使用自定义单元格获取UITableViewCell indexPath

Question

我有一个包含UITableView的视图.此UITableView的单元格在Interface Builder中创建,以便具有不同类型的单元格.因此,每个按钮的操作都在单元类中进行管理,如下所示.

- 我的UITableView包含不同类型的单元格:

- 我的类的头文件为类型一单元格("CellTypeOne.h"):

@interface CellTypeOne : UITableViewCell
{
}

- (IBAction)actionForFirstButton:(id)sender;
- (IBAction)actionForSecondButton:(id)sender;
- (IBAction)actionForThirdButton:(id)sender;
- (IBAction)actionForFourthButton:(id)sender;

- 我的类的头文件,用于类型二单元格("CellTypeTwo.h"):

@interface CellTypeTwo : UITableViewCell
{
}

- (IBAction)actionForTheUniqueButton:(id)sender;

- 包含我的表视图的视图("ViewContainingMyTableView.h"):

@interface ViewContainingMyTableView : UIViewController <UITableViewDelegate, UITableViewDataSource>
{
    UITableView *myTBV;
}

@property (retain, nonatomic) IBOutlet UITableView *myTBV;

@end

这是我想要做的事情:

例如,当我单击第一个单元格中的第一个按钮时,我希望能够显示"当前"单元格的indexPath .

例如,我希望在以下情况下输出以下内容:

• 我点击第一个单元格中的第一个按钮: 0
• 我点击第一个单元格中的第三个按钮: 0
• 我点击第二个单元格中的第一个和唯一按钮: 1
• 等等...

Answer 1

因为你正在使用自定义单元格我认为你还需要处理选择,因为你正在触摸自定义单元格内的按钮而不是单元格本身,因此tableview委托方法不会被触发,更好,因为我在你的自定义单元格中说了一个委托方法例如在你的自定义单元格中

在你的CellTypeOne.h添加中

//@class CellTypeOne; //if u want t pass cell to controller
@protocol TouchDelegateForCell1 <NSObject> //this delegate is fired each time you clicked the cell
 - (void)touchedTheCell:(UIButton *)button;
 //- (void) touchedTheCell:(CellTypeOne *)cell; //if u want t send entire cell this may give error add `@class CellTypeOne;` at the beginning  
@end

@interface CellTypeOne : UITableViewCell
{

}
@property(nonatomic, assign)id<TouchDelegateForCell1> delegate; //defining the delegate
- (IBAction)actionForFirstButton:(id)sender;
- (IBAction)actionForSecondButton:(id)sender;
- (IBAction)actionForThirdButton:(id)sender;
- (IBAction)actionForFourthButton:(id)sender;

在你的CellTypeOne.m文件中

@synthesize delegate; //synthesize the delegate 

- (IBAction)actionForFirstButton:(UIButton *)sender 
{ 
   //add this condition to all the actions becz u need to get the index path of tapped cell contains the button
    if([self.delegate respondsToSelector:@selector(touchedTheCell:)])
     {
        [self.delegate touchedTheCell:sender];
        //or u can send the whole cell itself
        //for example for passing the cell itself
        //[self.delegate touchedTheCell:self]; //while at the defining the delegate u must change the sender type to - (void)touchedTheCell:(CellTypeOne *)myCell; if it shows any error  in the defining of the delegate add "@class CellTypeOne;" above the defying the delegate
    }
}

在你的 ViewContainingMyTableView.h

 @interface ViewContainingMyTableView : UIViewController <UITableViewDelegate, UITableViewDataSource ,TouchDelegateForCell1> //confirms to custom delegate like table  delegates
 {
    UITableView *myTBV;
 }

 @property (retain, nonatomic) IBOutlet UITableView *myTBV;

 @end

并在ViewContainingMyTableView.m文件中

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{  
   //during the creating the custom cell 
   CellTypeOne *cell1 = [self.aTableView dequeueReusableCellWithIdentifier:@"cell"];
   if(cell1 == nil)
   { 
     cell1 = [[CustomCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"];
   }
     cell.delegate = self; //should set the delegate to self otherwise delegate methods does not called this step is important
}

//now implement the delegate method , in this method u can get the indexpath of selected cell 

- (void)touchedTheCell:(UIButton *)button
 {
    NSIndexPath *indexPath = [self.aTableView indexPathForCell:(UITableViewCell *)button.superview];
    NSLog(@"%@",indexPath.description);

 }
 /* if u pass the cell itself then the delegate method would be like below
- (void)touchedTheCell:(CellTypeOne *)myCell
 {
    NSIndexPath *indexPath = [self.aTableView indexPathForCell:myCell];//directly get the cell's index path
    //now by using the tag or properties, whatever u can access the contents of the cell
    UIButton *myButton = [myCell.contentView viewWithTag:1000]; //get the button 
    //... u can access all the contents in cell 
 }
 */

在你的情况下,这是单元格中的第一个按钮,为每个具有不同功能的按钮添加委托方法,对单元格中的另一个按钮重复上述过程

希望你得到这个:) hapy编码