uitableview单元格突出显示

Question

I have a table view in which each cell contains a button. I dont use the didSelectRowAtIndexPath delegate but my custom method for the button action. I want that on clicking the button inside each cell, that cell should be highlighted or change colour and return to its normal state(colour) when the button in some other cell is clicked(making this cell highlighted).My button action method is:

- (void)SelectButtonTapped:(UIButton *)button
{


    self.tabBarController.tabBar.userInteractionEnabled = YES;

    AppDelegate *proDel = [[UIApplication sharedApplication]delegate];

    UITableViewCell *cell = (UITableViewCell *)button.superview.superview;

    //MyCustomCell *cell = (MyCustomCell *)button.superview.superview;

     NSIndexPath *indexPath = [homeTable indexPathForCell:cell];


     //cell.backgroundColor = [UIColor lightGrayColor];


    //[homeTable setNeedsDisplayInRect:[homeTable rectForRowAtIndexPath:indexPath]];


    DetailViewController *objDetail=[[DetailViewController alloc] init];

    Home *tempSearchObj=(Home *)[profileArray objectAtIndex:indexPath.row];
    objDetail.firstName=tempSearchObj.userName;


    objDetail.userImageUrl=tempSearchObj.imageUrl;

    objDetail.passedProfileID = tempSearchObj.profileID;

    plsSelectLabel.text = [NSString stringWithFormat:@"%@",objDetail.firstName];

    proDel.globalName = plsSelectLabel.text;

    proDel.globalProfileId = objDetail.passedProfileID;


}

But this doesn't seem to work. Any help would be appreciated!!

Answer 1

Set the cell selection style in cellForRowAtIndexPath as :

if (cell == nil) 
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];

        [cell setSelectionStyle:UITableViewCellSelectionStyleBlue];
    }

And :

yourButton.tag = indexPath.row;

Add the following line in your method to highlight the cell :

UIButton *clickButton = (UIButton *)sender;

int addButtonIndex = clickButton.tag;

NSIndexPath *indexPathHighlight = [NSIndexPath indexPathForRow:addButtonIndex inSection:0];

UITableViewCell *newCell = [yourTable cellForRowAtIndexPath:indexPathHighlight];

[newCell setSelected:YES animated:YES];

Unselect previous cell :

NSIndexPath *previousIndexPathHighlighted = [NSIndexPath indexPathForRow:previousTag inSection:0];

UITableViewCell *previousCell = [yourTable cellForRowAtIndexPath:previousIndexPathHighlighted];

[previousCell setSelected:NO animated:YES];

previousTag = clickButton.tag;

Answer 2

The proper way to go about this is that on your cellForRowAtIndex: method you have a way of knowing if your cell needs to look highlighted or not. Then, after clicking on a button and configuring whatever you need to do, you should simply do

NSArray *indexes = [NSArray arrayWithObject:[NSIndexPath indexPathForRow:0 inSection:1]];
[self.tableView reloadRowsAtIndexPaths:indexes withRowAnimation:UITableViewRowAnimationNone];

The other way to go about this, is to access the cell and change it directly. But not with button.superview.superview , but rather

UITableViewCell *cell = [self.tableView cellForRowAtIndex:[NSIndexPath indexPathForRow:0 inSection:1]];

Answer 3

I think the best way to do it is to make a

NSInteger selectedCellIndex;

---

Set the tags of your buttons in the cellForRowAtIndex method

button.tag = indexPath.row

---

Set the selectedCellIndex when you click the button and reload the table

selectedCellIndex = button.tag;
[self.tableView reloadData];

---

Then in the cellForRowAtIndex method check if the index is the same as the selectedCellIndex and add a different color to the cell.

if( indexPath.row == selectedCellIndex ){
    //set different colors
}

Remember to do this outside the if( cell == nil ) check, otherwise it wouldn't work.