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POAsync image in button issue
 

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  1. POAsync image in button issue
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    <p>I have a piece of code like this in my function. And I do a looping creating a async image inside the button. But when I run it, my button do not show the async image.Please tell me what's wrong with my code. When I print NSLog the url, its going well and show all of the image url.</p> <pre><code> // ADD BUTTON UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom]; [btn setFrame:CGRectMake(topLeft.x,topLeft.y,width,height)]; //Asyncronous Image NSMutableString *imageUrl; if ([[[type objectAtIndex:btnNumber] objectForKey:@"LAST_CONTENT_IMAGE"] isEqualToString:@""] || [[type objectAtIndex:btnNumber] objectForKey:@"LAST_CONTENT_IMAGE"] == nil) { imageUrl = [NSMutableString stringWithFormat:@"bank_images/actual/"]; }else{ imageUrl = [[type objectAtIndex:btnNumber] objectForKey:@"LAST_CONTENT_IMAGE"]; } NSURL *url1 = [NSURL URLWithString:imageUrl]; NSLog(@"URL GBR : %@", url1); NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *stringSub = [imageUrl substringWithRange:NSMakeRange (imageUrl.length-9, 9)]; NSString *path = [NSString stringWithFormat:@"%@/%u_%@", documentsDirectory,[GlobalVariable sharedInstance].indexCategoryGlobal,stringSub]; if ([[NSFileManager defaultManager] fileExistsAtPath:path]) { NSData *img = [NSData dataWithContentsOfFile:path]; UIImage *imageExist = [UIImage imageWithData:img]; image = imageExist; [btn setImage:image forState:UIControlStateNormal]; }else{ dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0); dispatch_async(queue, ^{ //This is what you will load lazily NSData *data1 = [NSData dataWithContentsOfURL:url1]; dispatch_sync(dispatch_get_main_queue(), ^{ image = [UIImage imageWithData:data1]; [btn setImage:image forState:UIControlStateNormal]; if ([stringSub isEqualToString:@"s/actual/"]){ image = [UIImage imageNamed:@"default_thumb.png"]; [btn setImage:image forState:UIControlStateNormal]; } [[NSFileManager defaultManager] createFileAtPath:path contents:data attributes:nil]; }); }); } [btn setTag:btnNumber]; </code></pre>
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    1. COAre you aware of SDWebImage and if not go through this link: https://github.com/rs/SDWebImage
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      1. POAsync image in button issue
      1. USManohar Perepa
    2. COSo that you can use directly [btn setImageWithUrl:];
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      1. POAsync image in button issue
      1. USManohar Perepa
    3. COthanks @venkat, but I prefer to use this code now. Could you help me please without using that library? :)
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