Question

我正在使用下面的代码，我想将所选颜色传递给另一个类，但是它给了我以下警告并且不起作用：

从uicolor strong分配给nsstring的不兼容指针类型：

代码：

-(IBAction)showpickerview
{
    NEOColorPickerViewController *controller = [[NEOColorPickerViewController alloc] init];
    controller.delegate = self;
    //controller.selectedColor = self.currentColor;
    controller.title = @"Select Color";
    UINavigationController* navVC = [[UINavigationController alloc] initWithRootViewController:controller];

    [self presentViewController:navVC animated:YES completion:nil];
}

- (void)colorPickerViewController:(NEOColorPickerBaseViewController *)controller didSelectColor:(UIColor *)color 
{
    SecondClass *second = [[SecondClass alloc]init];
    second.selectColor = color;
    NSLog(@"selected color %@",second.selectColor);

    //UIColor *color1 = color;
    //const CGFloat *components = CGColorGetComponents(color.CGColor);
    //second.selectColor = [NSString stringWithFormat:@"%f,%f,%f,%f", components[0], components[1], components[2], components[3]];
    //NSLog(@"selected color %@",second.selectColor);

    [controller dismissViewControllerAnimated:YES completion:nil];
}

Answer 1

备选方案1：

- (void)colorPickerViewController:(NEOColorPickerBaseViewController *)controller didSelectColor:(UIColor *)color 
{
 SecondClass *second = [[SecondClass alloc]init];
 second.selectColor = controller. selectedColor; 
 NSLog(@"selected color %@",second.selectColor);

[controller dismissViewControllerAnimated:YES completion:nil];
 }

由于NEOColorPickerBaseViewController是NEOColorPickerViewController的一个实例，因此应该可以使用。

备选方案2：

似乎您在SecondClass中选择的颜色是NSString而不是UIColor。所以你得到了警告。

如何将UIColor对象从一个类传递到另一个类

1 个答案: