//// XGTagView.h// 動態標簽//// Created by xgao on 17/3/22.// Copyright © 2017年 xgao. All rights reserved.//#import <UIKit/UIKit.h>@interface XGTagView : UIView/** * 初始化 * * @param frame frame * @param tagArray 標簽數組 * * @return */- (instancetype)initWithFrame:(CGRect)frame tagArray:(NSMutableArray*)tagArray;// 標簽數組@property (nonatomic,retain) NSArray* tagArray;// 選中標簽文字顏色@property (nonatomic,retain) UIColor* textColorSelected;// 默認標簽文字顏色@property (nonatomic,retain) UIColor* textColorNormal;// 選中標簽背景顏色@property (nonatomic,retain) UIColor* backgroundColorSelected;// 默認標簽背景顏色@property (nonatomic,retain) UIColor* backgroundColorNormal;@end

//// XGTagView.m// 動態標簽//// Created by xgao on 17/3/22.// Copyright © 2017年 xgao. All rights reserved.//#import "XGTagView.h"@interface XGTagView()@end@implementation XGTagView/** * 初始化 * * @param frame frame * @param tagArray 標簽數組 * * @return */- (instancetype)initWithFrame:(CGRect)frame tagArray:(NSArray*)tagArray{  self = [super initWithFrame:frame]; if (self) {  _tagArray = tagArray;  [self setUp]; } return self;}// 初始化- (void)setUp{  // 默認顏色 _textColorNormal = [UIColor darkGrayColor]; _textColorSelected = [UIColor whiteColor]; _backgroundColorSelected = [UIColor redColor]; _backgroundColorNormal = [UIColor whiteColor];  // 創建標簽按鈕 [self createTagButton];}// 重寫set屬性- (void)setTagArray:(NSMutableArray *)tagArray{  _tagArray = tagArray;  // 重新創建標簽 [self resetTagButton];}- (void)setTextColorSelected:(UIColor *)textColorSelected{ _textColorSelected = textColorSelected; // 重新創建標簽 [self resetTagButton];}- (void)setTextColorNormal:(UIColor *)textColorNormal{  _textColorNormal = textColorNormal; // 重新創建標簽 [self resetTagButton];}- (void)setBackgroundColorSelected:(UIColor *)backgroundColorSelected{  _backgroundColorSelected = backgroundColorSelected; // 重新創建標簽 [self resetTagButton];}- (void)setBackgroundColorNormal:(UIColor *)backgroundColorNormal{  _backgroundColorNormal = backgroundColorNormal; // 重新創建標簽 [self resetTagButton];}#pragma mark - Private// 重新創建標簽- (void)resetTagButton{  // 移除之前的標簽 for (UIButton* btn in self.subviews) {  [btn removeFromSuperview]; } // 重新創建標簽 [self createTagButton];}// 創建標簽按鈕- (void)createTagButton{  // 按鈕高度 CGFloat btnH = 28; // 距離左邊距 CGFloat leftX = 6; // 距離上邊距 CGFloat topY = 10; // 按鈕左右間隙 CGFloat marginX = 10; // 按鈕上下間隙 CGFloat marginY = 10; // 文字左右間隙 CGFloat fontMargin = 10;  for (int i = 0; i < _tagArray.count; i++) {    UIButton* btn = [UIButton buttonWithType:UIButtonTypeCustom];  btn.frame = CGRectMake(marginX + leftX, topY, 100, btnH);  btn.tag = 100+i;  // 默認選中第一個  if (i == 0) {   btn.selected = YES;  }    // 按鈕文字  [btn setTitle:_tagArray[i] forState:UIControlStateNormal];    //------ 默認樣式  //按鈕文字默認樣式  NSMutableAttributedString* btnDefaultAttr = [[NSMutableAttributedString alloc]initWithString:btn.titleLabel.text];  // 文字大小  [btnDefaultAttr addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:13] range:NSMakeRange(0, btn.titleLabel.text.length)];  // 默認顏色  [btnDefaultAttr addAttribute:NSForegroundColorAttributeName