public async Task WillBeActive()
{
var fileSystem = DependencyService.Get<IFileSystem>();
var content = ((ImageViewModel)this.BindingContext);
var imageName = content.ImageName;
if (fileSystem.FileExists(imageName) == false)
{
var imageUrl = ((ImageViewModel)this.BindingContext).ImageUrl;
Device.BeginInvokeOnMainThread(() => {
Content = new SpinnerView() { IsBusy = true };
});
await DownloadAndSaveFile(imageUrl, imageName);
Device.BeginInvokeOnMainThread(() => {
Content = _photoView;
_photoView.ImageName = imageName;
});
}
}
public SingleImagePage()
{
Content = new SpinnerView() { IsBusy = true };
}