IOS5开发控件位置适应屏幕旋转代码

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toOrientation 
                                duration:(NSTimeInterval)duration {

    if (toOrientation == UIInterfaceOrientationLandscapeLeft ||
        toOrientation == UIInterfaceOrientationLandscapeRight) {
        [UIView beginAnimations:nil context:NULL]; {
            [UIView setAnimationDuration:1.0];
        }
            [UIView setAnimationDelegate:self];
        [viewA setFrame:CGRectMake(?,?,?,?)];
        [viewB setFrame:CGRectMake(?,?,?,?)];
        [viewC setFrame:CGRectMake(?,?,?,?)];
        } [UIView commitAnimations];    
    } else if  (toOrientation == UIInterfaceOrientationPortrait ||
            toOrientation == UIInterfaceOrientationPortraitUpsideDown) {
        [UIView beginAnimations:nil context:NULL]; {
            [UIView setAnimationDuration:1.0];
        }
        [UIView setAnimationDelegate:self];
        [viewA setFrame:CGRectMake(?,?,?,?)];
        [viewB setFrame:CGRectMake(?,?,?,?)];
        [viewC setFrame:CGRectMake(?,?,?,?)];
        } [UIView commitAnimations];    
    }

// Source @ http://www.jailbyte.ca/safari/files/SpinView.zip

//

//  UntitledViewController.h

//  SpinView

//

//  Created by Richard Vacheresse on 10-05-20.

//  Copyfright jailByte.ca 2010. Use it anyway you like.

//

#import <UIKit/UIKit.h>

@interface UntitledViewController : UIViewController

{

//-view (the image) used for manipulation by the accelerometer

UIImageView *imageView;

}

@property (nonatomic, retain) UIImageView *imageView;

- (IBAction) actionBtnOne;

@end

---------------------------------------------------------------------------

//

//  UntitledViewController.m

//

//  SpinView - this is an example of how to deal with the rotation of views via the accelerometer and the

//  overridden method shouldAutorotateToInterfaceOrientation. this example uses an image view as the view

// that is being rotated; this imageview is created with the press of a button, the resulting action is to

// simply show the layer in the view. from there you start to spin the device and the updates follow. to reset

//  the view you must press the home key and then restart the app; sorry, just too lazy to add anymore.

//

// **note: there is a bug to this solution, and it becomes apparent when using the device and the user rotates

// the phone quickly 180 degrees. i believe it may have something to do with when the floats that are used

// to hold the x and y values are updated while rotating; like it grabs the coordinates while spinnning past 90

// degrees. the next time you rotate the view, the view will correct itself.

//

//  Created by Richard Vacheresse on 10-05-20.

//  Copyfright jailByte.ca 2010. Use it anyway you like.

//

#import "UntitledViewController.h"

@implementation UntitledViewController

@synthesize imageView;

- (void)viewDidLoad

{

    [super viewDidLoad];

//-create a button

UIButton *btnOne = [UIButton buttonWithType:UIButtonTypeRoundedRect];

[btnOne setTitle: @"btnOne" forState: UIControlStateNormal];

[btnOne setFrame:CGRectMake(0.0f, 0.0f, 105.0f, 55.0f)];

[btnOne setCenter:CGPointMake(160.0f, 55.0f)];

[btnOne addTarget:self action:@selector(actionBtnOne) forControlEvents:UIControlEventTouchUpInside];

//-add it to the display

[self.view addSubview: btnOne];

}

//

// actionBtnOne - initializes a UIImageView, sets the initial properties, add it to the display, then releases it.

//

- (IBAction) actionBtnOne

{

imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 320.0f, 480.0f)];

[imageView setImage:[UIImage imageNamed:@"image.png"]];

[imageView setAutoresizesSubviews: YES];

[self.view addSubview:imageView];

[imageView release];

}

//

// shouldAutorotateToInterfaceOrientation - used to interact with the accelerometer; this is an overriden method.

//

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

if ( interfaceOrientation == UIInterfaceOrientationLandscapeLeft || interfaceOrientation == UIInterfaceOrientationLandscapeRight)

{

//-set the center of the image from the dimensions of the display

//-x value is +10 due to status bar

[UIView beginAnimations: nil context: NULL];

[UIView setAnimationDuration: 0.25];

CGFloat x = self.view.bounds.size.height / 2 + 10;

CGFloat y = self.view.bounds.size.width / 2;

CGPoint center = CGPointMake( x, y); 

[imageView setCenter: center];

[UIView commitAnimations];

[UIView beginAnimations: nil context: NULL];

[UIView setAnimationDuration: 0.25];

//-this will keep it in the same position - always standing up

//CGAffineTransform transform = CGAffineTransformMakeRotation(M_PI / 0.5);

//this will keep it standing up as in portrait however it will turn it upsidedown

//CGAffineTransform transform = CGAffineTransformMakeRotation(M_PI / 1.0);

//this will change the view to be upside-down but in proper alignment with the landscape mode

//CGAffineTransform transform = CGAffineTransformMakeRotation(M_PI / 2.0);

//this will change the view to be rightside-up in proper alignment with landscape mode

CGAffineTransform transform = CGAffineTransformMakeRotation(M_PI / -2.0);

imageView.transform = transform;

[UIView commitAnimations];

}

else

{

//-set the center of the image from the dimensions of the display

//-x value is +10 due to status bar

[UIView beginAnimations: nil context: NULL];

[UIView setAnimationDuration: 0.25];

CGFloat x = self.view.bounds.size.height / 2 + 10;

CGFloat y = self.view.bounds.size.width / 2;

CGPoint center = CGPointMake( x, y); 

[imageView setCenter: center];

[UIView commitAnimations];

[UIView beginAnimations: nil context: NULL];

[UIView setAnimationDuration: 0.25];

CGAffineTransform move = CGAffineTransformMakeTranslation(0.0f, 0.0f);

imageView.transform = move;

CGAffineTransform transform = CGAffineTransformMakeRotation(M_PI * 2);

imageView.transform = transform;

[UIView commitAnimations];

}

    // Return YES for supported orientations

return (interfaceOrientation == UIInterfaceOrientationPortrait ||

interfaceOrientation == UIInterfaceOrientationLandscapeRight ||

interfaceOrientation == UIInterfaceOrientationLandscapeLeft ||

interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown);

}

- (void)dealloc

{

[imageView release];

    [super dealloc];

}

//-the

@end