MMDrawerController实例化

Question

我正在尝试在我的应用程序中使用MMDrawerController。我已经下载了源代码和依赖项。这是我添加到AppDelegate中的代码。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    UIViewController * leftDrawer = [[UIViewController alloc] init];
    UIViewController * center = [[UIViewController alloc] init];
    UIViewController * rightDrawer = [[UIViewController alloc] init];

    MMDrawerController * drawerController = [[MMDrawerController alloc]
                                             initWithCenterViewController:center
                                             leftDrawerViewController:leftDrawer
                                             rightDrawerViewController:rightDrawer];

    UINavigationController * navigationController = [[UINavigationController alloc] initWithRootViewController:center];

    [navigationController setRestorationIdentifier:@"MMExampleCenterNavigationControllerRestorationKey"];

    [self.drawerController setRestorationIdentifier:@"MMDrawer"];
    [self.drawerController setMaximumRightDrawerWidth:200.0];
    [self.drawerController setOpenDrawerGestureModeMask:MMOpenDrawerGestureModeAll];
    [self.drawerController setCloseDrawerGestureModeMask:MMCloseDrawerGestureModeAll];



    [self.drawerController
     setDrawerVisualStateBlock:^(MMDrawerController *drawerController, MMDrawerSide drawerSide, CGFloat percentVisible) {
         UIViewController * sideDrawerViewController;
         if(drawerSide == MMDrawerSideLeft){
             sideDrawerViewController = drawerController.leftDrawerViewController;
         }
         else if(drawerSide == MMDrawerSideRight){
             sideDrawerViewController = drawerController.rightDrawerViewController;
         }
         [sideDrawerViewController.view setAlpha:percentVisible];
     }];

    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    [self.window setRootViewController:self.drawerController];

    return YES;
}

然而，应用程序运行到一个空白的screen.What是我错过了吗？

Answer 1

UINavigationController * navigationController = 
 [[UINavigationController alloc] initWithRootViewController:drawerController];   

[self.window setRootViewController:navigationController];

并且不需要写在下面的行：

self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

希望这能完美地工作。

Answer 2

将返回前的代码行替换为以下内容

[self.window setRootViewController:navigationController];

Answer 3

您的问题是，您正在使用UIViewController设置中心、右侧和左侧的views，并且这些UIViewControllers设置也没有定义，以便集成右侧的MMDrawerController，请执行以下操作。

1. 为了保证视图已初始化，您可以使用以下代码来获取在情节提要中创建的UIViewControllers

UIStoryboard *故事板；storyboard = UIStoryboard storyboardWithName：“故事板名称”捆绑包:nil；UIViewController * leftSideNavController =故事板instantiateViewControllerWithIdentifier：“左侧视图标识符”；UIViewController * centerSideNavController = storyboard instantiateViewControllerWithIdentifier：“中心视图标识符”；UIViewController * rightSideNavController = storyboard instantiateViewControllerWithIdentifier：“右侧视图identifier";

• then使用从上一点获得的UIViewControllers初始化MMDrawerController

initWithCenterViewController:centerSideNavController leftDrawerViewController:leftSideNavController rightDrawerViewController:rightSideNavController];的self.drawerController = [MMDrawerController alloc