IOS开发之UIView总结

╰+哭是因爲堅強的太久メ 2022-08-07 01:32 181阅读 0赞

原文：[http://blog.csdn.net/xdrt81y/article/details/9128695][http_blog.csdn.net_xdrt81y_article_details_9128695]

如果想调用某个类的某个方法可以写成这样,这个方法来自NSObject类

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  performSelector: 
2.  performSelector:withObject: 
3.  performSelector:withObject:withObject:

实际调用

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  \[self performSelector:@selector(displayViews) withObject:nil afterDelay:1.0f\];

有三个方法分别是

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  //父视图 
2.  \[self.view superview\] 
3.  //所有子视图
4.   \[self.view subviews\] 
5.  //自身的window
6.   self.view.window

循环一个视图下面所有视图的方法

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  NSArray \*allSubviews(UIView \*aView) 
2.  \{ 
3.   NSArray \*results = \[aView subviews\]; 
4.  **for** (UIView \*eachView in \[aView subviews\]) 
5.   \{ 
6.   NSArray \*riz = allSubviews(eachView); 
7.  **if** (riz) \{ 
8.   results = \[results arrayByAddingObjectsFromArray:riz\]; 
9.   \} 
10.  \} 
11. **return** results; 
12. \}

循环返回一个APPLICATION里面所有的VIEW

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  // Return all views throughout the application
2.  NSArray \*allApplicationViews() 
3.  \{ 
4.   NSArray \*results = \[\[UIApplication sharedApplication\] windows\]; 
5.  **for** (UIWindow \*window in \[\[UIApplication sharedApplication\] windows\]) 
6.   \{ 
7.   NSArray \*riz = allSubviews(window); 
8.  **if** (riz) results = \[results arrayByAddingObjectsFromArray: riz\]; 
9.   \} 
10. **return** results; 
11. \}

找出所有的父视图

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  // Return an array of parent views from the window down to the view
2.  NSArray \*pathToView(UIView \*aView) 
3.  \{ 
4.   NSMutableArray \*array = \[NSMutableArray arrayWithObject:aView\]; 
5.   UIView \*view = aView; 
6.   UIWindow \*window = aView.window; 
7.  **while** (view != window) 
8.   \{ 
9.   view = \[view superview\]; 
10.  \[array insertObject:view atIndex:0\]; 
11.  \} 
12. **return** array; 
13. \}

UIView提供了大量管理视图的方法

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  //加一个视图到一个视图里面
2.  addSubview: 
3.  //将一个视图移到前面
4.  bringSubviewToFront: 
5.  //将一个视图推送到背后
6.  sendSubviewToBack: 
7.  //把视图移除
8.  removeFromSuperview 
9.  //插入视图 并指定索引
10. insertSubview:atIndex: 
11. //插入视图在某个视图之上
12. insertSubview:aboveSubview: 
13. //插入视图在某个视图之下
14. insertSubview:belowSubview: 
15. //交换两个位置索引的视图
16. exchangeSubviewAtIndex:withSubviewAtIndex:

视图回调

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  //当加入视图完成后调用
2.  (**void**)didAddSubview:(UIView \*)subview 
3.  //当视图移动完成后调用
4.  (**void**)didMoveToSuperview 
5.  //当视图移动到新的WINDOW后调用
6.  (**void**)didMoveToWindow 
7.  //在删除视图之后调用
8.  (**void**)willRemoveSubview:(UIView \*)subview 
9.  //当移动视图之前调用
10. (**void**)didMoveToSuperview:(UIView \*)subview 
11. //当视图移动到WINDOW之前调用
12. (**void**)didMoveToWindow

给UIView设置标记和检索视图

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  myview.tag = 1001; 
2.  \[self.view viewWithTag:1001\]; 
3.  (UILable \*)\[self.view.window viewWithTag:1001\];

