Objective C從遠程url下載圖片方法匯總

Objective C從遠程url下載圖片方法匯總

 　　本文給大家分享了2則使用Objective C從遠程url下載圖片的方法，都是個人項目中使用的，匯總下推薦給大家，有需要的小夥伴可以參考下。

　　Objective C從遠程url下載圖片

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- (UIImage *) getImageFromURL: (NSString *)theURL { UIImage *theImage = NULL; NSString *imageFileName = [BT_strings getFileNameFromURL:theURL]; NSData *imageData = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:theURL]]; theImage = [[UIImage alloc] initWithData:imageData]; [BT_fileManager saveImageToFile:theImage fileName:imageFileName]; return theImage; }

　　objective C從遠程地址擷取圖片並修改尺寸

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NSString* imageURL = [NSString stringWithFormat: @"http://theimageurl.com/?id=%@", [[resultsEntries objectAtIndex:0] objectForKey: @"image_large"]]; NSData* imageData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:imageURL]]; UIImage* image = [[UIImage alloc] initWithData:imageData];   // resize image CGSize newSize = CGSizeMake(100, 100); UIGraphicsBeginImageContext( newSize );// a CGSize that has the size you want [image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];   //image is the original UIImage UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext();   imageHeight = image.size.height; [imageMain setImage:newImage]; [imageData release]; [image release];

　　以上所述就是本文的全部內容了，希望大家能夠喜歡。