Question

拍摄照片时，我需要看到黑色不透明的底部和顶部条形图。我希望它看起来完全像这样：

这实际上就是我在运行iOS 7的iPhone 5上运行我的代码。但是当我在iPhone 4S（也是iOS 7）上编译我的代码时，底部的条形变得透明 - 视图从顶部变为相机底部，就像现在的相机应用程序。甚至“拍照”按钮也变得透明，就像SnapChat一样。我讨厌这个。我需要改变什么设置才能让我的iPhone 4S上的底栏变得不透明？我正在使用autolayout。

这是在我的viewDidAppear：

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
    {
        self.anImagePickerController = [UIImagePickerController new];
        self.anImagePickerController.delegate = self;
        self.anImagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
        self.anImagePickerController.showsCameraControls = YES;

        [self presentViewController:self.anImagePickerController animated:NO completion:Nil];
    }

Answer 1

我认为你不能修改UIImagePickerController的行为。由于较小屏幕设备上的屏幕空间不足，可能会移除黑条。如果您坚持这种行为，则需要使用自定义叠加方法。您将showsCameraControls设置为NO，并提供cameraOverlayView，其行为符合您的要求。在自定义叠加视图中，当用户点按按钮拍照时，您可以在图像选择器控制器上调用takePicture。

您可以在Apple的示例中看到叠加视图的示例实现： https://developer.apple.com/library/ios/samplecode/PhotoPicker/Introduction/Intro.html#//apple_ref/doc/uid/DTS40010196

Answer 2

下面的代码将完全符合您的要求。我自己发现了这一点，因为我想要做与你完全相同的事情，并且觉得滚动自己的相机控制器是完全没必要的。

UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePicker.allowsEditing = YES;
imagePicker.cameraFlashMode = UIImagePickerControllerCameraFlashModeAuto;
imagePicker.delegate = self;

 [self presentViewController:imagePicker animated:YES completion:^()
 {   
     for (UIView *subview in imagePicker.view.subviews)
     {
        if([NSStringFromClass([subview class]) isEqualToString:@"UINavigationTransitionView"])
        {
            UIView *theView = (UIView *)subview;

            for (UIView *subview in theView.subviews)
            {
               if([NSStringFromClass([subview class]) isEqualToString:@"UIViewControllerWrapperView"])
               {
                   UIView *theView = (UIView *)subview;

                    for (UIView *subview in theView.subviews)
                    {
                         if([NSStringFromClass([subview class]) isEqualToString:@"PLCameraView"])
                         {
                             UIView *theView = (UIView *)subview;

                             for (UIView *subview in theView.subviews)
                             {
                                 if([NSStringFromClass([subview class]) isEqualToString:@"CAMTopBar"])
                                 {
                                      subview.backgroundColor = [UIColor blackColor];
                                 }
                                 if([NSStringFromClass([subview class]) isEqualToString:@"CAMBottomBar"])
                                 {
                                      subview.backgroundColor = [UIColor blackColor];
                                 }
                                 if([NSStringFromClass([subview class]) isEqualToString:@"PLCropOverlay"])
                                 {
                                     UIView *theView = (UIView *)subview;

                                     for (UIView *subview in theView.subviews)
                                     {
                                         if([NSStringFromClass([subview class]) isEqualToString:@"PLCropOverlayBottomBar"])
                                         {
                                              UIView *theView = (UIView *)subview;

                                              for (UIView *subview in theView.subviews)
                                              {
                                                  if([NSStringFromClass([subview class]) isEqualToString:@"PLCropOverlayPreviewBottomBar"])
                                                  {
                                                      subview.backgroundColor = [UIColor blackColor];
                                                  }
                                              }
                                          }
                                      }
                                  }
                              }
                          }
                      }
                 }
             }
         }
     }
}];

Answer 3

UIImagePickerController是一个UINavigationController。你抱怨的吧是UINavigationController的toolbar。您肯定知道，iOS 7默认情况下工具栏是透明的（或至少是半透明的）。

UIImagePickerController黑色不透明底栏

3 个答案: