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我正在使用Quiz相关的应用程序。这里将显示自定义的圆形进度条，其基于正确答案分隔符的百分比值和总问题乘以100. 然后将结果值作为百分比，然后将结果值除以100得到浮点值，因为进度动画值是“0.0到1.0” 这里我使用库“DACircularProgressView”。 现在使用顺时针动画的进度。但我需要反时针动画。如何使用反顺时针动画显示自定义圆形进度条？
如果您有任何人知道善意提供的信息。我真的不知道如何改变“DACircularProgressView”中的旋转动画。
//
// DACircularProgressView.h
// DACircularProgress
//
// Created by Daniel Amitay on 2/6/12.
// Copyright (c) 2012 Daniel Amitay. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface DACircularProgressView : UIView
@property(nonatomic, strong) UIColor *trackTintColor UI_APPEARANCE_SELECTOR;
@property(nonatomic, strong) UIColor *progressTintColor UI_APPEARANCE_SELECTOR;
@property(nonatomic) NSInteger roundedCorners UI_APPEARANCE_SELECTOR; // Can not use BOOL with UI_APPEARANCE_SELECTOR :-(
@property(nonatomic) CGFloat thicknessRatio UI_APPEARANCE_SELECTOR;
@property(nonatomic) CGFloat progress;
@property(nonatomic) CGFloat indeterminateDuration UI_APPEARANCE_SELECTOR;
@property(nonatomic) NSInteger indeterminate UI_APPEARANCE_SELECTOR; // Can not use BOOL with UI_APPEARANCE_SELECTOR :-(
- (void)setProgress:(CGFloat)progress animated:(BOOL)animated;
@end
//
// DACircularProgressView.m
// DACircularProgress
//
// Created by Daniel Amitay on 2/6/12.
// Copyright (c) 2012 Daniel Amitay. All rights reserved.
//
#import "DACircularProgressView.h"
#import <QuartzCore/QuartzCore.h>
@interface DACircularProgressLayer : CALayer
@property(nonatomic, strong) UIColor *trackTintColor;
@property(nonatomic, strong) UIColor *progressTintColor;
@property(nonatomic) NSInteger roundedCorners;
@property(nonatomic) CGFloat thicknessRatio;
@property(nonatomic) CGFloat progress;
@end
@implementation DACircularProgressLayer
@dynamic trackTintColor;
@dynamic progressTintColor;
@dynamic roundedCorners;
@dynamic thicknessRatio;
@dynamic progress;
+ (BOOL)needsDisplayForKey:(NSString *)key
{
return [key isEqualToString:@"progress"] ? YES : [super needsDisplayForKey:key];
}
- (void)drawInContext:(CGContextRef)context
{
CGRect rect = self.bounds;
CGPoint centerPoint = CGPointMake(rect.size.height/2, rect.size.width/2);
CGFloat radius = MIN(rect.size.height, rect.size.width)/2;
CGFloat progress = MIN(self.progress, 1.f - FLT_EPSILON);
CGFloat radians = (progress * 2 * M_PI) - M_PI_2;
CGContextSetFillColorWithColor(context, self.trackTintColor.CGColor);
CGMutablePathRef trackPath = CGPathCreateMutable();
CGPathMoveToPoint(trackPath, NULL, centerPoint.x, centerPoint.y);
CGPathAddArc(trackPath, NULL, centerPoint.x, centerPoint.y, radius, 3 * M_PI_2, -M_PI_2, NO);
CGPathCloseSubpath(trackPath);
CGContextAddPath(context, trackPath);
CGContextFillPath(context);
CGPathRelease(trackPath);
if (progress > 0.f)
{
CGContextSetFillColorWithColor(context, self.progressTintColor.CGColor);
CGMutablePathRef progressPath = CGPathCreateMutable();
CGPathMoveToPoint(progressPath, NULL, centerPoint.x, centerPoint.y);
CGPathAddArc(progressPath, NULL, centerPoint.x, centerPoint.y, radius, 3 * M_PI_2, radians, NO);
CGPathCloseSubpath(progressPath);
CGContextAddPath(context, progressPath);
CGContextFillPath(context);
CGPathRelease(progressPath);
}
if (progress > 0.f && self.roundedCorners)
{
CGFloat pathWidth = radius * self.thicknessRatio;
CGFloat xOffset = radius * (1.f + ((1 - (self.thicknessRatio/2.f)) * cosf(radians)));
CGFloat yOffset = radius * (1.f + ((1 - (self.thicknessRatio/2.f)) * sinf(radians)));
CGPoint endPoint = CGPointMake(xOffset, yOffset);
CGContextAddEllipseInRect(context, CGRectMake(centerPoint.x - pathWidth/2, 0, pathWidth, pathWidth));
CGContextFillPath(context);
CGContextAddEllipseInRect(context, CGRectMake(endPoint.x - pathWidth/2, endPoint.y - pathWidth/2, pathWidth, pathWidth));
CGContextFillPath(context);
}
CGContextSetBlendMode(context, kCGBlendModeClear);
CGFloat innerRadius = radius * (1.f - self.thicknessRatio);
CGPoint newCenterPoint = CGPointMake(centerPoint.x - innerRadius, centerPoint.y - innerRadius);
CGContextAddEllipseInRect(context, CGRectMake(newCenterPoint.x, newCenterPoint.y, innerRadius * 2, innerRadius * 2));
CGContextFillPath(context);
}
@end
@implementation DACircularProgressView
+ (void) initialize
{
if (self != [DACircularProgressView class])
return;
id appearance = [self appearance];
[appearance setTrackTintColor:[[UIColor whiteColor] colorWithAlphaComponent:0.3f]];
