Question

我有一个带有自定义单元格的TableView，选中时会显示所选的单选按钮（图像）。一切正常，但是当我开始滚动时，单元格显示不正确（未选中的单选按钮（图像）放在“选定”单元格中）。有谁知道如何解决这个问题？

请查看我的代码

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *cellidentifier = @"ProfileCellReuseIde";

    ProfileTableViewCell *cell = (ProfileTableViewCell *)[tableView dequeueReusableCellWithIdentifier:cellidentifier forIndexPath:indexPath];
    cell.selectionStyle  = UITableViewCellSelectionStyleNone;
NSString *tempTitle = [tempArr objectAtIndex:indexPath.row];
            [cell.titleLblOutlet setText:tempTitle];
            cell.radioBtnImgVwOutlet.image = [UIImage imageNamed:@"radio_inactive.png"];
            if (indexPath == self.selectedCellIndexPath) {
                 cell.radioBtnImgVwOutlet.image = [UIImage imageNamed:@"radio_active.png"];
             }
    return cell;
}

- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    /*
     This works nicely but the only problem I found with this approach is that the user can deselect a row by tapping on it, leaving nothing selected. Simply add the following to prevent this: -(NSIndexPath *)tableView:(UITableView *)tableView willDeselectRowAtIndexPath:(NSIndexPath *)indexPath { return nil; }
     */
    for ( NSIndexPath* selectedIndexPath in tableView.indexPathsForSelectedRows ) {
        if ( selectedIndexPath.section == indexPath.section ) {
            [tableView deselectRowAtIndexPath:selectedIndexPath animated:NO] ;

            ProfileTableViewCell *cell = [tableView cellForRowAtIndexPath:selectedIndexPath];
            cell.radioBtnImgVwOutlet.image = [UIImage imageNamed:@"radio_inactive.png"];

        }

    }
    return indexPath ;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

            if (indexPath != self.selectedCellIndexPath) {
                ProfileTableViewCell *tempPreviousCell = [tableView cellForRowAtIndexPath:self.selectedCellIndexPath];
                tempPreviousCell.radioBtnImgVwOutlet.image = [UIImage imageNamed:@"radio_inactive.png"];

                self.selectedCellIndexPath = [tableView indexPathForSelectedRow];

                ProfileTableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
                cell.radioBtnImgVwOutlet.image = [UIImage imageNamed:@"radio_active.png"];
            }
}

先谢谢。

Answer 1

在EXECUTE 'UPDATE algorithms.km_cluster_centres_' || quote_literal(k) ||' SET latitude = ($1).latitude, longitude = ($1).longitude, geom = ST_Transform(ST_SetSRID(ST_MakePoint(($1).longitude,($1).latitude), 4326),3435) WHERE id=' || quote_literal( k_count ) USING o_random;路径中更改if条件。

cellForRowAtIndexPath

滚动UITableview会更改图像，UITableview滚动问题

1 个答案: