解析122错误上传

Question

如果我在字段中没有任何文本的情况下保存文本，我在Parse.com中收到此错误消息：更新失败 - 操作无法完成（解析错误122.）如果我按OK然后尝试使用取消（按钮项）取消视图应用程序崩溃。我认为Parse.com上的有效文件名必须包含至少1个字符。也许我可以做些什么来阻止用户在不输入文本时保存？有任何想法吗？

这是我的代码：

- (IBAction)save:(id)sender {
    // Create PFObject with profile information
    PFUser *profile = [PFUser currentUser];
    [profile setObject:nameTextField.text forKey:@"name"];
    [profile setObject:titleTextField.text forKey:@"title"];
    [profile setObject:locationTextField.text forKey:@"location"];

    // Profile image
    NSData *imageData = UIImageJPEGRepresentation(profileImageView.image, 0.8);

    NSString *filename = [NSString stringWithFormat:@"%@", nameTextField.text];

    PFFile *imageFile = [PFFile fileWithName:filename data:imageData];
    [profile setObject:imageFile forKey:@"profileimageFile"];

    // Show progress
    MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
    hud.mode = MBProgressHUDModeIndeterminate;
    hud.labelText = @"Updating";
    [hud show:YES];

    // Upload profile to Parse

    if(nameTextField.text.length==0 && titleTextField.text.length==0 && locationTextField.text.length==0)

    [hud hide:YES];

    [profile saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {

            if (error) {
                [[[UIAlertView alloc] initWithTitle:@"Profile Information" message:@"Fill in atleast one field" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]show];

                [hud hide:YES];
            }
            else {
            // Show success message
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"" message:@"Successfully updated profile" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
            [alert show];

            [hud hide:YES];

            [self dismissViewControllerAnimated:YES completion:nil];

            [self performSegueWithIdentifier:@"profile" sender:self];
        }
    }];
}


- (IBAction)Cancel:(id)sender {

    [self dismissViewControllerAnimated:YES completion:nil];
    [self performSegueWithIdentifier:@"profile" sender:self];
}

Answer 1

1

测试你的单字母理论是否属实。变化：

NSString *filename = [NSString stringWithFormat:@"%@", nameTextField.text];

要：

NSString *filename = [NSString stringWithFormat:@"file%@", nameTextField.text];

2

如果它是空白的话，可以避免它。所以这个：

NSString *filename = [NSString stringWithFormat:@"%@", nameTextField.text];

PFFile *imageFile = [PFFile fileWithName:filename data:imageData];
[profile setObject:imageFile forKey:@"profileimageFile"];

变为：

if (nameTextField.text) {
    NSString *filename = [NSString stringWithFormat:@"%@", nameTextField.text];

    PFFile *imageFile = [PFFile fileWithName:filename data:imageData];
    [profile setObject:imageFile forKey:@"profileimageFile"];
}

3

另外，这是什么：

if(nameTextField.text.length==0 && titleTextField.text.length==0 && locationTextField.text.length==0)

它似乎与任何东西无关？

4

您可以快速连续调用两次，然后在文件保存后再次调用。方法中是否存在必要的重复调用？

[hud hide:YES];

5

您的if语句似乎与任何内容无关：

if(nameTextField.text.length==0 && titleTextField.text.length==0 && locationTextField.text.length==0)

我假设你想要：

if(nameTextField.text.length==0 && titleTextField.text.length==0 && locationTextField.text.length==0) {

    [hud hide:YES];

    [profile saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {

        if (error) {
            [[[UIAlertView alloc] initWithTitle:@"Profile Information" message:@"Fill in atleast one field" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]show];

            [hud hide:YES];
        }
        else {
            // Show success message
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"" message:@"Successfully updated profile" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
            [alert show];

            [hud hide:YES];

            [self dismissViewControllerAnimated:YES completion:nil];

            [self performSegueWithIdentifier:@"profile" sender:self];
        }
    }];
}