详解iOS-按钮单选与多选逻辑处理

 #define ZLUnselectedColor [UIColor colorWithRed:(241)/255.0 green:(242)/255.0 blue:(243)/255.0 alpha:1.0] #define ZLSelectedColor [UIColor colorWithRed:(108)/255.0 green:(187)/255.0 blue:(82)/255.0 alpha:1.0] @interface ZLRadioViewController () // 标签数组(按钮文字) @property (nonatomic, strong) NSArray *markArray; // 按钮数组 @property (nonatomic, strong) NSMutableArray *btnArray; // 选中按钮 @property (nonatomic, strong) UIButton *selectedBtn; @end 

 #pragma mark - 懒加载 - (NSArray *)markArray { if (!_markArray) { NSArray *array = [NSArray array]; array = @[@"14", @"15", @"16", @"17", @"18"]; _markArray = array; } return _markArray; } - (NSMutableArray *)btnArray { if (!_btnArray) { NSMutableArray *array = [NSMutableArray array]; _btnArray = array; } return _btnArray; } 

 - (void)setupRadioBtnView { CGFloat UI_View_Width = [UIScreen mainScreen].bounds.size.width; CGFloat marginX = 15; CGFloat top = 100; CGFloat btnH = 30; CGFloat width = (250 - marginX * 4) / 3; // 按钮背景 UIView *btnsBgView = [[UIView alloc] initWithFrame:CGRectMake((UI_View_Width - 250) * 0.5, 50, 250, 300)]; btnsBgView.backgroundColor = [UIColor whiteColor]; [self.view addSubview:btnsBgView]; // 循环创建按钮 NSInteger maxCol = 3; for (NSInteger i = 0; i <5; i++) { UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom]; btn.backgroundColor = ZLUnselectedColor; btn.layer.cornerRadius = 3.0; // 按钮的边框弧度 btn.clipsToBounds = YES; btn.titleLabel.font = [UIFont boldSystemFontOfSize:12]; [btn setTitleColor:[UIColor colorWithRed:(102)/255.0 green:(102)/255.0 blue:(102)/255.0 alpha:1.0] forState:UIControlStateNormal]; [btn setTitleColor:[UIColor whiteColor] forState:UIControlStateSelected]; [btn addTarget:self action:@selector(chooseMark:) forControlEvents:UIControlEventTouchUpInside]; NSInteger col = i % maxCol; //列 btn.x = marginX + col * (width + marginX); NSInteger row = i / maxCol; //行 btn.y = top + row * (btnH + marginX); btn.width = width; btn.height = btnH; [btn setTitle:self.markArray[i] forState:UIControlStateNormal]; [btnsBgView addSubview:btn]; btn.tag = i; [self.btnArray addObject:btn]; } // 创建完btn后再判断是否能选择(之前是已经选取过的) // 假数据:之前已经上传16时,则回显16 for (UIButton *btn in btnsBgView.subviews) { if ([@"16" isEqualToString:btn.titleLabel.text]) { btn.selected = YES; btn.backgroundColor = ZLSelectedColor; break; } } } 

 - (void)chooseMark:(UIButton *)sender { NSLog(@"点击了%@", sender.titleLabel.text); self.selectedBtn = sender; sender.selected = !sender.selected; for (NSInteger j = 0; j <[self.btnArray count]; j++) { UIButton *btn = self.btnArray[j] ; if (sender.tag == j) { btn.selected = sender.selected; } else { btn.selected = NO; } btn.backgroundColor = ZLUnselectedColor; } UIButton *btn = self.btnArray[sender.tag]; if (btn.selected) { btn.backgroundColor = ZLSelectedColor; } else { btn.backgroundColor = ZLUnselectedColor; } } 

 #define ZLUnselectedColor [UIColor colorWithRed:(241)/255.0 green:(242)/255.0 blue:(243)/255.0 alpha:1.0] #define ZLSelectedColor [UIColor colorWithRed:(128)/255.0 green:(177)/255.0 blue:(34)/255.0 alpha:1.0] @interface ZLMultiselectController () // 标签数组 @property (nonatomic, strong) NSArray *markArray; // 标签字典 @property (nonatomic, strong) NSDictionary *markDict; // 选中标签数组(数字) @property (nonatomic, strong) NSMutableArray *selectedMarkArray; // 选中标签数组(文字字符串) @property (nonatomic, strong) NSMutableArray *selectedMarkStrArray; @end 

