首先看一下效果图：
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下面贴上代码：
控制器ViewController：
#import@interface ViewController : UIViewController @end /*** ---------------分割线--------------- ***/ #import "ViewController.h" #import "HWWaveView.h" #import "HWCircleView.h" #import "HWProgressView.h" #import "HWInstallView.h" @interface ViewController () @property (nonatomic, strong) NSTimer *timer; @property (nonatomic, weak) HWWaveView *waveView; @property (nonatomic, weak) HWCircleView *circleView; @property (nonatomic, weak) HWProgressView *progressView; @property (nonatomic, weak) HWInstallView *installView; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; //创建控件 [self creatControl]; //添加定时器 [self addTimer]; } - (void)creatControl { //波浪 HWWaveView *waveView = [[HWWaveView alloc] initWithFrame:CGRectMake(30, 100, 150, 150)]; [self.view addSubview:waveView]; self.waveView = waveView; //圆圈 HWCircleView *circleView = [[HWCircleView alloc] initWithFrame:CGRectMake(220, 100, 150, 150)]; [self.view addSubview:circleView]; self.circleView = circleView; //进度条 HWProgressView *progressView = [[HWProgressView alloc] initWithFrame:CGRectMake(30, 365, 150, 20)]; [self.view addSubview:progressView]; self.progressView = progressView; //加载安装效果 HWInstallView *installView = [[HWInstallView alloc] initWithFrame:CGRectMake(220, 300, 150, 150)]; [self.view addSubview:installView]; self.installView = installView; } - (void)addTimer { _timer = [NSTimer scheduledTimerWithTimeInterval:0.2f target:self selector:@selector(timerAction) userInfo:nil repeats:YES]; [[NSRunLoop mainRunLoop] addTimer:_timer forMode:NSRunLoopCommonModes]; } - (void)timerAction { _waveView.progress += 0.01; _circleView.progress += 0.01; _progressView.progress += 0.01; _installView.progress += 0.01; if (_waveView.progress >= 1) { [self removeTimer]; NSLog(@"完成"); } } - (void)removeTimer { [_timer invalidate]; _timer = nil; } @end 波浪HWWaveView： [objc] view plain copy 在CODE上查看代码片派生到我的代码片 #import @interface HWWaveView : UIView @property (nonatomic, assign) CGFloat progress; @end /*** ---------------分割线--------------- ***/ #import "HWWaveView.h" #define KHWWaveFillColor [UIColor groupTableViewBackgroundColor] //填充颜色 #define KHWWaveTopColor [UIColor colorWithRed:0/255.0 green:191/255.0 blue:255/255.0 alpha:1.0f] //前面波浪颜色 #define KHWWaveBottomColor [UIColor colorWithRed:0/255.0 green:191/255.0 blue:255/255.0 alpha:0.4f] //后面波浪颜色 @interface HWWaveView () @property (nonatomic, strong) CADisplayLink *displayLink; @property (nonatomic, assign) CGFloat wave_amplitude;//振幅a（y = asin(wx+φ) + k） @property (nonatomic, assign) CGFloat wave_cycle;//周期w @property (nonatomic, assign) CGFloat wave_h_distance;//两个波水平之间偏移 @property (nonatomic, assign) CGFloat wave_v_distance;//两个波竖直之间偏移 @property (nonatomic, assign) CGFloat wave_scale;//水波速率 @property (nonatomic, assign) CGFloat wave_offsety;//波峰所在位置的y坐标 @property (nonatomic, assign) CGFloat wave_move_width;//移动的距离，配合速率设置 @property (nonatomic, assign) CGFloat wave_offsetx;//偏移 @property (nonatomic, assign) CGFloat offsety_scale;//上升的速度 @end @implementation HWWaveView - (instancetype)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { self.backgroundColor = [UIColor clearColor]; //初始化信息 [self initInfo]; } return self; } - (void)initInfo { //进度 _progress = 0; //振幅 _wave_amplitude = self.frame.size.height / 25; //周期 _wave_cycle = 22 * M_PI / (self.frame.size.width * 0.9); //两个波水平之间偏移 _wave_h_distance = 22 * M_PI / _wave_cycle * 0.6; //两个波竖直之间偏移 _wave_v_distance = _wave_amplitude * 0.4; //移动的距离，配合速率设置 _wave_move_width = 0.5; //水波速率 _wave_scale = 0.4; //上升的速度 _offsety_scale = 0.1; //波峰所在位置的y坐标，刚开始的时候_wave_offsety是最大值 _wave_offsety = (1 - _progress) * (self.frame.size.height + 22 * _wave_amplitude); [self addDisplayLinkAction]; } - (void)addDisplayLinkAction { _displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(displayLinkAction)]; [_displayLink addToRunLoop:[NSRunLoop mainRunLoop] forMode:NSRunLoopCommonModes]; } - (void)displayLinkAction { _wave_offsetx += _wave_move_width * _wave_scale; //完成 if (_wave_offsety <= 0.01) [self removeDisplayLinkAction]; [self setNeedsDisplay]; } - (void)removeDisplayLinkAction { [_displayLink invalidate]; _displayLink = nil; } - (void)drawRect:(CGRect)rect { UIBezierPath *path = [UIBezierPath bezierPathWithOvalInRect:rect]; [KHWWaveFillColor setFill]; [path fill]; [path addClip]; //绘制两个波形图 [self drawWaveColor:KHWWaveTopColor offsetx:0 offsety:0]; [self drawWaveColor:KHWWaveBottomColor offsetx:_wave_h_distance offsety:_wave_v_distance]; } - (void)drawWaveColor:(UIColor *)color offsetx:(CGFloat)offsetx offsety:(CGFloat)offsety { //波浪动画，进度的实际操作范围是，多加上两个振幅的高度，到达设置进度的位置y CGFloat end_offY = (1 - _progress) * (self.frame.size.height + 22 * _wave_amplitude); if (_wave_offsety != end_offY) { if (end_offY < _wave_offsety) { _wave_offsety = MAX(_wave_offsety -= (_wave_offsety - end_offY) * _offsety_scale, end_offY); }else { _wave_offsety = MIN(_wave_offsety += (end_offY - _wave_offsety) * _offsety_scale, end_offY); } } UIBezierPath *wavePath = [UIBezierPath bezierPath]; for (float next_x = 0.f; next_x <= self.frame.size.width; next_x ++) { //正弦函数，绘制波形 CGFloat next_y = _wave_amplitude * sin(_wave_cycle * next_x + _wave_offsetx + offsetx / self.bounds.size.width * 22 * M_PI) + _wave_offsety + offsety; if (next_x == 0) { [wavePath moveToPoint:CGPointMake(next_x, next_y - _wave_amplitude)]; }else { [wavePath addLineToPoint:CGPointMake(next_x, next_y - _wave_amplitude)]; } } [wavePath addLineToPoint:CGPointMake(self.frame.size.width, self.frame.size.height)]; [wavePath addLineToPoint:CGPointMake(0, self.bounds.size.height)]; [color set]; [wavePath fill]; } @end 圆圈HWCircleView： [objc] view plain copy 在CODE上查看代码片派生到我的代码片 #import @interface HWCircleView : UIView @property (nonatomic, assign) CGFloat progress; @end /*** ---------------分割线--------------- ***/ #import "HWCircleView.h" #define KHWCircleLineWidth 10.0f #define KHWCircleFont [UIFont boldSystemFontOfSize:26.0f] #define KHWCircleColor [UIColor colorWithRed:0/255.0 green:191/255.0 blue:255/255.0 alpha:1] @interface HWCircleView () @property (nonatomic, weak) UILabel *cLabel; @end @implementation HWCircleView - (instancetype)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { self.backgroundColor = [UIColor clearColor]; //百分比标签 UILabel *cLabel = [[UILabel alloc] initWithFrame:self.bounds]; cLabel.font = KHWCircleFont; cLabel.textColor = KHWCircleColor; cLabel.textAlignment = NSTextAlignmentCenter; [self addSubview:cLabel]; self.cLabel = cLabel; } return self; } - (void)setProgress:(CGFloat)progress { _progress = progress; _cLabel.text = [NSString stringWithFormat:@"%d%%", (int)floor(progress * 100)]; [self setNeedsDisplay]; } - (void)drawRect:(CGRect)rect { //路径 UIBezierPath *path = [[UIBezierPath alloc] init]; //线宽 path.lineWidth = KHWCircleLineWidth; //颜色 [KHWCircleColor set]; //拐角 