自定义 UIwindow 不显示 [英] Custom UIwindow not display

问题描述

我正在尝试为 rootViewController 上的自定义警报创建一个新窗口.<前>- (void)viewdidAppear{UIWindow *newWindow = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];newWindow.windowLevel = UIWindowLevelAlert + 1.0f;newWindow.backgroundColor = [UIColor redColor];newWindow.hidden = NO;

UIViewController *vc = [[UIViewController alloc] init];vc.view.backgroundColor = [UIColor blueColor];newWindow.rootViewController = vc;[newWindow makeKeyAndVisible];

但是新窗口不起作用.我对这个奇怪的问题感到困惑.我希望你能帮助我.

解决方案

解决方案是窗口集全局变量.Window makeKeyAndVisible 时，不释放窗口.

I'm trying to create a new window for Custom alert on rootViewController.

- (void)viewdidAppear
{
            UIWindow *newWindow = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
            newWindow.windowLevel = UIWindowLevelAlert + 1.0f;
            newWindow.backgroundColor = [UIColor redColor];
            newWindow.hidden = NO;


        UIViewController *vc = [[UIViewController alloc] init];
        vc.view.backgroundColor = [UIColor blueColor];
        newWindow.rootViewController = vc;

        [newWindow makeKeyAndVisible];

But the newWindow not working. I am confused with this strange question. I hope you can help me.

解决方案

Solution is window set Global variable. When Window makeKeyAndVisible,window was not be released.

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