我有一个应用程序，允许用户从他们的相机胶卷中选择一张照片，并将其显示在 UIImageView 中。但是，在他们点击他们想要显示的图像后，相机胶卷的视图并没有消失。所以，我认为我需要简单地调用[sender resignFirstResponder];. 但是，这并没有奏效。我一直在尝试多种方法并四处寻找，但无济于事。我对 Objective-C 非常陌生，因此非常感谢任何帮助。这是我正在使用的代码：（imgPicker 是 UIImagePickerController。）
- (IBAction)grabImage(id)sender {
self.imgPicker = [[UIImagePickerController alloc] init];
self.imgPicker.delegate = self;
self.imgPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
_popover = [[UIPopoverController alloc] initWithContentViewController:imgPicker];
[_popover presentPopoverFromRect:self.imageView.bounds inView:self.imageView permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}
else {
[self presentModalViewController:imgPicker animated:YES];
}
[self.imgPicker resignFirstResponder];
}
这可能与问题相关，也可能不相关：
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)img editingInfo:(NSDictionary *)editInfo {
if (imageView.image == nil) {
imageView.image = img;
[[picker parentViewController] dismissModalViewControllerAnimated:YES];
return;
}
if (imageView2.image == nil) {
imageView2.image = img;
[[picker parentViewController] dismissModalViewControllerAnimated:YES];
return;
}
}