我正在使用 xamarin.forms 做一个应用程序,但是, 出于某种原因,在我更改此页面后,我将图像变大并添加了一些网格,gesturerecognizer 仅在 iphone 中停止工作,在 android 中它正常工作...有人看到此代码中的问题吗?因为,到目前为止,我做不到。 由于需要模板,我正在以编程方式创建页面。
private void CriaTela()
{
int row = 0;
int column = 0;
gridtextura.RowSpacing = 5;
gridtextura.ColumnSpacing = 15;
lstCategorias = lstCategorias.OrderBy(o => o.nome).ToList();
foreach (var item in lstCategorias)
{
Grid GridContent = new Grid
{
RowSpacing = 0,
//BackgroundColor = Color.Pink,
VerticalOptions = LayoutOptions.FillAndExpand,
RowDefinitions =
{
new RowDefinition { Height = new GridLength(8, GridUnitType.Star) },
new RowDefinition { Height = new GridLength(2, GridUnitType.Star) }
}
};
var textura = new CachedImage();
textura.Source = "texturaCateg";
textura.HorizontalOptions = LayoutOptions.FillAndExpand;
textura.VerticalOptions = LayoutOptions.FillAndExpand;
textura.Aspect = Aspect.Fill;
GridContent.BindingContext = item;
Grid boxColorView = new Grid
{
RowSpacing = 0,
// BackgroundColor = Color.Pink,
VerticalOptions = LayoutOptions.FillAndExpand,
RowDefinitions =
{
new RowDefinition { Height = new GridLength(2, GridUnitType.Star) },
new RowDefinition { Height = new GridLength(8, GridUnitType.Star) }
}
};
boxColorView.Children.Add(new BoxView { Color = Color.FromHex(item.corFundo), VerticalOptions = LayoutOptions.FillAndExpand }, 0, 1 );
boxColorView.Children.Add(textura, 0, 1);
boxColorView.Children.Add(new BoxView { VerticalOptions = LayoutOptions.FillAndExpand }, 0, 0);
gridtextura.Children.Add(boxColorView, column, row);
gridtextura.Children.Add(GridContent, column, row);
//Qual categoria foi escolhida?
var CliqueCategoria = new TapGestureRecognizer();
CliqueCategoria.Tapped += (s, e) =>
{
CriaLoading();
var stacklayout = s as Grid;
categoriaEscolhida = (Categorias)stacklayout.BindingContext;
ChamaProdutos();
};
GridContent.GestureRecognizers.Add(CliqueCategoria);
GridContent.BackgroundColor = Color.Green;
if (item.imagem != null && item.imagem != "")
{
int initIndex = item.imagem.IndexOf(',');
string image = "";
image = item.imagem.Substring(initIndex + 1);
try
{
GridContent.Children.Add(new CachedImage { Source = ImageSource.FromStream(() => new MemoryStream(Convert.FromBase64String(image))), VerticalOptions = LayoutOptions.FillAndExpand }, 0, 0);
}
catch (Exception e)
{
GridContent.Children.Add(new CachedImage { Source = "error.png", VerticalOptions = LayoutOptions.FillAndExpand, HorizontalOptions = LayoutOptions.Fill, HeightRequest = 50, WidthRequest = 50 }, 0, 0);
}
}
GridContent.Children.Add(new Label { Text = item.nome, TextColor = Color.FromHex(item.corTexto), FontSize = Device.GetNamedSize(NamedSize.Micro, typeof(Label)), FontAttributes = FontAttributes.Bold, HorizontalTextAlignment = TextAlignment.Center, VerticalOptions = LayoutOptions.Start, HorizontalOptions = LayoutOptions.CenterAndExpand }, 0, 1 );
if (column == 0)
{
column = 1;
}
else
{
column = 0;
row++;
}
}
}
----------------编辑--------------------
我对这个问题了解得更多一些......因为现在我有一个按钮图像......它正在工作......但现在,它在其他图像上然后它不再起作用...... .但它在另一张图片上......这与我在这里发布的这段代码的情况相同......我在其他上面有一个网格......在相同的位置和宽度和长度......并且顶部网格没有收到水龙头
最佳答案
问题出在 xaml 中...主网格在其他网格中...其他网格造成了问题...我想可能是点击次数多了
关于c# - GestureRecognizer 不适用于 ios xamarin.forms,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46385628/