Question

我正在尝试查看以前在ImagePickerView中选择的图像... 这是我的代码

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
    coffeeObj.coffeeImage=[image copy];

//    imagePreview.image=    coffeeObj.coffeeImage;

    [imagePreview setImage:coffeeObj.coffeeImage];

    [picker dismissModalViewControllerAnimated:YES];
}

显然，coffeeObj.coffeeImage是一个UIImage变量，但根本不起作用...... 但是如果我在这个函数中创建一个新的UIImage变量，那就完美了。我可以写coffeObj，因为如果我这样做：

coffeeObj.name=@"Ciao";

我查看变量名称已更改。

有什么想法吗？感谢

Answer 1

尝试使用此方法：

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
    coffeeObj.coffeeImage=image;

    imagePreview.image=    coffeeObj.coffeeImage;

    [picker dismissModalViewControllerAnimated:YES];
}

不推荐使用其他方法。

Answer 2

检查Coffee类的接口声明，并确保将coffeeImage存储为强引用

@property (nonatomic, strong) UIImage *coffeeImage;

UIImage不会复制到Variable中

2 个答案: