我有问题,这是我的代码:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UIImageView *tickImg = [[UIImageView alloc]init];
tickImg.frame = CGRectMake(260, 28, 30, 30);
NSInteger rowNum;
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
if(searching)
{
cell.textLabel.text = [copyListOfItems objectAtIndex:indexPath.row];
[cell.imageView setImageWithURL:[NSURL URLWithString:[tempArr objectAtIndex:indexPath.row]]
placeholderImage:[UIImage imageNamed:@"defaultPerson.png"]];
}else
{
for (int i=0; i<[alertArray count]; i++) {
NSString *temp = [NSString stringWithFormat:@"%@",[alertArray objectAtIndex:i]];
if ([[friendsID objectAtIndex:indexPath.row] isEqualToString:temp]) {
rowNum = indexPath.row;
NSLog(@"Row: %d",rowNum);
}
}
if (rowNum == indexPath.row) {
tickImg.image = [UIImage imageNamed:@"tick.png"];
[cell.contentView addSubview:tickImg];
}
[cell.imageView setImageWithURL:[NSURL URLWithString:[friendsImage objectAtIndex:indexPath.row]]
placeholderImage:[UIImage imageNamed:@"defaultPerson.png"]];
cell.textLabel.text = [friendsName objectAtIndex:indexPath.row];
}
return cell;
}
这里我有两个数组,一个是friendsID,另一个是alertArray。我已将friendsID加载到tableview。在alertArray中我有一些ID,当行中的friendsID包含alertArray时,我需要在行中显示勾号。我试过上面的代码,但没有工作。 请分享您的想法。 感谢。
答案 0 :(得分:1)
您好我已经添加了一些代码以及删除了一些代码。
我不知道它是否能完美运行,但我知道如果你阅读这段代码,你肯定会知道出了什么问题。
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
/* not needed here
UIImageView *tickImg = [[UIImageView alloc]init];
tickImg.frame = CGRectMake(260, 28, 30, 30);
NSInteger rowNum;
*/
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
//Here is my code
//removing the tickImg if it is in the super view
UIView *vw = [cell.contentView viewWithTag:99];
if(vw != nil){
[vw removeFromSuperview];
}
//code endds here
if(searching)
{
cell.textLabel.text = [copyListOfItems objectAtIndex:indexPath.row];
[cell.imageView setImageWithURL:[NSURL URLWithString:[tempArr objectAtIndex:indexPath.row]]
placeholderImage:[UIImage imageNamed:@"defaultPerson.png"]];
}else
{
for (int i=0; i<[alertArray count]; i++) {
NSString *temp = [NSString stringWithFormat:@"%@",[alertArray objectAtIndex:i]];
if ([[friendsID objectAtIndex:indexPath.row] isEqualToString:temp]) {
/* this is not needed
rowNum = indexPath.row;
NSLog(@"Row: %d",rowNum);
*/
//Here is my code
UIImageView *tickImg = [[UIImageView alloc]init];
//just giving the tag so that I can get it back when cell is reused. other wise you can use the custom cell and have a reference for this image view
tickImg.tag = 99;
tickImg.frame = CGRectMake(260, 28, 30, 30);
//end of code
tickImg.image = [UIImage imageNamed:@"tick.png"];
[cell.contentView addSubview:tickImg];
[tickImg release]; //if you are not using ARC
break;
//end of code
}
}
/* this is also not needed
if (rowNum == indexPath.row) {
tickImg.image = [UIImage imageNamed:@"tick.png"];
[cell.contentView addSubview:tickImg];
}
*/
[cell.imageView setImageWithURL:[NSURL URLWithString:[friendsImage objectAtIndex:indexPath.row]]
placeholderImage:[UIImage imageNamed:@"defaultPerson.png"]];
cell.textLabel.text = [friendsName objectAtIndex:indexPath.row];
}
return cell;
}