山寨“饿了么”应用中添加菜品数量按钮效果

本人视频教程系类   iOS中CALayer的使用

最终效果：

山寨源头：

源码：（此源码解决了重用问题，可以放心的放在cell中使用）

AddAndDeleteButton.h 与 AddAndDeleteButton.m

//
//  AddAndDeleteButton.h
//  LabelControll
//
//  Created by YouXianMing on 14/12/11.
//  Copyright (c) 2014年 YouXianMing. All rights reserved.
//#import <UIKit/UIKit.h>typedef enum : NSUInteger {CNY, // 人民币GBP, // 英镑JPY, // 日元USD, // 美元
} EnumMoneyType;@protocol AddAndDeleteButtonDelegate <NSObject>
@optional
- (void)currentCount:(NSNumber *)count;
@end@interface AddAndDeleteButton : UIView@property (nonatomic, weak)    id<AddAndDeleteButtonDelegate> delegate;/***  数目（数目为0就会隐藏）*/
@property (nonatomic, strong) NSNumber *count;/***  单价（商品单价）*/
@property (nonatomic, strong) NSNumber *price;/***  设置数目**  @param count   数目*  @param animted 时候执行动画*/
- (void)setCount:(NSNumber *)count animated:(BOOL)animted;/***  起始值**  @param count 值*/
- (void)startValue:(NSNumber *)count;@end

