如何在ios中使用URL和NSString在UIImageView上显示图像？ [英] How to display image on UIImageView using URL and NSString in ios?

问题描述

我想使用URL和 NSString 在 UIImageView 上显示图像。我无法显示图片。

I want to display image on UIImageView using URL and NSString. I am unable to show image.

我的代码是：

UIImageView *view_Image = [[UIImageView alloc]initWithFrame:CGRectMake(view_Image_Pos_X, view_Image_Pos_Y, 179, 245)];

view_Image.backgroundColor = [UIColor greenColor];
view_Image.tag = img;
view_Image.userInteractionEnabled=YES;
view_Image.autoresizesSubviews = YES;
view_Image.alpha = 0.93;  
[self.view addSubview:view_Image];               

这就是我想要的：

 if (img == 0) {


 NSString *url_Img1 = @"http://opensum.in/app_test_f1/;";
 NSString *url_Img2 = @"45djx96.jpg";

 NSString *url_Img_FULL = [NSString stringWithFormat:@"%@%@", url_Img1,url_Img2];

 NSLog(@"Show url_Img_FULL: %@",url_Img_FULL);



 NSURL *url_img = [NSURL URLWithString:url_Img_FULL];
 NSLog(@"Show: url_img %@",url_img);

// Here below line working perfectly and image is showing             

view_Image.image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://opensum.in/app_test_f1/45djx96.jpg"]]];   // working code

但我不想要这个我想要连续两个url make one url（即; url_Img_FULL）然后传递给如下图像：

but i dont want this i want to concatanate two url make one url(ie;url_Img_FULL) and then pass to an image like below:

UIImage * image = [UIImage imageWithData：[NSData dataWithContentsOfURL：[NSURL URLWithString：url_Img_FULL] ]]; //不工作

我想从url_Img_FULL（即：两个网址的组合）图像将显示。
您还可以检查网址是否正常工作。
有什么想法？

I Want from "url_Img_FULL" (ie: combination of two url) The image will show. You can check also the url is working properly. Any idea?

推荐答案

    NSString *url_Img1 = @"http://opensum.in/app_test_f1";
    NSString *url_Img2 = @"45djx96.jpg";

    NSString *url_Img_FULL = [url_Img1 stringByAppendingPathComponent:url_Img2];

    NSLog(@"Show url_Img_FULL: %@",url_Img_FULL);
    view_Image.image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:url_Img_FULL]]]; 

试试这个。

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