无法使用模拟器从 iOS 中的 ImagePicker 获取图像路径和图像？

Posted 2023-03-12

【中文标题】无法使用模拟器从 iOS 中的 ImagePicker 获取图像路径和图像？

【英文标题】：Unabe to get image path & image from UIImagePicker in ios using simulator?

【发布时间】：2015-06-25 09:19:34

【问题描述】：

我正在尝试从 imagepicker 控制器获取图像路径和选定的图像。我使用委托方法来获取路径和图像，但我总是得到 null。

图片选择器显示代码

- (IBAction)choosePicture:(id)sender

    UIImagePickerController *pickerController = [[UIImagePickerController alloc]
                                                 init];
    pickerController.delegate = self;
    [self presentViewController:pickerController animated:YES completion:nil];

委托代码

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


    //You can retrieve the actual UIImage
    UIImage *pick_image = [editingInfo valueForKey:UIImagePickerControllerOriginalImage];

    NSURL *path = [editingInfo valueForKey:UIImagePickerControllerReferenceURL];
    [picker dismissViewControllerAnimated:YES completion:^
    ];

视图控制器的协议代码

#import <UIKit/UIKit.h>

@interface RegisterViewController : UIViewController <UIImagePickerControllerDelegate, UINavigationControllerDelegate>
@property (weak, nonatomic) IBOutlet UITextField *txt_fname;
@property (weak, nonatomic) IBOutlet UITextField *txt_lname;
@property (weak, nonatomic) IBOutlet UITextField *txt_profession;
@property (weak, nonatomic) IBOutlet UITextField *txt_language;
@property (weak, nonatomic) IBOutlet UITextField *txt_email;
@property (weak, nonatomic) IBOutlet UITextField *txt_password;
@property (weak, nonatomic) IBOutlet UITextField *txt_confirm_password;
@property (weak, nonatomic) IBOutlet UITextField *txt_profile;
@property (weak, nonatomic) IBOutlet UITextField *txt_address;

@end

【问题讨论】：

你在pick_image中得到了什么？

可以链接到模拟器，或者链接到这个：***.com/questions/3088874/…

pickercontroller 中已经可以有图片了 ;

【参考方案1】：

也许使用- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info;会更好

喜欢

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

    UIImage *originalImage = info[UIImagePickerControllerOriginalImage];

【参考方案2】：

使用这个委托方法

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info

以下一个已弃用（您使用过）

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo NS_DEPRECATED_ios(2_0, 3_0);

【参考方案3】：

尽管使用[editingInfo valueForKey:UIImagePickerControllerReferenceURL];，请使用[editingInfo valueForKey:UIImagePickerControllerMediaURL]，这将为您提供图像的路径。

【讨论】：

UIImagePickerControllerMediaURL 用于电影。