UIView的常见属性

//  ViewController.m
//  spin
//
//  Created by 袁跃 on 16/4/25.
//  Copyright © 2016年 iflytek. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIButton *btnButton;
- (IBAction)move:(id)sender;
- (IBAction)spin:(id)sender;
- (IBAction)scale:(id)sender;
- (IBAction)back:(id)sender;
- (IBAction)change:(id)sender;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically
 from a nib.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)move:(id)sender {
    
    self.btnButton.transform = CGAffineTransformTranslate(self.btnButton.transform, 0, 50);
}

- (IBAction)spin:(id)sender {
    
    [UIView animateWithDuration:3 animations:^{
        self.btnButton.transform = CGAffineTransformTranslate(self.btnButton.transform, 0, 50);
        self.btnButton.transform = CGAffineTransformScale(self.btnButton.transform, 2, 2);
        self.btnButton.transform = CGAffineTransformRotate(self.btnButton.transform, M_PI_4);
        
    }];
}

- (IBAction)scale:(id)sender {
    
    self.btnButton.transform = CGAffineTransformScale(self.btnButton.transform, 0.5, 0.5);
}

- (IBAction)back:(id)sender {
    
    self.btnButton.transform = CGAffineTransformIdentity;
}

- (IBAction)change:(id)sender {
    
    for (UIView* view
         in self.view.subviews) {
        view.backgroundColor = [UIColor redColor];
    }
}
@end