使用UIBezierPath实现ProgressView实现的效果如下:
界面采用UITableView和TabelViewCell的实现,红色的视图采用UIBezierPath绘制.注意红色的部分左上角,左下角是直角哟!!!!不多说<这里才是用UIBezierPath实现的真正愿意啦!!!😆>,代码如下:
控制器代码:
//
// ViewController.m
// ProgressViewDemo
//
// Created by 思 彭 on 2017/4/20.
// Copyright © 2017年 思 彭. All rights reserved.
//
#import "ViewController.h"
#import "ProgressTableViewCell.h"
@interface ViewController ()<UITableViewDelegate, UITableViewDataSource>
@property (nonatomic, strong) UITableView *tableView;
@property (nonatomic, strong) CAShapeLayer *layer;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.navigationItem.title = @"ProgressDemo";
[self setUI];
}
#pragma mark - 设置界面
- (void)setUI {
self.tableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) style:UITableViewStyleGrouped];
self.tableView.delegate = self;
self.tableView.dataSource = self;
self.tableView.backgroundColor = [UIColor clearColor];
// 注册cell
[self.tableView registerClass:[ProgressTableViewCell class] forCellReuseIdentifier:@"cell"];
self.tableView.tableFooterView = [[UIView alloc]init];
[self.view addSubview:self.tableView];
}
#pragma mark - UITableViewDataSource
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 5;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
ProgressTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];
return cell;
}
#pragma mark - UITableViewDelegate
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
return 0.001f;;
}
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section {
return 0.0001f;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return 44;
}
@end
TabelViewCell代码:
//
// ProgressTableViewCell.m
// ProgressViewDemo
//
// Created by 思 彭 on 2017/4/21.
// Copyright © 2017年 思 彭. All rights reserved.
//
#import "ProgressTableViewCell.h"
#import "Masonry.h"
#import "ProgressView.h"
@interface ProgressTableViewCell ()
@property (nonatomic, strong) UILabel *titleLabel;
@property (nonatomic, strong) ProgressView *progressView;
@property (nonatomic, strong) UILabel *numberLabel;
@end
@implementation ProgressTableViewCell
- (void)awakeFromNib {
[super awakeFromNib];
// Initialization code
}
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
[self createSubViews];
[self layOut];
}
return self;
}
- (void)createSubViews {
self.titleLabel = [[UILabel alloc]init];
self.titleLabel.font = [UIFont systemFontOfSize:16];
self.titleLabel.text = @"西单大悦城";
self.titleLabel.textAlignment = NSTextAlignmentLeft;
[self.contentView addSubview:self.titleLabel];
self.progressView = [[ProgressView alloc]init];
self.progressView.backgroundColor = [UIColor whiteColor];
self.progressView.progress = arc4random_uniform(100) + 40;
[self.contentView addSubview:self.progressView];
self.numberLabel = [[UILabel alloc]init];
self.numberLabel.font = [UIFont systemFontOfSize:16];
self.numberLabel.text = @"￥2000";
self.numberLabel.textAlignment = NSTextAlignmentRight;
[self.contentView addSubview:self.numberLabel];
}
- (void)layOut {
[self.titleLabel mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.mas_equalTo(self.contentView).offset(10);
make.centerY.mas_equalTo(self.contentView);
// make.width.greaterThanOrEqualTo(@(70));
make.width.mas_equalTo(self.contentView.frame.size.width * 0.3);
}];
[self.progressView mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.mas_equalTo(self.titleLabel.mas_right).offset(10);
make.height.mas_equalTo(20);
make.centerY.mas_equalTo(self.titleLabel.mas_centerY);
make.width.mas_equalTo(self.contentView.frame.size.width * 0.4);
}];
[self.numberLabel mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.mas_equalTo(self.progressView.mas_right).offset(10);
make.centerY.mas_equalTo(self.contentView);
make.right.mas_equalTo(self.contentView).offset(-10);
}];
}
@end
ProgressView代码:
//
// ProgressView.m
// ProgressViewDemo
//
// Created by 思 彭 on 2017/4/20.
// Copyright © 2017年 思 彭. All rights reserved.
//
#import "ProgressView.h"
@interface ProgressView ()
@end
@implementation ProgressView
-(void)drawRect:(CGRect)rect{
// 创建贝瑟尔路径
/*
CGFloat width = self.progress / rect.size.width * rect.size.width;
// 显示的宽度 = 服务器返回的数值 / 设置的总宽度 * 满值;
显示的宽度= 满值 * 比例值
比例值 = 服务器返回的宽度 / 满值
*/
CGFloat width = rect.size.width * self.progress / rect.size.width;
// 显示的宽度 = 服务器返回的数值 * 设置的总宽度 / 满值;
UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(0, 0, width, rect.size.height) byRoundingCorners:UIRectCornerTopRight|UIRectCornerBottomRight cornerRadii:CGSizeMake(rect.size.height, rect.size.height)];
[[UIColor redColor] setFill];
[path fill];
}
- (void)setProgress:(CGFloat)progress{
_progress = progress;
// 重绘，系统会先创建与view相关联的上下文，然后再调用drawRect
[self setNeedsDisplay];
}
@end
是不是超级简单。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
