IOS开发之UIView总结

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

 

 performSelector:
 performSelector:withObject:
 performSelector:withObject:withObject:

 实际调用

 

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

  有三个方法分别是

 

 //父视图
 [self.view superview]
 //所有子视图
  [self.view subviews]
 //自身的window
  self.view.window

循环一个视图下面所有视图的方法

 

 NSArray *allSubviews(UIView *aView)
 {
     NSArray *results = [aView subviews];
     for (UIView *eachView in [aView subviews])
     {
         NSArray *riz = allSubviews(eachView);
         if (riz) {
             results = [results arrayByAddingObjectsFromArray:riz];
         }
     }
     return results;
 }

循环返回一个APPLICATION里面所有的VIEW

 

 // Return all views throughout the application
 NSArray *allApplicationViews()
 {
     NSArray *results = [[UIApplication sharedApplication] windows];
     for (UIWindow *window in [[UIApplication sharedApplication] windows])
     {
         NSArray *riz = allSubviews(window);
         if (riz) results = [results arrayByAddingObjectsFromArray: riz];
     }
     return results;
 }

 

 找出所有的父视图

 

 // Return an array of parent views from the window down to the view
 NSArray *pathToView(UIView *aView)
 {
     NSMutableArray *array = [NSMutableArray arrayWithObject:aView];
     UIView *view = aView;
     UIWindow *window = aView.window;
     while (view != window)
     {
         view = [view superview];
         [array insertObject:view atIndex:0];
     }
     return array;
 }

UIView提供了大量管理视图的方法

 

 //加一个视图到一个视图里面
 addSubview:
 //将一个视图移到前面
 bringSubviewToFront:
 //将一个视图推送到背后
 sendSubviewToBack:
 //把视图移除
 removeFromSuperview
 //插入视图 并指定索引
 insertSubview:atIndex:
 //插入视图在某个视图之上
 insertSubview:aboveSubview:
 //插入视图在某个视图之下
 insertSubview:belowSubview:
 //交换两个位置索引的视图
 exchangeSubviewAtIndex:withSubviewAtIndex:

视图回调

 

 //当加入视图完成后调用
 (void)didAddSubview:(UIView *)subview
 //当视图移动完成后调用
 (void)didMoveToSuperview
 //当视图移动到新的WINDOW后调用
 (void)didMoveToWindow
 //在删除视图之后调用
 (void)willRemoveSubview:(UIView *)subview
 //当移动视图之前调用
 (void)didMoveToSuperview:(UIView *)subview
 //当视图移动到WINDOW之前调用
 (void)didMoveToWindow

 给UIView设置标记和检索视图

 

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

视图的几何特征

 

 //框架
 struct CGPoint {
   CGFloat x;
   CGFloat y;
 };
 typedef struct CGPoint CGPoint;

 /* Sizes. */

 struct CGSize {
   CGFloat width;
   CGFloat height;
 };
 typedef struct CGSize CGSize;

 struct CGRect {
   CGPoint origin;
   CGSize size;
 };
 typedef struct CGRect CGRect;



 CGRect rect = CGRectMake(0,0,320,480);
 UIView *view = [[UIView allow]initWithFrame:rect];

 //将String转成CGPoint 如 @”{3.0,2.5}”    {x,y}
 CGPoint CGPointFromString (
    NSString *string
 );

 //将String转成CGRect  @”{{3,2},{4,5}}”  {{x,y},{w, h}}
 CGRect CGRectFromString (
    NSString *string
 );

 //将String转成CGSize @”{3.0,2.5}” {w, h}
 CGSize CGSizeFromString (
    NSString *string
 );

 //CGPoint转成NSString
 NSString * NSStringFromCGPoint (
    CGPoint point
 );

 //CGRect转成NSString
 NSString * NSStringFromCGRect (
    CGRect rect
 );

 //CGSize转成NSString
 NSString * NSStringFromCGSize (
    CGSize size
 );

 //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)
 CGRect CGRectInset (
    CGRect rect,
    CGFloat dx,
    CGFloat dy
 );

 //判断两个矩形是否相交
 bool CGRectIntersectsRect (
    CGRect rect1,
    CGRect rect2
 );

 //初始为0的
 const CGPoint CGPointZero;
 const CGRect CGRectZero;
 const CGSize CGSizeZero;

 //创建CGPoint
 CGPoint CGPointMake (
    CGFloat x,
    CGFloat y
 );
 //创建CGRect
 CGRect CGRectMake (
    CGFloat x,
    CGFloat y,
    CGFloat width,
    CGFloat height
 );
 //创建CGSize
 CGSize CGSizeMake (
    CGFloat width,
    CGFloat height
 );

仿射变换

 

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

如想复原

 

 myview.transform = CGAffineTransformIdentity;

 直接设置视图的中心

 

 myview.center = CGPointMake(100,200);

 中心

 

 CGRectGetMinX
 CGRectGetMinY
 //X的中间值
 CGRectGetMidX
 //Y的中间值
 CGRectGetMidY
 CGRectGetMaxX
 CGRectGetMaxY

  定时器

 

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

  定义视图边界

 typedef struct UIEdgeInsets {
     CGFloat top, left, bottom, right;  // specify amount to inset (positive) for each of the edges. values can be negative to 'outset'
 } UIEdgeInsets;
 //eg
 UIEdgeInsets insets = UIEdgeInsetsMake(5, 5, 5, 5);
 CGRect innerRect = UIEdgeInsetsInsetRect([aView bounds], insets);
 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

