Question

我的代码是

-(void)addSelectionTarget:(id)target action:(SEL)action {
     //You will need to add properties for these.
    self.selectionTarget = target;
    self.selectionAction = action;
 }

//Call this when you want to call back to your interface controller

- (void)fireSelectionAction {

    [self.selectionTarget performSelector:self.selectionAction];

     //Or to do it without warnings on ARC
     IMP imp = [self.selectionTarget      methodForSelector:self.selectionAction];
    void (*func)(id, SEL) = (void *)imp;
    func(self.selectionTarget, self.selectionAction);

}

-(IBAction)btnclicked:(id)sender{
[self fireSelectionAction];
}

Answer 1

创建按钮的子类MyButton。 MyButton应该有一个属性index。

在创建表格行期间，设置按钮的索引。

在您的btnclicked方法中，将按钮转换为MyButton并阅读索引

Answer 2

要在WKInterfaceTable中获取抽头按钮的索引，您需要执行以下几个步骤：

为表格单元格创建新类（CustomTableCell.h / m）并在interface.storyboard中设置它

2.单元格中的每个按钮（在故事板中）都应该在CustomTableCell.h中引用Outlets

@property (unsafe_unretained, nonatomic) IBOutlet WKInterfaceButton *firstButton;
@property (unsafe_unretained, nonatomic) IBOutlet WKInterfaceButton *secondButton;
@property (unsafe_unretained, nonatomic) IBOutlet WKInterfaceButton *thirdButton;

并在CustomTableCell.m中设置操作

- (IBAction)firstButtonTapped
{

}
- (IBAction)secondButtonTapped
{

}
- (IBAction)thirdButtonTapped
{

}

3.添加到CustomTableCell类索引属性（以检查可选行）和委托属性（向InterfaceController显示有关行中可选按钮的信息）。还为委托使用创建协议。下面的所有代码都应该在CustomTableCell.h中。

@protocol TableCellButtonTappedProtocol <NSObject>
@optional
-(void)buttonTappedAtIndex:(NSInteger)index inRow:(NSInteger)row;
@end

@interface CustomTableCell : NSObject

@property (unsafe_unretained, nonatomic) IBOutlet WKInterfaceButton *firstButton;
@property (unsafe_unretained, nonatomic) IBOutlet WKInterfaceButton *secondButton;
@property (unsafe_unretained, nonatomic) IBOutlet WKInterfaceButton *thirdButton;
@property (nonatomic, assign) NSInteger index;
@property (nonatomic,weak) WKInterfaceController<TableCellButtonTappedProtocol> *delegate;

@end

4.转到.m文件，并使用操作索引（1,2,3 - 行按钮编号）为每个buttonTapped方法添加委托调用。

- (IBAction)firstButtonTapped
{
    if ([self.delegate respondsToSelector:@selector(buttonTappedAtIndex:inRow:)])
    {
        [self.delegate buttonTappedAtIndex:1 inRow:self.index];
    }
}
- (IBAction)secondButtonTapped
{
    if ([self.delegate respondsToSelector:@selector(buttonTappedAtIndex:inRow:)])
    {
        [self.delegate buttonTappedAtIndex:2 inRow:self.index];
    }
}
- (IBAction)thirdButtonTapped
{
    if ([self.delegate respondsToSelector:@selector(buttonTappedAtIndex:inRow:)])
    {
        [self.delegate buttonTappedAtIndex:3 inRow:self.index];
    }
}

5.转到你的InterfaceController - 将协议（TableCellButtonTappedProtocol）添加到InterfaceController类（不要忘记导入CustomTableCell.h），而不是转到configure-table方法，你可以用索引初始化每一行你需要

for(NSInteger i = 0; i<self.table.numberOfRows;)
    {
        CustomTableCell *cell = [self.table rowControllerAtIndex:i];
        cell.index = i;
        cell.delegate = self;
        [cell.firstButton setTitle:[NSString stringWithFormat:@"%d",1]];
        [cell.secondButton setTitle:[NSString stringWithFormat:@"%d",2]];
        [cell.thirdButton setTitle:[NSString stringWithFormat:@"%d",3]];
    }

6.在您的InterfaceController实现方法中，来自协议buttonTappedAtIndex：inRow：

-(void)buttonTappedAtIndex:(NSInteger)index inRow:(NSInteger)row
{
    NSLog(@"index = %d; Row = %d",index,row);
}

运行项目，点击模拟器上的每个按钮，你的日志应该是

2016-09-23 11:56:44.989 watchKit Extension[92239:2117977] index = 1; Row = 0
2016-09-23 11:56:46.212 watchKit Extension[92239:2117977] index = 2; Row = 0
2016-09-23 11:56:47.244 watchKit Extension[92239:2117977] index = 3; Row = 0
2016-09-23 11:56:49.180 watchKit Extension[92239:2117977] index = 1; Row = 1
2016-09-23 11:56:50.708 watchKit Extension[92239:2117977] index = 2; Row = 1
2016-09-23 11:56:51.540 watchKit Extension[92239:2117977] index = 3; Row = 1
2016-09-23 11:56:54.340 watchKit Extension[92239:2117977] index = 1; Row = 2
2016-09-23 11:56:54.804 watchKit Extension[92239:2117977] index = 2; Row = 2
2016-09-23 11:56:55.212 watchKit Extension[92239:2117977] index = 3; Row = 2

如何在WKinterfaceTable中获取WKInterfacebutton的索引？

2 个答案: