ios - 图像复选框问题

Question

当我第二次选中该复选框时，它会显示已选中的图像，但状态为未选中。

这是我的代码:

- (void)viewDidLoad {
    [super viewDidLoad];
    [CheckBox setBackgroundImage:[UIImage imageNamed:@"uncheck_checkbox.png"] forState:UIControlStateNormal];
}

- (IBAction)CheckBox:(id)sender {

    if (CheckBox.selected == NO)
    {
          CheckBox.selected = YES;
          [CheckBox setBackgroundImage:[UIImage imageNamed:@"checked_checkbox.png"] forState:UIControlStateNormal];       
    }
    else
    {
          CheckBox.selected = NO;
          [CheckBox setBackgroundImage:[UIImage imageNamed:@"uncheck_checkbox.png"] forState:UIControlStateSelected];     
    }
}

Answer 1

您的代码完全正确，只需将 UIControlStateSelected 替换为 UIControlStateNormal。