轉發:http://www.cocoachina.com/ios/20141226/10775.htmlhtml
今天所介紹的主題是關於動畫的,在以前的博客中也有用到動畫的地方,今天就好好的總結一下iOS開發中經常使用的動畫。說到動畫其中有一個是仿射變換的概念,至於怎麼仿射的怎麼變換的,原理如何等在本篇博客中不作贅述。今天要分享的是如和用動畫作出咱們要作的效果。ios
今天主要用到的動畫類是CALayer下的CATransition至於各類動畫類中如何繼承的在這也不作贅述,網上的資料是一抓一大把。好廢話少說切入今天的正題。動畫
一.封裝動畫方法url
1.用CATransition實現動畫的封裝方法以下,每句代碼是何意思,請看註釋之。spa
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#pragma CATransition動畫實現
- (void) transitionWithType:(NSString *) type WithSubtype:(NSString *) subtype ForView : (UIView *) view
{
//建立CATransition對象
CATransition *animation = [CATransition animation];
//設置運動時間
animation.duration = DURATION;
//設置運動type
animation.type = type;
if
(subtype != nil) {
//設置子類
animation.subtype = subtype;
}
//設置運動速度
animation.timingFunction = UIViewAnimationOptionCurveEaseInOut;
[view.layer addAnimation:animation forKey:@
"animation"
];
}
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代碼說明:code
CATransition經常使用的屬性以下:htm
duration:設置動畫時間對象
type:稍後下面會詳細的介紹運動類型blog
subtype:和type匹配使用,指定運動的方向,下面也會詳細介紹繼承
timingFunction :動畫的運動軌跡,用於變化起點和終點之間的插值計算,形象點說它決定了動畫運行的節奏,好比是均勻變化(相同時間變化量相同)仍是先快後慢,先慢後快仍是先慢再快再慢。
動畫的開始與結束的快慢,有五個預置分別爲(下同):
kCAMediaTimingFunctionLinear 線性,即勻速
kCAMediaTimingFunctionEaseIn 先慢後快
kCAMediaTimingFunctionEaseOut 先快後慢
kCAMediaTimingFunctionEaseInEaseOut 先慢後快再慢
kCAMediaTimingFunctionDefault 實際效果是動畫中間比較快.
2.用UIView的block回調實現動畫的代碼封裝
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#pragma UIView實現動畫
- (void) animationWithView : (UIView *)view WithAnimationTransition : (UIViewAnimationTransition) transition
{
[UIView animateWithDuration:DURATION animations:^{
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationTransition:transition forView:view cache:YES];
}];
}
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3.改變View的背景圖,便於切換時觀察
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#pragma 給View添加背景圖
-(void)addBgImageWithImageName:(NSString *) imageName
{
self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:imageName]];
}
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二.調用上面的方法實現咱們想要的動畫
1.咱們在View上添加多個Button,給不一樣的Button設置不一樣的Tag值,而後再ViewController中綁定同一個方法,點擊不一樣的button實現不一樣的頁面切換效果。storyBoard上的控件效果以下圖所示:
2.下面咱們就開始編寫點擊button要回調的方法
(1).定義枚舉來標示按鈕所對應的動畫類型,代碼以下:
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typedef enum : NSUInteger {
Fade = 1,
//淡入淡出
Push,
//推擠
Reveal,
//揭開
MoveIn,
//覆蓋
Cube,
//立方體
SuckEffect,
//吮吸
OglFlip,
//翻轉
RippleEffect,
//波紋
PageCurl,
//翻頁
PageUnCurl,
//反翻頁
CameraIrisHollowOpen,
//開鏡頭
CameraIrisHollowClose,
//關鏡頭
CurlDown,
//下翻頁
CurlUp,
//上翻頁
FlipFromLeft,
//左翻轉
FlipFromRight,
//右翻轉
} AnimationType;
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(2),獲取Button的Tag值:
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UIButton *button = sender;
AnimationType animationType = button.tag;
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(3).每次點擊button都改變subtype的值,包括上,左,下,右
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NSString *subtypeString;
switch
(_subtype) {
case
0:
subtypeString = kCATransitionFromLeft;
break
;
case
1:
subtypeString = kCATransitionFromBottom;
break
;
case
2:
subtypeString = kCATransitionFromRight;
break
;
case
3:
subtypeString = kCATransitionFromTop;
break
;
default
:
break
;
}
_subtype += 1;
if
(_subtype > 3) {
_subtype = 0;
}
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(4)經過switch結合上邊的枚舉來判斷是那個按鈕點擊的
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switch
(animationType)
{
//各類Case,此處代碼下面會給出
}
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3.調用咱們封裝的運動方法,來實現動畫效果
(1)淡化效果
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case
Fade:
[self transitionWithType:kCATransitionFade WithSubtype:subtypeString ForView:self.view];
break
;
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(2).Push效果
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case
Push:
[self transitionWithType:kCATransitionPush WithSubtype:subtypeString ForView:self.view];
break
;
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效果以下:
(3).揭開效果:
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case
Reveal:
[self transitionWithType:kCATransitionReveal WithSubtype:subtypeString ForView:self.view];
break
;
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效果圖以下:
(4).覆蓋效果
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case
MoveIn:
[self transitionWithType:kCATransitionMoveIn WithSubtype:subtypeString ForView:self.view];
break
;
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效果圖以下:
(5).立方體效果
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case
Cube:
[self transitionWithType:@
"cube"
WithSubtype:subtypeString ForView:self.view];
break
;
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效果以下:
(6).吮吸效果
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case
SuckEffect:
[self transitionWithType:@
"suckEffect"
WithSubtype:subtypeString ForView:self.view];
break
;
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效果以下:
(7).翻轉效果
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case
OglFlip:
[self transitionWithType:@
"oglFlip"
WithSubtype:subtypeString ForView:self.view];
break
;
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圖以下:
(8).波紋效果
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case
RippleEffect:
[self transitionWithType:@
"rippleEffect"
WithSubtype:subtypeString ForView:self.view];
break
;
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(9).翻頁和反翻頁效果
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case
PageCurl:
[self transitionWithType:@
"pageCurl"
WithSubtype:subtypeString ForView:self.view];
break
;
case
PageUnCurl:
[self transitionWithType:@
"pageUnCurl"
WithSubtype:subtypeString ForView:self.view];
break
;
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(10).相機打開效果
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case
CameraIrisHollowOpen:
[self transitionWithType:@
"cameraIrisHollowOpen"
WithSubtype:subtypeString ForView:self.view];
break
;
case
CameraIrisHollowClose:
[self transitionWithType:@
"cameraIrisHollowClose"
WithSubtype:subtypeString ForView:self.view];
break
;
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(11).調用上面封裝的第二個動畫方法
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case
CurlDown:
[self animationWithView:self.view WithAnimationTransition:UIViewAnimationTransitionCurlDown];
break
;
case
CurlUp:
[self animationWithView:self.view WithAnimationTransition:UIViewAnimationTransitionCurlUp];
break
;
case
FlipFromLeft:
[self animationWithView:self.view WithAnimationTransition:UIViewAnimationTransitionFlipFromLeft];
break
;
case
FlipFromRight:
[self animationWithView:self.view WithAnimationTransition:UIViewAnimationTransitionFlipFromRight];
break
;
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