path.lineCapStyle = kCGLineCapRound; path.lineJoinStyle = kCGLineJoinRound; //半径 CGFloat radius = (MIN(rect.size.width, rect.size.height) - KHWCircleLineWidth) * 0.5; //画弧（参数：中心、半径、起始角度(3点钟方向为0)、结束角度、是否顺时针） [path addArcWithCenter:(CGPoint){rect.size.width * 0.5, rect.size.height * 0.5} radius:radius startAngle:M_PI * 1.5 endAngle:M_PI * 1.5 + M_PI * 22 * _progress clockwise:YES]; //连线 [path stroke]; } @end 进度条HWProgressView： [objc] view plain copy 在CODE上查看代码片派生到我的代码片 #import @interface HWProgressView : UIView @property (nonatomic, assign) CGFloat progress; @end /*** ---------------分割线--------------- ***/ #import "HWProgressView.h" #define KProgressBorderWidth 2.0f #define KProgressPadding 1.0f #define KProgressColor [UIColor colorWithRed:0/255.0 green:191/255.0 blue:255/255.0 alpha:1] @interface HWProgressView () @property (nonatomic, weak) UIView *tView; @end @implementation HWProgressView - (instancetype)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { //边框 UIView *borderView = [[UIView alloc] initWithFrame:self.bounds]; borderView.layer.cornerRadius = self.bounds.size.height * 0.5; borderView.layer.masksToBounds = YES; borderView.backgroundColor = [UIColor whiteColor]; borderView.layer.borderColor = [KProgressColor CGColor]; borderView.layer.borderWidth = KProgressBorderWidth; [self addSubview:borderView]; //进度 UIView *tView = [[UIView alloc] init]; tView.backgroundColor = KProgressColor; tView.layer.cornerRadius = (self.bounds.size.height - (KProgressBorderWidth + KProgressPadding) * 2) * 0.5; tView.layer.masksToBounds = YES; [self addSubview:tView]; self.tView = tView; } return self; } - (void)setProgress:(CGFloat)progress { _progress = progress; CGFloat margin = KProgressBorderWidth + KProgressPadding; CGFloat maxWidth = self.bounds.size.width - margin * 2; CGFloat heigth = self.bounds.size.height - margin * 2; _tView.frame = CGRectMake(margin, margin, maxWidth * progress, heigth); } @end 加载安装效果HWInstallView： [objc] view plain copy 在CODE上查看代码片派生到我的代码片 #import @interface HWInstallView : UIView @property (nonatomic, assign) CGFloat progress; @end /*** ---------------分割线--------------- ***/ #import "HWInstallView.h" #define KHWInstallViewMargin 10 #define KHWInstallColor [UIColor colorWithRed:0/255.0 green:191/255.0 blue:255/255.0 alpha:1] @implementation HWInstallView - (instancetype)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { self.backgroundColor = [UIColor clearColor]; } return self; } - (void)setProgress:(CGFloat)progress { _progress = progress; [self setNeedsDisplay]; } - (void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); CGFloat xCenter = rect.size.width * 0.5; CGFloat yCenter = rect.size.height * 0.5; CGFloat radius = MIN(rect.size.width, rect.size.height) * 0.5 - KHWInstallViewMargin; //背景遮罩 [KHWInstallColor set]; CGFloat lineW = MAX(rect.size.width, rect.size.height) * 0.5; CGContextSetLineWidth(context, lineW); CGContextAddArc(context, xCenter, yCenter, radius + lineW * 0.5 + 5, 0, M_PI * 2, 1); CGContextStrokePath(context); //进程圆 CGContextSetLineWidth(context, 1); CGContextMoveToPoint(context, xCenter, yCenter); CGContextAddLineToPoint(context, xCenter, 0); CGFloat endAngle = - M_PI * 0.5 + _progress * M_PI * 2 + 0.001; CGContextAddArc(context, xCenter, yCenter, radius, - M_PI * 0.5, endAngle, 1); CGContextFillPath(context); } @end
以上所述是小编给大家介绍的iOS 进度条、加载、安装动画的简单实现，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对创新互联网站的支持！
