How to set a Tableview cell alpha value - ios

Question

I have a UITableView. And i have 4 cell in that Tableview.
My Tableview alpha value is 0.8.
But my requirement is i want to first 3 cell will be alpha value 0.8 and 4th cell will be 1.0 alpha value.
So how can i set these alpha value according to cell?
Please help me. I am facing this prob from last 2 days.
This is my code:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = nil;
NSString *simpleTableIdentifier = [NSString stringWithFormat:#"%#%d",#"Cell",indexPath.row];
if (indexPath.row == 0)
{
cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
cell.alpha = 0.8;
}
}
else if (indexPath.row == 1)
{
cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
cell.alpha = 0.8;
}
}
else if(indexPath.row == 2)
{
cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
cell.alpha = 0.8;
}
}
else if (indexPath.row == 3)
{
cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
cell.alpha = 1.0;
}
}
return cell;
}

Answer 1

I hope this single line of code solve your issue
cell.contentView.alpha = 0.8

Answer 2

How about setting the cell background color with an alpha value?
cell.backgroundColor = [UIColor colorWithRed:1 green:0 blue:0 alpha:0.8];

Answer 3

clearColor's grayscale and alpha = 0, so no matter what alpha you set, it won`t work, you have to have an actual colour so alpha to have visible efects

Answer 4

You should change the cell in this delegate method
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
cell.alpha = indexPath.row < 3 ? 0.8 : 1.0;
}

Answer 5

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = nil;
NSString *simpleTableIdentifier = [NSString stringWithFormat:#"Cell"];
cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
UIView *lView_ = [[UIView alloc] init];
lView_ = [[UIView alloc] init];
lView_.backgroundColor = [UIColor colorWithRed:255.0 green:255.0 blue:255.0 alpha:0.6];
cell.backgroundView = lView_;
}
UIView *backview = (UIView *)cell.backgroundView;
if (indexPath.row == 3)
{
backview.backgroundColor = [UIColor colorWithRed:255.0 green:255.0 blue:255.0 alpha:1];
}
else
{
backview.backgroundColor = [UIColor colorWithRed:255.0 green:255.0 blue:255.0 alpha:0.2];
}
return cell;
}
Use the above and check wheather it is working or not.I hope this reolve your issue.