Question

我正在我的TableView标题单元格中以编程方式创建一个按钮，并向其添加TouchUpInside Action。使用UIButton Header还包含另外两个UILabel。

问题：如果按钮被添加为SubView，则不响应。

但是当我从Method返回UIButton时它工作正常。

这是我的- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section

代码

- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{


UIView *viewHeader = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, 60)];

viewHeader.tag = 101;

viewHeader.backgroundColor = [UIColor cyanColor];


UIButton *btnBack = [UIButton buttonWithType:UIButtonTypeRoundedRect];

btnBack.frame = CGRectMake(15, 15, 50, 25);

//btnBack.titleLabel.text = @"Back";
[btnBack setTitle:@"Back" forState:UIControlStateNormal];

[btnBack addTarget:self action:@selector(Back:) forControlEvents:UIControlEventTouchUpInside];
btnBack.userInteractionEnabled = YES;

UILabel *lblPlayerName = [[UILabel alloc]initWithFrame:CGRectMake(75, 20, 60, 20)];
lblPlayerName.backgroundColor = [UIColor redColor];

UILabel *lblHighScoreOfPlayer = [[UILabel alloc]initWithFrame:CGRectMake(215, 20, 80, 20)];
lblHighScoreOfPlayer.backgroundColor = [UIColor yellowColor];


}
lblPlayerName.text = [@"Name" uppercaseString];

lblHighScoreOfPlayer.text = [@"Scores" uppercaseString];

[viewHeader addSubview:btnBack];    
[viewHeader addSubview:lblPlayerName];
[viewHeader addSubview:lblHighScoreOfPlayer];

return viewHeader;


}

Answer 1

首先，您将图像视图添加为用于标题视图的uiview的子视图，而不是 UIView *viewHeader = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, 60)];

程序应按以下顺序进行。

step1.allocate UIView step2：添加imageView作为uiView的子视图 step3：添加按钮作为imageview的子视图然后返回uiview

这是我测试的工作代码。

- (UIView *) tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section 
{
    UIView *headerView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, 30)] autorelease];
    UIButton *btnBack = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    btnBack.frame = CGRectMake(15, 15, 50, 25);


    [btnBack setTitle:@"Back" forState:UIControlStateNormal];

    [btnBack addTarget:self action:@selector(Back:) forControlEvents:UIControlEventTouchUpInside];
    btnBack.userInteractionEnabled = YES;

    [headerView addSubview: btnBack];
    return headerView;
}

Answer 2

我不确定，但您可能应为主userInteractionEnabled UIView设置属性viewHeader.userInteractionEnabled = YES;。

正如提及@ott尝试为UIView分配UIImageView而非viewHeader：

UIView *viewHeader = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 320, 60)];

试试吧。希望，它会帮助你

在TableViewHeader中以编程方式调用IBAction

2 个答案: