UITableView 和 UISegmentedControl答案

【问题标题】：UITableView and UISegmentedControlUITableView 和 UISegmentedControl
【发布时间】：2013-03-06 06:12:02
【问题描述】：

我是 iPhone 开发的新手。我有一个 UITableView 三个部分，每个部分有三行。我有一个带有三个索引的 UISegmentedControl。tableview 最初是隐藏的。当我选择 segmentIndex 的任何索引时，它会显示三个部分的 tableview。但我的问题是，当我选择分段控件的索引时，它会显示只有一个部分的 tableView，而其他两个部分隐藏在 tableView 中。如何做请回答
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;
    }
}

【问题讨论】：

在每个段点击重新加载表格
在每个段中重新放置的表在我的表视图中显示所有三个部分。但我只想显示一个部分，而隐藏其他两个部分。

标签： ios objective-c iphone uitableview uisegmentedcontrol

【解决方案1】：

这样做，

-(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];
}

【讨论】：

【解决方案2】：

对 Mountain Lion 的代码稍作修改，使其更通用并移除开关

@synthesize currentArray;
.
.
.
.

- (void)viewDidLoad
{
      .
      .
      .
      //ALLOCATE currentArray
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return currentArray.count;
}

-(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];
    }

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

【讨论】：

【解决方案3】：

试试这个

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

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
switch (sgmtControl.selectedSegmentIndex)
{
    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 (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;
  }

【讨论】：

【解决方案4】：

我相信我理解您想要做什么，您希望根据选择的按钮段显示不同的表格视图单元格。

您需要让 cellForRowAtIndexPath 检查选择了哪个段并返回正确的单元格集。

当用户更改分段按钮时，有changeSegment：将选定的分段存储在实例变量中。然后让它调用 [self reloadData];

#import "DetailViewController.h"


@interface DetailViewController ()
{
    NSArray *names;
    NSInteger segIndex;
}
@property (nonatomic, strong) NSArray *names;
@property (nonatomic) segIndex;
@end

@implementation DetailViewController

@synthesize tblView;
@synthesize names;
@synthesize segIndex;

- (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];
    self.names = [NSArray arrayWithObjects: [NSArray arrayWithObjects:@"Parth",@"Bhadresh",@"Marshal", nil],
                                            [NSArray arrayWithObjects:@"Dipakbhai",@"Dineshbhai",@"Mansukhbhai",nil],
                                            [NSArray arrayWithObjects:@"Patel",@"Laiya",@"Kaneria", nil],
                  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 [self.names count];
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [[self.names objectAtIndex:section] count];
}

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

    cell.textLabel.text =[[self.names objectAtIndex:self.segIndex] objectAtIndex:indexPath.row];

    return cell;
}
-(IBAction)changeSegement:(id)sender
{
    self.segIndex = sgmtControl.selectedSegmentIndex;
    [self reloadData];
}

【讨论】：

它的小工作第一次选择按钮段，它显示一个部分，另一个被隐藏，但第二次显示两个部分，第三次选择按钮段显示带有三个部分的 tableview 我想要每个时间按钮段被选中，它只显示一个部分，其他两个被隐藏
@parthpatel 不客气。如果这是您在程序中使用的代码，请将此回复标记为您问题的答案。

【解决方案5】：

    //You may get hint from my code
   //UISegmentedControl with TableView using Objective C

  //complete working code

@interface TabTwoScheduleViewController () <UITableViewDelegate ,       UITableViewDataSource>
{
CGRect rect;
NSArray *list;
NSArray *list1;
NSArray *list2;
NSArray *list3;
NSArray *list4;
UITableView *segmentTableView;
}
@end

@implementation TabTwoScheduleViewController

- (void)viewDidLoad {
[super viewDidLoad];

 rect = [[UIScreen mainScreen]bounds];

UIScrollView *scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(10, 10, rect.size.width-20, rect.size.height/10-23)];
scroll.contentSize = CGSizeMake(rect.size.width, rect.size.height * 2);
scroll.showsHorizontalScrollIndicator = YES;
scroll.backgroundColor = [UIColor yellowColor];

NSArray *itemArray = [NSArray arrayWithObjects: @"ONLINE", @"CLASSROOM", @"WEBCASTING", nil];
list = [NSArray     arrayWithObjects:@"list.1",@"list.2",@"list.3",@"list.4",@"list.5", nil];
list1 = [NSArray arrayWithObjects:@"list1.1",@"list1.2",@"list1.3",@"list1.4",@"list1.5", nil];
list2 = [NSArray arrayWithObjects:@"list2.1",@"list2.2",@"list2.3",@"list2.4",@"list2.5", nil];
list3 = [NSArray arrayWithObjects:@"list3.1",@"list3.2",@"list3.3",@"list3.4",@"list3.5", nil];
list4 = [NSArray arrayWithObjects:@"list4.1",@"list4.2",@"list4.3",@"list4.4",@"list4.5", nil];

// segmentedControl is declared as property
self.segmentedControl = [[UISegmentedControl alloc]     initWithItems:itemArray];
self.segmentedControl.frame = CGRectMake(0, 0, rect.size.width-20, 50);
self.segmentedControl.segmentedControlStyle =UISegmentedControlStylePlain;
[self.segmentedControl addTarget:self  action:@selector(MySegmentControlAction:) forControlEvents:     UIControlEventValueChanged];
self.segmentedControl.selectedSegmentIndex = 0;
[scroll addSubview:self.segmentedControl];
[self.view addSubview:scroll];

//ADDING TABLEVIEW OVER VIEW(I added this view to get leading and trailing space for tableViewCell)

 UIView *vw = [[UIView alloc]initWithFrame:CGRectMake(0, 70, rect.size.width, rect.size.height)];
   vw.backgroundColor = [UIColor redColor];
[self.view addSubview:vw];

    //TABLE VIEW
segmentTableView = [[UITableView alloc]initWithFrame:CGRectMake(10, 0, rect.size.width-20, rect.size.height-230)   style:UITableViewStylePlain];
segmentTableView.backgroundColor = [UIColor yellowColor];

segmentTableView.delegate = self;
segmentTableView.dataSource = self;

[vw addSubview:segmentTableView];
    }

// number of sections for tableView
- (NSInteger)numberOfSectionsInTableView:(UITableView *)theTableView
{
NSInteger a=0;
switch (self.segmentedControl.selectedSegmentIndex)
{
    case 0:
        a=list.count;
    break;

case 1:
    a=list1.count;
    break;

 case 2:
    a=list1.count;
    break;

   default:
    a=list1.count;
    break;
}
    return a;
 }
 // number of row in the section
 - (NSInteger)tableView:(UITableView *)theTableView   numberOfRowsInSection:(NSInteger)section
{
return 1;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier =    @"ScheduleCustomTableViewCell";

//ScheduleCustomTableViewCell is name of custom TabelViewCell
ScheduleCustomTableViewCell *cell =(ScheduleCustomTableViewCell *)   [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil)
{
NSArray *nib = [[NSBundle mainBundle]   loadNibNamed:@"ScheduleCustomTableViewCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
}

// conditions to get different values on label
if (self.segmentedControl.selectedSegmentIndex==0)
{
cell.labelAddress1.text = [list objectAtIndex:indexPath.section];
cell.labelAddress2.text = [list1 objectAtIndex:indexPath.section];
}
else if (self.segmentedControl.selectedSegmentIndex==1)
{
cell.labelAddress1.text = [list1 objectAtIndex:indexPath.section];
cell.labelAddress2.text = [list2 objectAtIndex:indexPath.section];
}
else
{
cell.labelAddress1.text = [list2 objectAtIndex:indexPath.section];
cell.labelAddress2.text = [list3 objectAtIndex:indexPath.section];
}
cell.backgroundColor = [UIColor yellowColor];

return cell ;
 }
-(CGFloat)tableView:(UITableView* )tableView heightForRowAtIndexPath:(NSIndexPath* )indexPath
{
return 130;
}
// Header is given to get spacing between TableViewCells
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
 {
return 10;
}

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
 {
 UIView *headerView = [[UIView alloc] init];
headerView.backgroundColor = [UIColor redColor];
 return headerView;
 }

  - (void)didReceiveMemoryWarning {
 [super didReceiveMemoryWarning];
 // Dispose of any resources that can be recreated.

}

- (void)MySegmentControlAction:(UISegmentedControl *)segment
{
[segmentTableView reloadData];
}

 @end

【讨论】：