 //angle 在0-2*PI之间比较好  旋转
 CGAffineTransform transform = CGAffineTransformMakeRotation(angle);
 //缩放
 CGAffineTransform transform = CGAffineTransformMakeScale(0.5f,0.5f);
 //改变位置的
 CGAffineTransform transform = CGAffineTransformMakeTranslation(50,60);

 //修改CGAffineTransform
 //修改 缩放
 CGAffineTransform scaled = CGAffineTransformScale(transform, degree, degree);
 //修改 位置
 CGAffineTransform transform = CGAffineTransformTranslate(
    CGAffineTransform t,
    CGFloat tx,
    CGFloat ty
 );

 //修改角度
 CGAffineTransform transform = CGAffineTransformRotate (
    CGAffineTransform t,
    CGFloat angle
 );
 //最后设置到VIEW
  [self.view setTransform:scaled];

 

建立UIView动画块

   //首先建立CGContextRef

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

  视图翻转

 

 UIView *whiteBackdrop = [self.view viewWithTag:100];
 // Choose left or right flip 选择左或右翻转
 if ([(UISegmentedControl *)self.navigationItem.titleView selectedSegmentIndex]){
 [UIView setAnimationTransition: UIViewAnimationTransitionFlipFromLeft forView:whiteBackdrop cache:YES];
 }else{
 [UIView setAnimationTransition: UIViewAnimationTransitionFlipFromRight forView:whiteBackdrop cache:YES];
 }
     NSInteger purple = [[whiteBackdrop subviews] indexOfObject:[whiteBackdrop viewWithTag:999]];
     NSInteger maroon = [[whiteBackdrop subviews] indexOfObject:[whiteBackdrop viewWithTag:998]];
 //交换视图
     [whiteBackdrop exchangeSubviewAtIndex:purple withSubviewAtIndex:maroon];

 //还有上翻和下翻两种 如下
 typedef enum {
 //没有任何效果
     UIViewAnimationTransitionNone,
     UIViewAnimationTransitionFlipFromLeft,
     UIViewAnimationTransitionFlipFromRight,
     UIViewAnimationTransitionCurlUp,
     UIViewAnimationTransitionCurlDown,
 } UIViewAnimationTransition;

  使用QuartzCore做动画

 

 //创建CATransition
 CATransition *animation = [CATransition animation];
 //设置代理
 animation.delegate = self;
 //设置动画过渡的时间
 animation.duration = 4.0f;
 //定义动画加速或减速的方式
 animation.timingFunction = UIViewAnimationCurveEaseInOut;
 //animation.type 表示设置过渡的种类 如 Fade,MoveIn,Push,Reveal
 switch ([(UISegmentedControl *)self.navigationItem.titleView selectedSegmentIndex]) {
         case 0:
             animation.type = kCATransitionFade;
             break;
         case 1:
             animation.type = kCATransitionMoveIn;
             break;
         case 2:
             animation.type = kCATransitionPush;
             break;
         case 3:
             animation.type = kCATransitionReveal;
         default:
             break;
     }
 //设置渐变的方向，上下左右
     if (isLeft)
         animation.subtype = kCATransitionFromRight;
     else
         animation.subtype = kCATransitionFromLeft;

 // Perform the animation
     UIView *whitebg = [self.view viewWithTag:10];
     NSInteger purple = [[whitebg subviews] indexOfObject:[whitebg viewWithTag:99]];
     NSInteger white = [[whitebg subviews] indexOfObject:[whitebg viewWithTag:100]];
     [whitebg exchangeSubviewAtIndex:purple withSubviewAtIndex:white];
     [[whitebg layer] addAnimation:animation forKey:@"animation"];

 

animation.type还可以用以下的赋值

 

 switch (theButton.tag) {
         case 0:
             animation.type = @"cube";
             break;
         case 1:
             animation.type = @"suckEffect";
             break;
         case 2:
             animation.type = @"oglFlip";
             break;
         case 3:
             animation.type = @"rippleEffect";
             break;
         case 4:
             animation.type = @"pageCurl";
             break;
         case 5:
             animation.type = @"pageUnCurl";
             break;
         case 6:
             animation.type = @"cameraIrisHollowOpen ";
             break;
         case 7:
             animation.type = @"cameraIrisHollowClose ";
             break;
         default:
             break;
     }

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

休眠一下

 

 [NSThread sleepUntilDate:[NSDate dateWithTimeIntervalSinceNow:1.0f]];

 

一个简单的通过图片做的动画

 

 // Load butterfly images
 NSMutableArray *bflies = [NSMutableArray array];
 for (int i = 1; i <= 17; i++){
     [bflies addObject:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"bf_%d", i] ofType:@"png"]]];
 }
 UIImageView *butterflyView = [[UIImageView alloc] initWithFrame:CGRectMake(40.0f, 300.0f, 60.0f, 60.0f)];
 butterflyView.tag = 300;
        //设置动画的图片
 butterflyView.animationImages = bflies;
        //设置时间
 butterflyView.animationDuration = 0.75f;
 [self.view addSubview:butterflyView];
        //开始动画
 [butterflyView startAnimating];
 [butterflyView release];