如何在didSelectRowAtIndexPath中更改单元格的背景图像

Question

I want to change the background image of the cell when cell it is selected.

I have tried with this syntax:

- (UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath{
 //for adding image
 cell.ImgCateg.image=[UIImage imageNamed:[ImgArr objectAtIndex:indexPath.row]];
     ...
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    CRHomeCategCell *cell = (CRHomeCategCell*)[_tblCateg cellForRowAtIndexPath:indexPath];
    cell.ImgCateg.image = [UIImage imageNamed:@"DefaultBg.png"];
}

this changes image in the foreground not in the background.

Please help and thanks in advance.

Answer 1

You can set UITableviewCell's property setSelectedBackgroundView in cellForRowAtIndexPath method.

like ,

- (UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath{
{
....
UIImageView *normalCellBG = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, cell.frame.size.width, cell.frame.size.height)];

[normalCellBG setImage:[UIImage imageNamed:@"box_nonselected.png"]];//Set Image for Normal
[normalCellBG setBackgroundColor:[UIColor clearColor]];
[cell setBackgroundView:normalCellBG];


UIImageView *selecetedCellBG = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, cell.frame.size.width, cell.frame.size.height)];
[selecetedCellBG setImage:[UIImage imageNamed:@"box_selected.png"]];//Set Name for selected Cell
[selecetedCellBG setBackgroundColor:[UIColor clearColor]];
[cell setSelectedBackgroundView:selecetedCellBG ];

}

look this SO question.

Answer 2

You can do this on following way:

UIImage *cellImage = [UIImage imageNamed:@"myimage.png"];
UIImageView *cellView = [[UIImageView alloc] initWithImage:cellImage];
cellView.contentMode = UIContentViewModeScaleToFill; 
cell.backgroundView = cellView;