Flash在zBar相机 [英] Flash in zBar Camera

问题描述

我正在使用ZBAR进行Qr码扫描。我已经正确实现了ZBar。现在我想在Zbar中打开或关闭闪光灯。

在ZBar网站上，我只能得到有关火炬的信息，但没有关于闪光灯的信息。 $ b

解决方案

闪光灯是灯光闪烁一瞬间。 火炬是当灯光保持亮着的时候。你需要火炬，而不是闪光。如果光线只闪烁一秒钟，就很难扫描条形码。

我已经完成了您所寻找的任务。我在导航栏中添加了一个 UIBarButtonItem 。我创建了一个自定义图像的按钮。按钮处理程序如下：

   - （void）torchToggle：（UIBarButtonItem *）button {
 if（button .style == UIBarButtonItemStyleBordered）{
 self.readerView.torchMode = AVCaptureTorchModeOff; 
 if（self.readerView.torchMode == AVCaptureTorchModeOff）{
 button.style = UIBarButtonItemStyleDone; 
} 
} else {
 self.readerView.torchMode = AVCaptureTorchModeOn; 
 if（self.readerView.torchMode！= AVCaptureTorchModeOff）{
 button.style = UIBarButtonItemStyleBordered; 
} 
} 
} 
  

I am using ZBAR for Qr code scanning. I had implemented ZBar correctly. Now I want to make flash light on or off in Zbar.

On ZBar website I only get information about Torch but no information about flash light.

解决方案

The "flash" is when the light "flashes" for a split second. The "torch" is when the light stays on. You do want "torch", not "flash". It would be hard to scan a barcode if the light only flashed for a split second.

I've done what you are look for. I added a UIBarButtonItem to the navbar. I created the button with a custom image. The button handler is as follows:

- (void)torchToggle:(UIBarButtonItem *)button {
    if (button.style == UIBarButtonItemStyleBordered) {
        self.readerView.torchMode = AVCaptureTorchModeOff;
        if (self.readerView.torchMode == AVCaptureTorchModeOff) {
            button.style = UIBarButtonItemStyleDone;
        }
    } else {
        self.readerView.torchMode = AVCaptureTorchModeOn;
        if (self.readerView.torchMode != AVCaptureTorchModeOff) {
            button.style = UIBarButtonItemStyleBordered;
        }
    }
}

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