设置新的视图的UIImage并显示它

Question

我试图设置一个新的视图的图像。余设置控制器的图像然后显示图。但在控制器的viewDidLoad，无图像是可用的。

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo {

EditPictureSaveViewController *editPictureController = [EditPictureSaveViewController alloc];

[editPictureController initWithNibName:@"EditPictureSaveView" bundle:[NSBundle mainBundle]];

UIImageView *imageView = [ [ UIImageView alloc ] initWithImage: image ];
[imageView setImage:image];
[editPictureController setPreview:imageView];

[self.navigationController pushViewController:editPictureController animated:YES];

Answer 1

这是因为viewDidLoad中通过

称为

[editPictureController initWithNibName:@"EditPictureSaveView" bundle:[NSBundle mainBundle]];

后的NIB被加载。

editPictureController的图像属性（我假定是一个UIImageView！ - 混淆）。没有设置直到在此之后

做任何你在viewDidLoad中在viewWillAppear中做：方法来代替 - 当pushViewController图像属性将被设置：动画：调用viewWillAppear中：

。