I am working on one application where i have to load images from server.
アプリストアのリンクからアプリケーションのスクリーンショットを読み込もうとしています。私は画像を取得していますが、それほど鮮明ではありません。バックグラウンドで画像を取得していますが、すべて正常に動作しますが、結果の画像は少しぼやけて見えます。この画像を Retina ディスプレイでテストしています。なぜそれが起こっているのか、誰もが何らかの考えを持っています。どんな解決策も役に立ちます。
ありがとう、
画像をロードするための私のコードは次のとおりです。
// This will create the imageview with required frame & use the url to load the image
-(void)loadAppsScreenShots:(int)i Frame:(CGRect)frame withImageUrl:(NSString *)urlStr
{
UIImageView *appImageView = [[UIImageView alloc] init];
frame.origin.x = 0;
appImageView.frame = frame;
appImageView.tag = i;
sharedImageCache = [ImageCache sharedImageCacheInstance];
UIImage *image1 = [sharedImageCache getCachedImage:[NSString stringWithFormat:@"%@",urlStr]];
if (image1==nil)
{
// Show indicator till image loads
UIActivityIndicatorView *indiView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
indiView.center = CGPointMake(appImageView.frame.size.width/2, appImageView.frame.size.height/2);
[appImageView addSubview:indiView];
[indiView startAnimating];
indiView.hidden = FALSE;
// Show label indicating image loading process
UILabel *loadingLbl = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 200, 25)];
loadingLbl.text = @"";//@"Please wait...";
loadingLbl.center = CGPointMake(appImageView.frame.size.width/2 + 5, appImageView.frame.size.height/2 + 23);
loadingLbl.font = [UIFont fontWithName:@"Helvetica-Bold" size:15.0f];
loadingLbl.textAlignment = UITextAlignmentCenter;
loadingLbl.backgroundColor = [UIColor clearColor];
loadingLbl.textColor = [UIColor whiteColor];
[appImageView addSubview:loadingLbl];
[appImageView sendSubviewToBack:loadingLbl];
loadingLbl.hidden = FALSE;
// Dictionalry to get all objects & pass it to method where we load the data
NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
[dict setObject:appImageView forKey:@"imageView"];
if (urlStr != nil) {
[dict setObject:urlStr forKey:@"url"];
}
[dict setObject:indiView forKey:@"indi"];
[dict setObject:loadingLbl forKey:@"loadingLbl"];
[self performSelectorInBackground:@selector(loadImageFromURLAndSaveInDocDir:) withObject:dict];
}
else
{
appImageView.image = image1;
}
[[appView viewWithTag:i] addSubview:appImageView];
[appView bringSubviewToFront:appImageView];
appImageView.contentMode = UIViewContentModeScaleAspectFit;
appImageView=nil;
}
-(void)loadImageFromURLAndSaveInDocDir:(NSMutableDictionary *)dict
{
@autoreleasepool
{
UIImageView *cellImageViewObj = [dict objectForKey:@"imageView"];
NSString *url;
UIActivityIndicatorView *indiview = [dict objectForKey:@"indi"];
UILabel *Lbl = [dict objectForKey:@"loadingLbl"];
if ([dict objectForKey:@"url"])
{
url = [dict objectForKey:@"url"];
// fetch the data
NSURL *imgURL = [NSURL URLWithString:url];
NSData *imgData = [NSData dataWithContentsOfURL:imgURL];
NSString *filename = [Utils getFileNameFromURL:url];
// Cache the image
[sharedImageCache cacheImage:[NSString stringWithFormat:@"%@",filename] :imgData];
UIImage *image1 = [[UIImage alloc] initWithData:imgData];
cellImageViewObj.image = image1;
image1=nil;
}
else {
url = @"";
}
// set the content mode & hide the indicator & label
cellImageViewObj.contentMode = UIViewContentModeScaleAspectFit;
[indiview stopAnimating];
indiview.hidden = TRUE;
Lbl.hidden = TRUE;
dict = nil;
}
}
何が間違っているのですか。