#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self initButton];
    }

-(void)initView{
    for (int i=0; i < 4; i ++ ) {
        UIView * view = [[UIView alloc]initWithFrame:CGRectMake(30+((self.view.frame.size.width-150)/4+30)*i, 500, (self.view.frame.size.width-150)/4, (self.view.frame.size.width-150)/4)];
        view.backgroundColor =[UIColor redColor];
        view.layer.cornerRadius = (self.view.frame.size.width-150)/4/2;
        [UIView animateWithDuration:4 delay:1 usingSpringWithDamping:0.01 initialSpringVelocity:0.1 options:UIViewAnimationOptionBeginFromCurrentState animations:^{
            view.transform = CGAffineTransformMakeScale(1.0 , 1.0);
            view.center = CGPointMake(30+((self.view.frame.size.width-150)/4+30)*i, 800);
        } completion:^(BOOL finished){
            view.center = CGPointMake(30+((self.view.frame.size.width-150)/4+30)*i, 800);
        }];
        
        [self.view addSubview:view];
    }
}
//duration動畫持續時間
//delay動畫延時幾秒執行
//velocity動畫開始速度
//options動畫效果引數options:UIViewAnimationOptionBeginFromCurrentState
//completion動畫執行完成的回撥
//usingSpringWithDamping:0.01範圍0.01-1。0取值越小，彈性越明顯



-(void)initButton{
    UIButton * button = [[UIButton alloc]initWithFrame:CGRectMake(self.view.frame.size.width/2 - 25, self.view.frame.size.height-50, 50, 50)];
    button.backgroundColor =[UIColor redColor];
    [button addTarget:self action:@selector(initView) forControlEvents:UIControlEventTouchDown ];
        NSLog(@"%d",1);
    [self.view addSubview:button];
}

 

optiona後面所接的選擇

enum {
   UIViewAnimationOptionLayoutSubviews            = 1 <<  0,
   UIViewAnimationOptionAllowUserInteraction      = 1 <<  1,
   UIViewAnimationOptionBeginFromCurrentState     = 1 <<  2,
   UIViewAnimationOptionRepeat                    = 1 <<  3,
   UIViewAnimationOptionAutoreverse               = 1 <<  4,
   UIViewAnimationOptionOverrideInheritedDuration = 1 <<  5,
   UIViewAnimationOptionOverrideInheritedCurve    = 1 <<  6,
   UIViewAnimationOptionAllowAnimatedContent      = 1 <<  7,
   UIViewAnimationOptionShowHideTransitionViews   = 1 <<  8,
   UIViewAnimationOptionOverrideInheritedOptions  = 1 <<  9,
    
   UIViewAnimationOptionCurveEaseInOut            = 0 << 16,
   UIViewAnimationOptionCurveEaseIn               = 1 << 16,
   UIViewAnimationOptionCurveEaseOut              = 2 << 16,
   UIViewAnimationOptionCurveLinear               = 3 << 16,
    
   UIViewAnimationOptionTransitionNone            = 0 << 20,
   UIViewAnimationOptionTransitionFlipFromLeft    = 1 << 20,
   UIViewAnimationOptionTransitionFlipFromRight   = 2 << 20,
   UIViewAnimationOptionTransitionCurlUp          = 3 << 20,
   UIViewAnimationOptionTransitionCurlDown        = 4 << 20,
   UIViewAnimationOptionTransitionCrossDissolve   = 5 << 20,
   UIViewAnimationOptionTransitionFlipFromTop     = 6 << 20,
   UIViewAnimationOptionTransitionFlipFromBottom  = 7 << 20,
};
 

關於 view.transform = CGAffineTransformMakeScale(1.0 , 1.0);

1.CGAffineTransformMakeScale (CGFloat sx, CGFloat sy);//建立一個給定比例放縮的變換，那麼圖片的寬度就會變為  width*sx  ，對應高度變為  hight * sy。

2.CGAffineTransform CGAffineTransformMakeRotation ( CGFloat angle); //建立一個旋轉角度的變化在這裡可以看到引數並不是一個角度，但是它是把引數作為一個弧度，然後把弧度再轉換為角度來處理，其結果就可能是將一個圖片檢視旋轉了多少度。

3。CGAffineTransform CGAffineTransformMakeTranslation (CGFloat tx,CGFloat ty);這個就比較好理解了，假設是一個檢視，那麼它的起始位置 x 會加上tx , y 會加上 ty