[英]UIImageview not showing after being added to another subview which is UIScrollview
我只在代碼中創建視圖控制器,沒有.xib或情節提要。 我在視圖中添加了許多其他子視圖,這些子視圖是在方法(void)loadView中添加的,它們的框架是在(id)init方法中初始化的,如下所示
-(id)init{
bottomClinkRect = CGRectMake(playersBoardRect.origin.x + (playersBoardWidth * 0.320),
playersBoardRect.origin.y + playersBoardHeight - playerBottomImageRect.size.height - (playersBoardHeight * 0.038),
playersBoardWidth * 0.680,
playersBoardHeight * 0.038);
}
- (void)loadView {
bottomClink = [[UIScrollView alloc]initWithFrame:bottomClinkRect];
[bottomClink setScrollEnabled:YES];
bottomClink.contentSize = CGSizeMake(bottomClink.frame.size.height,bottomClink.frame.size.height);
[contentView addSubview:bottomClink];
}
我創建了一個空的scrollview,然后根據屏幕上的用戶操作,我嘗試使用以下方法每次向滾動視圖中添加一個imageView:
-(void)reloadCollections:(NSNotification *)notification
{
UIImage *latestPieceCaptured = [gameController capturedBlackPiecesImages].lastObject;
[whitePlayerCaptures addObject:latestPieceCaptured];
NSInteger newNumberOfViews = whitePlayerCaptures.count;
CGFloat xOrigin = (newNumberOfViews - 1) * bottomClink.frame.size.height;
CGRect imageRect = CGRectMake(bottomClink.frame.origin.x + xOrigin,
bottomClink.frame.origin.y,
bottomClink.frame.size.height, //the width is taken from the height
bottomClink.frame.size.height); // the height
UIImageView *image = [[UIImageView alloc] initWithFrame:imageRect];
image.backgroundColor = [UIColor blackColor];
image.image = latestPieceCaptured;
image.contentMode = UIViewContentModeScaleAspectFit;
//set the scroll view content size
bottomClink.contentSize = CGSizeMake(bottomClink.frame.size.height * newNumberOfViews,
bottomClink.frame.size.height);
[bottomClink addSubview:image];
}
我的問題是將scrollview
view
添加到了主view
但是沒有顯示imageview
。
我已經調試了它,並且scrollview
已添加了子視圖,並且它們具有幀大小和全部大小,但未顯示在屏幕上。 我嘗試了很多變化,但到目前為止沒有任何效果。
在此先感謝您的任何鏈接或建議。
這對我行得通:
- (void)addImagesToScrollView {
[self.scrollViewOutlet setAlwaysBounceVertical:NO];
_scrollViewOutlet.delegate = self;
for (int i = 0; i < thumbnailPreview.count; i++) {
CGFloat xOrigin = i * self.scrollViewOutlet.frame.size.width;
UIImageView *image = [[UIImageView alloc] initWithFrame:
CGRectMake(xOrigin, 0,
self.scrollViewOutlet.frame.size.width,
self.scrollViewOutlet.frame.size.height)];
image.image = [UIImage imageNamed: [thumbnailPreview objectAtIndex:i]];
image.contentMode = UIViewContentModeScaleAspectFill;
image.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin;
image.clipsToBounds = YES;
[self.scrollViewOutlet addSubview:image];
}
//set the scroll view content size
self.scrollViewOutlet.contentSize = CGSizeMake(self.scrollViewOutlet.frame.size.width *
thumbnailPreview.count,
self.scrollViewOutlet.frame.size.height);
}
並打電話給
- (void)viewDidAppear:(BOOL)animated
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