[英]Dealing with iOS and Android diferences on xamarin.forms
我正在构建一个跨平台应用程序。 我刚刚完成了原型,并且在Android上运行良好。 但是,我开始在iOS上测试该原型,但遇到了一些我不知道如何解决的问题,希望大家能帮助我。
所以,现在我有2个问题:1st>在listview的android按钮上是识别其事件处理程序/命令并触发事件。 但是在iPhone上,它被忽略了。
2nd> iPhone似乎在我的视图中添加了一些没有出现在android上的图标,它们对我没有任何帮助。 有什么办法可以删除它们?
Xaml:
<local:CustomListView.ItemTemplate>
<DataTemplate>
<local:CustomViewCell>
<ContentView Padding="10,10,10,0">
<Frame BackgroundColor="{Binding Cor}" CornerRadius="5">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="15"/>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="20"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="20"/>
</Grid.ColumnDefinitions>
<Button Grid.Row="0" Grid.Column="2" Image="{Binding ImageSource}" Rotation="90" BackgroundColor="Transparent" HorizontalOptions="EndAndExpand"
CommandParameter="{Binding .}" Command="{Binding BindingContext.CommandoOpcoes, Source={x:Reference tarefas}}"/>
<Image Grid.Row="0" Grid.Column="0" Grid.RowSpan="2" Scale="0.7" Source="{local:ImageResource x.Images.location1.png}"/>
<Label Grid.Row="0" Grid.Column="1" Grid.RowSpan="2" Grid.ColumnSpan="2" Text="{Binding Titulo}" FontAttributes="Bold" FontSize="Medium" VerticalTextAlignment="Center"/>
<Image Grid.Row="2" Grid.Column="0" Scale="0.7" Source="{local:ImageResource x.Images.clock.png}"/>
<Label Text="{Binding Duracao}" Grid.Row="2" Grid.Column="1" Grid.ColumnSpan="2" VerticalTextAlignment="Center"/>
<Image Grid.Row="3" Grid.Column="0" Scale="0.7" Source="{local:ImageResource x.Images.location2.png}"/>
<Label Grid.Row="3" Grid.Column="1" Grid.ColumnSpan="2" Text="{Binding ObjectivoAno}" VerticalTextAlignment="Center"/>
</Grid>
</Frame>
</ContentView>
查看模型:
public Command CommandoOpcoes
{
get;
private set;
}
/*
* Menu de um item da lista clicado
* Apresenta opções de editar, apagar e marcar uma tarefa como concluída
*/
private void MostraOpcoes(object t)
{
var Tarefa = t as Tarefa;
async void apagarTarefa()
{
var res = await App.Current?.MainPage?.DisplayAlert(AppResource.Confirmacao, AppResource.Apagar, AppResource.Nao, AppResource.Sim);
if (res == false)
{
Tarefas.Remove(Tarefa);
NTarefas--;
}
}
async void editarTarefa()
{
var page = new EditarTarefa()
{
BindingContext = Tarefa
};
if (PopupNavigation.Instance.PopupStack.Count > 0)
await PopupNavigation.Instance.PopAllAsync(false);
await PopupNavigation.Instance.PushAsync(page, true);
}
void completarTarefa()
{
if (Tarefa.Cumprido == false)
{
Tarefa.Cumprido = true;
Tarefa.Cor = Color.FromHex("#E5F2E5");
NTarefasConcluidos++;
if (NTarefasNaoConcluidos > 0)
NTarefasNaoConcluidos--;
}
else
{
Tarefa.Cumprido = false;
Tarefa.Cor = Color.FromHex("#FFE5E5");
NTarefasNaoConcluidos++;
if (NTarefasConcluidos > 0)
NTarefasConcluidos--;
}
}
ActionSheetConfig config = new ActionSheetConfig();
if (Tarefa.Cumprido)
config.Add(AppResource.nCompleto, completarTarefa, "completo.png");
else
{
config.Add(AppResource.EditarTarefa, editarTarefa, "edit.png");
config.Add(AppResource.Completo, completarTarefa, "completo.png");
}
config.SetDestructive(AppResource.ApagarTarefa, apagarTarefa, "delete.png");
config.UseBottomSheet = true;
UserDialogs.Instance.ActionSheet(config).Dispose();
UserDialogs.Instance.ActionSheet(config);
}
public TarefasViewModel()
{
Tarefas = new ObservableCollection<Tarefa>(App.tarefas.Where(x => x.Data == DateTime.Today).ToList());
NTarefas = Tarefas.Count;
NTarefasConcluidos = Tarefas.Where(x => x.Cumprido == true).Count();
NTarefasNaoConcluidos = Tarefas.Where(x => x.Cumprido == false).Count();
CommandoOpcoes = new Command(q => MostraOpcoes(q));
}
iOS上带有不需要的图标的视图图像: https : //imgur.com/VTXRXNh
Android上的图片: https : //imgur.com/v6dfkEW
所以,我找到了解决方案。 这非常简单。在ViewCell上,StyleId属性可以将公开按钮添加到iOS列表中。 为了没有这些公开按钮,我只做了:
<ViewCell StyeleId="none">...</ViewCell>
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