//
//  AddAndDeleteButton.m
//  LabelControll
//
//  Created by YouXianMing on 14/12/11.
//  Copyright (c) 2014年 YouXianMing. All rights reserved.
//#import "AddAndDeleteButton.h"typedef enum : NSUInteger {UIBUTTON_ADD = 10,UIBUTTON_DELETE,
} EnumAddAndDeleteButton;// 控件总体的宽度
static CGFloat width          = 150;
// 控件总体的高度
static CGFloat height         = 28;
// 添加按钮的宽度
static CGFloat addButtonWidth = 60;
// 控件之间的间隙
static CGFloat gap             = 7;static CGFloat label_10_99       = 5;
static CGFloat label_100_999     = 10;// 隐藏位置的frame值(后面要用)
static CGRect  hidenRect;  // 0static CGRect  labelRect;  // 1 - 9
static CGRect  deleteRect; // 1 - 9static CGRect  labelRect_10_99;  // 10 - 99
static CGRect  deleteRect_10_99; // 10 - 99static CGRect  labelRect_100_999;  // 100 - 999
static CGRect  deleteRect_100_999; // 100 - 999@interface AddAndDeleteButton ()@property (nonatomic, strong) UIView    *backedView;@property (nonatomic, strong) UIButton  *addButton;    // 添加的按钮@property (nonatomic, strong) UILabel   *countLabel;   // 计数的标签@property (nonatomic, strong) UIButton  *deleteButton; // 删除的按钮@end@implementation AddAndDeleteButton+ (void)initialize {if (self == [AddAndDeleteButton class]) {// 0时候的frame值hidenRect  = CGRectMake(width - height, 0, height, height);// 1到9的frame值labelRect  = CGRectMake(width - addButtonWidth - gap - height, 0, height, height);deleteRect = CGRectMake(width - addButtonWidth - (gap + height)*2, 0, height, height);// 10到99的frame值labelRect_10_99 = CGRectMake(width - addButtonWidth - gap - (height + label_10_99), 0,height + label_10_99, height);deleteRect_10_99 = CGRectMake(width - addButtonWidth - (gap + height) - (gap + height + label_10_99), 0,height, height);// 100到999的frame值labelRect_100_999 = CGRectMake(width - addButtonWidth - gap - (height + label_100_999), 0,height + label_100_999, height);deleteRect_100_999 = CGRectMake(width - addButtonWidth - (gap + height) - (gap + height + label_100_999), 0,height, height);}
}- (instancetype)initWithFrame:(CGRect)frame
{self = [super initWithFrame:frame];if (self) {// 添加背景图层_backedView                   = [[UIView alloc] initWithFrame:CGRectMake(0, 0, width, height)];[self addSubview:_backedView];// 计数的标签_countLabel = [[UILabel alloc] initWithFrame:CGRectMake(width - addButtonWidth - gap - height, 0, height, height)];_countLabel.backgroundColor     = [UIColor whiteColor];_countLabel.layer.backgroundColor = [UIColor whiteColor].CGColor;_countLabel.layer.borderWidth   = 1.f;_countLabel.layer.cornerRadius  = 4.f;_countLabel.layer.masksToBounds = YES;_countLabel.layer.borderColor   = [UIColor colorWithRed:0.898 green:0.898 blue:0.902 alpha:1].CGColor;_countLabel.text                = @"0";_countLabel.textAlignment       = NSTextAlignmentCenter;_countLabel.textColor           = [UIColor colorWithRed:0.945 green:0.102 blue:0.325 alpha:1];[self addSubview:_countLabel];// 删除按钮_deleteButton = [[UIButton alloc] initWithFrame:CGRectMake(width - addButtonWidth - (gap + height)*2, 0, height, height)];_deleteButton.backgroundColor     = [UIColor colorWithRed:0.792 green:0.796 blue:0.800 alpha:1];_deleteButton.tag                 = UIBUTTON_DELETE;[_deleteButton addTarget:selfaction:@selector(buttonsEvent:)forControlEvents:UIControlEventTouchUpInside];_deleteButton.layer.cornerRadius  = 4.f;_deleteButton.layer.masksToBounds = YES;[self addSubview:_deleteButton];// 添加按钮_addButton = [[UIButton alloc] initWithFrame:CGRectMake(width - addButtonWidth, 0, addButtonWidth, height)];[_addButton setTitle:@"$10.00" forState:UIControlStateNormal];[_addButton addTarget:selfaction:@selector(buttonsEvent:)forControlEvents:UIControlEventTouchUpInside];_addButton.tag = UIBUTTON_ADD;[_addButton setTitleColor:[UIColor colorWithRed:0.957 green:0.984 blue:0.949 alpha:1]forState:UIControlStateNormal];_addButton.titleLabel.font    = [UIFont systemFontOfSize:16.f];_addButton.layer.cornerRadius = 4.f;_addButton.backgroundColor    = [UIColor colorWithRed:0.475 green:0.796 blue:0.329 alpha:1];[self addSubview:_addButton];}return self;
}- (void)buttonsEvent:(UIButton *)button {if (button.tag == UIBUTTON_ADD) {[self setCount:@(self.count.intValue + 1) animated:YES];} else if (button.tag == UIBUTTON_DELETE) {[self setCount:@(self.count.intValue - 1) animated:YES];}if (_delegate && [_delegate respondsToSelector:@selector(currentCount:)]) {[_delegate currentCount:self.count];}
}- (void)startValue:(NSNumber *)count {if (count.integerValue == 0) {self.count = count;_countLabel.frame = hidenRect;_countLabel.alpha = 0.f;_countLabel.text  = @"0";_deleteButton.frame = hidenRect;_deleteButton.alpha = 0.f;return;}if (count.integerValue >= 1 && count.integerValue <= 9) {self.count = count;_countLabel.frame = labelRect;_countLabel.alpha = 1.f;_countLabel.text  = count.stringValue;_deleteButton.frame = deleteRect;_deleteButton.alpha = 1.f;return;}if (count.integerValue >= 10 && count.integerValue <= 99) {self.count = count;_countLabel.frame = labelRect_10_99;_countLabel.alpha = 1.f;_countLabel.text  = count.stringValue;_deleteButton.frame = deleteRect_10_99;_deleteButton.alpha = 1.f;return;}if (count.integerValue >= 100 && count.integerValue <= 999) {self.count = count;_countLabel.frame = labelRect_100_999;_countLabel.alpha = 1.f;_countLabel.text  = count.stringValue;_deleteButton.frame = deleteRect_100_999;_deleteButton.alpha = 1.f;return;}
}- (void)setCount:(NSNumber *)count animated:(BOOL)animted {if (count.intValue == 1000) {return;}_count = count;// 设置数为0而且标签上的值为1时（从1减到0的情况)   1 --> 0if (count.intValue == 0 && _countLabel.text.intValue == 1) {if (animted) {[UIView animateWithDuration:0.35f animations:^{_countLabel.frame = hidenRect;_countLabel.alpha = 0.f;_countLabel.text  = @"0";_deleteButton.frame = hidenRect;_deleteButton.alpha = 0.f;}];} else {_countLabel.frame = hidenRect;_countLabel.alpha = 0.f;_countLabel.text  = @"0";_deleteButton.frame = hidenRect;_deleteButton.alpha = 0.f;}return;}// 设置数目为1而且标签上的值为0时（从0加到1的情况） 0 --> 1if (count.intValue == 1 && _countLabel.text.intValue == 0) {if (animted) {[UIView animateWithDuration:0.35f animations:^{_countLabel.frame   = labelRect;_countLabel.alpha   = 1.f;_countLabel.text    = @"1";_deleteButton.frame = deleteRect;_deleteButton.alpha = 1.f;}];} else {_countLabel.frame   = labelRect;_countLabel.alpha   = 1.f;_countLabel.text    = @"1";_deleteButton.frame = deleteRect;_deleteButton.alpha = 1.f;}return;}// 设置数目从9到10时候的动画   9 --> 10if (count.intValue == 10 && _countLabel.text.intValue == 9) {if (animted) {[UIView animateWithDuration:0.35f animations:^{_countLabel.frame   = labelRect_10_99;_countLabel.alpha   = 1.f;_countLabel.text    = @"10";_deleteButton.frame = deleteRect_10_99;_deleteButton.alpha = 1.f;}];} else {_countLabel.frame   = labelRect_10_99;_countLabel.alpha   = 1.f;_countLabel.text    = @"10";_deleteButton.frame = deleteRect_10_99;_deleteButton.alpha = 1.f;}return;}// 设置数目从9到10时候的动画  10 --> 9if (count.intValue == 9 && _countLabel.text.intValue == 10) {if (animted) {[UIView animateWithDuration:0.35f animations:^{_countLabel.frame   = labelRect;_countLabel.alpha   = 1.f;_countLabel.text    = @"9";_deleteButton.frame = deleteRect;_deleteButton.alpha = 1.f;}];} else {_countLabel.frame   = labelRect;_countLabel.alpha   = 1.f;_countLabel.text    = @"9";_deleteButton.frame = deleteRect;_deleteButton.alpha = 1.f;}return;}// 99 --> 100if (count.intValue == 100 && _countLabel.text.intValue == 99) {if (animted) {[UIView animateWithDuration:0.35f animations:^{_countLabel.frame   = labelRect_100_999;_countLabel.alpha   = 1.f;_countLabel.text    = @"100";_deleteButton.frame = deleteRect_100_999;_deleteButton.alpha = 1.f;}];} else {_countLabel.frame   = labelRect_100_999;_countLabel.alpha   = 1.f;_countLabel.text    = @"100";_deleteButton.frame = deleteRect_100_999;_deleteButton.alpha = 1.f;}return;}// 100 --> 99if (count.intValue == 99 && _countLabel.text.intValue == 100) {if (animted) {[UIView animateWithDuration:0.35f animations:^{_countLabel.frame   = labelRect_10_99;_countLabel.alpha   = 1.f;_countLabel.text    = @"99";_deleteButton.frame = deleteRect_10_99;_deleteButton.alpha = 1.f;}];} else {_countLabel.frame   = labelRect_10_99;_countLabel.alpha   = 1.f;_countLabel.text    = @"99";_deleteButton.frame = deleteRect_10_99;_deleteButton.alpha = 1.f;}return;}// 11 - 98if (count.intValue >= 10 && count.intValue <= 99) {_countLabel.frame   = labelRect_10_99;_countLabel.text    = count.stringValue;_deleteButton.frame = deleteRect_10_99;return;}// 2 --> 8if (count.intValue >= 1 && count.intValue <= 9) {_countLabel.frame   = labelRect;_countLabel.text    = count.stringValue;_deleteButton.frame = deleteRect;return;}if (count.intValue >= 100 && count.intValue <= 999) {_countLabel.frame   = labelRect_100_999;_countLabel.text    = count.stringValue;_deleteButton.frame = deleteRect_100_999;return;}
}@end

