iOS 进度条、加载、安装动画的简单实现

首先看一下效果图：

下面贴上代码：

控制器ViewController：

#import <UIKit/UIKit.h>
@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 <UIKit/UIKit.h>
@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 <UIKit/UIKit.h>
@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 <UIKit/UIKit.h>
@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 <UIKit/UIKit.h>
@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服务器之家网站的支持！

原文链接：http://blog.csdn.net/hero_wqb/article/details/60143077