cameraOverlayView和UIImagePickerController使用
问题说明
我知道这已被问了很多次，但我找不到答案。
I know this has been asked a number of time but I can't find an answer.
我有一个使用的应用程序UIImagePickerController 拍照。问题是我只想要相机选项可用，我知道我需要隐藏标准控件：
I have an app that uses the UIImagePickerController to take a picture. The problem is that I only want the camera option to be available and I understand that I need to hide the standard controls:
cameraUI.showsCameraControls=NO;
并使用 cameraOverlayView 提供我自己的控制。我已经看过Apple的 PhotoPicker 项目了，我最初的问题是如何将 Overlay 对象放到我的身上故事情节？我在图书馆找不到这样的对象。感谢任何帮助。
and use a cameraOverlayView to provide my own controls. I have had a look at Apple's PhotoPicker project already and my initial problem is how do I get an Overlay object onto my storyboard? I can't find such an object in the library. Any help gratefully received.
正确答案
以下是代码：
toolBar=[[UIToolbar alloc] initWithFrame:CGRectMake(0, self.view.frame.size.height-54, self.view.frame.size.width, 55)];
toolBar.barStyle = UIBarStyleBlackOpaque;
NSArray *items=[NSArray arrayWithObjects:
[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(cancelPicture)],
[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil],
[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:@selector(shootPicture)],
[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil],
[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil],
nil];
[toolBar setItems:items];
// create the overlay view
overlayView = [[OverlayView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height-44)];
// important - it needs to be transparent so the camera preview shows through!
overlayView.opaque=NO;
overlayView.backgroundColor=[UIColor clearColor];
// parent view for our overlay
UIView *cameraView=[[UIView alloc] initWithFrame:self.view.bounds];
[cameraView addSubview:overlayView];
[cameraView addSubview:toolBar];
imagePickerController = [[UIImagePickerController alloc] init];
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera] == NO){
NSLog(@"Camera not available");
return;
}
imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePickerController.delegate = self;
// hide the camera controls
imagePickerController.showsCameraControls=NO;
imagePickerController.wantsFullScreenLayout = YES;
[imagePickerController setCameraOverlayView:cameraView];
[self presentViewController:imagePickerController animated:YES completion:nil];
在头文件中声明：
UIImagePickerController * imagePickerController;
UIToolbar *toolBar;
OverlayView *overlayView;
从Apples PhotoPicker添加此OverlayView.h和.m类。
Add this OverlayView.h and .m Class from Apples PhotoPicker.
使用自定义相机按钮拍摄照片的操作：
Actions for capturing photo using custom camera button:
-(void) shootPicture {
[imagePickerController takePicture];
}
- (IBAction)cancelPicture {
[self dismissViewControllerAnimated:YES completion:nil];
}
输出将如下图所示（我添加了一个捕获按钮和自定义叠加视图中的取消按钮）：
Output will come like this below attached screenshot (I have added a capture button and cancel button in custom overlay view):
快乐编码：）
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