前言
1、之前项目中会有一些标签列表来显示某些特性或要求，如下图（代码实现后的效果）:
2、期间也是浏览了好多其他的第三方，但是可能是没找到好的方法去寻找吧，没有找到一个合适的，况且又不是特别复杂的东西，所以就自己写了一套，但是注意因为我们项目中使用的是rac+mansory,所以想要使用的话需要引入这两个库=_=。
3、自己写的时候考虑的不是太多，中心思想是viewmodel做定制需求，view通过viewmodel来实现定制化ui，其他更多的是逻辑上的排版，所以不做更多赘述，自己体会y^o^y 。
view布局
lslabeltextview.h的实现
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//// lslabeltextview.h// rencheren//// created by 王隆帅 on 15/12/30.// copyright © 2015年 王隆帅. all rights reserved.//#import "ycview.h"@interface lslabeltextview : ycview@end |
lslabeltextview.m的实现
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//// lslabeltextview.m// rencheren//// created by 王隆帅 on 15/12/30.// copyright © 2015年 王隆帅. all rights reserved.//#import "lslabeltextview.h"#import "lslabeltextviewmodel.h"@interface lslabeltextview ()@property (nonatomic, strong) lslabeltextviewmodel *viewmodel;@end@implementation lslabeltextview { masconstraint *_toleftbtnmasconstraint; masconstraint *_totopbtnmasonstraint; masconstraint *_toleftselfmasconstraint; masconstraint *_totopselfmasonstraint;}- (instancetype)initwithviewmodel:(id<ycviewmodelprotocol>)viewmodel { self.viewmodel = (lslabeltextviewmodel *)viewmodel; return [super initwithviewmodel:viewmodel];}- (void)yc_bindviewmodel { @weakify(self); [[racobserve(self, viewmodel.dataarray) distinctuntilchanged] subscribenext:^(id x) { @strongify(self); [self.subviews makeobjectsperformselector:@selector(removefromsuperview)]; if (self.viewmodel.dataarray.count <= 0) { __weak uiview *weaknullview; uiview *nullview = [[uiview alloc] init]; weaknullview = nullview; [self addsubview:weaknullview]; ws(weakself) [weaknullview mas_makeconstraints:^(masconstraintmaker *make) { make.top.right.left.bottom.equalto(weakself); make.height.equalto(weakself.viewmodel.nullheight); }]; return; } nsinteger linenum = 1; cgfloat allwidth = 0; __weak uibutton *lastbtn; for (int i = 0; i < self.viewmodel.dataarray.count; i++) { nsstring *string = [self.viewmodel.dataarray stringwithindex:i]; __weak uibutton *weakbtn = [self ls_getbtnwithstring:string]; [self addsubview:weakbtn]; cgsize size = [string widthwithheight:20 andfont:self.viewmodel.textfontnum]; cgfloat needfloat = size.width < self.viewmodel.miniwidth ? self.viewmodel.miniwidth : size.width; if (lastbtn) { ws(weakself) [weakbtn mas_makeconstraints:^(masconstraintmaker *make) { _toleftbtnmasconstraint = make.left.equalto(lastbtn.mas_right).offset(weakself.viewmodel.labelhorizontalspace); [_toleftbtnmasconstraint activate]; _totopbtnmasonstraint = make.top.equalto(lastbtn.mas_bottom).offset(weakself.viewmodel.labelverticalspace); [_totopbtnmasonstraint deactivate]; _toleftselfmasconstraint = make.left.equalto(weakself.viewmodel.lefttoviewedge); _totopselfmasonstraint = make.top.equalto(lastbtn); make.size.equalto(cgsizemake(needfloat + 20, weakself.viewmodel.labelheight)); }]; if (allwidth + self.viewmodel.labelhorizontalspace + needfloat + 20 + self.viewmodel.righttoviewedge > self.viewmodel.allwidth) { [_toleftselfmasconstraint activate]; [_toleftbtnmasconstraint deactivate]; [_totopbtnmasonstraint activate]; [_totopselfmasonstraint deactivate]; linenum ++; allwidth = self.viewmodel.lefttoviewedge + needfloat + 20; } else { [_toleftselfmasconstraint