ios - 如何从扩展/嵌套的 UITableViewCell 导航到 View Controller

标签 ios objective-c uitableview

使用 Alex Di Mango 的 POPDownMenuTable-master 设置扩展嵌套的 UITableviewCell 并在我的项目中成功运行......但现在的问题是如何从菜单导航到其他 View Controller 并嵌套/扩展子菜单 UITableviewcells...使用 didSelectRowAtIndexPth 作为以编程方式创建的所有内容...请引用下面的代码...

**POPDCell.h**

#import <UIKit/UIKit.h>

@interface POPDCell : UITableViewCell

@property (strong, nonatomic) IBOutlet UILabel *labelText;
@property (strong, nonatomic) IBOutlet UILabel *separator;
@property (strong, nonatomic) IBOutlet UILabel *sepShadow;
@property (strong, nonatomic) IBOutlet UILabel *shadow;

@end

POPDCell.h

#import "POPDCell.h"

@implementation POPDCell

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        // Initialization code
    }
    return self;
}

-(void)prepareForReuse
{
    self.backgroundColor = [UIColor clearColor];
}
@end

POPDSampleViewController.m

#import "POPDSampleViewController.h"
#import "POPDViewController.h"

static NSString *kheader = @"menuSectionHeader";
static NSString *ksubSection = @"menuSubSection";

@interface POPDSampleViewController()<POPDDelegate> 

@end

@implementation POPDSampleViewController

- (void)viewDidLoad
{
    [super viewDidLoad];



    NSArray *sucSectionsA = [NSArray arrayWithObjects:@"Personal Information",@"Emergency Contact", @"Family Physician", nil];
    NSArray *sucSectionsB = [NSArray arrayWithObjects:@"Current Medications",@"Medical Details", nil];
    NSArray *sucSectionsC = [NSArray arrayWithObjects:@"Appointments",@"Other Reminders", nil];
    NSArray *sucSectionsD = [NSArray arrayWithObjects:@"Health Risk Assessment",@"Short HRA", nil];


    NSDictionary *section1 = [NSDictionary dictionaryWithObjectsAndKeys:
                              @"Dashboard", kheader, nil];

    NSDictionary *sectionA = [NSDictionary dictionaryWithObjectsAndKeys:
                                    @"My Profile", kheader,
                                    sucSectionsA, ksubSection,
                                    nil];

    NSDictionary *section2 = [NSDictionary dictionaryWithObjectsAndKeys:
                              @"My BMI", kheader, nil];

    NSDictionary *sectionB = [NSDictionary dictionaryWithObjectsAndKeys:
                              @"My Medical Status", kheader,
                              sucSectionsB, ksubSection,
                              nil];

    NSDictionary *sectionC = [NSDictionary dictionaryWithObjectsAndKeys:
                        @"My Health Planner", kheader,
                        sucSectionsC, ksubSection,
                        nil];
    NSDictionary *sectionD = [NSDictionary dictionaryWithObjectsAndKeys:
                              @"My Health Assessment", kheader,
                              sucSectionsD, ksubSection,
                              nil];
    NSDictionary *section3 = [NSDictionary dictionaryWithObjectsAndKeys:
                              @"My Wellness Tracker", kheader, nil];


    NSArray *menu = [NSArray arrayWithObjects: section1, sectionA, section2, sectionB, sectionC, sectionD, section3, nil];
    POPDViewController *popMenu = [[POPDViewController alloc]initWithMenuSections:menu];
    popMenu.delegate = self;
    popMenu.view.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
    //ios7 status bar
//     popMenu.tableView.contentInset = UIEdgeInsetsMake(20, 0, 0, 0);

    [self addChildViewController:popMenu];
    [self.view addSubview:popMenu.view];

}

#pragma mark POPDViewController delegate

-(void) didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

    NSLog(@"didSelectRowAtIndexPath: %ld,%ld",(long)indexPath.section,(long)indexPath.row);

}


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

@end

**POPDViewController.h**

#import <UIKit/UIKit.h>
#ifndef MB_STRONG
#if __has_feature(objc_arc)
#define MB_STRONG strong
#else
#define MB_STRONG retain
#endif
#endif

#ifndef MB_WEAK
#if __has_feature(objc_arc_weak)
#define MB_WEAK weak
#elif __has_feature(objc_arc)
#define MB_WEAK unsafe_unretained
#else
#define MB_WEAK assign
#endif
#endif

@protocol POPDDelegate <NSObject>

-(void) didSelectRowAtIndexPath:(NSIndexPath *)indexPath;

@end


@interface POPDViewController : UITableViewController
- (id)initWithMenuSections:(NSArray *) menuSections;
@property (MB_WEAK) id<POPDDelegate> delegate;

@end

**POPDViewController.m**

#import "POPDViewController.h"
#import "POPDCell.h"
#import "TableViewController.h"
#import "POPDSampleViewController.h"



#define TABLECOLOR [UIColor colorWithRed:255.0/255.0 green:255.0/255.0 blue:255.0/255.0 alpha:1.0]
#define CELLSELECTED [UIColor colorWithRed:4.0/255.0 green:198.0/255.0 blue:251.0/255.0 alpha:1.0]
#define SEPARATOR [UIColor colorWithRed:124.0/255.0 green:130.0/255.0 blue:131.0/255.0 alpha:1.0]
#define SEPSHADOW [UIColor colorWithRed:80.0/255.0 green:97.0/255.0 blue:110.0/255.0 alpha:1.0]
#define SHADOW [UIColor colorWithRed:69.0/255.0 green:84.0/255.0 blue:95.0/255.0 alpha:1.0]
#define TEXT [UIColor colorWithRed:24.0/255.0 green:22.0/255.0 blue:121.0/255.0 alpha:1.0]

static NSString *kheader = @"menuSectionHeader";
static NSString *ksubSection = @"menuSubSection";

