5.小项目：摸我干啥！版本3.0

---------------  ViewController.m  ---------------

#import "ViewController.h"

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UIButton *head;

- (IBAction)moveClick:(UIButton *) sender;

- (IBAction)sizeChangeClick:(UIButton *) sender;

- (IBAction)rotateClick:(UIButton *)sender;

@end

@implementation ViewController

- (IBAction)moveClick:(UIButton *) sender

{

    CGPoint center = self.head.center;

    switch (sender.tag)

    {

        case 1:

            center.y -= 10;

            break;

        case 2:

            center.x += 10;

            break;

        case 3:

            center.y += 10;

            break;

        case 4:

            center.x -= 10;

            break;

        default:

            break;

    }

    self.head.center = center;

}

- (IBAction)rotateClick:(UIButton *)sender

{

    switch (sender.tag)

    {

        case 5:

            self.head.transform = CGAffineTransformRotate(self.head.transform, -M_PI_4);

            break;

        case 6:

            self.head.transform = CGAffineTransformRotate(self.head.transform, M_PI_4);

        default:

            break;

    }

}

- (IBAction)sizeChangeClick:(UIButton *) sender

{

    CGRect bounds = self.head.bounds;

    switch (sender.tag)

    {

        case 7:

            bounds.size.width += 10;

            bounds.size.height += 10;

            break;

        case 8:

            bounds.size.width -= 10;

            bounds.size.height -= 10;

            break;

        default:

            break;

    }

    self.head.bounds = bounds;

}

@end