做企业网站需要准备什么,行业门户网站建设费用,一建报名时间2022年,黄骅贴吧二手房买卖UI效果 实现的思路
就是通过贝塞尔曲线画出时间轴的圆环的路径#xff0c;然后 使用CAShaper来渲染UI#xff0c;再通过 animation.beginTime [cilrclLayer convertTime:CACurrentMediaTime() fromLayer:nil] circleTimeOffset 来设置每个圆环的动画开始时间#xff0c; …UI效果 实现的思路
就是通过贝塞尔曲线画出时间轴的圆环的路径然后 使用CAShaper来渲染UI再通过 animation.beginTime [cilrclLayer convertTime:CACurrentMediaTime() fromLayer:nil] circleTimeOffset 来设置每个圆环的动画开始时间 每个地方都是有两层layer的一层是底部灰色样式的即没有到达时候的颜色一层是到达得阶段的颜色 到达的layer在上面如果要开启动画我们就得先将 到达的layer隐藏掉然后开始动画的时候将对应的那一条展示开启动画的时候将hidden置为NO这时候其实layer是展示不了的不会整个展示因为我们添加了strokeEnd的动画他会随者动画的进行而逐渐展示所以我们在动画代理方法animationDidStart中将layer 设置为可见如果没有设置动画代理也可以在添加动画的时候设置为可见
代码
//
// LBTimeView.m
// LBTimeLine
//
// Created by mac on 2024/6/9.
//#import LBTimeView.h
#define ScreenWidth [UIScreen mainScreen].bounds.size.width
#define RGB(r, g, b) [UIColor colorWithRed:(r)/255.f green:(g)/255.f blue:(b)/255.f alpha:1.f]
#define SizeScale (([UIScreen mainScreen].bounds.size.width 320) ? [UIScreen mainScreen].bounds.size.width/320 : 1)const float BETTWEEN_LABEL_OFFSET 20;
const float LINE_WIDTH 1.9;
const float CIRCLE_RADIUS 3.7;
const float INITIAL_PROGRESS_CONTAINER_WIDTH 20.0;
const float PROGRESS_VIEW_CONTAINER_LEFT 51.0;
const float VIEW_WIDTH 225.0;interface LBTimeView ()
{CGPoint lastpoint;NSMutableArray *layers;NSMutableArray *circleLayers;int layerCounter;int circleCounter;CGFloat timeOffset;CGFloat leftWidth;CGFloat rightWidth;CGFloat viewWidth;
}endimplementation LBTimeView-(id)initWithFrame:(CGRect)frame sum:(NSInteger)sum current:(NSInteger)current{self [super initWithFrame:frame];if (self) {self.frame frame;[self configureTimeLineWithNum:sum andCurrentNum:current];}return self;// Do any additional setup after loading the view, typically from a nib.
}- (void)configureTimeLineWithNum:(NSInteger)sum andCurrentNum:(NSInteger)currentStatus {// NSInteger currentStatus 3;circleLayers [[NSMutableArray alloc] init];layers [[NSMutableArray alloc] init];CGFloat U (ScreenWidth - 80- sum1)/(sum - 1);CGFloat betweenLineOffset 0;//CGFloat totlaHeight 8;// CGFloat yCenter - 48 (ScreenWidth - 248)/2;CGFloat yCenter 40;// CGFloat xCenter;UIColor *strokeColor;CGPoint toPoint;CGPoint fromPoint;int i 0;for (int j 0;j sum;j ) {//configure circlestrokeColor i currentStatus ? RGB(224, 0, 30) : RGB(233, 233, 233);UIBezierPath *circle [UIBezierPath bezierPath];[self configureBezierCircle:circle withCenterY:yCenter];CAShapeLayer *circleLayer [self getLayerWithCircle:circle andStrokeColor:strokeColor];//[circleLayers addObject:circleLayer];//add static background gray circleCAShapeLayer *grayStaticCircleLayer [self getLayerWithCircle:circle andStrokeColor:RGB(233, 233, 233)];[self.layer addSublayer:grayStaticCircleLayer];[self.layer addSublayer:circleLayer];//configure lineif (i 0) {fromPoint lastpoint;toPoint CGPointMake(yCenter - CIRCLE_RADIUS,60*SizeScale);lastpoint CGPointMake( yCenter CIRCLE_RADIUS 1,60*SizeScale);UIBezierPath *line [self getLineWithStartPoint:fromPoint endPoint:toPoint];CAShapeLayer *lineLayer [self getLayerWithLine:line andStrokeColor:strokeColor];// CAShapeLayer *lineLayer2 [self getLayerWithLine:line andStrokeColor:strokeColor];[layers addObject:lineLayer];//add static background gray lineCAShapeLayer *grayStaticLineLayer [self getLayerWithLine:line andStrokeColor:RGB(233, 233, 233)];[self.layer addSublayer:grayStaticLineLayer];[self.layer addSublayer:lineLayer];} else {lastpoint CGPointMake( yCenter CIRCLE_RADIUS1,60*SizeScale);}betweenLineOffset BETTWEEN_LABEL_OFFSET;yCenter U;i;}
