iOS开发中的动画实现（一）UIView自带动画效果

 1 #import "ViewController.h"
 2 @interface ViewController ()
 3 @property(nonatomic,strong)UIView *view_;
 4 @property(nonatomic,strong)UIView *view2;
 5 @property(nonatomic,strong)UIView *view3;
 6 @property(nonatomic,assign)BOOL change;
 7 @end
 8 
 9 @implementation ViewController
10 
11 - (void)viewDidLoad {
12     [super viewDidLoad];
13     
14     self.view_ = [[UIView alloc] initWithFrame:CGRectMake(100, 250, 100, 100)];
15     self.view_.backgroundColor = [UIColor blueColor];
16     [self.view addSubview:self.view_];
17     
18     self.view2 = [[UIView alloc] initWithFrame:self.view_.bounds];
19     self.view2.backgroundColor = [UIColor grayColor];
20     [self.view_ addSubview:self.view2];
21     self.view3 = [[UIView alloc] initWithFrame:self.view_.bounds];
22     self.view3.backgroundColor = [UIColor purpleColor];
23 }
24 
25 - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
26 #pragma mark UIView_self_animation
27 
28     // 1.1 Color_change 颜色渐变
29     [UIView beginAnimations:@"view_animation" context:nil];
30     [UIView setAnimationDuration:1];
31     self.view_.backgroundColor = [UIColor colorWithRed:arc4random()%256/255.0 green:arc4random()%256/255.0 blue:arc4random()%256/255.0 alpha:1];
32     
33     // 1.2 Zoom_change 缩放
34     CGRect frame = self.view_.frame;
35     frame.size = CGSizeMake(frame.size.width*(arc4random()%101/50.0)+10, frame.size.height*(arc4random()%101/50.0)+10);
36     self.view_.frame = frame;
37     
38     // 1.3 Position_move 位移
39     [UIView setAnimationRepeatAutoreverses:YES];
40     [UIView setAnimationRepeatCount:1.5];
41     frame.origin = CGPointMake((SC_WIDTH-100)*(arc4random()%101/100.0), (SC_HEIGHT-100)*(arc4random()%101/100.0));
42     self.view_.frame = frame;
43     [UIView commitAnimations];
44     
45     // 1.4 View_mask/change 转场动画
46     if(!_change){
47         _change = YES;
48         [UIView transitionWithView:self.view_ duration:1 options:UIViewAnimationOptionTransitionFlipFromRight animations:^{
49             if(self.view2.superview != self.view_){
50                 [self.view3 removeFromSuperview];
51                 [self.view_ addSubview:self.view2];
52             }else{
53                 [self.view2 removeFromSuperview];
54                 [self.view_ addSubview:self.view3];
55             }
56         } completion:^(BOOL finished) {
57             _change = NO;
58         }];
59     }