正如标题所述,我需要创建一个非常简单的相机叠加,同时使用UI
ImagePickerController拍照.我想在相机上添加非常简单的.png文件(如一个空盒子),但我无法弄清楚如何做.
我已经检查了这个网页上的大部分教程,但是不了解大部分教程.看起来很难,并且添加一个简单的.png文件到相机覆盖应该比这更容易.
(IBAction) getPhoto:(id) sender {
UIImagePickerController * picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
if((UIButton *) sender == choosePhotoBtn) {
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
} else {
}
label1.text =@"PHOTO ACTION";
[self presentModalViewController:picker animated:YES];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediawithInfo:(NSDictionary *)info {
[picker dismissModalViewControllerAnimated:YES];
imageView.image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
}
我应该在哪里实施重叠代码？我应该使用什么类,我该怎么办？
解决方法
UIImagePickerController有一个名为cameraOverlayView的属性.它是一个UIView *,所以你需要创建一个,并把你的PNG的背景,然后将它分配给你的选择器的这个属性.
好的,这是代码(我没有测试它)
(IBAction) getPhoto:(id) sender
{
UIImagePickerController * picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
// creating overlayView
UIView* overlayView = [[UIView alloc] initWithFrame:picker.view.frame];
// letting png transparency be
overlayView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"yourimagename.png"]];
[overlayView.layer setopaque:NO];
overlayView.opaque = NO;
picker.showsCameraControls = NO;
picker.cameraOverlayView = overlayView;
if((UIButton *) sender == choosePhotoBtn)
{
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
[picker setSourceType:UIImagePickerControllerSourceTypeCamera];
} else {
//do something if the device has no camera or if the camera is disabled in settings (it cannot be assumed that the camera is available/not broken)
}
} else {
}
label1.text =@"PHOTO ACTION";
[self presentModalViewController:picker animated:YES];
}
当然,您可以使用一些自定义UIView *子类,而不是创建标准的UIView * overlayView,但其他所有内容都将保持不变.