iphone - 调整表格 View 大小

Question

我正在寻找一种方法，让 UITableViewController 的顶部有一个 UITableView，下面有一个 UIPickerView(具有固定位置)。

我找到了使用以下代码修复选择器的解决方案:

- (void)viewDidLoad {
    [super viewDidLoad];

    _picker = [[UIPickerView alloc] initWithFrame:CGRectZero];
    _picker.showsSelectionIndicator = YES;
    _picker.dataSource = self;
    _picker.delegate = self;

    // Add the picker to the superview so that it will be fixed
    [self.navigationController.view addSubview:_picker];

    CGRect pickerFrame = _picker.frame;
    pickerFrame.origin.y = self.tableView.frame.size.height - 29 - pickerFrame.size.height;

    _picker.frame = pickerFrame;

    CGRect tableViewFrame = self.tableView.frame;
    tableViewFrame.size.height = 215;

    self.tableView.frame = tableViewFrame;

    [_picker release];
}

问题出在表格 View 上，调整大小似乎不起作用，所以我看不到所有结果。

感谢您的建议。

Answer 1

如果要管理的 View 由多个 subview 组成，其中一个是 TableView ，则应使用 UIViewController 子类而不是 UITableViewController 来管理 TableView 。您可以添加 UITableView subview ，并使 Controller 实现 UITableViewDelegate 和 UITableViewDataSource 协议(protocol)。

UITableViewController 类的默认行为是使表格 View 填充导航栏和选项卡栏(如果存在)之间的屏幕。

来自Table View Programming Guide for iOS :

Note: You should use aUIViewController subclass rather thana subclass of UITableViewController tomanage a table view if the view to bemanaged is composed of multiplesubviews, one of which is a tableview. The default behavior of theUITableViewController class is to makethe table view fill the screen betweenthe navigation bar and the tab bar (ifeither are present).

If you decide touse a UIViewController subclass ratherthan a subclass ofUITableViewController to manage atable view, you should perform acouple of the tasks mentioned above toconform to the human-interfaceguidelines. To clear any selection inthe table view before it’s displayed,implement the viewWillAppear: methodto clear the selected row (if any) bycalling deselectRowAtIndexPath:animated:.After the table view has beendisplayed, you should flash the scrollview’s scroll indicators by sending aflashScrollIndicators message to thetable view; you can do this in anoverride of the viewDidAppear: methodof UIViewController.