deactivate]; [_toleftbtnmasconstraint activate]; [_totopbtnmasonstraint deactivate]; [_totopselfmasonstraint activate]; allwidth = allwidth + self.viewmodel.labelhorizontalspace + needfloat + 20; } } else { ws(weakself) [weakbtn mas_makeconstraints:^(masconstraintmaker *make) { make.left.equalto(weakself.viewmodel.lefttoviewedge); make.size.equalto(cgsizemake(needfloat + 20, weakself.viewmodel.labelheight)); make.top.equalto(weakself.viewmodel.toptoviewedge); }]; allwidth = allwidth + self.viewmodel.lefttoviewedge + needfloat + 20; } lastbtn = weakbtn; } ws(weakslef) [lastbtn mas_updateconstraints:^(masconstraintmaker *make) { make.bottom.equalto(weakslef.viewmodel.bottomtoviewedge); }]; }];}- (uibutton *)ls_getbtnwithstring:(nsstring *)string { uibutton *btn = [uibutton buttonwithtype:uibuttontypecustom]; btn.layer.borderwidth = 0.5; btn.layer.bordercolor = self.viewmodel.bordercolor.cgcolor; [btn settitlecolor:self.viewmodel.titlecolor forstate:uicontrolstatenormal]; btn.backgroundcolor = self.viewmodel.backgroundcolor; btn.layer.maskstobounds = yes; btn.layer.cornerradius = self.viewmodel.cornerradius; btn.titlelabel.font = yc_yahei_font(self.viewmodel.textfontnum); [btn settitle:string forstate:uicontrolstatenormal]; btn.ls_typestring = string; return btn;}@end |
viewmodel适配
lslabeltextviewmodel.h的实现
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//// lslabeltextviewmodel.h// rencheren//// created by 王隆帅 on 15/12/30.// copyright © 2015年 王隆帅. all rights reserved.//#import "ycviewmodel.h"@interface lslabeltextviewmodel : ycviewmodel/** * 标签数组 */@property (nonatomic, strong) nsmutablearray *dataarray;/** * 总的宽度 */@property (nonatomic, assign) cgfloat allwidth;/** * 没有标签时的高度 */@property (nonatomic, assign) cgfloat nullheight;/** * 文字字体大小 */@property (nonatomic, assign) cgfloat textfontnum;/** * 取得标签为空的时候，标签最小长度 */@property (nonatomic, assign) cgfloat miniwidth;/** * 标签高度 */@property (nonatomic, assign) cgfloat labelheight;/** * 最左侧标签距离view的边缘的宽度 */@property (nonatomic, assign) cgfloat lefttoviewedge;/** * 最右侧标签距离view的边缘的宽度 */@property (nonatomic, assign) cgfloat righttoviewedge;/** * 最上侧标签距离view的边缘的宽度 */@property (nonatomic, assign) cgfloat toptoviewedge;/** * 最下侧标签距离view的边缘的宽度 */@property (nonatomic, assign) cgfloat bottomtoviewedge;/** * 横向标签之间的宽度 */@property (nonatomic, assign) cgfloat labelhorizontalspace;/** * 纵向标签之间的宽度 */@property (nonatomic, assign) cgfloat labelverticalspace;/** * label(btn) 的相关属性 */@property (nonatomic, assign) cgfloat borderwidth;@property (nonatomic, strong) uicolor *bordercolor;@property (nonatomic, strong) uicolor *titlecolor;@property (nonatomic, strong) uicolor *backgroundcolor;@property (nonatomic, assign) cgfloat cornerradius;@end |
lslabeltextviewmodel.m的实现
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//// lslabeltextviewmodel.m// rencheren//// created by 王隆帅 on 15/12/30.// copyright © 2015年 王隆帅. all rights reserved.//#import "lslabeltextviewmodel.h"@implementation lslabeltextviewmodel- (nsmutablearray *)dataarray { if (!_dataarray) { _dataarray = [[nsmutablearray alloc] init]; } return _dataarray;}@end |
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服务器之家。
原文链接：http://www.jianshu.com/p/db3ead7a8d31#
