IPhone iOS 4.3相机焦点方块 - 可编程删除？ [英] IPhone iOS 4.3 camera focus square - removeable programatically?

问题描述

由于我的朋友将他的iPhone iOS更新为4.3，所以每次用相机拍摄照片时都会出现一个小方块。
我们正在开发一个应用程序，使用相机，并想要删除这个恼人的广场。我没有找到任何关于它的苹果的UIImagePickerController文档。
正方形在以前的iOS版本中不存在...

Since my friend updated his iPhone iOS to 4.3 there's a small square which appears every time he takes a picture with the camera. We're developing an app that uses the camera and would like to remove this annoying square. I didn't find anything about it in apple's UIImagePickerController documentation. The square didn't exist in former iOS versions...

推荐答案

您可能想尝试锁定焦点以禁用自动对焦。下面是一个示例代码：

You may want to try to lock the focus to disable auto-focus. Here is a sample code:

    NSArray *devices = [AVCaptureDevice devices];
    NSError *error;
    for (AVCaptureDevice *device in devices) {
        if (([device hasMediaType:AVMediaTypeVideo]) && 
            ([device position] == AVCaptureDevicePositionBack) ) {
            [device lockForConfiguration:&error];
             if ([device isFocusModeSupported:AVCaptureFocusModeLocked]) {
             device.focusMode = AVCaptureFocusModeLocked;
             NSLog(@"Focus locked");
             }

            [device unlockForConfiguration];
        }
    }

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