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我從ALAssetLibrary.My獲取後顯示圖像有問題如果有一個圖像,那麼它會很好,但如果有多個圖像,那麼最後一個圖像是隻出現,但不是先前的圖像。我發現在循環中存在問題並且無法找到是否。添加多個UIImages從ALAssetLibrary中啓用尋呼啓用UIScrollView
請讓我知道,如果有人解決這個問題。
mainScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 70, self.view.frame.size.width, self.view.frame.size.height)];
mainScrollView.pagingEnabled = YES;
mainScrollView.delegate=self;
mainScrollView.showsHorizontalScrollIndicator = NO;
mainScrollView.showsVerticalScrollIndicator = NO;
CGRect innerScrollFrame = mainScrollView.bounds;
for (NSInteger i = 0; i < images.count; i++) {
imageForZooming=[[UIImageView alloc]init];
if ([maincheck isEqualToString:@"YES"]) {
NSURL*url=[NSURL URLWithString:[images objectAtIndex:i]];
[library assetForURL:url resultBlock:^(ALAsset *asset)
{
UIImage *copyOfOriginalImage = [UIImage imageWithCGImage:[[asset defaultRepresentation] fullResolutionImage]];
[imageForZooming setImage:copyOfOriginalImage];
}
failureBlock:^(NSError *error)
{
NSLog(@"the error is %@",error);
}];
}
else{
[imageForZooming setImageWithURL:[NSURL URLWithString:[images objectAtIndex:i]]];
}
UITapGestureRecognizer*t=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(showblack:)];
t.numberOfTapsRequired=1;
imageForZooming.userInteractionEnabled=YES;
[imageForZooming addGestureRecognizer:t];
imageForZooming.frame=CGRectMake(0, 50, 320, 200);
imageForZooming.contentMode=UIViewContentModeScaleAspectFit;
imageForZooming.tag = VIEW_FOR_ZOOM_TAG;
pageScrollView = [[UIScrollView alloc] initWithFrame:innerScrollFrame];
pageScrollView.minimumZoomScale = 1.0f;
pageScrollView.maximumZoomScale = 4.5f;
pageScrollView.zoomScale = 1.0f;
pageScrollView.contentSize = imageForZooming.bounds.size;
pageScrollView.delegate = self;
pageScrollView.showsHorizontalScrollIndicator = NO;
pageScrollView.showsVerticalScrollIndicator = NO;
[pageScrollView addSubview:imageForZooming];
[mainScrollView addSubview:pageScrollView];
if (i < images.count-1) {
innerScrollFrame.origin.x += innerScrollFrame.size.width;
}
}
mainScrollView.contentSize = CGSizeMake(innerScrollFrame.origin.x + innerScrollFrame.size.width,mainScrollView.bounds.size.height);
[self.view addSubview:mainScrollView];
我設置了滾動,它與滾動視圖的寬度,運作良好,但圖像沒有出現在it.Only問題使用ALAssetLibrary Code.the else條件時,工作正常,與多個images.But不符合的contentSize ASSETLibrary條件。 –
請通過編輯的代碼,讓我知道是什麼問題。 –
您是否在說:「如果您使用ALAssetLibrary,並且所有圖像都以其他情況顯示,只顯示最後一張圖像?」 – Dev