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iPhone 响应荧幕旋转

发布时间: 2012-09-12 09:21:30 作者: rapoo

iPhone 响应屏幕旋转

首先重写UIViewController方法:

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

?你也可以根据toInterfaceOrientation的不同值来判断是否允许旋转。这个传入参数有四种取值:

UIInterfaceOrientationLandscapeLeft 横向Home键在左UIInterfaceOrientationLandscapeRight 横向Home键在右UIInterfaceOrientationPortrait 正常UIInterfaceOrientationPortraitUpsideDown 反向Home键在上


可以在下面的方法中处理旋转后要重画的组件,或者重载另一个NIB文件。?

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {// 重新加载一个Nib文件if (self.interfaceOrientation == UIInterfaceOrientationLandscapeLeft || self.interfaceOrientation == UIInterfaceOrientationLandscapeRight) {[[NSBundle mainBundle] loadNibNamed:@"LoginViewLandscape" owner:self options:nil];}else {[[NSBundle mainBundle] loadNibNamed:@"LoginView" owner:self options:nil];}// 重写Toolbar// Set ToolbarUIBarButtonItem *newChat = [[UIBarButtonItem alloc] initWithTitle:@"新增" style:UIBarButtonItemStylePlain target:self action:@selector(createChat:)];UIBarButtonItem *refresh = [[UIBarButtonItem alloc] initWithTitle:@"刷新" style:UIBarButtonItemStylePlain target:self action:@selector(refresh:)];UIBarButtonItem *deleteChat = [[UIBarButtonItem alloc] initWithTitle:@"删除" style:UIBarButtonItemStylePlain target:self action:@selector(deleteChat:)];self.deleteItem = deleteChat;self.deleteItem.enabled = NO;UIBarButtonItem *fixedItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:NULL];if (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft || toInterfaceOrientation == UIInterfaceOrientationLandscapeRight) {fixedItem.width = 155;}else {fixedItem.width = 75;}NSArray *toolBarItems = [[NSArray alloc] initWithObjects:newChat, fixedItem, refresh, fixedItem, self.deleteItem, nil];[self setToolbarItems:toolBarItems];[toolBarItems release];[newChat release];[deleteChat release];[fixedItem release];[refresh release];}

?

如果你使用了Interface Builder工具,并不一定要重写界面,工具有自动处理的方式。

方法:

1 选中你的组件

2 Command+3 打开View Size配置界面 你会看到有一项叫:Autosizing ?如下图:

3 设置组件自动缩放情况

??左边的框,中间有个小框,里面是指垂直和水平是否缩放,外面是指位置。根据各自应用调整,调整后在右边的小动画里能看到效果。


下面是两个实现了旋转响应的效果图,一个是重新加载了Nib文件,一个是用Interface Builder工具自动缩放。



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