@interface POPDViewController ()
@property NSArray *sections;
@property (strong, nonatomic) NSMutableArray *sectionsArray;
@property (strong, nonatomic) NSMutableArray *showingArray;
@end


@implementation POPDViewController
@synthesize delegate;

- (id)initWithMenuSections:(NSArray *) menuSections
{
    self = [super init];
    if (self) {
        self.sections = menuSections;
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];


    UIEdgeInsets inset = UIEdgeInsetsMake(5, 0, 0, 0);
    self.tableView.contentInset = inset;


//    [[UITableView appearance] setSeparatorColor:[UIColor grayColor]];


    self.tableView.tableHeaderView = ({
        UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 0, 80.0f)];
        UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(-50, 0, 200, 80)];
        imageView.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;
        imageView.image = [UIImage imageNamed:@"logo-hd.png"];
        imageView.layer.masksToBounds = YES;
        //        imageView.layer.cornerRadius = 50.0;
        imageView.layer.borderColor = [UIColor clearColor].CGColor;
        imageView.layer.borderWidth = 1.0f;
        imageView.layer.rasterizationScale = [UIScreen mainScreen].scale;
        imageView.layer.shouldRasterize = YES;
        imageView.clipsToBounds = YES;

        [view addSubview:imageView];
        view;
    });


    self.tableView.backgroundColor = TABLECOLOR;
    [self.tableView setSeparatorStyle:UITableViewCellSeparatorStyleSingleLine];

    self.tableView.frame = self.view.frame;

    self.sectionsArray = [NSMutableArray new];
    self.showingArray = [NSMutableArray new];
   [self setMenuSections:self.sections];

}

- (void)setMenuSections:(NSArray *)menuSections{

    for (NSDictionary *sec in menuSections) {

        NSString *header = [sec objectForKey:kheader];
        NSArray *subSection = [sec objectForKey:ksubSection];

        NSMutableArray *section = [NSMutableArray new];
        [section addObject:header];

        for (NSString *sub in subSection) {
            [section addObject:sub];
        }
        [self.sectionsArray addObject:section];
        [self.showingArray addObject:[NSNumber numberWithBool:NO]];
    }

    [self.tableView reloadData];
}



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

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{    
    return [self.sectionsArray count];
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{    
    if (![[self.showingArray objectAtIndex:section]boolValue]) {

        return 1;
    }
    else{

        return [[self.sectionsArray objectAtIndex:section]count];;
    }
}

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {

    if(indexPath.row ==0){
    if([[self.showingArray objectAtIndex:indexPath.section]boolValue]){
        [cell setBackgroundColor:CELLSELECTED];
    }else{
        [cell setBackgroundColor:[UIColor clearColor]];
    }
    }
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *cellIdentifier = @"menuCell";
    #warning : Use here your custom cell, instead of POPDCell

    POPDCell *cell = nil;
    cell = (POPDCell *)[tableView dequeueReusableCellWithIdentifier:cellIdentifier];
    NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"POPDCell" owner:self options:nil];

    if (cell == nil) {
        cell = [topLevelObjects objectAtIndex:0];
    }

    cell.labelText.text = [[self.sectionsArray objectAtIndex:indexPath.section] objectAtIndex:indexPath.row];
    cell.labelText.textColor = TEXT;
    cell.separator.backgroundColor = SEPARATOR;
    cell.sepShadow.backgroundColor = SEPSHADOW;
    cell.shadow.backgroundColor = SHADOW;

//    cell.layer.borderWidth = 0.5;

    [cell setSelectionStyle:UITableViewCellSelectionStyleNone];
    return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

    if([[self.showingArray objectAtIndex:indexPath.section]boolValue]){

        [self.showingArray setObject:[NSNumber numberWithBool:NO] atIndexedSubscript:indexPath.section];
    }else{
        [self.showingArray setObject:[NSNumber numberWithBool:YES] atIndexedSubscript:indexPath.section];
    }
    [tableView reloadSections:[NSIndexSet indexSetWithIndex:indexPath.section] withRowAnimation:UITableViewRowAnimationFade];

    [self.delegate didSelectRowAtIndexPath:indexPath];
}


@end

最佳答案

在didselectRowAtIndexPath中

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
   [self.tableView deselectRowAtIndexPath:indexPath animated:YES];
   if (indexPath.row ==0) {
      [self performSegueWithIdentifier:@"SegueIdentifier0" sender:self];
   }else if(indexPath.row==1{
      [self performSegueWithIdentifier:@"SegueIdentifier1" sender:self];
   }//and so on
}

取决于您有多少可以继续的 segues。在 Storyboard 中，您需要在选择 tableView 时转到属性检查器来增加原型(prototype)单元格的数量。您还需要按住 control-click-drag 到您希望使用的 viewControllers 并选择 push。然后将这些标识符命名为“SegueIdentifer0”...

那么你需要一个prepareForSeque方法

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

if ([segue.identifier isEqualToString:@"SegueIdentifier0"]) {
    NSLog(@"Segue1");
  }else if ([segue.identifier isEqualToString:@"SegueIdentifier1"]){
      NSLog(@"Segue2");
   }
}

关于ios - 如何从扩展/嵌套的 UITableViewCell 导航到 View Controller ，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37759835/

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