Autosize 2 (恒屏和自动旋转)
-(BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
{
return YES;
}- (void)willAnimateSecondHalfOfRotationFromInterfaceOrientation: (UIInterfaceOrientation)fromInterfaceOrientationduration:(NSTimeInterval)duration {
UIInterfaceOrientation interfaceOrientation = self.interfaceOrientation;
if (interfaceOrientation == UIInterfaceOrientationPortrait
|| interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)
{
button1.frame = CGRectMake(20, 20, 125, 125);
button2.frame = CGRectMake(175, 20, 125, 125);
button3.frame = CGRectMake(20, 168, 125, 125);
button4.frame = CGRectMake(175, 168, 125, 125);
button5.frame = CGRectMake(20, 315, 125, 125);
button6.frame = CGRectMake(175, 315, 125, 125);
}
else
{
button1.frame = CGRectMake(20, 20, 125, 125);
button2.frame = CGRectMake(20, 155, 125, 125);
button3.frame = CGRectMake(177, 20, 125, 125);
button4.frame = CGRectMake(177, 155, 125, 125);
button5.frame = CGRectMake(328, 20, 125, 125);
button6.frame = CGRectMake(328, 155, 125, 125);
}
}
- (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation {
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
有两个函数：
-(void) willAnimateFirstHalfOfRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
该方法在发生在旋转动画完全完成之前调用。
-(void) willAnimateSecondHalfOfRotationFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientationduration:(NSTimeInterval)duration
此方法在旋转开始之后，最后的旋转动画发生之前调用。
3、切换视图
这种方法使用于比较复杂的界面，是需要分别设计横向模式和纵向模式，然后在使用的过程中自动切换。
InterfaceOrientation有四个属性：Portait, LandscapeLeft, LandscapeRight, PortaitUpsideDown.
- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)
interfaceOrientation duration:(NSTimeInterval)duration {
if (interfaceOrientation == UIInterfaceOrientationPortrait)
{
self.view = self.portrait;
self.view.transform = CGAffineTransformIdentity;
self.view.transform = CGAffineTransformMakeRotation(degreesToRadian(0));
self.view.bounds = CGRectMake(0.0, 0.0, 300.0, 480.0);
}
else if (interfaceOrientation == UIInterfaceOrientationLandscapeLeft)
{
self.view = self.landscape;
self.view.transform = CGAffineTransformIdentity;
self.view.transform = CGAffineTransformMakeRotation(degreesToRadian(-90));
self.view.bounds = CGRectMake(0.0, 0.0, 460.0, 320.0);
}
else if (interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)
{
self.view = self.portrait;
self.view.transform = CGAffineTransformIdentity;
self.view.transform = CGAffineTransformMakeRotation(degreesToRadian(180));
self.view.bounds = CGRectMake(0.0, 0.0, 300.0, 480.0);
}
else if (interfaceOrientation == UIInterfaceOrientationLandscapeRight)
{
self.view = self.landscape;
self.view.transform = CGAffineTransformIdentity;
self.view.transform =
CGAffineTransformMakeRotation(degreesToRadian(90));
self.view.bounds = CGRectMake(0.0, 0.0, 460.0, 320.0);
}
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return YES;
}
因为在上面的代码中使用到了Core Graphics框架，因此要把该框架连接到该项目中，具体的方法是：在Resources上面点右键Add->Existing Frameworks。