[appearance setProgressTintColor:[UIColor whiteColor]];
[appearance setThicknessRatio:0.3f];
[appearance setRoundedCorners:NO];
[appearance setIndeterminateDuration:2.0f];
[appearance setIndeterminate:NO];
}
+ (Class)layerClass
{
return [DACircularProgressLayer class];
}
- (DACircularProgressLayer *)circularProgressLayer
{
return (DACircularProgressLayer *)self.layer;
}
- (id)init
{
return [self initWithFrame:CGRectMake(0.0f, 0.0f, 40.0f, 40.0f)];
}
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self)
{
self.backgroundColor = [UIColor clearColor];
}
return self;
}
- (void)didMoveToWindow
{
self.circularProgressLayer.contentsScale = [UIScreen mainScreen].scale;
}
#pragma mark - Progress
-(CGFloat)progress
{
return self.circularProgressLayer.progress;
}
- (void)setProgress:(CGFloat)progress
{
[self setProgress:progress animated:NO];
}
- (void)setProgress:(CGFloat)progress animated:(BOOL)animated
{
CGFloat pinnedProgress = MIN(MAX(progress, 0.f), 1.f);
if (animated)
{
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"progress"];
animation.duration = fabsf(self.progress - pinnedProgress); // Same duration as UIProgressView animation
animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
animation.fromValue = [NSNumber numberWithFloat:self.progress];
animation.toValue = [NSNumber numberWithFloat:pinnedProgress];
[self.circularProgressLayer addAnimation:animation forKey:@"progress"];
// [self.circularProgressLayer setFrame:CGRectMake(3, 3, 40, 40)];
}
else
{
[self.circularProgressLayer setNeedsDisplay];
}
self.circularProgressLayer.progress = pinnedProgress;
}
#pragma mark - UIAppearance methods
- (UIColor *)trackTintColor
{
return self.circularProgressLayer.trackTintColor;
}
- (void)setTrackTintColor:(UIColor *)trackTintColor
{
self.circularProgressLayer.trackTintColor = trackTintColor;
[self.circularProgressLayer setNeedsDisplay];
}
- (UIColor *)progressTintColor
{
return self.circularProgressLayer.progressTintColor;
}
- (void)setProgressTintColor:(UIColor *)progressTintColor
{
self.circularProgressLayer.progressTintColor = progressTintColor;
[self.circularProgressLayer setNeedsDisplay];
}
- (NSInteger)roundedCorners
{
return self.roundedCorners;
}
-(void)setRoundedCorners:(NSInteger)roundedCorners
{
self.circularProgressLayer.roundedCorners = roundedCorners;
[self.circularProgressLayer setNeedsDisplay];
}
-(CGFloat)thicknessRatio
{
return self.circularProgressLayer.thicknessRatio;
}
- (void)setThicknessRatio:(CGFloat)thicknessRatio
{
self.circularProgressLayer.thicknessRatio = MIN(MAX(thicknessRatio, 0.f), 1.f);
[self.circularProgressLayer setNeedsDisplay];
}
- (NSInteger)indeterminate
{
CAAnimation *spinAnimation = [self.layer animationForKey:@"indeterminateAnimation"];
return spinAnimation;
}
- (void)setIndeterminate:(NSInteger)indeterminate
{
if (indeterminate && !self.indeterminate)
{
CABasicAnimation *spinAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
spinAnimation.byValue = [NSNumber numberWithFloat:2.0f*M_PI];
spinAnimation.duration = self.indeterminateDuration;
spinAnimation.repeatCount = HUGE_VALF;
[self.layer addAnimation:spinAnimation forKey:@"indeterminateAnimation"];
}
else
{
[self.layer removeAnimationForKey:@"indeterminateAnimation"];
}
}
@end
在我自己的类，下面的代码
self.largeProgressView = [[DACircularProgressView alloc] initWithFrame:CGRectMake(10.0f, 85.0f, 78.0f, 78.0f)];
self.largeProgressView.roundedCorners = NO;
self.largeProgressView.trackTintColor = THIK_GRAY_COLOR;
self.largeProgressView.progressTintColor = LIGHT_GREEN_COLOR;
self.largeProgressView.thicknessRatio = 0.2f;
[self.largeProgressView setBackgroundColor:[UIColor clearColor]];
[resultatsCategoryView addSubview:self.largeProgressView];
total = [TotalQuestionsCount floatValue];
current = [CorrectAnswersCount floatValue];
percentageCompleted = current/total * 100;
percentageCompleted = percentageCompleted/100;
//NSLog(@"percentageCompleted = %f",percentageCompleted);
for (DACircularProgressView *progressView in [NSArray arrayWithObjects:self.largeProgressView, nil])
{
CGFloat progress = percentageCompleted;
//NSLog(@"progress = %f",progress);
[progressView setProgress:progress animated:YES];
if (progressView.progress >= 1.0f && [self.timer isValid])
{
[progressView setProgress:0.f animated:YES];
}
}
明智嘿任何机构请给一些建议，这是当务之急。 – raman
我发布了答案检查它，可能会帮助你.. :) –
@Shan谢谢你的回复。我会查一下。 – raman