带有 UIButton 单选按钮的 UICollectionViewCell - 一次选择一个单选按钮

Posted 2023-02-23

【中文标题】带有 UIButton 单选按钮的 UICollectionViewCell - 一次选择一个单选按钮

【英文标题】：UICollectionViewCell with UIButton radio button - one radioButton selected at time

【发布时间】：2019-06-10 02:41:53

【问题描述】：

我有 UICollectionView 和 UIButton 作为 UICollectionViewCell.xib 中的单选按钮。

我需要一次选择一个单选按钮，如果按下下一个，应该取消选择上一个。我将不胜感激。

//Loading radio button when view loads
-(void)setRadioButton

    if (!self.product.isSelectedCell) 
        [self.radioBtn setBackgroundImage:[UIImage imageNamed:@"radio-button"] forState:UIControlStateNormal];
    
    else
    
        [self.radioBtn setBackgroundImage:[UIImage imageNamed:@"radio-button-select"] forState:UIControlStateNormal];
    


//Action for radio button
- (IBAction)radioBtnAction:(UIButton*)sender 

    if([self.radioBtn isSelected]==YES)
    
      [self.radioBtn setBackgroundImage:[UIImage imageNamed:@"radio-button-select"] forState:UIControlStateNormal];

    
       else
//always calls else 
            [self.radioBtn setBackgroundImage:[UIImage imageNamed:@"radio-button"] forState:UIControlStateNormal];

        
    

【问题讨论】：

每个单元格中有多个按钮还是每个单元格只包含一个按钮？

@RajeshKumarR 每个单元格包含一个按钮

显示项目方法的项目数和单元格

@RajeshKumarR 我正在为单元格加载 UICollectionViewCell.xib，所以没有数据源方法

【参考方案1】：

Use this code in cellForRowAtIndexPath

        UIButton *radioButton = (UIButton *) [cell.contentView viewWithTag:kRadioButtonTag]; // Radio button
        [radioButton setImage:[UIImage imageNamed:@"radio_unselected"] forState:UIControlStateNormal];
        [radioButton setImage:[UIImage imageNamed:@"Radioselected"] forState:UIControlStateSelected];
        [radioButton addTarget:self action:@selector(radioButtonPressed:) forControlEvents:UIControlEventTouchDown]; 

if(indexPath == selectedIndexPath)
        [radioButton setImage:[UIImage imageNamed:@"RadioSelected"] forState:UIControlStateSelected];
else
        [radioButton setImage:[UIImage imageNamed:@"radio_unselected"] forState:UIControlStateNormal];

 Radio button taped from table cell and get index path of that button
Take on class Lebel NSIndexPath variable and store selected index path.

- (void)radioButtonPressed:(UIButton *)sender 

    CGPoint buttonPosition = [sender convertPoint:CGPointZero toView:tableView];
    NSIndexPath *indexPath = [tableView indexPathForRowAtPoint:buttonPosition];
    if (indexPath != nil) 
       selectedIndexPath = indexPath
[tableView reloadData];
    

希望这会有所帮助