视图的几何特征

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  //框架
2.  **struct** CGPoint \{ 
3.   CGFloat x; 
4.   CGFloat y; 
5.  \}; 
6.  **typedef** **struct** CGPoint CGPoint; 
7.  
8.  /\* Sizes. \*/
9.  
10. **struct** CGSize \{ 
11.  CGFloat width; 
12.  CGFloat height; 
13. \}; 
14. **typedef** **struct** CGSize CGSize; 
15. 
16. **struct** CGRect \{ 
17.  CGPoint origin; 
18.  CGSize size; 
19. \}; 
20. **typedef** **struct** CGRect CGRect; 
21. 
22. 
23. 
24. CGRect rect = CGRectMake(0,0,320,480); 
25. UIView \*view = \[\[UIView allow\]initWithFrame:rect\]; 
26. 
27. //将String转成CGPoint 如 @”\{3.0,2.5\}” \{x,y\}
28. CGPoint CGPointFromString ( 
29.  NSString \*string 
30. ); 
31. 
32. //将String转成CGRect @”\{ \{3,2\},\{4,5\}\}” \{ \{x,y\},\{w, h\}\}
33. CGRect CGRectFromString ( 
34.  NSString \*string 
35. ); 
36. 
37. //将String转成CGSize @”\{3.0,2.5\}” \{w, h\}
38. CGSize CGSizeFromString ( 
39.  NSString \*string 
40. ); 
41. 
42. //CGPoint转成NSString
43. NSString \* NSStringFromCGPoint ( 
44.  CGPoint point 
45. ); 
46. 
47. //CGRect转成NSString
48. NSString \* NSStringFromCGRect ( 
49.  CGRect rect 
50. ); 
51. 
52. //CGSize转成NSString
53. NSString \* NSStringFromCGSize ( 
54.  CGSize size 
55. ); 
56. 
57. //对一个CGRect进行修改 以这个的中心来修改 正数表示更小(缩小) 负数表示更大(放大)
58. CGRect CGRectInset ( 
59.  CGRect rect, 
60.  CGFloat dx, 
61.  CGFloat dy 
62. ); 
63. 
64. //判断两个矩形是否相交
65. **bool** CGRectIntersectsRect ( 
66.  CGRect rect1, 
67.  CGRect rect2 
68. ); 
69. 
70. //初始为0的
71. **const** CGPoint CGPointZero; 
72. **const** CGRect CGRectZero; 
73. **const** CGSize CGSizeZero; 
74. 
75. //创建CGPoint
76. CGPoint CGPointMake ( 
77.  CGFloat x, 
78.  CGFloat y 
79. ); 
80. //创建CGRect
81. CGRect CGRectMake ( 
82.  CGFloat x, 
83.  CGFloat y, 
84.  CGFloat width, 
85.  CGFloat height 
86. ); 
87. //创建CGSize
88. CGSize CGSizeMake ( 
89.  CGFloat width, 
90.  CGFloat height 
91. );

仿射变换

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  CGAffineTransform form = CGAffineTransformMakeRotation(PI); 
2.  myview.transform = form;

如想复原

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  myview.transform = CGAffineTransformIdentity;

直接设置视图的中心

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  myview.center = CGPointMake(100,200);

中心

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  CGRectGetMinX 
2.  CGRectGetMinY 
3.  //X的中间值
4.  CGRectGetMidX 
5.  //Y的中间值
6.  CGRectGetMidY 
7.  CGRectGetMaxX 
8.  CGRectGetMaxY

定时器

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  NSTime \*timer = \[NSTimer scheduledTimerWithTimeInterval:0.1f target:self selector:@selector(move:) userInfo:nil repeats:YES\];

定义视图边界

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  **typedef** **struct** UIEdgeInsets \{ 
2.   CGFloat top, left, bottom, right; // specify amount to inset (positive) for each of the edges. values can be negative to 'outset'
3.  \} UIEdgeInsets; 
4.  //eg
5.  UIEdgeInsets insets = UIEdgeInsetsMake(5, 5, 5, 5); 
6.  CGRect innerRect = UIEdgeInsetsInsetRect(\[aView bounds\], insets); 
7.  CGRect subRect = CGRectInset(innerRect, self.frame.size.width / 2.0f, self.frame.size.height / 2.0f);

