尝试在顶部构建一个带有导航栏的tableview [英] Trying to construct a tableview with a navigation bar at top

问题描述

这是我使用的代码。我缺少什么？

Here's the code I used. What am I missing?

- (void)loadView
{
    CGSize screen_size = [[UIScreen mainScreen] bounds].size;

    CGFloat navBarHeight = 40;

    UINavigationBar *nav = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, screen_size.width, navBarHeight)];

    UITableView *table = [[UITableView alloc] initWithFrame:CGRectMake(0, navBarHeight, screen_size.width, screen_size.height - navBarHeight) style:UITableViewStylePlain];

    table.autoresizingMask = UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth;
    table.delegate = self;
    table.dataSource = self;
    table.editing = YES;
    [table reloadData];

    [self.view addSubview:nav];
    [self.view addSubview:table];
    [nav release];
    [table release];
}

而不是下面有桌子的导航栏，我得到一个黑屏状态栏。

Instead of a nav bar with a table underneath, I get a black screen under the status bar.

推荐答案

您需要在loadView方法中创建一个包含视图，并将其设置为视图控制器上的视图：

You need to create a containing view in your loadView method and set it as the view on your view controller:

- (void)loadView {


    CGSize screen_size = [[UIScreen mainScreen] bounds].size;

    UIView *myView = [[UIView alloc] initWithFrame:CGRectMake(0,0,screen_size.width,screen_size.height)];
    self.view = myView;

    CGFloat navBarHeight = 40;

    UINavigationBar *nav = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, screen_size.width, navBarHeight)];

    UITableView *table = [[UITableView alloc] initWithFrame:CGRectMake(0, navBarHeight, screen_size.width, screen_size.height - navBarHeight) style:UITableViewStylePlain];

    table.autoresizingMask = UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth;
    table.delegate = self;
    table.dataSource = self;
    table.editing = YES;
    [table reloadData];

    [self.view addSubview:nav];
    [self.view addSubview:table];
    [nav release];
    [table release];
    [myView release];

}

或者，如果您的nib文件与您的关联查看控制器然后你应该使用viewDidLoad方法而不是loadView。

Or alternately, if you have a nib file associated with your view controller then you should be using the viewDidLoad method instead of loadView.

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