添加个人资料图片在用户注册使用Parse - iOS

Question

我正在尝试使用Parse.com作为我的后端创建一个新用户。我能够成功注册用户的信息。但是，我的问题是保存用户的个人资料图片连同它。在用户使用相机或照片库选择图片之后，我将使用.xib文件呈现图像编辑器(https://github.com/heitorfr/ios-image-editor)。这一切都很好，没有问题。然后图像被放置在UIImageView框中，用户继续填写用户名、电子邮件和密码，然后点击注册。问题是他们注册后，所有的信息通过解析放置在表中，图像容器似乎是空的。当我点击图像文件时，图片不在那里。我似乎不知道我做错了什么。

View Did Load

- (void)viewDidLoad {
[super viewDidLoad];
self.addPhotoImageView.contentMode = UIViewContentModeScaleAspectFill;

// Create add photo popup
self.addPhotoActionSheet = [[UIActionSheet alloc] initWithTitle:@"Select source" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Take photo", @"Choose photo", nil];
// Create image picker
self.imagePicker = [[UIImagePickerController alloc] init];
self.imagePicker.delegate = self;
self.imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
self.imagePicker.editing = YES;
}

图像选择器控制器委托方法

// Switches to the image editing view
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
[self.imagePicker dismissViewControllerAnimated:NO completion:nil];
if (self.imageEditorViewController == nil) {
    self.imageEditorViewController = [[HFImageEditorViewController alloc] initWithNibName:@"ImageEditor" bundle:nil]; }
self.imageEditorViewController.sourceImage = image;
self.imageEditorViewController.rotateEnabled = NO;
self.imageEditorViewController.checkBounds = YES;
[self.imageEditorViewController reset:NO];

__weak typeof(self) weakSelf = self;
self.imageEditorViewController.doneCallback = ^(UIImage *editedImage, BOOL canceled) {
    if (!canceled) {
        [weakSelf.addPhotoImageView setImage:editedImage];

    }
    // Hide editor
    [weakSelf.imageEditorViewController dismissViewControllerAnimated:YES completion:nil];
};
[self presentViewController:self.imageEditorViewController animated:NO completion:nil]; }
- (void) imagePickerControllerDidCancel:(UIImagePickerController *)picker {
[self dismissViewControllerAnimated:YES completion:nil]; }

<<p> UIActionSheetDelegate方法/strong>

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
switch (buttonIndex) {
    case 0:
        self.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
        break;
    case 1:
        self.imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        break;
    default:
        return;
}
[self presentViewController:self.imagePicker animated:YES completion:nil]; }

以下是IBAction注册代码:

- (IBAction)signup:(id)sender {
NSData *imageData = UIImageJPEGRepresentation(self.chosenImage, 0.5f);
PFFile *imageFile = [PFFile fileWithName:@"Profileimage.jpg" data:imageData];
NSString *username = [self.usernameField.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
NSString *email = [self.emailField.text stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];
NSString *password = [self.passwordField.text stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];
if ([username length] == 0 || [email length] == 0 || [password length] == 0) {
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Oops" message:@"Make sure you fill in all the fields!" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [alertView show];
}
else {
    PFUser *newUser = [PFUser user];
    newUser[@"ProfilePic"] = imageFile;
    newUser.username = username;
    newUser.email = email;
    newUser.password = password;
    [newUser signUpInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
        if (error) {
            UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Sorry!" message:[error.userInfo objectForKey:@"error"] delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
            [alertView show];
        }
        else {
            [self.navigationController popToRootViewControllerAnimated:YES];
        }
    }];
}

}

Answer 1

在使用- signUpInBackgroundWithBlock:
时，没有迹象表明Parse.com API文档中设置了密码和用户名以外的任何信息您必须首先注册用户，然后在signUp方法的PFBooleanResultBlock中嵌套调用以执行

else {
    PFUser *newUser = [PFUser user];
    newUser.username = username;
    newUser.email = email;
    newUser.password = password;
    [newUser signUpInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
      if (error) {
        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Sorry!" message:[error.userInfo objectForKey:@"error"] delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [alertView show];
      }
      else {
        newUser[@"ProfilePic"] = imageFile;
        [newUser saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
            if (! error) {         
              [self.navigationController popToRootViewControllerAnimated:YES];
            }
        }];
      }
    }];
}

Answer 2

您需要将其设置为将文件发送到数据库的位置，因为Parse将这样存储图像。下面是我在项目中保存图片的方法。

. h文件:

        @property (nonatomic, weak) IBOutlet UITextField *username
        @property (nonatomic, weak) IBOutlet UITextField *email;
        @property (nonatomic, strong) IBOutlet UIImageView *photo;
        @property (nonatomic, strong) IBOutlet UIButton *addUserPhoto;

。保存方法

中的M文件

        NSString *username = _username.text;
        NSString *email = _email.text;
        PFObject *newUser = [PFObject objectWithClassName:@"User"];
        [newUser setObject:username forKey:@"username"];
        [newUser setObject:email forKey:@"email"];
 // image
        NSData *imageData = UIImageJPEGRepresentation(_photo.image, 0.8);
        NSString *filename = [NSString stringWithFormat:@"%@.png", _name.text];
        PFFile *imageFile = [PFFile fileWithName:filename data:imageData];
        [newUser setObject:imageFile forKey:@"profileImage"];

将_Photo替换为图像视图的任何名称。它将把上传的图像设置为这个视图。