Question

不是一个全职的ios开发人员，需要让这个工作很抱歉，如果看起来很简单。我在自定义UITableViewCell中有以下内容，但它似乎并没有起作用。绝大多数选择器都在Controller中。这可能吗？我在这里做错了什么？

在我的自定义UITableViewCell

中

-(void)updateCell:(NSDictionary *)content
{

  UILabel *mainLabel=[[UILabel alloc] initWithFrame:CGRectMake(0.0, 0.0, 200.0f, 20.0f)];
  mainLabel.text=[content objectForKey:@"name"];
  [self.contentView addSubview:mainLabel];

  UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
  [button addTarget:self
             action:@selector(aMethod:)
   forControlEvents:UIControlEventTouchUpInside];
  [button setTitle:@"Show View" forState:UIControlStateNormal];
  button.frame = CGRectMake(0.0f, 20.0f, 50.0f, 20.0f);
  [self.contentView addSubview:button];
}

-(void)aMethod:(id)sender
{
  NSLog(@"here is a method");
}

在我的ViewController中的cellForRowAtIndexPath中调用。

事先提前

编辑1

基本上我想获得类似于此的扩展内容效果：http://jsfiddle.net/bso3sa07/

在iOS方面，我（位于https://github.com/trestles/testview）：

ViewController.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController <UITableViewDataSource, UITableViewDelegate>
@property (weak, nonatomic) IBOutlet UITableView *tableView;
@end

ViewController.m

#import "ViewController.h"
#import "ContentCell.h"

@interface ViewController (){
  NSMutableArray *_data;

}

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];


  self.tableView.dataSource=self;
  self.tableView.delegate=self;

  NSDictionary *obj1=@{@"name":@"Julie"};
  NSDictionary *obj2=@{@"name":@"Melissa"};

  _data=[[NSMutableArray alloc] init];
  [_data addObject:obj1];
  [_data addObject:obj2];

}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
  return [_data count];
}

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
  id tmpCell = [self tableView:tableView cellForRowAtIndexPath:indexPath];
  ContentCell *cell=(ContentCell *)tmpCell;
  return cell.height;
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  static NSString *CellIdentifier=@"ContentCell";
  ContentCell *cell = (ContentCell *)[self.tableView dequeueReusableCellWithIdentifier:CellIdentifier];
  cell = [[ContentCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
  [cell updateCell:[_data objectAtIndex:indexPath.row]];


  UIButton *moreButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
  [moreButton addTarget:self
                 action:@selector(vcSelector)
       forControlEvents:UIControlEventTouchUpInside];
  [moreButton setTitle:@"vcMore" forState:UIControlStateNormal];
  moreButton.frame = CGRectMake(200.0f, 10.0f, 100.0f, 20.0f);
  [cell.contentView addSubview:moreButton];


  return cell;
}

-(void)vcSelector
{
  NSLog(@"hello from vcSelector");
  // lets get a reference to that specific cell
  // how would I expand that specific cell?
  /*
   id tmpCell = [self tableView:tableView cellForRowAtIndexPath:indexPath];
   ContentCell *cell=(ContentCell *)tmpCell;
   return cell.height;
   */

}




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

@end

ContentCell.h

#import <UIKit/UIKit.h>

@interface ContentCell : UITableViewCell

@property (nonatomic, assign) CGFloat height;
-(void)updateCell:(NSDictionary *)obj;
@end

ContentCell.m

#import "ContentCell.h"



@implementation ContentCell

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

- (void)awakeFromNib
{
    // Initialization code
}

-(void)updateCell:(NSDictionary *)content
{
  self.height=60.0f;
  UILabel *mainLabel=[[UILabel alloc] initWithFrame:CGRectMake(0.0, 0.0, 100.0f, 20.0f)];
  mainLabel.text=[content objectForKey:@"name"];
  mainLabel.layer.borderColor=[UIColor greenColor].CGColor;
  mainLabel.layer.borderWidth=2.0f;
  [self.contentView addSubview:mainLabel];

  UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
  [button addTarget:self
             action:@selector(aMethod:)
   forControlEvents:UIControlEventTouchUpInside];
  [button setTitle:@"Show View" forState:UIControlStateNormal];
  button.frame = CGRectMake(0.0f, 20.0f, 100.0f, 20.0f);
  [self.contentView addSubview:button];

}


-(void)aMethod:(id)sender
{
  NSLog(@"here is a method");
  UIView *pushView=[[UIView alloc] initWithFrame:CGRectMake(10.0f, 50.0f, 300.0f, 5.0f)];
  [pushView setBackgroundColor:[UIColor redColor]];
  [self.contentView addSubview:pushView];
  self.height=90.0f;

}


- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
    [super setSelected:selected animated:animated];

    // Configure the view for the selected state
}

@end

Answer 1

尝试这样的事情：

- (UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"MyCell"];

    // Check if button exist already
    UIButton *button = (UIButton*)[cell viewWithTag:555];
    // if not - create new one
    if (!button)
    {
        button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        button.tag = 555;
        button.frame = CGRectMake(0.0f, 20.0f, 50.0f, 20.0f);
        [cell addSubview:button];
    }

    // update title and selector if required
    [button addTarget:self action:@selector(aMethod:) forControlEvents:UIControlEventTouchUpInside];
    [button setTitle:@"Show View" forState:UIControlStateNormal];

    return cell;
}

是否可以在自定义uitableviewcell中有一个引用其中的选择器的按钮

编辑1

1 个答案: