ios 简单实现tableView单选和多选功能

朴灿烈づ我的快乐病毒、 2022-06-05 10:28 230阅读 0赞

代码如下：

#import "ViewController.h"
    
    @interface ViewController ()<UITableViewDataSource,UITableViewDelegate> {
        NSInteger index;
        BOOL isRadio;
    }
    @property (weak, nonatomic) IBOutlet UITableView *tableView;
    @property(nonatomic,strong)NSMutableArray *datas;
    @property(nonatomic,strong)NSMutableDictionary *mDic;
    @end
    
    @implementation ViewController
    
    - (void)viewDidLoad {
        [super viewDidLoad];
        // Do any additional setup after loading the view, typically from a nib.
        
        self.datas = [NSMutableArray array];
        self.mDic = [NSMutableDictionary dictionary];
        for (int i=0; i<100; i++) {
            [self.datas addObject:[NSString stringWithFormat:@"cell%d",i]];
            [self.mDic setObject:@0 forKey:@(i)];
        }
        [self.tableView reloadData];
    }
    
    -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
        return self.datas.count;
    }
    
    -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
        UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
        if (!cell) {
            cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"];
        }
        cell.textLabel.text = self.datas[indexPath.row];
        
        if (isRadio) {
            if (indexPath.row == index) {
                cell.textLabel.textColor = [UIColor redColor];
            }else {
                cell.textLabel.textColor = [UIColor blackColor];
            }
        }else {
            if ([[self.mDic objectForKey:@(indexPath.row)] intValue]) {
                cell.textLabel.textColor = [UIColor redColor];
            }else {
                cell.textLabel.textColor = [UIColor blackColor];
            }
        }
        
        return cell;
    }
    
    -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
        index = indexPath.row;
        [self.mDic setObject:@1 forKey:@(indexPath.row)];
        [tableView reloadData];
    }
    - (void)didReceiveMemoryWarning {
        [super didReceiveMemoryWarning];
        // Dispose of any resources that can be recreated.
    }
    
    @end

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