我試圖使用下面的方法加載3個圖像。問題是這樣的,我收到我的完成塊沒有錯誤,並且所有3個圖像僅在關閉我的detailedViewController並重新打開後才顯示。SDWebImage下載後不顯示(僅在重新打開VController後)
我錯過了什麼?感謝您的任何幫助,非常感謝。
- (UIImage*)loadImageFav1:(NSString *)nameEmail
{
UIImageView *img =[[UIImageView alloc]init];
// NSString *strBack = [NSString stringWithFormat:@"%@%@%@", self.urlPrefix,[self.selectedProfile objectForKey:nameEmailPro],@"_B.png"];
NSString *strProfi = [NSString stringWithFormat:@"%@%@%@", self.urlPrefix,nameEmail,@"_fav1.png"];
//
// NSURL *bkgUrl = [NSURL URLWithString:[strBack stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
NSURL *f1Url = [NSURL URLWithString:[strProfi stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
// // set imges below
NSLog(@"selected fprofile ......str data...%@",strProfi);
////////strt
weakImageViewF1= self.friendImageView1;
[img sd_setImageWithURL:f1Url
placeholderImage:[UIImage imageNamed:@"profile-1.jpg"]
options:SDWebImageRetryFailed
completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
NSLog(@"error...back..log %@", error);
if (image) {
// Update model to say that the image was downloaded
NSLog(@"Complete...Background...SSSSSS");
weakImageViewF1.image = image;
[weakImageViewF1 setNeedsLayout];
}
}];
//////
// Test simple call
// [img sd_setImageWithURL:f1Url placeholderImage:[UIImage imageNamed:@"profile-1.jpg"] completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
// if(error){
// NSLog(@"Callback Error:%@",error);
// }
// if(image){
// NSLog(@"Callback Image:%@",image);
// }
// }];
return img.image;
}
在ViewDidAppear調用所有3個圖像
if ([self loadImageFav1:self.emailID] != nil) {
// call the same method on a background thread
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
UIImage *tmpF1 = [self loadImageFav1:self.emailID];
UIImage *tmpF2 = [self loadImageFav2:self.emailID];
UIImage *tmpF3 = [self loadImageFav3:self.emailID];
// update UI on the main thread
dispatch_async(dispatch_get_main_queue(), ^{
self.friendImageView1.image = tmpF1;
self.friendImageView2.image = tmpF2;
self.friendImageView3.image = tmpF3;
});
});
}
/////得到它的工作,但我非常資料解讀 - 感謝
因此,要得到它的工作我直接將sdWebImageWithURL設置爲我的原始ImageView並停止使用臨時UIImageView * img = [[UIimageVew alloc] init];
我去從:
[img sd_setImageWithURL:f1Url placeholderImage:[UIIm...
要:
[self.friendImageView1 sd_setImageWithURL:f1Url placeholderImage:[UIIm...
感謝您的幫助。我已經取出了背景線程,所以我的viewDidAppear現在看起來像這樣.... self.friendImageView1.image = [self loadImageFav1:self.emailID]; self.friendImageView2.image = [self loadImageFav2:self.emailID]; self.friendImageView3.image = [self loadImageFav3:self.emailID]; ....沒有運氣我只有佔位符圖像,直到我重新加載VC。 – AhabLives
@AhabLives查看我答案的更新。 –
大謝謝@Mike的解釋。我討厭不理解爲什麼某些東西比其他東西更有效。 – AhabLives