objective-c - 如何从 NSHomeDirectory 加载图像

Question

所以，我目前通过这种方法将图像保存在我的 UIImageView 中:

- (void)applicationDidEnterBackground:(UIApplication*)application {

    NSString  *image1 = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/image1.png"];
    NSString  *image2 = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/image2.png"];
}

图像保存得很好，但我不知道如何在 viewDidLoad 中设置 UIImageViews 图像。这是我一直在尝试的:

- (void)viewDidLoad
{
    self.imageView.image =[UIImage imageNamed:[(NSHomeDirectory *)Documents objectForKey:@"image1"]];

    self.imageView2.image =[UIImage imageNamed:[(NSHomeDirectory *)Documents objectForKey:@"image1"]];
}

但是，显然那是行不通的。我无法理解这里的基础知识。任何帮助都会很棒，谢谢!

Answer 1

-imageNamed: 方法在应用程序的主包中查找命名图像是否尚未缓存。来自文档:

The name of the file. If this is the first time the image is being loaded, the method looks for an image with the specified name in the application’s main bundle.

(参见 UIImage class reference)

您需要 -imageWithContentsOfFile: 代替。