}- (CAShapeLayer *)getLayerWithLine:(UIBezierPath *)line andStrokeColor:(UIColor *)strokeColor {CAShapeLayer *lineLayer [CAShapeLayer layer];lineLayer.path line.CGPath;lineLayer.strokeColor strokeColor.CGColor;lineLayer.fillColor nil;lineLayer.lineWidth 1.4;return lineLayer;
}- (UIBezierPath *)getLineWithStartPoint:(CGPoint)start endPoint:(CGPoint)end {UIBezierPath *line [UIBezierPath bezierPath];[line moveToPoint:start];[line addLineToPoint:end];return line;
}- (CAShapeLayer *)getLayerWithCircle:(UIBezierPath *)circle andStrokeColor:(UIColor *)strokeColor {CAShapeLayer *circleLayer [CAShapeLayer layer];circleLayer.path circle.CGPath;circleLayer.strokeColor strokeColor.CGColor;circleLayer.fillColor nil;circleLayer.lineWidth LINE_WIDTH;circleLayer.lineJoin kCALineJoinBevel;return circleLayer;
}- (void)configureBezierCircle:(UIBezierPath *)circle withCenterY:(CGFloat)centerY {[circle addArcWithCenter:CGPointMake( centerY,60*SizeScale)radius:CIRCLE_RADIUSstartAngle:M_PI_2endAngle:-M_PI_2clockwise:YES];[circle addArcWithCenter:CGPointMake(centerY,60*SizeScale)radius:CIRCLE_RADIUSstartAngle:-M_PI_2endAngle:M_PI_2clockwise:YES];
}- (void)startAnimatingWithCurrentIndex:(NSInteger)index
{for (CAShapeLayer *layer in layers) {layer.hidden YES;}[self startAnimatingLayers:circleLayers forStatus:index];
}- (void)startAnimatingLayers:(NSArray *)layersToAnimate forStatus:(NSInteger)currentStatus {float circleTimeOffset 1;circleCounter 0;int i 1;//add with animationfor (CAShapeLayer *cilrclLayer in layersToAnimate) {[self.layer addSublayer:cilrclLayer];CABasicAnimation *animation [CABasicAnimation animationWithKeyPath:strokeEnd];animation.duration 0.2;animation.beginTime [cilrclLayer convertTime:CACurrentMediaTime() fromLayer:nil] circleTimeOffset;animation.fromValue [NSNumber numberWithFloat:0.0f];animation.toValue [NSNumber numberWithFloat:1.0f];animation.fillMode kCAFillModeForwards;animation.delegate (id CAAnimationDelegate) self;circleTimeOffset .4;[cilrclLayer setHidden:YES];[cilrclLayer addAnimation:animation forKey:strokeCircleAnimation];if (self.lastBlink i currentStatus i ! [layersToAnimate count]) {CABasicAnimation *strokeAnim [CABasicAnimation animationWithKeyPath:strokeColor];strokeAnim.fromValue (id) [UIColor orangeColor].CGColor;strokeAnim.toValue (id) [UIColor clearColor].CGColor;strokeAnim.duration 1.0;strokeAnim.repeatCount HUGE_VAL;strokeAnim.autoreverses NO;[cilrclLayer addAnimation:strokeAnim forKey:animateStrokeColor];}i;}
}- (void)animationDidStart:(CAAnimation *)anim {if (circleCounter circleLayers.count) {if (anim [circleLayers[circleCounter] animationForKey:strokeCircleAnimation]) {[circleLayers[circleCounter] setHidden:NO];circleCounter;}}
}- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag {if (layerCounter layers.count) {return;}CAShapeLayer *lineLayer layers[layerCounter];CABasicAnimation *animation [CABasicAnimation animationWithKeyPath:strokeEnd];animation.duration 0.200;animation.fromValue [NSNumber numberWithFloat:0.0f];animation.toValue [NSNumber numberWithFloat:1.0f];animation.fillMode kCAFillModeForwards;lineLayer.hidden NO;[self.layer addSublayer:lineLayer];[lineLayer addAnimation:animation forKey:strokeEndAnimation];layerCounter;
}end
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