value:self.textColorNormal range:NSMakeRange(0, btn.titleLabel.text.length)];  [btn setAttributedTitle:btnDefaultAttr forState:UIControlStateNormal];    // 默認背景顏色  [btn setBackgroundImage:[self imageWithColor:self.backgroundColorNormal] forState:UIControlStateNormal];    //----- 選中樣式  // 選中字體顏色  NSMutableAttributedString* btnSelectedAttr = [[NSMutableAttributedString alloc]initWithString:btn.titleLabel.text];  // 選中顏色  [btnSelectedAttr addAttribute:NSForegroundColorAttributeName value:self.textColorSelected range:NSMakeRange(0, btn.titleLabel.text.length)];  // 選中文字大小  [btnSelectedAttr addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:13] range:NSMakeRange(0, btn.titleLabel.text.length)];  [btn setAttributedTitle:btnSelectedAttr forState:UIControlStateSelected];    // 選中背景顏色  [btn setBackgroundImage:[self imageWithColor:self.backgroundColorSelected] forState:UIControlStateSelected];    // 圓角  btn.layer.cornerRadius = btn.frame.size.height / 2.f;  btn.layer.masksToBounds = YES;  // 邊框  btn.layer.borderColor = [UIColor lightGrayColor].CGColor;  btn.layer.borderWidth = 0.5;    // 設置按鈕的邊距、間隙  [self setTagButtonMargin:btn fontMargin:fontMargin];    // 處理換行  if (btn.frame.origin.x + btn.frame.size.width + marginX > self.frame.size.width) {   // 換行   topY += btnH + marginY;      // 重置   leftX = 6;   btn.frame = CGRectMake(marginX + leftX, topY, 100, btnH);      // 設置按鈕的邊距、間隙   [self setTagButtonMargin:btn fontMargin:fontMargin];  }    // 重置高度  CGRect frame = btn.frame;  frame.size.height = btnH;  btn.frame = frame;    //----- 選中事件  [btn addTarget:self action:@selector(selectdButton:) forControlEvents:UIControlEventTouchUpInside];    [self addSubview:btn];    leftX += btn.frame.size.width + marginX; }  // 檢測按鈕狀態，最少選中一個 [self checkButtonState];}// 設置按鈕的邊距、間隙- (void)setTagButtonMargin:(UIButton*)btn fontMargin:(CGFloat)fontMargin{  // 按鈕自適應 [btn sizeToFit];  // 重新計算按鈕文字左右間隙 CGRect frame = btn.frame; frame.size.width += fontMargin*2; btn.frame = frame;}// 檢測按鈕狀態，最少選中一個- (void)checkButtonState{  int selectCount = 0; UIButton* selectedBtn = nil; for(int i=0;i < _tagArray.count; i++){  UIButton* btn = (UIButton*)[self viewWithTag:100+i];  if(btn.selected){   selectCount++;   selectedBtn = btn;  } } if (selectCount == 1) {  // 只有一個就把這一個給禁用手勢  selectedBtn.userInteractionEnabled = NO; }else{  // 解除禁用手勢  for(int i=0;i < _tagArray.count; i++){   UIButton* btn = (UIButton*)[self viewWithTag:100+i];   if(!btn.userInteractionEnabled){    btn.userInteractionEnabled = YES;   }  } }}// 根據顏色生成UIImage- (UIImage*)imageWithColor:(UIColor*)color{  CGRect rect = CGRectMake(0.0f, 0.0f, 1.0f, 1.0f); // 開始畫圖的上下文 UIGraphicsBeginImageContext(rect.size);  // 設置背景顏色 [color set]; // 設置填充區域 UIRectFill(CGRectMake(0, 0, rect.size.width, rect.size.height));  // 返回UIImage UIImage* image = UIGraphicsGetImageFromCurrentImageContext(); // 結束上下文 UIGraphicsEndImageContext(); return image;}#pragma mark - Event// 標簽按鈕點擊事件- (void)selectdButton:(UIButton*)btn{  btn.selected = !btn.selected;  // 檢測按鈕狀態，最少選中一個 [self checkButtonState];}@end