我有一个使用 UIImagePickerController
拍照的应用程序。问题是我只希望相机选项可用,而且我知道我需要隐藏标准控件:
cameraUI.showsCameraControls=NO;
并使用 cameraOverlayView
提供我自己的控件。我已经看过 Apple 的 PhotoPicker
项目,我最初的问题是如何将 Overlay
对象放到 Storyboard上?我在图书馆找不到这样的对象。
最佳答案
代码如下:
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 添加这个 OverlayView.h 和 .m 类。
使用自定义相机按钮拍摄照片的操作:
-(void) shootPicture {
[imagePickerController takePicture];
}
- (IBAction)cancelPicture {
[self dismissViewControllerAnimated:YES completion:nil];
}
输出将如下图所示(我在自定义叠加 View 中添加了捕获按钮和取消按钮):
快乐编码:)
关于ios - 将 cameraOverlayView 与 UIImagePickerController 结合使用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/20590346/