3
UITableView이 CoreData을 통해 채워지고 이상한 것으로 나타났습니다. 나는 약 20 줄 정도의 UITable을 가지고 있는데, 테이블을 아래로 스크롤하여 다시 올리면 셀의 레이블이 기존 텍스트의 맨 위에 쓰여지고 내려갈 때마다 계속해서 작업을 수행합니다. CellForRowAtIndexPath에 대한 내 코드는 다음과 같습니다Objective-C : 위아래로 스크롤 할 때마다 UITableView 셀이 쓰여집니다.
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
//Some constants ---
const NSInteger TOP_LABEL_TAG = 1001;
const NSInteger BOTTOM_LABEL_TAG = 1002;
UILabel *topLabel;
UILabel *bottomLabel;
const CGFloat LABEL_HEIGHT = 20;
//CGRect Imageframe = CGRectMake(7, 5, 35, 35);
//----
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
cell.textLabel.font = [UIFont boldSystemFontOfSize:12];
}
//custom implementation of UIView for lazy loading of image
//LazyUIImageView *lazy = [[LazyUIImageView alloc] initWithFrame:Imageframe];
//[cell addSubview:lazy];
Post *post = [fetchedResultsController objectAtIndexPath:indexPath];
NSSet *medias = post.PostMedia;
Media *media = [medias anyObject];
NSSet *thumbs = media.MediaThumb;
Thumb *thumb = [thumbs anyObject];
UIImage *img = thumb.url;
if (img)
cell.imageView.image = img;
else
cell.imageView.image = post.authorpic;
//The creation of the top label
topLabel =
[[[UILabel alloc]
initWithFrame:
CGRectMake(
35 + 2.0 * cell.indentationWidth,
0.5 * (tableView.rowHeight - 2 * LABEL_HEIGHT),
tableView.bounds.size.width -
45 - 4.0 * cell.indentationWidth
- 35,
LABEL_HEIGHT)]
autorelease];
[cell.contentView addSubview:topLabel];
topLabel.tag = TOP_LABEL_TAG;
topLabel.backgroundColor = [UIColor clearColor];
topLabel.textColor = [UIColor colorWithRed:0.25 green:0.0 blue:0.0 alpha:1.0];
topLabel.highlightedTextColor = [UIColor colorWithRed:1.0 green:1.0 blue:0.9 alpha:1.0];
topLabel.font = [UIFont systemFontOfSize:[UIFont labelFontSize]];
//---------------------------------
//The creation of the bottom label
bottomLabel =
[[[UILabel alloc]
initWithFrame:
CGRectMake(
35 + 2.0 * cell.indentationWidth,
0.5 * (tableView.rowHeight - 2 * LABEL_HEIGHT) + LABEL_HEIGHT,
tableView.bounds.size.width -
35 - 4.0 * cell.indentationWidth
- 35,
LABEL_HEIGHT)]
autorelease];
[cell.contentView addSubview:bottomLabel];
//--------------------------------
//
// Configure the properties for the text that are the same on every row
//
bottomLabel.tag = BOTTOM_LABEL_TAG;
bottomLabel.backgroundColor = [UIColor clearColor];
bottomLabel.textColor = [UIColor colorWithRed:0.25 green:0.0 blue:0.0 alpha:1.0];
bottomLabel.highlightedTextColor = [UIColor colorWithRed:1.0 green:1.0 blue:0.9 alpha:1.0];
bottomLabel.font = [UIFont systemFontOfSize:[UIFont labelFontSize] - 2];
//
// Create a background image view.
//
cell.backgroundView =
[[[UIImageView alloc] init] autorelease];
cell.selectedBackgroundView =
[[[UIImageView alloc] init] autorelease];;
topLabel.text = post.title;
bottomLabel.text = @"put something here";
//
// Set the background and selected background images for the text.
// Since we will round the corners at the top and bottom of sections, we
// need to conditionally choose the images based on the row index and the
// number of rows in the section.
//
UIImage *rowBackground;
UIImage *selectionBackground;
NSInteger sectionRows = [tableView numberOfRowsInSection:[indexPath section]];
NSInteger row = [indexPath row];
if (row == 0 && row == sectionRows - 1) //all
{
rowBackground = [UIImage imageNamed:@"topAndBottomRow.png"];
selectionBackground = [UIImage imageNamed:@"topAndBottomRowSelected.png"];
}
else if (row == 0) //top
{
rowBackground = [UIImage imageNamed:@"topRow.png"];
selectionBackground = [UIImage imageNamed:@"topRowSelected.png"];
}
else if (row == sectionRows - 1) //bottom
{
rowBackground = [UIImage imageNamed:@"bottomRow.png"];
selectionBackground = [UIImage imageNamed:@"bottomRowSelected.png"];
}
else //middle
{
rowBackground = [UIImage imageNamed:@"middleRow.png"];
selectionBackground = [UIImage imageNamed:@"middleRowSelected.png"];
}
((UIImageView *)cell.backgroundView).image = rowBackground;
((UIImageView *)cell.selectedBackgroundView).image = selectionBackground;
//[lazy release];
return cell;
} 사전에 도움을
감사합니다!
고맙지 만, 내가 어디에서 이걸 할까? cell.subviews = nil합니까? 또는 whats 베팅 방법 – Doz
jan의 코드는 기존 서브 뷰를 제거합니다. if 셀의 else 절이 nil 문이므로 위 코드에 추가합니다. 나는 위의/if 논리로 위의 내 대답을 편집했습니다. –
고마워, 너희 둘다 굉장 했어. 그리고 더 중요하게는 셀 == nil 개념을 조금 더 이해할 수있었습니다. – Doz