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;    
    } 

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];