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);}