CountDownView的封装
今天在整理以前的代码的时候，把以前的一个控件再次封装了一次，这是一个倒计时的控件，可以用来作为一个进度条来使用。
CountDownView的四个基本类型以及一个自定义类型：
CountDownViewTypeCircle,
CountDownViewTypeRect,
CountDownViewTypeLine,
CountDownViewTypePercent
使用的时候，也是很方便的！
开源代码 - Github
使用的时候的代码
CountDownView * Circle =[CountDownView countDownViewWithFrame:CGRectMake(10, 40, 140, 140) type:CountDownViewTypeCircle andFinishblock:^(UIView *countDownView, CADisplayLink *link) {
NSLog(@"%s",__func__);
}];
[Circle showInKeyWindowTop];
CountDownView * Rect =[CountDownView countDownViewWithFrame:CGRectMake(160, 40, 140, 140) type:CountDownViewTypeRect andFinishblock:^(UIView *countDownView, CADisplayLink *link) {
NSLog(@"%s",__func__);
}];
[self.view addSubview:Rect];
CountDownView * downV =[CountDownView countDownViewWithFrame:CGRectMake(20, 200, 280, 80) type:CountDownViewTypeLine andFinishblock:^(UIView *countDownView, CADisplayLink *link) {
NSLog(@"%s",__func__);
}];
[downV showInKeyWindowTop];
//CountDownViewTypePercent
CountDownView * downV1 =[CountDownView countDownViewWithFrame:CGRectMake(20, 300, 280, 40) type:CountDownViewTypePercent andFinishblock:^(UIView *countDownView, CADisplayLink *link) {
NSLog(@"%s",__func__);
}];
[self.view addSubview:downV1];
downV1.lineWidth = 30;
源码
//
// CountDownView.h
// 倒计时
//
// Created by zzz on 15/10/9.
// Copyright (c) 2015年 zzz. All rights reserved.
//
#import <UIKit/UIKit.h>
typedef void(^FinishCountDownBlock)(UIView *countDownView,CADisplayLink *link);
typedef enum : NSUInteger {
CountDownViewTypeCircle,
CountDownViewTypeRect,
CountDownViewTypeLine,
CountDownViewTypePercent
} CountDownViewType;
@interface CountDownView : UIView
/**
* 倒计时最大时间
*/
@property(nonatomic, assign) CGFloat count; //默认为: 10.00s
/**
* 当前时间点（可以用作进度条）
*/
@property(nonatomic, assign) CGFloat currentCount;
@property(nonatomic, strong) UIColor * lineColor; //默认为: Red:0.4 green:0 blue:0.8 alpha:0.6
@property(nonatomic, strong) UIColor * textColor; //默认为: Red:0 green:0.4 blue:0.8 alpha:0.8
@property(nonatomic, strong) UIFont * textFont; //默认为: 高度的一半
@property(nonatomic, assign) CGFloat lineWidth; //默认为: 10.0
@property(nonatomic, assign) BOOL isTouchBegin; //默认为: YES
@property(nonatomic, assign) BOOL isTouchEnd; //默认为: YES
@property(nonatomic, assign) BOOL hiddenText; //默认为: NO
@property(nonatomic, assign) CountDownViewType type; // 默认为:CountDownViewTypeCircle
@property(nonatomic ,copy) FinishCountDownBlock finishblock;
+ (CountDownView *) countDownViewWithFrame:(CGRect)frame type:(CountDownViewType)type andFinishblock:(FinishCountDownBlock)block;
- (void)setFinishblock:(FinishCountDownBlock)finishblock;
- (void)beginCountDown;
/**
* 此方法必须要有keyWindow，才有用
*/
- (void)showInKeyWindowTop;
@end
//
// CountDownView.m
// 倒计时
//
// Created by zzz on 15/10/9.
// Copyright (c) 2015年 zzz. All rights reserved.
