempAndTint = ];
tempAndTint.temperature = (slider.value*100)*10000/100;
if (slider.value < 0.50) {
tempAndTint.tint = -(slider.value*100)*150/100;
}
else{
tempAndTint.tint = (slider.value*100)*150/100;
}
deviceWhiteBalance = ;
;
dispatch_async(dispatch_get_main_queue(), ^{
AVCaptureDevice *device =;
if (device) {
[device setWhiteBalanceModeLockedWithDeviceWhiteBalanceGains:deviceWhiteBalance completionHandler:^(CMTime syncTime) {
}];
}
});
</code></pre></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>我找到了解决方案。并获取支持 ios 8.0 版以下的所有新更改</p>
<p> <a href="https://developer.apple.com/library/ios/samplecode/AVCamManual/Introduction/Intro.html" rel="noreferrer noopener nofollow">AVCamMenual - ios 8 Camera features</a> </p>
<p> <a href="/image/gykWW.jpg" rel="noreferrer noopener nofollow"><img src="/image/gykWW.jpg" alt="enter image description here"/></a> </p></p>
<p style="font-size: 20px;">关于ios - 如何在自定义相机上使用 UISlider 调整亮度？，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/33102033/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/33102033/
</a>
</p>
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