iOS Dev (31) 动画进阶之一

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iOS Dev (31) 动画进阶之一

作者：CSDN 大锐哥
地址：http://blog.csdn.net/prevention

说点废话

设置动画在 commitAnimations 之后的发生日期（感觉上一般不会跟 delay 一起使用）
```
  setAnimationStartDate
```
设置动画从 commitAnimation 之后延迟多久开始
```
  setAnimationDelay
```
设置动画持续的秒数
```
  setAnimationDuration
```
设置动画过程的相对速度
```
  setAnimationCurve
```
设置动画的重复次数
```
  setAnimationRepeatCount
```
设置动画到达目标值时是否自动反向播放
```
  setAnimationRepeatAutoreverses
```
设置是否激活动画
```
  setAnimationsEnabled
```
查看是否动画被激活
```
  areAnimationEnabled
```

上点代码

自己看看动画代码段吧：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];    UIImageView *imageView1 = [[UIImageView alloc] initWithFrame:CGRectMake(0, 20, 100, 100)];    imageView1.image = [UIImage imageNamed:@"gyy.jpg"];    imageView1.backgroundColor = [UIColor yellowColor];    imageView1.contentMode = UIViewContentModeScaleToFill;      // 充满    [self.window addSubview:imageView1];    imageView1.tag = 1;    UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(10, 300, 200, 80)];    btn.backgroundColor = [UIColor blueColor];    [btn addTarget:self action:@selector(animate) forControlEvents:UIControlEventTouchUpInside];    [self.window addSubview:btn];    self.window.backgroundColor = [UIColor whiteColor];    [self.window makeKeyAndVisible];    return YES;}- (void)animate{    NSLog(@"haha");    [UIView beginAnimations:nil context:NULL];    [UIView setAnimationDuration:10];    [UIView setAnimationDelay:0];    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];    UIView *v = [self.window viewWithTag:1];    v.frame = CGRectMake(100, 100, 200, 80);    [UIView commitAnimations];}

UIViewAnimationCurve

其中我们应该看到了 setAnimationCurve 方法，看看他都有哪些参数：

typedef NS_ENUM(NSInteger, UIViewAnimationCurve) {    UIViewAnimationCurveEaseInOut,         // slow at beginning and end    UIViewAnimationCurveEaseIn,            // slow at beginning    UIViewAnimationCurveEaseOut,           // slow at end    UIViewAnimationCurveLinear};

转载请注明来自：http://blog.csdn.net/prevention

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