//
#import "CountDownView.h"
@interface CountDownView ()
@property (nonatomic, strong) CADisplayLink * link;
@property (nonatomic, strong) UILabel * label;
@property(nonatomic, strong) UITapGestureRecognizer * tap;
@property(nonatomic, strong) UITapGestureRecognizer * doubelTap;
@end
@implementation CountDownView
+ (CountDownView *)countDownViewWithFrame:(CGRect)frame type:(CountDownViewType)type andFinishblock:(FinishCountDownBlock)block{
CountDownView * downV = [[CountDownView alloc] initWithFrame:frame];
downV.type = type;
downV.finishblock = block;
return downV;
}
- (void)beginCountDown{
[self.link addToRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
}
- (void)showInKeyWindowTop{
if ([UIApplication sharedApplication].keyWindow) {
[[UIApplication sharedApplication].keyWindow.rootViewController.view addSubview:self];
}else{
NSLog(@"keyWindow = %@",[UIApplication sharedApplication].keyWindow);
}
}
#pragma mark - 复写方法
- (instancetype)initWithFrame:(CGRect)frame{
if (self = [super initWithFrame:frame]) {
self.backgroundColor = [UIColor colorWithRed:0.1 green:0.2 blue:0.6 alpha:0.4];
UITapGestureRecognizer * tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(beginAndEndLink)];
[self addGestureRecognizer:tap];
self.lineWidth = 10;
self.count = 10;
self.lineColor = [UIColor colorWithRed:0 green:0.4 blue:0.8 alpha:0.8];
self.isTouchBegin = YES;
self.isTouchEnd = YES;
}
return self;
}
- (void)layoutSubviews{
[super layoutSubviews];
self.label.frame = self.bounds;
}
// 开始画图
- (void)drawRect:(CGRect)rect{
if (self.type == CountDownViewTypePercent) {
self.label.text = [NSString stringWithFormat:@"%0.2f％",(1.0 - (_currentCount / self.count)) * 100];
}else{
int index = (self.count == _currentCount)?(int)_currentCount:(int)_currentCount +1;
index = _currentCount <= 0 ? 0 : index;
self.label.text = [NSString stringWithFormat:@"%d",index];
}
if (self.type == CountDownViewTypeLine || self.type == CountDownViewTypePercent) {
// 1.开启上下文
CGContextRef context = UIGraphicsGetCurrentContext();
CGFloat Width = CGRectGetWidth(self.bounds);
CGFloat height = CGRectGetHeight(self.bounds);
CGFloat Now = Width * (_currentCount / self.count);
CGContextAddRect(context, CGRectMake(0, height - self.lineWidth -5,Width - Now, self.lineWidth));
CGContextSetLineWidth(context, self.lineWidth);
[(self.lineColor)?self.lineColor:[UIColor blackColor] set];
CGContextSetLineCap(context, kCGLineCapRound);
CGContextFillPath(context);
return;
}
// 1.开启上下文
CGContextRef context = UIGraphicsGetCurrentContext();
CGFloat centerX = CGRectGetMidX(self.bounds);
CGFloat centerY = CGRectGetMidY(self.bounds);
CGFloat radius = (CGRectGetWidth(self.bounds) / 2.0) - 10;
CGFloat startAngle = M_PI * 1.5;
CGFloat endAngle = startAngle + (M_PI * 2.0) * (_currentCount / self.count);
// 0 表示顺时针
CGContextAddArc(context, centerX, centerY, radius, startAngle, endAngle, 0);
CGContextSetLineWidth(context, self.lineWidth);
[(self.lineColor)?self.lineColor:[UIColor blackColor] setStroke];
CGContextSetLineCap(context, kCGLineCapRound);
CGContextStrokePath(context);
}
#pragma mark - 私有方法
- (void)beginAndEndLink{
if (_link && self.isTouchEnd) {
[_link invalidate];
_link = nil;
return;
}else if (_currentCount <= 0 || (!self.isTouchBegin)) {
return;
}
[self.link addToRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
}
// 每秒调用60次
- (void) linkLoop{
[self setNeedsDisplay];
if (_currentCount <= 0) {
[_link invalidate];
if (self.finishblock) {
self.finishblock(self,_link);
}
return;
}
_currentCount -= 1 / 60.000000;
}
- (CADisplayLink *)link{
if (!_link) {
_link = [CADisplayLink displayLinkWithTarget:self selector:@selector(linkLoop)];
}
return _link;
}
- (UILabel *)label{
if (!_label) {
_label = [[UILabel alloc] init];
_label.textAlignment = NSTextAlignmentCenter;
_label.font = [UIFont systemFontOfSize:self.frame.size.height / 2.0];
[_label setTextColor:[UIColor colorWithRed:0.4 green:0 blue:0.8 alpha:0.6]];
[self addSubview:_label];
}
return _label;
}
- (void)setTextColor:(UIColor *)textColor{
_textColor = textColor;
[self.label setTextColor:_textColor];
}
- (void)setCount:(CGFloat)count{
_count = count;
_currentCount = _count;
}
- (void)setCurrentCount:(CGFloat)currentCount{
_currentCount = currentCount;
[self setNeedsDisplay];
}
- (void)setTextFont:(UIFont *)textFont{
_textFont = textFont;
self.label.font = textFont;
}
- (void)setType:(CountDownViewType)type{
_type = type;
if (_type == CountDownViewTypeCircle) {
self.clipsToBounds = YES;
self.layer.cornerRadius = self.frame.size.width/2.0;
} else if (_type == CountDownViewTypeRect){
self.clipsToBounds = YES;
self.layer.cornerRadius = 1;
}else if (_type == CountDownViewTypeRect){
}
}
- (void)setHiddenText:(BOOL)hiddenText{
_hiddenText = hiddenText;
self.label.hidden = _hiddenText;
}
@end
