先在interface builder上放上6個rectbutton，豎放，一排三個

然后我們下面來看代碼

.h文件代碼

1 //

2 // AutoSizeViewController.h

3 // AutoSize

4 //

5 // Created by Scott on 10-10-26.

6 // Copyright 2010 __MyCompanyName__. All rights reserved.

7 //

8

9 #import

10

11 @interface AutoSizeViewController : UIViewController {

12 UIButton *button1;

13 UIButton *button2;

14 UIButton *button3;

15 UIButton *button4;

16 UIButton *button5;

17 UIButton *button6;

18 }

19

20 @property (nonatomic,retain) IBOutlet UIButton *button1;

21 @property (nonatomic,retain) IBOutlet UIButton *button2;

22 @property (nonatomic,retain) IBOutlet UIButton *button3;

23 @property (nonatomic,retain) IBOutlet UIButton *button4;

24 @property (nonatomic,retain) IBOutlet UIButton *button5;

25 @property (nonatomic,retain) IBOutlet UIButton *button6;

26 @end

27

下面我們看.m的代碼

//

// AutoSizeViewController.m

// AutoSize

//

// Created by Scott on 10-10-26.

// Copyright 2010 __MyCompanyName__. All rights reserved.

//

#import "AutoSizeViewController.h"

@implementation AutoSizeViewController

@synthesize button1;

@synthesize button2;

@synthesize button3;

@synthesize button4;

@synthesize button5;

@synthesize button6;

/*

// The designated initializer. Override to perform setup that is required before the view is loaded.

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {

if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]))

{

// Custom initialization

}

return self;

}

*/

/*

// Implement loadView to create a view hierarchy programmatically, without using a nib.

- (void)loadView {

}

*/

/*

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.

- (void)viewDidLoad {

[super viewDidLoad];

}

*/

// Override to allow orientations other than the default portrait orientation.

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

// Return YES for supported orientations

return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);

}

- (void) willRotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation duration:(NSTimeInterval)duration

{

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);

}

}

- (void)didReceiveMemoryWarning {

// Releases the view if it doesn't have a superview.

[super didReceiveMemoryWarning];

// Release any cached data, images, etc that aren't in use.

}

- (void)viewDidUnload {

// Release any retained subviews of the main view.

// e.g. self.myOutlet = nil;

self.button1=nil;

self.button2=nil;

self.button3=nil;

self.button4=nil;

self.button5=nil;

self.button6=nil;

[super viewDidUnload];

}

- (void)dealloc {

[button1 release];

button2.release;

button3.release;

button4.release;

button5.release;

button6.release;

[super dealloc];

}

@end

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