Converting the app to landscape

最新推荐文章于 2025-06-06 15:19:21 发布

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本文介绍了如何将iOS应用从竖屏模式转换为横屏模式的三个步骤：修改BullsEyeViewController.xib文件使其支持横屏；更新BullsEyeViewController.m文件中的代码允许视图控制器自动旋转到横屏模式；更改应用程序的支持的设备方向设置。

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To convert our app from portrait into landscape, we have to do three things:

1 Make the view from BullsEyeViewController.xib landscape instead of portrait.

2 Change one line of code in BullsEyeViewController.m that will allow the view controller to autorotate to landscape mod.

3 Change the "Supported Device Orientations" settings of our app.

in iOS 5

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation) interfaceOrientation
{
	return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);

This particular piece of functionality is queried by UIKit when the user rotates his iPhone. UIKit essentially asks the view controller: "Do you want to rotate to this new orientation?"

YES NO

if only allow for landscape, change

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)êinterfaceOrientation

{
return UIInterfaceOrientationIsLandscape(interfaceOrientation);

}

cmd left or right change the orientation in simulator

To change the initial orientation