如何获取在WKinterfaceTable中的WKInterfacebutton的索引？
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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]; }
创build您的button的子类MyButton 。 MyButton应该有一个属性index 。
在创build表格行时设置button的索引。
在你的btnclicked方法中，将button转换为MyButton并读取索引
要在WKInterfaceTable中获取点击button的索引，您需要执行几个步骤：
- 为表格单元格（CustomTableCell.h / m）创build新类并将其设置在interface.storyboard中
2.单元格（故事板）中的每个button都应在CustomTableCell.h中具有引用出口
@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类的索引属性（检查可选行）和委托属性（向InterfaceController显示关于行中可选button的信息）。 还为委托使用创build协议。 下面的所有代码应该在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文件并使用动作的索引（1,2,3 – 行button编号）将委托调用添加到每个buttonTapped方法。
- (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.转到您的InterfaceController – 添加协议（TableCellButtonTappedProtocol）到InterfaceController类（不要忘记导入CustomTableCell.h），比转到configuration表方法，你可以初始化每一行你需要的索引
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]]; }
在你的InterfaceController实现方法中，从协议buttonTappedAtIndex：inRow：
-(void)buttonTappedAtIndex:(NSInteger)index inRow:(NSInteger)row { NSLog(@"index = %d; Row = %d",index,row); }
运行该项目，点击模拟器上的每个button，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