ios - UITableView和UISegmentedControl

Question

我是iPhone开发的新手。我有一个带有三个Section的UITableView，每个Section有三行。我有一个带有三个索引的UISegmentedControl。最初隐​​藏了tableview。当我选择segmentIndex的任何索引然后显示带有三个部分的tableview时。
但我的问题是，当我选择分段控件的索引时，其仅在一个部分中显示tableView的内容而其他两个部分则隐藏在tableView中。如何执行请回答
这是我的代码

#import "DetailViewController.h"


@interface DetailViewController ()

@end

@implementation DetailViewController

@synthesize tblView;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
    // Custom initialization
    }
    return self;
}


- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.

    //Customize tableview
    tblView = [[UITableView alloc] init];
    firstName = [NSArray arrayWithObjects:@"Parth",@"Bhadresh",@"Marshal", nil];
    middleName = [NSArray      arrayWithObjects:@"Dipakbhai",@"Dineshbhai",@"Mansukhbhai",nil];
    lastName = [NSArray arrayWithObjects:@"Patel",@"Laiya",@"Kaneria", nil];
    tblView.delegate = self;
    tblView.dataSource = self;
}

-(void)viewWillAppear:(BOOL)animated
{
    sgmtControl.frame = CGRectMake(17, 180, 285, 44);    
    tblView.frame = CGRectMake(0, 0, 320, 364);
    tblView.hidden = YES;
    [self.view addSubview:tblView];
}
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 3;
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    switch (section)
    {
        case 0:
            return 3;
            break;
        case 1:
            return 3;
            break;
        case 2:
            return 3;
            break;
    }
    return 0;
}

-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection: (NSInteger)section
{
    switch (section)
    {
        case 0:
            return @"FirstName";
            break;
        case 1:
            return @"MiddleName";
            break;
        case 2:
            return @"LastName";
            break;
    }
    return nil;
}

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

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:myIdentifier];
    if (cell == nil)
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:myIdentifier];
    }

    switch (indexPath.section)
    {
        case 0:
            cell.textLabel.text =[firstName objectAtIndex:indexPath.row];
            break;
        case 1:
            cell.textLabel.text = [middleName objectAtIndex:indexPath.row];
            break;
        case 2:
            cell.textLabel.text = [lastName objectAtIndex:indexPath.row];
            break;
    }
    return cell;
}
-(IBAction)changeSegement:(id)sender
{
    if(sgmtControl.selectedSegmentIndex == 0)
    {
        tblView.hidden = NO;
    }
    else if (sgmtControl.selectedSegmentIndex == 1)
    {
        tblView.hidden = NO;
    }
    else if (sgmtControl.selectedSegmentIndex == 2)
    {
        tblView.hidden = NO;
    }
}

Answer 1

这样吧

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{

    switch (sgmtControl.selectedSegmentIndex)
    {
        case 0:
            return [firstName count];
            break;
        case 1:
            return [middleName count];
            break;
        case 2:
            return [lastName count];
            break;
    }
    return 0;
}

-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection: (NSInteger)section
{
    switch (sgmtControl.selectedSegmentIndex)
    {
        case 0:
            return @"FirstName";
            break;
        case 1:
            return @"MiddleName";
            break;
        case 2:
            return @"LastName";
            break;
    }
}

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

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:myIdentifier];
    if (cell == nil)
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:myIdentifier];
    }

    switch (sgmtControl.selectedSegmentIndex)
    {
        case 0:
            cell.textLabel.text =[firstName objectAtIndex:indexPath.row];
            break;
        case 1:
            cell.textLabel.text = [middleName objectAtIndex:indexPath.row];
            break;
        case 2:
            cell.textLabel.text = [lastName objectAtIndex:indexPath.row];
            break;
    }
    return cell;
}
-(IBAction)changeSegement:(id)sender
{
    if(sgmtControl.selectedSegmentIndex == 0)
    {
        tblView.hidden = NO;
    }
    else if (sgmtControl.selectedSegmentIndex == 1)
    {
        tblView.hidden = NO;
    }
    else if (sgmtControl.selectedSegmentIndex == 2)
    {
        tblView.hidden = NO;
    }
    [tblView reloadData];
}