objective-c – addTarget：action：forControlEvents – TableView中的UISwitch – 发送者ok,事件总是0x0

使用此论坛中的精彩帖子,我在tableView中创建了一个switchView作为accessoryView.当触摸开关时,我的动作(switchChanged)被调用.只有发送方具有有效值,事件为0x0.

将目标添加到switchView：

[switchView addTarget:self action:@selector(switchChanged:forEvent:) forControlEvents:(UIControlEventValueChanged | UIControlEventTouchDragInside)];

那个行动：

- (void) switchChanged:(id)sender forEvent:(UIEvent *)event {
  if(event) {
    NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:[[[event touchesForView:sender] anyObject] locationInView:self.tableView]];
    IFDFlightlogFormQuestions *question = [self.resultsController objectAtIndexPath:indexPath];
    NSLog(@"IFDNewFlightlogViewController_Pad:switchChanged Switch is %@ xmlAttrib %@",[sender isOn],question.XmlAttrib);
    [self.xmlResults setValue:([sender isOn])?@"true":@"false" forKey:question.XmlAttrib];
  }
}

使用动作：@selector(switchChanged：forEvent