iOS-Cell单选的3中方法（互斥事件）

本文仅提供Cell互斥的三种思路，代码变换无穷，可以灵活运用到自己的项目中

效果图

第一种方法：点击Cell互斥

使用系统方法：
- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
[super setSelected:selected animated:animated];
}
//此方法点击Cell时，会使离开Cell的selected = NO，点击Cell的selected = YES

使用：

#import "CustomSingleCell.h"
@implementation CustomSingleCell
{
UIButton * button;
}
- (void)awakeFromNib {
[super awakeFromNib];
}
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
    self.accessoryType = UITableViewCellAccessoryNone;
    self.selectionStyle = UITableViewCellSelectionStyleNone;
    
    button = [[UIButton alloc]init];
    [self.contentView addSubview:button];
    button.frame = CGRectMake(10, 10, 100, 30);
    [button setTitle:@"未选中" forState:UIControlStateNormal];
    [button setTitle:@"选中" forState:UIControlStateSelected];
    [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [button setTitleColor:[UIColor redColor] forState:UIControlStateSelected];
    [button addTarget:self action:@selector(onClick:) forControlEvents:UIControlEventTouchUpInside];
}
return self;
}
- (void)onClick:(UIButton *)btn{
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
[super setSelected:selected animated:animated];
/*在此处设置*/
button.selected =  selected;
}

第二种方法：点击Button互斥

#import 
typedef void (^CustomButtonSingleOneCellBlock)();
@interface CustomButtonSingleOneCell : UITableViewCell
@property(nonatomic,copy)CustomButtonSingleOneCellBlock SingleBtnBlock;
@property(nonatomic,strong) UIButton * button;;
@end

#import "CustomButtonSingleOneCell.h"
@implementation CustomButtonSingleOneCell
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
    self.backgroundColor = [UIColor whiteColor];
    self.accessoryType = UITableViewCellAccessoryNone;
    self.selectionStyle = UITableViewCellSelectionStyleNone;
    self.button = [[UIButton alloc]init];
    [self.contentView addSubview:self.button];
    self.button.frame = CGRectMake(10, 10, 100, 30);
    [self.button setTitle:@"未选中" forState:UIControlStateNormal];
    [self.button setTitle:@"选中" forState:UIControlStateSelected];
    [self.button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [self.button setTitleColor:[UIColor redColor] forState:UIControlStateSelected];
    [self.button addTarget:self action:@selector(onClick:) forControlEvents:UIControlEventTouchUpInside];
}
return self;
}
- (void)onClick:(UIButton *)btn{
self.SingleBtnBlock(btn);
}

ViewController使用

@implementation LPSingleViewController
{
UIButton *tempBtn;
}

CustomButtonSingleOneCell *cell =[tableView dequeueReusableCellWithIdentifier:@"CustomButtonSingleOneCell" forIndexPath:indexPath];
    if (indexPath.row == 0) {
        cell.button.selected = YES;
    }
    cell.SingleBtnBlock = ^(UIButton *btn){
        tempBtn.selected = NO;
        tempBtn = btn;
        btn.selected = YES;
    };
    return cell;

第三种方法：点击Button或者Cell互斥、本文提供点击Cell原理相同

#import 
@interface CustomBtnSingleTwoCell : UITableViewCell
@property(nonatomic,assign)BOOL isBtnSelected;
- (void)setBtnSelected;
@end
#import "CustomBtnSingleTwoCell.h"
@implementation CustomBtnSingleTwoCell{
UIButton * button;
}
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
    self.accessoryType = UITableViewCellAccessoryNone;
    self.selectionStyle = UITableViewCellSelectionStyleNone;
    button = [[UIButton alloc]init];
    [self.contentView addSubview:button];
    button.frame = CGRectMake(10, 10, 100, 30);
    [button setTitle:@"未选中" forState:UIControlStateNormal];
    [button setTitle:@"选中" forState:UIControlStateSelected];
    [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [button setTitleColor:[UIColor redColor] forState:UIControlStateSelected];
}
return self;
}
- (void)setBtnSelected{
button.selected = self.isBtnSelected;
}
@end

ViewController使用

boolArray = [NSMutableArray arrayWithArray:@[@(YES),@(NO),@(NO),@(NO),@(NO)]] ;
CustomBtnSingleTwoCell *cell =[tableView dequeueReusableCellWithIdentifier:@"CustomBtnSingleTwoCell" forIndexPath:indexPath];
            cell.backgroundColor = [UIColor yellowColor];
    cell.isBtnSelected = [boolArray[indexPath.row] boolValue];
    [cell setBtnSelected];
    return cell;

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
if (indexPath.section == 2) {
    
    //点击的时候确定点击状态。最好有model设置
    [boolArray enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
        if (idx == indexPath.row) {
            boolArray[indexPath.row] = @(YES);
        }else{
            boolArray[idx] = @(NO);
        }
    }];
    
    [self.tableView reloadSections:[[NSIndexSet alloc]initWithIndex:2] withRowAnimation:UITableViewRowAnimationFade];
}
}

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