동동이의 블러그

없어서 만듬...

공지사항같은거 보여줄때 자주 쓸듯

ScrollTextBlock.zip

이건 반대로인데 실제 컨트롤로써 메모리 관리면에서 이게 더 나음

UserControls.zip

TableView를 이용해서 SNS를 개발 하기위해 선두지점에 있는 Facebook 앱을 보았다.

이렇게 Label이 길수록 TableView cell row가 길게 나왔다.

이렇게 할려면 글을 길이를 계산해서 row의 높이를 계산해야 한다.

#define FONT_SIZE 14.0f

#define CELL_CONTENT_WIDTH 320.0f

#define CELL_CONTENT_MARGIN 10.0f

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath;

{

NSString *text = [items objectAtIndex:[indexPath row]];

CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);

CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];

CGFloat height = MAX(size.height, 44.0f);

return height + (CELL_CONTENT_MARGIN * 2);

}

- (UITableViewCell *)tableView:(UITableView *)tv cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

UITableViewCell *cell;

UILabel *label = nil;

cell = [tv dequeueReusableCellWithIdentifier:@"Cell"];

if (cell == nil)

{

cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"Cell"] autorelease];

label = [[UILabel alloc] initWithFrame:CGRectZero];

[label setLineBreakMode:UILineBreakModeWordWrap];

[label setMinimumFontSize:FONT_SIZE];

[label setNumberOfLines:0];

[label setFont:[UIFont systemFontOfSize:FONT_SIZE]];

[label setTag:1];

// [[label layer] setBorderWidth:2.0f];

[[cell contentView] addSubview:label];

}

NSString *text = [items objectAtIndex:[indexPath row]];

CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);

CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];

if (!label)

label = (UILabel*)[cell viewWithTag:1];

[label setText:text];

[label setFrame:CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN, CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), MAX(size.height, 44.0f))];

return cell;

}

[label setFrame:CGRectMake(CELL_CONTENT_MARGIN, CELL_CONTENT_MARGIN, CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), MAX(size.height, 44.0f))];

이렇게 하면

이렇게 다이나믹하게 row의 높이가 변한다.

참고 : http://www.cimgf.com/2009/09/23/uitableviewcell-dynamic-height/

하지만 나는 코드상에서 label을 만들어서 하지 않고 ib에서 만들어서 적용할려고 했다. 그래야 쉽지 ㅋㅋ

내가 응용한 코드는 다음과 같다.

//table height를 label 크기에 따라 변환

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath;

{

HugeBoardData* hd = [boardData objectAtIndex:indexPath.row];

CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);

CGSize size = [hd.title sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];

CGFloat height = MAX(size.height, 44.0f);

return height + (CELL_CONTENT_MARGIN * 2);

}

size에 보면 hd.title이 있다. title의 크기를 기준으로 높이를 계산해서 반환한다.

그리고 크기를 내크기에 맞게 변환했다.

#define FONT_SIZE 14.0f

#define CELL_CONTENT_WIDTH 140.0f

#define CELL_CONTENT_MARGIN 10.0f

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {  

HugeBoardCell *cell = (HugeBoardCell *)[tableView dequeueReusableCellWithIdentifier:HugeBoardCellIdentifier];

if (cell == nil) {   

cell = [HugeBoardCell cellWithNib];

[cell.titleLabel setMinimumFontSize:FONT_SIZE];

[cell.titleLabel setLineBreakMode:UILineBreakModeWordWrap];

[cell.titleLabel setNumberOfLines:0];

[cell.titleLabel setFont:[UIFont systemFontOfSize:FONT_SIZE]];

[cell.titleLabel setTag:1];

}

HugeBoardData* hd = [boardData objectAtIndex:indexPath.row];

CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);

CGSize size = [hd.title sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];

cell.titleLabel.text = [NSString stringWithFormat:@"%@", hd.title];

[cell.titleLabel setFrame:CGRectMake(CELL_CONTENT_MARGIN+40, CELL_CONTENT_MARGIN, CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), MAX(size.height, 44.0f))];

cell.idxLabel.text= [NSString stringWithFormat:@"%@ : ", hd.idx];

return cell;

}