How to get image from server using NSUrlConnection

问题:

This question already has answers here:

iOS: Download image from url and save in device (9 answers)

Closed 7 years ago.

How to get image from server by sending one parameter with url.

GET HTTPRequest has to be use to send request.

回答1:

You can get image from server with specific path of that image with image name.

UIImage* serverImage = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString: @"http://example.com/image_name.png"]]];

then you can use serverImage anywhere you want.

回答2:

Try to use this :

-(UIImage*)getImageFromURLwithUrl:(NSString*)imgURLStr
{
    NSMutableURLRequest *requestWithBodyParams = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:imgURLStr]];
    NSData *imageData = [NSURLConnection sendSynchronousRequest:requestWithBodyParams returningResponse:nil error:nil];
    UIImage *image = [UIImage imageWithData:imageData];

    return image;
}

回答3:

A pretty useful project that I use to load Images without blocking the UI is the SDWebImage. It adds an asynchronous category on UIImageView, enabling you to load an image with just one line of code:

[myImageView setImageWithURL:[NSURL URLWithString:@"http://www.domain.com/path/to/image.jpg"]
               placeholderImage:[UIImage imageNamed:@"placeholder.png"]];