iOS實現超酷頁面切換動畫特效
今天所介紹的主題是關于動畫的,在之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開發中常用的動畫。說道動畫其中有一個是仿射變換的概念,至于怎么仿射的怎么變換的,原理如何等在本篇博客中不做贅述。今天要分享的是如和用動畫做出我們要做的效果。
今天主要用到的動畫類是CALayer下的CATransition至于各種動畫類中如何繼承的在這也不做贅述,網上的資料是一抓一大把。好廢話少說切入今天的正題。
一.封裝動畫方法
1.用CATransition實現動畫的封裝方法如下,每句代碼是何意思,請看注釋之。
#pragma CATransition動畫實現
(void) transitionWithType:(NSString ) type WithSubtype:(NSString ) subtype ForView : (UIView ) view { //創建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"]; }</pre>
代碼說明:
CATransition常用的屬性如下:
duration:設置動畫時間
type:稍后下面會詳細的介紹運動類型
subtype:和type匹配使用,指定運動的方向,下面也會詳細介紹
timingFunction :動畫的運動軌跡,用于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,比如是
均勻變化(相同時間變化量相同)還是先快后慢,先慢后快還是先慢再快再慢.
* 動畫的開始與結束的快慢,有五個預置分別為(下同):
* kCAMediaTimingFunctionLinear 線性,即勻速
* kCAMediaTimingFunctionEaseIn 先慢后快
* kCAMediaTimingFunctionEaseOut 先快后慢
* kCAMediaTimingFunctionEaseInEaseOut 先慢后快再慢
* 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
#pragma UIView實現動畫
- (void) animationWithView : (UIView *)view WithAnimationTransition : (UIViewAnimationTransition) transition
{
[UIView animateWithDuration:DURATION animations:^{
}]; }</pre>[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationTransition:transition forView:view cache:YES];
3.改變View的背景圖,便于切換時觀察
1 #pragma 給View添加背景圖 2 -(void)addBgImageWithImageName:(NSString *) imageName 3 { 4 self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:imageName]]; 5 }
二.調用上面的方法實現我們想要的動畫
1.我們在View上添加多個Button,給不同的Button設置不同的Tag值,然后再ViewController中綁定同一個方法,點擊不同的button實現不同的頁面切換效果。storyBoard上的控件效果如下圖所示:
2.下面我們就開始編寫點擊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,代碼如下:
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;</pre>
(2),獲取Button的Tag值:
1 UIButton *button = sender; 2 AnimationType animationType = button.tag;
(3).每次點擊button都改變subtype的值,包括上,左,下,右
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; }
(4),通過switch結合上邊的枚舉來判斷是那個按鈕點擊的
1 switch (animationType) 2 { 3 //各種Case,此處代碼下面會給出 4 }
3.調用我們封裝的運動方法,來實現動畫效果
(1),淡化效果
1 case Fade: 2 [self transitionWithType:kCATransitionFade WithSubtype:subtypeString ForView:self.view]; 3 break; 4
(2).Push效果
1 case Push: 2 [self transitionWithType:kCATransitionPush WithSubtype:subtypeString ForView:self.view]; 3 break; 4
效果如下:
(3).揭開效果:
1 case Reveal: 2 [self transitionWithType:kCATransitionReveal WithSubtype:subtypeString ForView:self.view]; 3 break;
效果圖如下:
(4).覆蓋效果
1 case MoveIn: 2 [self transitionWithType:kCATransitionMoveIn WithSubtype:subtypeString ForView:self.view]; 3 break; 4
效果圖如下:
(5).立方體效果
1 case Cube: 2 [self transitionWithType:@"cube" WithSubtype:subtypeString ForView:self.view]; 3 break;
效果如下:
(6).吮吸效果
1 case SuckEffect: 2 [self transitionWithType:@"suckEffect" WithSubtype:subtypeString ForView:self.view]; 3 break;
效果如下:
(7).翻轉效果
1 case OglFlip: 2 [self transitionWithType:@"oglFlip" WithSubtype:subtypeString ForView:self.view]; 3 break;
圖如下:
8.波紋效果
1 case RippleEffect: 2 [self transitionWithType:@"rippleEffect" WithSubtype:subtypeString ForView:self.view]; 3 break;
(9).翻頁和反翻頁效果
1 case PageCurl: 2 [self transitionWithType:@"pageCurl" WithSubtype:subtypeString ForView:self.view]; 3 break; 4 5 case PageUnCurl: 6 [self transitionWithType:@"pageUnCurl" WithSubtype:subtypeString ForView:self.view]; 7 break;
(10).相機打開效果
case CameraIrisHollowOpen: [self transitionWithType:@"cameraIrisHollowOpen" WithSubtype:subtypeString ForView:self.view]; break; case CameraIrisHollowClose: [self transitionWithType:@"cameraIrisHollowClose" WithSubtype:subtypeString ForView:self.view]; break;
(11),調用上面封裝的第二個動畫方法
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;
我把上面的Demo的源碼放在GitHub上,其地址為:https://github.com/lizelu/CATransitionDemo.git
來源: 青玉伏案