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:];

        }

        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 = ;

    [self.view viewWithTag:];

    (UILable *)[self.view.window viewWithTag:];

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(,,,);

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(,);

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(, , , );

    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(,);  

    //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:] 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:];

    // 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:]];

        NSInteger maroon = [[whiteBackdrop subviews] indexOfObject:[whiteBackdrop viewWithTag:]];

    //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 :

            animation.type = kCATransitionFade;

            break;

        case :

            animation.type = kCATransitionMoveIn;

            break;

        case :

            animation.type = kCATransitionPush;

            break;

        case :

            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:];

    NSInteger purple = [[whitebg subviews] indexOfObject:[whitebg viewWithTag:]];

    NSInteger white = [[whitebg subviews] indexOfObject:[whitebg viewWithTag:]];

    [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 :

            animation.type = @"cube";

            break;

        case :

            animation.type = @"suckEffect";

            break;

        case :

            animation.type = @"oglFlip";

            break;

        case :

            animation.type = @"rippleEffect";

            break;

        case :

            animation.type = @"pageCurl";

            break;

        case :

            animation.type = @"pageUnCurl";

            break;

        case :

            animation.type = @"cameraIrisHollowOpen ";

            break;

        case :

            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 = ; i <= ; 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 = ;

           //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];

巴特西

ios开发之 -- UIView总结

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