<分区>
我正在尝试从我的手机图库中添加一张图片,但一直收到 System.Reference,我想在按下按钮时从我的手机图库上传一张图片,但它在 DependencyService 上给出了 nullReferenceException。
我的页面:
InitializeComponent();
Device.OnPlatform(
Android: () => {
new Thickness(0, 20, 0, 0);
}
);
Image image = new Image();
Button addImage = new Button { Text = "Select Image" };
addImage.Clicked += (sender, args) =>
{
IGalleryImageService galleryService = DependencyService.Get<IGalleryImageService>();
galleryService.ImageSelected += (o, imageSourceEventArgs) => image.Source = imageSourceEventArgs.ImageSource;
galleryService.SelectImage();
};
this.Content = new StackLayout
{
Children =
{
image,
addImage
}
};