iphone - 设备方向更改后窗口 subview 不旋转

Question

我正在 AppDelegate 中创建一个带有标签的 UIView 并像这样显示它:

    [window addSubview:self.roundedCornerView];

问题是当我旋转设备时，带标签的 View 根本不旋转。标签中的文字方向也错误。我的应用程序中的窗口有另一个 subview ，即 UIViewControllers subview ，并且它旋转得很好。

我是否需要在 AppDelegate 中创建另一个 UIViewController 并将创建的 View 附加到它，然后将其子类化并允许界面方向以使 roundedCornerView 旋转？

更新好的，我尝试通过创建新的 ViewController 并将其子类化来实现此目的，这里是我的 AppDelegate 中的代码:

    ActivityIndicatorWithLabelViewController *aiWithLabel = [[[ActivityIndicatorWithLabelViewController alloc] init] autorelease];
aiWithLabel.textOfTheLabel = text;

[window addSubview:aiWithLabel.view];

ActivityIndi​​catorWithLabelViewController 类在此处可见:

//
//  ActivityIndicatorWithLabelViewController.m
//  LOFT
//
//  Created by Marcin Zyga on 15.11.2011.
//  Copyright (c) 2011 __MyCompanyName__. All rights reserved.
//

#import "ActivityIndicatorWithLabelViewController.h"

@implementation ActivityIndicatorWithLabelViewController
@synthesize roundedCornerView;
@synthesize textActivityIndicatorLabel;
@synthesize textOfTheLabel;


- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)didReceiveMemoryWarning
{
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

    // Release any cached data, images, etc that aren't in use.
}

#pragma mark - View lifecycle

/*
// Implement loadView to create a view hierarchy programmatically, without using a nib.
- (void)loadView
{
}
*/


// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
    [super viewDidLoad];

    UIActivityIndicatorView *mainApplicationActivityIndicatorView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
    mainApplicationActivityIndicatorView.frame = CGRectMake(80, 80, 40, 40);
    mainApplicationActivityIndicatorView.hidesWhenStopped = YES;


    //self.roundedCornerView = [[[UIView alloc] initWithFrame:CGRectMake(280, 400, 200, 200)] autorelease];
    self.roundedCornerView = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, 200, 200)] autorelease];
    roundedCornerView.backgroundColor = [UIColor blackColor];
    roundedCornerView.alpha = 0.9f;
    roundedCornerView.layer.cornerRadius = 12.0;
    [roundedCornerView addSubview:mainApplicationActivityIndicatorView];


    [mainApplicationActivityIndicatorView startAnimating];
    //  self.roundedCornerView.autoresizingMask = UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleWidth;
    //self.roundedCornerView.autoresizesSubviews = YES;



    self.textActivityIndicatorLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 150, 200, 50)];
    self.textActivityIndicatorLabel.backgroundColor = [UIColor clearColor];
    self.textActivityIndicatorLabel.textAlignment = UITextAlignmentCenter;
    self.textActivityIndicatorLabel.textColor = [UIColor whiteColor];
    self.textActivityIndicatorLabel.font = [UIFont systemFontOfSize:22];
    self.textActivityIndicatorLabel.text = @"";
    //  self.textActivityIndicatorLabel.autoresizingMask = UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleWidth; 
    [self.roundedCornerView addSubview:textActivityIndicatorLabel]; 
    self.textActivityIndicatorLabel.text = textOfTheLabel;

    self.view.frame = CGRectMake(280, 400, 200, 200);
    [self.view addSubview:self.roundedCornerView];
    //self.view = self.roundedCornerView;

}


- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}



- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    if (UIInterfaceOrientationIsLandscape(interfaceOrientation)) {
        [self.textActivityIndicatorLabel removeFromSuperview];
        [self.textActivityIndicatorLabel release];

        self.textActivityIndicatorLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 50, 50)];
        self.textActivityIndicatorLabel.backgroundColor = [UIColor clearColor];
        self.textActivityIndicatorLabel.textAlignment = UITextAlignmentCenter;
        self.textActivityIndicatorLabel.textColor = [UIColor whiteColor];
        self.textActivityIndicatorLabel.font = [UIFont systemFontOfSize:22];
        self.textActivityIndicatorLabel.text = @"Landscape";
        [self.roundedCornerView addSubview:textActivityIndicatorLabel];         

        NSLog(@"LANDSCAPE");
    }
    NSLog(@"ENTERING SUPPORTED ORIENTATION!");
    return YES;
}

@end

如您所见，这里有一些调试代码。当我将设备从肖像旋转到风景时，我进入了支撑方向!以及 LADNSCAPE NSLog。删除标签工作正常，但是当我添加新标签时，它仍然以错误的方向显示(文本)。我做错了什么？

Answer 1

UIWindow 应该只有一个定义根 UIViewController 的 subview 。我相信 UIWindow 仅将旋转事件转发到其第一个 subview 。

创建一个容器 UIView 并将 subview 移入其中。