【发布时间】:2014-08-25 18:41:40
【问题描述】:
我不是全职的 iOS 开发人员,所以这可能很简单。我在自定义 UITableViewCell 中有以下内容,但它似乎不起作用。绝大多数的选择器都在控制器中。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。
编辑
基本上我想得到类似这样的扩展内容效果:http://jsfiddle.net/bso3sa07/
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
【问题讨论】:
-
是的,这完全有可能,而且调试时间不会太长。你想要每个单元格上的按钮吗?
-
是的,我会 - 我认为我的选择器设置不正确
-
在上面的代码中,您调用的方法位于自定义单元格对象内。您是要在单元格对象中执行代码,还是要在表格视图中执行某些功能?您能否详细说明该方法的用途?
-
向我们展示 cellForRowAtIndexPath 中的代码可能会有所帮助,这可能是一个重用的东西,但不太确定。
-
@selector似乎设置正确,据我所知。话虽如此,我现在无法测试它。但我认为@selector没有问题。