[iOS微博项目 - 4.5] - 每条微博的底部工具条

github: https://github.com/hellovoidworld/HVWWeibo

A.每条微博的底部工具条

1.需求

• 每条微博底部都有一个工具条
• 显示3个按钮：评论、转发、赞
• 按钮间用分割线隔开
• 有评论数、转发数、赞数的时候显示相应数据，没有则显示文本

2.思路

（略）

3.实现

 

（1）微博数据模型中已经带有了相应数据字段

 //  HVWStatus.h
 /** int 转发数 */
 @property(nonatomic, assign) int reposts_count;

 /** int 评论数 */
 @property(nonatomic, assign) int comments_count;

 /** int 表态数 */
 @property(nonatomic, assign) int attitudes_count;
  

（2）直接在toolbar view中，在设置status数据的时候处理

 //
 //  HVWStatusToolbar.m
 //  HVWWeibo
 //
 //  Created by hellovoidworld on 15/2/12.
 //  Copyright (c) 2015年 hellovoidworld. All rights reserved.
 //

 #import "HVWStatusToolbar.h"

 @interface HVWStatusToolbar()

 /** 按钮数组 */
 @property(nonatomic, strong) NSMutableArray *buttons;

 /** 分割线数组 */
 @property(nonatomic, strong) NSMutableArray *divides;

 /** 转发按钮 */
 @property(nonatomic, strong) UIButton *repostButton;

 /** 评论按钮 */
 @property(nonatomic, strong) UIButton *commentButton;

 /** 点赞按钮 */
 @property(nonatomic, strong) UIButton *attitudeButton;

 @end

 @implementation HVWStatusToolbar

 - (NSMutableArray *)buttons {
     if (nil == _buttons) {
         _buttons = [NSMutableArray array];
     }
     return _buttons;
 }

 - (NSMutableArray *)divides {
     if (nil == _divides) {
         _divides = [NSMutableArray array];
     }
     return _divides;
 }

 /** 代码自定义初始化方法 */
 - (instancetype)initWithFrame:(CGRect)frame {
     self = [super initWithFrame:frame];

     if (self) {
         // 设置toolbar背景
         self.image = [UIImage resizedImage:@"timeline_card_bottom_background"];

         // 为了按钮能够点击，设置父控件可交互
         self.userInteractionEnabled = YES;

         // 添加按钮
         self.commentButton = [self setupButtonWithIcon:@"timeline_icon_comment" title:@"评论"];
         self.repostButton = [self setupButtonWithIcon:@"timeline_icon_retweet" title:@"转发"];
         self.attitudeButton = [self setupButtonWithIcon:@"timeline_icon_unlike" title:@"赞"];

         // 添加分割线
         [self setupDivides];
     }

     return self;
 }

 // 设置按钮
 - (UIButton *) setupButtonWithIcon:(NSString *)icon title:(NSString *)title {
     UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
     // 标题
     [button setTitle:title forState:UIControlStateNormal];
     // 图片
     [button setImage:[UIImage imageWithNamed:icon] forState:UIControlStateNormal];
     // 字体颜色
     [button setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];
     // 字体大小
     button.titleLabel.font = [UIFont systemFontOfSize:];
     // 图标、文本之间间隙
     [button setTitleEdgeInsets:UIEdgeInsetsMake(, , , )];
     // 高亮背景
     [button setBackgroundImage:[UIImage imageWithNamed:@"timeline_card_bottom_background_highlighted"] forState:UIControlStateHighlighted];
     // 取消高亮图片调整效果
     [button setAdjustsImageWhenHighlighted:NO];

     // 加入到view中
     [self addSubview:button];
     [self.buttons addObject:button];

     return button;
 }

 // 设置分割线
 - (void) setupDivides {
     for (int i=; i<self.buttons.count; i++) {
         UIImageView *divide = [[UIImageView alloc] init];
         divide.image = [UIImage imageWithNamed:@"timeline_card_bottom_line"];
         divide.contentMode = UIViewContentModeCenter;

         [self addSubview:divide];
         [self.divides addObject:divide];
     }
 }

 /** 设置Frame模型 */
 - (void)setToolbarFrame:(HVWStatusToolbarFrame *)toolbarFrame {
     _toolbarFrame = toolbarFrame;

     // 设置自己的frame
     self.frame = toolbarFrame.frame;

     // 配置toolbar按钮数据
     [self setupToolBarButton];
 }

 // 设置子控件frame
 - (void)layoutSubviews {
     [super layoutSubviews];

     // 配置按钮frame
     CGFloat buttonWidth = self.width / self.buttons.count;
     CGFloat buttonHeight = self.height;
     CGFloat buttonY = ;
     for (int i=; i<self.buttons.count; i++) {
         CGFloat buttonX = i * buttonWidth;
         UIButton *button = self.buttons[i];

         button.frame = CGRectMake(buttonX, buttonY, buttonWidth, buttonHeight);
     }

     // 配置分割线frame
     CGFloat divideWidth = ;
     CGFloat divideHeight = self.height;
     for (int i=; i<self.divides.count; i++) {
         CGFloat divideX = (i + ) * buttonWidth;
         UIImageView *imageView = self.divides[i];
         imageView.size = CGSizeMake(divideWidth, divideHeight);
         imageView.center = CGPointMake(divideX, self.height * 0.5);
     }
 }

 /** 设置toolbar按钮数据 */
 - (void) setupToolBarButton {
     HVWStatus *status = self.toolbarFrame.status;

     // 评论
     [self setupButtonTitle:self.commentButton withOriginalTitle:@"评论" titleCount:status.comments_count];

     // 转发
     [self setupButtonTitle:self.repostButton withOriginalTitle:@"转发" titleCount:status.reposts_count];

     // 点赞
     [self setupButtonTitle:self.attitudeButton withOriginalTitle:@"赞" titleCount:status.attitudes_count];
 }

 /** 设置按钮标题 */
 - (void) setupButtonTitle:(UIButton *) button withOriginalTitle:(NSString *)buttonTitle titleCount:(int)titleCount {
     // 当数量超过1万的时候，使用“万”作为单位
     if (titleCount >= ) {
         buttonTitle = [NSString stringWithFormat:@"%.1f万", (titleCount / 10000.0)];
         buttonTitle = [buttonTitle stringByReplacingOccurrencesOfString:@".0" withString:@""]; // 去除".0"小数
     } else if (titleCount) {
         buttonTitle = [NSString stringWithFormat:@"%d", titleCount];
     }

     [button setTitle:buttonTitle forState:UIControlStateNormal];
 }

 @end