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];