This sample code shows how we can create uitableviewcell height dynamically based on the text it consists.
Let assume we have UILabel in cell which contains some text, and code below creates the appropriate cell in tableview depending on the label size :
1. Lets define some constants for the program:
#define FONT_SIZE 14.0f
#define CELL_CONTENT_WIDTH 305.0f
#define CELL_CONTENT_MARGIN 8.0f
#define CELL_CONTENT_WIDTH 305.0f
#define CELL_CONTENT_MARGIN 8.0f
2. Return the height of each cell depending on its label size :
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath;
{
{
NSString *text =@"Read your text for each cell here (from Array or Dictionary)";
// calculating the size of the text/string
CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
// Calculating the height of cell
CGFloat height = MAX(size.height, 44.0f);
return height + (CELL_CONTENT_MARGIN * 2);
CGFloat height = MAX(size.height, 44.0f);
return height + (CELL_CONTENT_MARGIN * 2);
}
3. Now lets create cell having UILabel init:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] ;
}
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] ;
}
// Below two line code will insure that there will be no overlapping/blurr of custom views created inside cell
for (UIView * view in cell.contentView.subviews) {
[view removeFromSuperview];
}
for (UIView * view in cell.contentView.subviews) {
[view removeFromSuperview];
}
NSString *text = @"Read your text for each cell here (from Array or Dictionary)";
UILabel *descriptionLabel = [[UILabel alloc] initWithFrame: CGRectMake(10, 8, 278, 40)];
UILabel *descriptionLabel = [[UILabel alloc] initWithFrame: CGRectMake(10, 8, 278, 40)];
// 40 choose the height of label double of normal label size
descriptionLabel.adjustsFontSizeToFitWidth = NO;
descriptionLabel.text = text;
[cell.contentView addSubview:descriptionLabel];
[descriptionLabel setNumberOfLines:0];
CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
[descriptionLabel setFrame:CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN, CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), MAX(size.height, 44.0f))];
descriptionLabel.text = text;
[cell.contentView addSubview:descriptionLabel];
[descriptionLabel setNumberOfLines:0];
CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];
[descriptionLabel setFrame:CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN, CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), MAX(size.height, 44.0f))];
return cell;
}
}
'iOS' 카테고리의 다른 글
| PHP - cURL 비동기 통신 (0) | 2013.12.01 |
|---|---|
| apple push notification 쉽고 간단하게 구축하는 easy apns (0) | 2013.07.10 |
| 앱 정보 가져오기 (앱이름, 버전) (0) | 2013.06.19 |
| 스토리보드 커스텀 셀 (공개) (0) | 2013.06.12 |
| 유니코드 출력 (0) | 2013.02.01 |