 #pragma mark - 懒加载 - (NSArray *)markArray { if (!_markArray) { NSArray *array = [NSArray array]; array = @[@"导购", @"客服", @"家教", @"礼仪", @"主持"]; _markArray = array; } return _markArray; } // 上传通过文字key取数字value发送数字 - (NSDictionary *)markDict { if (!_markDict) { NSDictionary *dict = [NSDictionary dictionary]; dict = @{ @"导购" : @"3" , @"客服" : @"7", @"家教" : @"9", @"礼仪" : @"10", @"主持" : @"11", }; _markDict = dict; } return _markDict; } - (NSMutableArray *)selectedMarkArray { if (!_selectedMarkArray) { _selectedMarkArray = [NSMutableArray array]; } return _selectedMarkArray; } - (NSMutableArray *)selectedMarkStrArray { if (!_selectedMarkStrArray) { _selectedMarkStrArray = [NSMutableArray array]; } return _selectedMarkStrArray; } 

 - (void)setupMultiselectView { CGFloat UI_View_Width = [UIScreen mainScreen].bounds.size.width; CGFloat marginX = 15; CGFloat top = 19; CGFloat btnH = 35; CGFloat marginH = 40; CGFloat height = 130; CGFloat width = (UI_View_Width - marginX * 4) / 3; // 按钮背景 UIView *btnsBgView = [[UIView alloc] initWithFrame:CGRectMake(0, 100, UI_View_Width, height)]; btnsBgView.backgroundColor = [UIColor whiteColor]; [self.view addSubview:btnsBgView]; // 循环创建按钮 NSInteger maxCol = 3; for (NSInteger i = 0; i <5; i++) { UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom]; btn.backgroundColor = ZLUnselectedColor; btn.layer.cornerRadius = 3.0; // 按钮的边框弧度 btn.clipsToBounds = YES; btn.titleLabel.font = [UIFont boldSystemFontOfSize:14]; [btn setTitleColor:[UIColor colorWithRed:(102)/255.0 green:(102)/255.0 blue:(102)/255.0 alpha:1.0] forState:UIControlStateNormal]; [btn setTitleColor:[UIColor whiteColor] forState:UIControlStateSelected]; [btn addTarget:self action:@selector(chooseMark:) forControlEvents:UIControlEventTouchUpInside]; NSInteger col = i % maxCol; //列 btn.x = marginX + col * (width + marginX); NSInteger row = i / maxCol; //行 btn.y = top + row * (btnH + marginX); btn.width = width; btn.height = btnH; [btn setTitle:self.markArray[i] forState:UIControlStateNormal]; [btnsBgView addSubview:btn]; } // 确定按钮 UIButton *surebtn = [UIButton buttonWithType:UIButtonTypeCustom]; [surebtn setTitle:@"确定" forState:UIControlStateNormal]; surebtn.frame = CGRectMake(marginX * 2, CGRectGetMaxY(btnsBgView.frame) + marginH, UI_View_Width - marginX * 4, 40); surebtn.titleLabel.font = [UIFont boldSystemFontOfSize:16]; [surebtn addTarget:self action:@selector(sureBtnClick) forControlEvents:UIControlEventTouchUpInside]; surebtn.backgroundColor = [UIColor orangeColor]; surebtn.layer.cornerRadius = 3.0; surebtn.clipsToBounds = YES; [self.view addSubview:surebtn]; } 

 /** * 按钮多选处理 */ - (void)chooseMark:(UIButton *)btn { btn.selected = !btn.selected; if (btn.isSelected) { btn.backgroundColor = ZLSelectedColor; [self.selectedMarkArray addObject:self.markDict[btn.titleLabel.text]]; [self.selectedMarkStrArray addObject:btn.titleLabel.text]; } else { btn.backgroundColor = ZLUnselectedColor; [self.selectedMarkArray removeObject:self.markDict[btn.titleLabel.text]]; [self.selectedMarkStrArray removeObject:btn.titleLabel.text]; } } /** * 确认接口请求处理 */ - (void)sureBtnClick { // 用户选择标签后就把值上传, 也要传给服务器下次直接请求回来 // 按钮数字标识字符串 NSString *numStr = [self.selectedMarkArray componentsJoinedByString:@","]; // 按钮文字字符串 NSString *str = [self.selectedMarkStrArray componentsJoinedByString:@","]; // 测试:拼接请求参数 NSLog(@"按钮数字标识字符串:%@", numStr); NSLog(@"按钮文字字符串:%@", str); }