子类继承父类实现父类的代理方法
父类提供虚函数(OC中称为代理方法),子类继承后实现虚函数来实现特定的功能.
父类方法:
NumberCount.h 与 NumberCount.m
//
// NumberCount.h
// YXMWeather
//
// Created by XianMingYou on 15/2/18.
// Copyright (c) 2015年 XianMingYou. All rights reserved.
//
#import <Foundation/Foundation.h>
@class NumberCount;
@protocol NumberCountDelegate <NSObject>
@optional
/**
* 最原始的方法
*
* @param numberCount 对象自己
* @param number 变化的值
*/
- (void)numberCount:(NumberCount *)numberCount currentNumber:(NSNumber *)number;
/**
* 子类可以实现的方法
*
* @param numberCount 对象自己
* @param string 子类返回的富文本
*/
- (void)numberCount:(NumberCount *)numberCount currentSting:(NSAttributedString *)string;
@end
@interface NumberCount : NSObject
/**
* 代理
*/
@property (nonatomic, weak) id<NumberCountDelegate> delegate;
/**
* 动画实体
*/
@property (nonatomic, strong) POPBasicAnimation *conutAnimation;
/**
* 初始值
*/
@property (nonatomic) CGFloat fromValue;
/**
* 结束值
*/
@property (nonatomic) CGFloat toValue;
/**
* 动画持续时间
*/
@property (nonatomic) CGFloat duration;
/**
* 开始动画
*/
- (void)startAnimation;
@end//
// NumberCount.m
// YXMWeather
//
// Created by XianMingYou on 15/2/18.
// Copyright (c) 2015年 XianMingYou. All rights reserved.
//
#import "NumberCount.h"
#import "POP.h"
@implementation NumberCount
- (instancetype)init {
self = [super init];
if (self) {
self.conutAnimation = [POPBasicAnimation animation];
}
return self;
}
- (void)startAnimation {
// 初始化值
CGFloat fromeValue = self.fromValue;
CGFloat toValue = self.toValue;
CGFloat duration = (self.duration <= 0 ? 1.f : self.duration);
// 设定动画
self.conutAnimation.fromValue = @(fromeValue);
self.conutAnimation.toValue = @(toValue);
self.conutAnimation.timingFunction = \
[CAMediaTimingFunction functionWithControlPoints:0.69 :0.11 :0.32 :0.88];
self.conutAnimation.duration = duration;
// 只有执行了代理才会执行计数引擎
if (self.delegate && [self.delegate respondsToSelector:@selector(numberCount:currentNumber:)]) {
/* 将计算出来的值通过writeBlock动态给控件设定 */
self.conutAnimation.property = \
[POPMutableAnimatableProperty propertyWithName:@"conutAnimation"
initializer:^(POPMutableAnimatableProperty *prop) {
prop.writeBlock = ^(id obj, const CGFloat values[]) {
NSNumber *number = @(values[0]);
[_delegate numberCount:self currentNumber:number];
};
}];
// 添加动画
[self pop_addAnimation:self.conutAnimation forKey:nil];
}
}
@end子类方法:
//
// HumidityCount.h
// YXMWeather
//
// Created by XianMingYou on 15/2/18.
// Copyright (c) 2015年 XianMingYou. All rights reserved.
//
#import "NumberCount.h"
@interface HumidityCount : NumberCount
- (void)startAnimation;
@end//
// HumidityCount.m
// YXMWeather
//
// Created by XianMingYou on 15/2/18.
// Copyright (c) 2015年 XianMingYou. All rights reserved.
//
#import "HumidityCount.h"
#import "NSString+RichText.h"
@implementation HumidityCount
- (void)startAnimation {
// 初始化值
CGFloat fromeValue = self.fromValue;
CGFloat toValue = self.toValue;
CGFloat duration = (self.duration <= 0 ? 1.f : self.duration);
// 设定动画
self.conutAnimation.fromValue = @(fromeValue);
self.conutAnimation.toValue = @(toValue);
self.conutAnimation.timingFunction = \
[CAMediaTimingFunction functionWithControlPoints:0.69 :0.11 :0.32 :0.88];
self.conutAnimation.duration = duration;
// 只有执行了代理才会执行计数引擎
if (self.delegate && [self.delegate respondsToSelector:@selector(numberCount:currentSting:)]) {
/* 将计算出来的值通过writeBlock动态给控件设定 */
self.conutAnimation.property = \
[POPMutableAnimatableProperty propertyWithName:@"conutAnimation"
initializer:^(POPMutableAnimatableProperty *prop) {
prop.writeBlock = ^(id obj, const CGFloat values[]) {
NSNumber *number = @(values[0]);
NSAttributedString *ats = [self accessNumber:number];
[self.delegate numberCount:self currentSting:ats];
};
}];
// 添加动画
[self pop_addAnimation:self.conutAnimation forKey:nil];
}
}
// 处理富文本
- (NSAttributedString *)accessNumber:(NSNumber *)number {
NSInteger count = [number integerValue];
NSString *countStr = [NSString stringWithFormat:@"%02ld", (long)count];
NSString *totalStr = [NSString stringWithFormat:@"%@%%", countStr];
UIFont *font1 = [UIFont fontWithName:LATO_REGULAR size:40.f];
UIFont *font2 = [UIFont fontWithName:LATO_BOLD size:9.f];
NSRange totalRange = [totalStr range]; // 全局的区域
NSRange countRange = [countStr rangeFrom:totalStr]; // %的区域
return [totalStr createAttributedStringAndConfig:@[
// 全局设置
[ConfigAttributedString font:font2
range:totalRange],
[ConfigAttributedString font:font1
range:countRange],
// 局部设置
[ConfigAttributedString foregroundColor:[UIColor redColor]
range:countRange],
]];
}
@end有以下几点需要注意:
