我正在尝试在表格上实现索引，因为我使用以下方法索引出现在右侧，但它不起作用代码如下
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 2;
}
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
NSArray *toBeReturned = [NSArray arrayWithArray:
[@"A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z|#"
componentsSeparatedByString:@"|"]];
return toBeReturned;
}
- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index {
int foundIndex = 0;
for (int i = 0; i< [mainArray count]; i++) {
// Here you return the name i.e. Honda,Mazda
// and match the title for first letter of name
// and move to that row corresponding to that indexpath as below
NSString *letterString = [[[mainArray valueForKey:@"name"] objectAtIndex:i] substringToIndex:1];
NSLog(@"letterString%@",letterString);
NSLog(@"title%@",title);
if ([[letterString uppercaseString ] compare:title] == NSOrderedDescending){
break;
foundIndex++; }
if(foundIndex > mainArray.count)
foundIndex = mainArray.count;
[table scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:foundIndex inSection:0] atScrollPosition:UITableViewScrollPositionTop animated:YES];
return 1;
}
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
return 120;
}
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
//—set the text to display for the cell—
NSLog(@"%d",mainArray.count);
NSLog(@"%@",mainArray);
UIImageView *selectionView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 768, 120)];
UIImage *image = [UIImage imageNamed:@"default.png"];
UIImageView* blockView = [[UIImageView alloc] initWithImage:image];
blockView.layer.cornerRadius = 4;
blockView.layer.masksToBounds = YES;
blockView.layer.borderWidth = 2;
blockView.layer.borderColor = [UIColor blackColor].CGColor;
blockView.frame = CGRectMake(5, 5, 110, 110);
// title isKindOfClass:[NSNull class]])
//NSLog(@"%@",[[mainArray valueForKey:@"image"] objectAtIndex:[indexPath row]]);
id obj = [[mainArray valueForKey:@"image"] objectAtIndex:[indexPath row]];
if ([obj isKindOfClass:[NSString class]])
{
[selectionView addSubview:blockView];
}
else {
UIImage *contactImage = [[UIImage alloc]init];
contactImage = [[mainArray valueForKey:@"image"] objectAtIndex:[indexPath row]];
// NSLog(@" array%@",[[mainArray valueForKey:@"image"] objectAtIndex:[indexPath row]]);
NSLog(@" image%@",contactImage);
UIImageView *blockView = [[UIImageView alloc] initWithImage:contactImage];
blockView.frame = CGRectMake(5, 5, 110, 110);
blockView.layer.cornerRadius = 4;
blockView.layer.masksToBounds = YES;
blockView.layer.borderWidth = 2;
blockView.layer.borderColor = [UIColor blackColor].CGColor;
[selectionView addSubview:blockView];
}
NSLog(@" name :%@",[[mainArray valueForKey:@"name"] objectAtIndex:[indexPath row]]);
if ([[[mainArray valueForKey:@"name"] objectAtIndex:[indexPath row]] isEqualToString:@"(null)"]) {
UILabel *name = [[UILabel alloc]initWithFrame:CGRectMake(130, 10, 310, 55)];
name.text =@"Name Not Available";
[name setBackgroundColor:[UIColor clearColor]];
[ name setFont:[UIFont fontWithName:@"Arial-BoldMT" size:30]];
name.textColor = [UIColor whiteColor];
[selectionView addSubview:name];
}
else{
UILabel *name = [[UILabel alloc]initWithFrame:CGRectMake(130, 10, 310, 55)];
name.text =[[mainArray valueForKey:@"name"] objectAtIndex:[indexPath row]];
[name setBackgroundColor:[UIColor clearColor]];
[ name setFont:[UIFont fontWithName:@"Arial-BoldMT" size:30]];
name.textColor = [UIColor whiteColor];
[selectionView addSubview:name];
}
if ([[[mainArray valueForKey:@"phone"] objectAtIndex:[indexPath row]] isEqualToString:@"Add Number"]) {
UILabel *phone = [[UILabel alloc]initWithFrame:CGRectMake(130, 70, 300, 50)];
phone.text =@"Not Available";
[phone setBackgroundColor:[UIColor clearColor]];
[ phone setFont:[UIFont fontWithName:@"Arial-BoldMT" size:25]];
phone.textColor = [UIColor whiteColor];
[selectionView addSubview:phone];
}
else{
UILabel *phone = [[UILabel alloc]initWithFrame:CGRectMake(130, 70, 300, 50)];
phone.text =[[mainArray valueForKey:@"phone"] objectAtIndex:[indexPath row]];
[phone setBackgroundColor:[UIColor clearColor]];
[ phone setFont:[UIFont fontWithName:@"Arial-BoldMT" size:25]];
phone.textColor = [UIColor whiteColor];
[selectionView addSubview:phone];
}
if ([[[mainArray valueForKey:@"email"] objectAtIndex:[indexPath row]] isEqualToString:@"Add Email"]) {
UILabel *email = [[UILabel alloc]initWithFrame:CGRectMake(420, 40, 350, 50)];
email.text =@"Email Id Not Available";
[email setBackgroundColor:[UIColor clearColor]];
[ email setFont:[UIFont fontWithName:@"Arial-BoldMT" size:20]];
email.textColor = [UIColor whiteColor];
[selectionView addSubview:email];
}
else{
UILabel *email = [[UILabel alloc]initWithFrame:CGRectMake(420, 40, 350, 50)];
email.text =[[mainArray valueForKey:@"email"] objectAtIndex:[indexPath row]];
[email setBackgroundColor:[UIColor clearColor]];
[ email setFont:[UIFont fontWithName:@"Arial-BoldMT" size:20]];
email.textColor = [UIColor whiteColor];
[selectionView addSubview:email];
}
[[cell contentView] addSubview:selectionView];
return cell;
}
当我单击任何索引而不是正确的索引时，我面临的问题是它到达表的顶部