我搜索了很多地方但找不到答案,所以我决定设置自己的问题。
我用来自 JSON 的数据填充 UITableView。我的数据结构是这样的:
NSMutableArray* studentList = [(NSDictionary*)[responseString JSONValue] objectForKey:@"StudentList"];
JSON:
{
"StudentList":[
{
"StudentID":"08DH11039",
"StudentFirstName":"Nguyen Lam",
"StudentLastName":"Binhh"
},
{
"StudentID":"08DH11163",
"StudentFirstName":"Nguyen Minh",
"StudentLastName":"Duc"
},
{
"StudentID":"08DH11038",
"StudentFirstName":"Nguyen Bao",
"StudentLastName":"Khuyen"
},
{
"StudentID":"08DH11037",
"StudentFirstName":"Nguyen Tran Duy",
"StudentLastName":"Phuong"
}
]
}
向 UITableView 添加数据:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
NSDictionary *student = [studentList objectAtIndex:indexPath.row];
cell.textLabel.text = [NSString stringWithFormat:@"%d. %@ %@", indexPath.row+1, [student objectForKey:@"StudentFirstName"], [student objectForKey:@"StudentLastName"]];
cell.textLabel.font = [UIFont fontWithName:@"Helvetica" size:15];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
我还添加了一个 UISearchBar 但它不起作用:
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
[searchData removeAllObjects];
NSArray *student;
for(student in studentListCopy) //take the n group (eg. group1, group2, group3)
{
NSLog(@"%@", student);
NSMutableArray *newGroup = [[NSMutableArray alloc] init];
NSString *element;
for(element in student)
NSRange range = [element rangeOfString:searchString
options:NSCaseInsensitiveSearch];
if (range.length > 0) { //if the substring match
[newGroup addObject:element]; //add the element to group
}
}
if ([newGroup count] > 0) {
[searchData addObject:newGroup];
}
}
return YES;
}
请帮我让它工作。我想搜索在 TableView 中显示的 FirstName 或 LastName。
我是 iOS 编程新手。非常感谢你。