Question

我有一个从故事板创建的具有216x20像素的ZBarReaderView，显示为大约230x50像素，因为ZBarReaderView不会使它的尺寸太严重... 这一切都运行得很好，但是当我在那个readerView上调用start时它表现得很奇怪。它启动凸轮，但是在半秒之后，readerView会稍微缩放，而readerView内的摄像头图像会向下移动，然后再向上移动。这并不可怕，但看起来有点糟糕。任何人都有任何想法可能导致这个以及如何解决它？也许sdk对于扫描仪的准备情况有一些隐藏的回调，我可以隐藏它直到扫描仪说它准备就绪然后显示扫描仪就像.5秒后......

barcodeReader是ZBarReaderView的iboutlet，scanLoading是uiactivityindicatorview的iboutlet，它会在加载扫描仪之前进行动画处理。这些是默认情况下更改的唯一设置，当然除了在故事板中设置的框架外。

[barcodeReader setReaderDelegate:self];
[barcodeReader setAllowsPinchZoom:false];
[barcodeReader start];

/* this works because [barcodeReader start] blocks ui updates until the scanner
   is running, i know it's not a good solution but since there doesn't seem to 
   be a callback or delegate method like scannerDidStart or something it seems 
   to be the only way... */
[scannerLoading stopAnimating];

感谢您的帮助！

Answer 1

我刚刚发布了一个报复问题的答案：

ZBarReadview with custom size from StoryBoard,but when it's called,it's size is not I set

也许答案也解决了你的问题。

简而言之：

使用Interface Builder或Storyboard创建视图并为其分配ZBarReaderView时，您必须在相机图像的属性中选中“剪辑子视图”以保持视图的大小。

Answer 2

只需添加另一个视图，使其成为具有图像视图的cameraoverlayview，图像视图中所需的部分为透明。然后在按钮操作中

// ADD：提供从相机提要中扫描的条形码阅读器

 ZBarReaderViewController *reader = [ZBarReaderViewController new];
reader.readerDelegate = self;

reader.supportedOrientationsMask = ZBarOrientationMaskAll;

reader.sourceType=UIImagePickerControllerSourceTypeCamera;
//reader.cameraDevice = UIImagePickerControllerCameraDeviceFront;

reader.cameraOverlayView=cameraOverlay;

if( [UIImagePickerController isCameraDeviceAvailable:                         UIImagePickerControllerCameraDeviceFront ])
{
       reader.cameraDevice = UIImagePickerControllerCameraDeviceFront;
}
ZBarImageScanner *scanner = reader.scanner;

reader.wantsFullScreenLayout = YES;
// TODO: (optional) additional reader configuration here

// EXAMPLE: disable rarely used I2/5 to improve performance

[scanner setSymbology: ZBAR_I25
               config: ZBAR_CFG_ENABLE
                   to: 0];
 reader.showsZBarControls = NO; 
// present and release the controller

[self presentModalViewController：reader animated：YES]; // [appdel.navigationController pushViewController：reader animated：YES];

//[reader.view addSubview:collect];


[reader release];add this and then also add

` - （void）imagePickerController：（UIImagePickerController *）阅读器 didFinishPickingMediaWithInfo：（NSDictionary *）info { // ADD：获取解码结果 id results = [info objectForKey：ZBarReaderControllerResults]; ZBarSymbol * symbol = nil; for（结果中的符号） //示例：抓住第一个条形码打破;

 [self rewards:symbol.data];

} `

作为一种方法.hope这将解决您的问题

调用启动后故事板中自定义大小的ZBarReaderView

2 个答案: