Question

我在这里看过很多帖子，社区都有非凡的答案。不幸的是，没有人能够帮助或指导我需要帮助。我试图＆＃34;获取＆＃34; ＆＃34;当前用户＆＃34;的图像上传解析同一个＆＃34; UIImageView＆＃34;

下面是我上传照片的示例

myaccount.h

  @property (strong, nonatomic) IBOutlet UIImageView *imageView;

- (IBAction)UploadPhoto:(id)sender;
- (IBAction)selectPhoto:(id)sender;

myaccount.m

- (IBAction)UploadPhoto:(UIButton *)sender {

PFObject *User = [PFUser currentUser];
NSData *imageData = UIImageJPEGRepresentation(_imageView.image, 0.8);
NSString *filename = [NSString stringWithFormat:@"%@.png", _username.text];
PFFile *imageFile = [PFFile fileWithName:filename data:imageData];
[User setObject:imageFile forKey:@"ProfilePicture"];

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

// Upload Profile Picture to Parse
[User saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
    [hud hide:YES];
    if (!error) {
        // Show success message
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Upload Complete" message:@"Successfully uploaded profile picture" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
        [alert show];

        // Dismiss the controller
        //[self dismissViewControllerAnimated:YES completion:nil];

    } else {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Upload Failure" message:[error localizedDescription] delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
        [alert show];

    }


}];

}

老实说，我不知道从哪里开始！这张照片完美地上传到了parse.com上的课程...但我不能让它每次都显示应用程序viewdidloads这个控制器。

我试过

- (void)viewDidLoad {

[super viewDidLoad];

PFFile * myPFFile = [[PFUser currentUser] objectForKey:@"ProfilePicture"];
[myPFFile getDataInBackgroundWithBlock:^(NSData *data, NSError *error) {
    if (!error) {
        UIImage *image = [UIImage imageWithData:data];
        // image can now be set on a UIImageView
    }
}];

但是我得到了未使用的变量＆＃34; image＆＃34;在UIImage * image = [UIImage imageWithData：data];

我在做错了什么。有人请帮我解决我所遗漏的任何代码。我已经在这里工作了3个月，它阻止我前进....... PPPPLLZZZ帮助

Answer 1

我错过了什么？你把图像放在imageView中吗？（这就是为什么你得到＆＃34;未使用的变量＆＃34;图像＆＃34;＆＃39;）

在你的情况下：

[imageView setImage:image];

从parse.com获取1张图片

1 个答案: