如何为 iphone os 4.2 实现 splitview? [英] How implement splitview for iphone os 4.2?

问题描述

我在我的应用程序中使用了自定义拆分视图.

I have use the custom splitview in the my application.

自定义拆分视图 .h 文件

custom splitview .h file

@interface CustomUISplitViewController :UISplitViewController {

BOOL keepMasterInPortraitMode;
BOOL  keepMasterInPortraitMode1;
 }

.m 文件是

-(void) viewWillAppear:(BOOL)animated {

    keepMasterInPortraitMode1=keepMasterInPortraitMode;
    if(keepMasterInPortraitMode1 == NO) {
        if (self.interfaceOrientation == UIInterfaceOrientationLandscapeLeft || self.interfaceOrientation == UIInterfaceOrientationLandscapeRight) {
            UIViewController* master = [self.viewControllers objectAtIndex:0];
            UIViewController* detail = [self.viewControllers objectAtIndex:1];
            [self setupPortraitMode:master detail:detail];      
        }
    }

    if (self.interfaceOrientation == UIInterfaceOrientationPortrait || self.interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown) {
        UIViewController* master = [self.viewControllers objectAtIndex:0];
        UIViewController* detail = [self.viewControllers objectAtIndex:1];
        [self setupPortraitMode:master detail:detail];
      } 
     }
}

 - (void)setupPortraitMode:(UIViewController*)master detail:(UIViewController*)detail {
    //adjust master view
    CGRect f = master.view.frame;
    f.size.width = 220;
    f.size.height = 1024;
    f.origin.x = 0;
    f.origin.y =0;

    [master.view setFrame:f];

    //adjust detail view
    f = detail.view.frame;
    f.size.width = 548;
    f.size.height = 1024;
    f.origin.x = 221;
    f.origin.y = 0;

    [detail.view setFrame:f];
}

这在 iOS4.0 下可以正常工作，但在 4.2 下，当应用程序运行时我只看到一个视图.操作系统版本之间会发生什么变化?

This works correctly under iOS4.0 but under 4.2 I see only one view when the app runs. What could change between OS versions?

推荐答案

我的应用程序也遇到了完全相同的问题.我使用了相同的子类化技术，让 Master 和 Detail 在纵向和横向模式下都可见.在 4.2 之前运行良好，遗憾的是我没有测试 Beta 版本何时可用.

I have had the exact same problem with my applications. I had used the same Subclassing technique to have the Master and Detail visible in both Portrait and Landscape modes. Worked great until 4.2 which, unfortunately I didn't test for when the Beta releases were available.

我建议尝试优秀的 MGSplitViewController (http://mattgemmell.com/2010/07/31/mgsplitviewcontroller-for-ipad).它是 UISplitViewController 的开源实现.唯一的缺点是在 Interface Builder 中使用起来不太容易，但它包含一个示例项目.在视觉上它与 UISplitViewController 相同，但增加了对一些附加功能的支持，例如在运行时拖动拆分位置.

I recommend trying the excellent MGSplitViewController (http://mattgemmell.com/2010/07/31/mgsplitviewcontroller-for-ipad). It is an open-source implementation of the UISplitViewController. It's only drawback is that it isn't quite as easy to use in Interface Builder, but it includes a sample project. Visually it is identical to UISplitViewController, but adds support for several extras such as dragging the split position at runtime.

只需完全按照您的 UISplitViewController 实现它，但在某处添加以下行:

Just implement it exactly as your UISplitViewController but add the following line somewhere:

[splitViewController setShowsMasterInPortrait:YES];

这与 Apple 禁止在其版本中使用的私有 API 非常相似.

This is very similar to the Private API that Apple prohibits using with their version.

//[splitViewController setHidesMasterViewInPortrait:NO];  // Naughty, Naughty, Not allowed by the Apple police

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