PFImageView for dummies [英] PFImageView for dummies

问题描述

大家好，我正在寻找一周以来的解析。我真的了解最多的东西。如何在tableViews和Cells等上检索字符串，数组，文件......

无处不在（我的意思是无处不在）我可以找到几个tableviews，collectionViews和除了VİEWCONTROLLER之外的其他东西



所以要显示我的理解方式



检索或显示PFImageView我们必须先连接到我们的.h文件

所以这是我的

Hi guys I'm searching since 1 week for parse . I really understand the most things . how to retrieve strings ,arrays ,file on tableViews and Cells etc. ...
Everywhere ( i really mean everywhere ) i could find for several tableviews ,collectionViews and other thing except for VİEWCONTROLLER

so to show how I understood things

Retrieving or showing a PFImageView we have to first connect to our .h file
so this is mine

@property (strong, nonatomic) IBOutlet PFImageView *BuyPetImage;

after转到我们的.m文件并将它们添加到我们的ViewDidLoad方法

after that were going to our .m file and add these to our ViewDidLoad method

PFQuery *query = [PFQuery queryWithClassName:@"Recipe"];
//    [query orderByDescending:@"createdAt"];
    
    [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
        
        if (!error) {
            for (PFObject *object in objects) {
            
                
                PFFile *file = object[@"imageFile"];
                [file getDataInBackgroundWithBlock:^(NSData *data, NSError *error) {
                    if (!error) {
                        
                        
                        [BuyPetImage loadInBackground];
                        BuyPetImage.image = file; //may be this could be the wrong part ?

                        
                     
                    }} ];} } } ];

所以我的问题是：我没有任何错误但是当我运行它时，它不会显示在我的应用程序中。

So my problem is: I don't have any error but it's not shown in my app when I run it.

推荐答案

您必须重新排列代码。正如文档所述：

You must rearrange your code. As the documentation says:

BuyPetImage.image = file; //set file
[BuyPetImage loadInBackground];//start download

您是否阅读过所用课程的文档： - O

Didnt you read the docs of the classes you use :-O

我已经改变了它但我认为没关系。



同时我改变了文件而不是图像.. 。

BuyPetImage.file = file; //设置文件

[BuyPetImage loadInBackground]





所以我这样做了。但仍然是空白的图片





i得到一个----套接字未连接

2015-08 -02 19：33：19.175 RecipeBook [4991：245248]从S3下载失败。再试一次。响应：（null），错误：错误Domain = NSPOSIXErrorDomain Code = 57操作无法完成。套接字未连接

2015-08-02 19：33：19.176 RecipeBook [4991：245248]错误：下载失败。----错误是什么？

i have changed it but i think it doesn't matter.

meanwhile i changed file instead of image ...
BuyPetImage.file = file; //set file
[BuyPetImage loadInBackground]


so i did this . but still empty picture


i get a ----Socket is not connected"
2015-08-02 19:33:19.175 RecipeBook[4991:245248] Failed download from S3. Going to try again. Response: (null), Error: Error Domain=NSPOSIXErrorDomain Code=57 "The operation couldn’t be completed. Socket is not connected"
2015-08-02 19:33:19.176 RecipeBook[4991:245248] Error: Download failed. ---- error what is this ?

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