使用源码：

    AddAndDeleteButton *button = [[AddAndDeleteButton alloc] initWithFrame:CGRectMake(100, 0, 150, 28)];[button startValue:@(0)];button.transform           = CGAffineTransformScale(button.transform, 1.5, 1.5);button.center              = self.view.center;[self.view addSubview:button];

控制器源码：

//
//  ViewController.m
//  LabelControll
//
//  Created by YouXianMing on 14/12/11.
//  Copyright (c) 2014年 YouXianMing. All rights reserved.
//#import "ViewController.h"
#import "AddAndDeleteButton.h"
#import "YXCell.h"static NSString *test = @"YouXianMing";@interface ViewController ()<UITableViewDataSource, UITableViewDelegate, YXCellDelegate>@property (nonatomic, strong) UITableView    *tableView;
@property (nonatomic, strong) NSMutableArray *dataArray;@end@implementation ViewController- (void)viewDidLoad {[super viewDidLoad];_dataArray = [[NSMutableArray alloc] init];for (int i = 0; i < 20; i++) {[_dataArray addObject:@(i)];}_tableView            = [[UITableView alloc] initWithFrame:self.view.boundsstyle:UITableViewStylePlain];_tableView.delegate   = self;_tableView.dataSource = self;[self.view addSubview:_tableView];[_tableView registerClass:[YXCell class] forCellReuseIdentifier:test];
}- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {return 20;
}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {YXCell *cell = [tableView dequeueReusableCellWithIdentifier:test];cell.selectionStyle = UITableViewCellSelectionStyleNone;cell.delegate = self;[cell.button startValue:_dataArray[indexPath.row]];return cell;
}- (void)currentCount:(NSNumber *)count cell:(YXCell *)cell {NSIndexPath *path = [_tableView indexPathForCell:cell];[_dataArray replaceObjectAtIndex:path.row withObject:count];
}@end

//
//  YXCell.h
//  LabelControll
//
//  Created by YouXianMing on 14/12/11.
//  Copyright (c) 2014年 YouXianMing. All rights reserved.
//#import <UIKit/UIKit.h>
#import "AddAndDeleteButton.h"@class YXCell;@protocol YXCellDelegate <NSObject>
@optional
- (void)currentCount:(NSNumber *)count cell:(YXCell *)cell;
@end@interface YXCell : UITableViewCell@property (nonatomic, weak)    id<YXCellDelegate>  delegate;@property (nonatomic, strong)  AddAndDeleteButton *button;@end

//
//  YXCell.m
//  LabelControll
//
//  Created by YouXianMing on 14/12/11.
//  Copyright (c) 2014年 YouXianMing. All rights reserved.
//#import "YXCell.h"@interface YXCell ()<AddAndDeleteButtonDelegate>@end@implementation YXCell- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];if (self) {_button = [[AddAndDeleteButton alloc] initWithFrame:CGRectMake(100, 0, 150, 28)];_button.delegate = self;[_button startValue:@(0)];[self addSubview:_button];}return self;
}- (void)currentCount:(NSNumber *)count {if (_delegate && [_delegate respondsToSelector:@selector(currentCount:cell:)]) {[_delegate currentCount:count cell:self];}
}@end