如何从 UIImageView 将图像上传到 Parse.com-移动开发问题

How to upload an image to Parse.com from UIImageView(如何从 UIImageView 将图像上传到 Parse.com)

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问题描述

我的应用名为Draw Me"并使用 Parse.com.用户在 UIImageView 中绘制图像，应将其保存(上传)到 Parse.com.有人可以建议怎么做吗?

My App is called "Draw Me" and use Parse.com. User draws an image in UIImageView and it should be saved(uploaded) to Parse.com. Can someone advise how to do it?

推荐答案

Parse 有一个关于这个确切主题的 iOS 教程:https://parse.com/tutorials/anypic

Parse has an iOS tutorial on this exact topic: https://parse.com/tutorials/anypic

Christian 已经概述了如何保存图像本身，但我假设您也希望将其与 PFObject 关联.基于他的答案(以保存为 jpeg 的示例)

Christian has outlined how to save the image itself, but I assume you also want to associate it with a PFObject as well. Building on his answer (with an example of saving out as jpeg)

// Convert to JPEG with 50% quality
NSData* data = UIImageJPEGRepresentation(imageView.image, 0.5f);
PFFile *imageFile = [PFFile fileWithName:@"Image.jpg" data:data];

// Save the image to Parse

[imageFile saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
    if (!error) {
        // The image has now been uploaded to Parse. Associate it with a new object 
        PFObject* newPhotoObject = [PFObject objectWithClassName:@"PhotoObject"];
        [newPhotoObject setObject:imageFile forKey:@"image"];

        [newPhotoObject saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
            if (!error) {
                NSLog(@"Saved");
            }
            else{
                // Error
                NSLog(@"Error: %@ %@", error, [error userInfo]);
            }
        }];
    }
}];

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