CODEWITHSUNDEEP
objective-cios
satgi
satgi

Reputation: 6353

get UITableViewCell's height after setting height for each UITableViewCell

I set height for each UITableViewCell in

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

I need to get each UITableViewCell's height in

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

because I need to addSubView in different cells.

I've tried to use cell.frame & cell.bounds & cell.contentView.frame, but the height hasn't changed.

Upvotes: 4

Views: 11761

Answers (5)

Ji Hu
Ji Hu

Reputation: 64

As @ilMalvagioDottorProsci says,The value returned by the heightForRowAtIndexPath function do not affect the actual size of the cell.

If you want achieve that each row height is determined by the cell height.I have a trick.

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    id aKey = [self buildCellCacheKey:indexPath];
    UITableViewCell *cell = [self tableView:tableView cellForRowAtIndexPath:indexPath];

    if ([_cellCache objectForKey:aKey]==nil) {
        [_cellCache setObject:cell forKey:aKey];
    }

    return cell.bounds.size.height;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    // for flexible height of table view cell.in this way,the cell height won't be caculate twice.
    id aKey = [self buildCellCacheKey:indexPath];
    UITableViewCell *cacheCell = [_cellCache objectForKey:aKey];
    if (cacheCell) {
        [cacheCell retain];
        [_cellCache removeObjectForKey:aKey];
        LOGDebug(@"return cache cell [%d]",indexPath.row);
        return [cacheCell autorelease];
    }

// here is the code you can config your cell..  
}

Upvotes: -1

Hemang
Hemang

Reputation: 27072

What about UITableViews method, - (CGRect)rectForRowAtIndexPath:(NSIndexPath *)indexPath.

Get the rect like this, 

CGRect cellRect = [tableView rectForRowAtIndexPath:indexPath];

Upvotes: 2

Wagner Sales
Wagner Sales

Reputation: 1558

I solved this way:

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    // create object
    id myObj = [_arrayEvents objectAtIndex:indexPath.row];

    // create static identifier
    static NSString * myIdentifier = @"Cell";

    // create static UITableViewCell
    static UITableViewCell * cell;

    // create cell with object
    cell = [self buildCell:myIdentifier tableView:tableView obj: myObj];

    return cell.contentView.frame.size.height;

}

Upvotes: 2

ᴳᴿᴵᴹᴹ
ᴳᴿᴵᴹᴹ

Reputation: 93

This may be too late, but you can use the delegate method:

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
    CGRect cellSize = cell.frame;
}

Hope it helps anyone, Let me know if I missed out something. :)

Upvotes: 8

il Malvagio Dottor Prosciutto
il Malvagio Dottor Prosciutto

Reputation: 1332

They are different stuffs. In heightForRowAtIndexPath: you tell the UITableView how much vertical space it shoud use to show the corresponding cell, but this don't affect the actual size of the cell! So if you want them to match you have to manually set the dimensions.

If you don't want / need to resize the cell frame you should simply store the height in a property of your custom cell class.

Upvotes: 1

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