UIViewController不会自动旋转 [英] UIViewController does not auto rotate

问题描述

正如标题所说。无论怎样，我的UIViewController都不会旋转。当它加载时，调用了theAutorotateToInterfaceOrientation，但之后它没有被调用。

As the title says. My UIViewController will not rotate no matter what. When it loads shouldAutorotateToInterfaceOrientation is being called but after that it doesnt.

更新1：

UPDATE 1:

这是一个非常奇怪的问题。至少对于我来说。我将尝试解释一切。

It's a really really wierd problem. At least for me. And i ll try to explain everything.

这是一个基于导航的应用程序。每个控制器都有

It's a navigation based app. Every controller has

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{
    return YES; 
}

Xcontroller是Acontroller的子节点，它不会自动旋转。如果Xcontroller成为Bcontroller的孩子，那么它将自动旋转。所以Acontroller出了问题。但Acontroller与Bcontroller相同（除了它的数据）。

Xcontroller is a child of Acontroller and it doesn't auto rotate. If Xcontroller become a child of Bcontroller then it will autorotate. So something is wrong with Acontroller. But Acontroller is identical (except its data) to Bcontroller.

什么是错的？

更新2：

UPDATE 2:

我决定重新创建Acontroller。它确实奏效了。我相信我错过了一些愚蠢的东西。

I decided to recreate Acontroller. And it worked.I believe I was missing something stupid.

推荐答案

我不确定这是否和你的情况一样。但我经历了同样的事情。 shouldAutorotateToInterfaceOrientation 仅在开始时调用一次。
通过分开代码进行一些严格的调试之后，我发现原因在于我的重写方法。
我之前有这个：

I am not sure whether it's the same reason as your case. But I experienced the same thing. the shouldAutorotateToInterfaceOrientation was only called once in the beginning. After some serious debugging by taking code apart, I found that the reason is in my overridden init method. I had this before:

- (id)initWithAlbum:(PhotoAlbum *)theAlbum {
    if (self) {     
        self.photoAlbum = theAlbum;     
    }
    return self;
}

然后我改为此

- (id)initWithAlbum:(PhotoAlbum *)theAlbum {
    if (self = [super init]) {      
        self.photoAlbum = theAlbum;     
    }
    return self;
}

注意：唯一的区别是我加了 [super init] 调用父init。
完成此更改后，旋转效果很好，每次旋转屏幕时都会调用shouldAutorotateToInterfaceOrientation。
希望得到这个帮助。

Note: the only difference is I added [super init] to call the parent init. After this change, the rotation works well and the shouldAutorotateToInterfaceOrientation is being called everytime I rotate the screen. Hope this help.

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