仿射变换补充

//创建CGAffineTransform

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  //angle 在0-2\*PI之间比较好 旋转
2.  CGAffineTransform transform = CGAffineTransformMakeRotation(angle); 
3.  //缩放 
4.  CGAffineTransform transform = CGAffineTransformMakeScale(0.5f,0.5f); 
5.  //改变位置的
6.  CGAffineTransform transform = CGAffineTransformMakeTranslation(50,60); 
7.  
8.  //修改CGAffineTransform
9.  //修改 缩放 
10. CGAffineTransform scaled = CGAffineTransformScale(transform, degree, degree); 
11. //修改 位置
12. CGAffineTransform transform = CGAffineTransformTranslate( 
13.  CGAffineTransform t, 
14.  CGFloat tx, 
15.  CGFloat ty 
16. ); 
17. 
18. //修改角度 
19. CGAffineTransform transform = CGAffineTransformRotate ( 
20.  CGAffineTransform t, 
21.  CGFloat angle 
22. ); 
23. //最后设置到VIEW
24.  \[self.view setTransform:scaled\];

建立UIView动画块

//首先建立CGContextRef

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  CGContextRef context = UIGraphicsGetCurrentContext(); 
2.  //标记动画开始
3.  \[UIView beginAnimations:nil context:context\]; 
4.  //定义动画加速或减速的方式
5.  \[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut\]; 
6.  //定义动画的时长 1秒
7.  \[UIView setAnimationDuration:1.0\]; 
8.  //中间处理 位置变化，大小变化，旋转，等等的
9.  \[\[self.view viewWithTag:999\] setAlpha:1.0f\]; 
10. //标志动画块结束
11. \[UIView commitAnimations\]; 
12. //还可以设置回调
13. \[UIView setAnimationDelegate:self\]; 
14. //设置回调调用的方法
15. \[UIView setAnimationDidStopSelector:@selector(animationFinished:)\];

视图翻转

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  UIView \*whiteBackdrop = \[self.view viewWithTag:100\]; 
2.  // Choose left or right flip 选择左或右翻转
3.  **if** (\[(UISegmentedControl \*)self.navigationItem.titleView selectedSegmentIndex\])\{ 
4.  \[UIView setAnimationTransition: UIViewAnimationTransitionFlipFromLeft forView:whiteBackdrop cache:YES\]; 
5.  \}**else**\{ 
6.  \[UIView setAnimationTransition: UIViewAnimationTransitionFlipFromRight forView:whiteBackdrop cache:YES\]; 
7.  \} 
8.   NSInteger purple = \[\[whiteBackdrop subviews\] indexOfObject:\[whiteBackdrop viewWithTag:999\]\]; 
9.   NSInteger maroon = \[\[whiteBackdrop subviews\] indexOfObject:\[whiteBackdrop viewWithTag:998\]\]; 
10. //交换视图
11.  \[whiteBackdrop exchangeSubviewAtIndex:purple withSubviewAtIndex:maroon\]; 
12. 
13. //还有上翻和下翻两种 如下
14. **typedef** **enum** \{ 
15. //没有任何效果
16.  UIViewAnimationTransitionNone, 
17.  UIViewAnimationTransitionFlipFromLeft, 
18.  UIViewAnimationTransitionFlipFromRight, 
19.  UIViewAnimationTransitionCurlUp, 
20.  UIViewAnimationTransitionCurlDown, 
21. \} UIViewAnimationTransition;

使用QuartzCore做动画

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  //创建CATransition
2.  CATransition \*animation = \[CATransition animation\]; 
3.  //设置代理
4.  animation.delegate = self; 
5.  //设置动画过渡的时间
6.  animation.duration = 4.0f; 
7.  //定义动画加速或减速的方式 
8.  animation.timingFunction = UIViewAnimationCurveEaseInOut; 
9.  //animation.type 表示设置过渡的种类 如 Fade,MoveIn,Push,Reveal
10. **switch** (\[(UISegmentedControl \*)self.navigationItem.titleView selectedSegmentIndex\]) \{ 
11. **case** 0: 
12.  animation.type = kCATransitionFade; 
13. **break**; 
14. **case** 1: 
15.  animation.type = kCATransitionMoveIn; 
16. **break**; 
17. **case** 2: 
18.  animation.type = kCATransitionPush; 
19. **break**; 
20. **case** 3: 
21.  animation.type = kCATransitionReveal; 
22. **default**: 
23. **break**; 
24.  \} 
25. //设置渐变的方向，上下左右
26. **if** (isLeft) 
27.  animation.subtype = kCATransitionFromRight; 
28. **else**
29.  animation.subtype = kCATransitionFromLeft; 
30. 
31. // Perform the animation
32.  UIView \*whitebg = \[self.view viewWithTag:10\]; 
33.  NSInteger purple = \[\[whitebg subviews\] indexOfObject:\[whitebg viewWithTag:99\]\]; 
34.  NSInteger white = \[\[whitebg subviews\] indexOfObject:\[whitebg viewWithTag:100\]\]; 
35.  \[whitebg exchangeSubviewAtIndex:purple withSubviewAtIndex:white\]; 
36.  \[\[whitebg layer\] addAnimation:animation forKey:@"animation"\];

animation.type还可以用以下的赋值

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  **switch** (theButton.tag) \{ 
2.  **case** 0: 
3.   animation.type = @"cube"; 
4.  **break**; 
5.  **case** 1: 
6.   animation.type = @"suckEffect"; 
7.  **break**; 
8.  **case** 2: 
9.   animation.type = @"oglFlip"; 
10. **break**; 
11. **case** 3: 
12.  animation.type = @"rippleEffect"; 
13. **break**; 
14. **case** 4: 
15.  animation.type = @"pageCurl"; 
16. **break**; 
17. **case** 5: 
18.  animation.type = @"pageUnCurl"; 
19. **break**; 
20. **case** 6: 
21.  animation.type = @"cameraIrisHollowOpen "; 
22. **break**; 
23. **case** 7: 
24.  animation.type = @"cameraIrisHollowClose "; 
25. **break**; 
26. **default**: 
27. **break**; 
28.  \}

上面这个是转自这里的http://2015.iteye.com/blog/1122130

休眠一下

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  \[NSThread sleepUntilDate:\[NSDate dateWithTimeIntervalSinceNow:1.0f\]\];

一个简单的通过图片做的动画

C代码 [![收藏代码][icon_star.png]][icon_star.png 1]

1.  // Load butterfly images
2.  NSMutableArray \*bflies = \[NSMutableArray array\]; 
3.  **for** (**int** i = 1; i <= 17; i++)\{ 
4.   \[bflies addObject:\[UIImage imageWithContentsOfFile:\[\[NSBundle mainBundle\] pathForResource:\[NSString stringWithFormat:@"bf\_%d", i\] ofType:@"png"\]\]\]; 
5.  \} 
6.  UIImageView \*butterflyView = \[\[UIImageView alloc\] initWithFrame:CGRectMake(40.0f, 300.0f, 60.0f, 60.0f)\]; 
7.  butterflyView.tag = 300; 
8.  //设置动画的图片
9.  butterflyView.animationImages = bflies; 
10. //设置时间
11. butterflyView.animationDuration = 0.75f; 
12. \[self.view addSubview:butterflyView\]; 
13. //开始动画
14. \[butterflyView startAnimating\]; 
15. \[butterflyView release\]; 
16.

[http_blog.csdn.net_xdrt81y_article_details_9128695]: http://blog.csdn.net/xdrt81y/article/details/9128695
[icon_star.png]: http://langhua9527.iteye.com/images/icon_star.png
[icon_star.png 1]: /images/20220805/3248dfd2232d4ef49313a505019db5a7.png