private static PlatformIdiom GetIdiom()
{
#if ANDROID
var context = XamarinFormsAndroidToolkitExtensions.GetContext();
int minWidthDp = context.Resources.Configuration.SmallestScreenWidthDp;
return(minWidthDp >= 600 ? PlatformIdiom.Tablet : PlatformIdiom.Phone);
#elif TOUCH
return(XamarinFormsTouchToolkitExtensions.GetIdiom());
#elif WINDOWS_UWP
switch (AnalyticsInfo.VersionInfo.DeviceFamily)
{
case "Windows.Mobile":
return(PlatformIdiom.Phone);
case "Windows.Desktop":
return(UIViewSettings.GetForCurrentView().UserInteractionMode == UserInteractionMode.Mouse
? PlatformIdiom.Desktop
: PlatformIdiom.Tablet);
default:
return(PlatformIdiom.Unknown);
}
#else
return(PlatformIdiom.Unknown);
#endif
}
private static Action GetSendBackButtonPressedImpl(object page)
{
var activity = GetActivity(XamarinFormsAndroidToolkitExtensions.GetCurrentContext());
if (activity == null)
{
return(null);
}
return(activity.OnBackPressed);
}
protected virtual void ShowInternal(object content, float duration, ToastPosition position, IDataContext context, ToastWrapper wrapper)
{
#if XAMARIN_FORMS
var ctx = XamarinFormsAndroidToolkitExtensions.GetCurrentContext();
#else
var ctx = AndroidToolkitExtensions.CurrentActivity;
#endif
if (ctx == null)
{
wrapper.Cancel();
return;
}
Toast toast = null;
#if !XAMARIN_FORMS
var selector = ctx.GetBindingMemberValue(AttachedMembers.Activity.ToastTemplateSelector);
if (selector != null)
{
toast = (Toast)selector.SelectTemplate(content, ctx);
}
#endif
if (toast == null)
{
View view = GetView(content, ctx);
toast = view == null
? Toast.MakeText(ctx, content?.ToString() ?? "(null)", ToastLength.Long)
: new Toast(ctx)
{
View = view
};
}
ServiceProvider
.AttachedValueProvider
.AddOrUpdate(ctx, ToastWrapperMember, (c, o) =>
{
wrapper.Show(toast, duration, position);
return(wrapper);
}, (item, value, oldValue, state) =>
{
oldValue.Close();
return(value(item, state));
});
}
private void ShowMessage(string messageBoxText, string caption, MessageButton button, MessageImage icon,
MessageResult defaultResult,
TaskCompletionSource <MessageResult> tcs)
{
#if XAMARIN_FORMS
var context = XamarinFormsAndroidToolkitExtensions.GetCurrentContext();
#else
Context context = AndroidToolkitExtensions.CurrentActivity;
#endif
var act = context as Activity;
if (act != null && act.IsFinishing)
{
context = Application.Context;
}
if (context == null)
{
Tracer.Error($"{nameof(MessagePresenter)}: The current top activity is null.");
tcs.TrySetResult(defaultResult);
return;
}
AlertDialog.Builder builder = new AlertDialog.Builder(context)
.SetTitle(caption)
.SetMessage(messageBoxText)
.SetCancelable(false);
switch (button)
{
case MessageButton.Ok:
builder.SetPositiveButton(GetButtonText(MessageResult.Ok),
(sender, args) => tcs.TrySetResult(MessageResult.Ok));
break;
case MessageButton.OkCancel:
builder.SetPositiveButton(GetButtonText(MessageResult.Ok),
(sender, args) => tcs.TrySetResult(MessageResult.Ok));
builder.SetNegativeButton(GetButtonText(MessageResult.Cancel),
(sender, args) => tcs.TrySetResult(MessageResult.Cancel));
break;
case MessageButton.YesNo:
builder.SetPositiveButton(GetButtonText(MessageResult.Yes),
(sender, args) => tcs.TrySetResult(MessageResult.Yes));
builder.SetNegativeButton(GetButtonText(MessageResult.No),
(sender, args) => tcs.TrySetResult(MessageResult.No));
break;
case MessageButton.YesNoCancel:
builder.SetPositiveButton(GetButtonText(MessageResult.Yes),
(sender, args) => tcs.TrySetResult(MessageResult.Yes));
if (Build.VERSION.SdkInt >= BuildVersionCodes.Lollipop)
{
builder.SetNegativeButton(GetButtonText(MessageResult.No),
(sender, args) => tcs.TrySetResult(MessageResult.No));
builder.SetNeutralButton(GetButtonText(MessageResult.Cancel),
(sender, args) => tcs.TrySetResult(MessageResult.Cancel));
}
else
{
builder.SetNeutralButton(GetButtonText(MessageResult.No),
(sender, args) => tcs.TrySetResult(MessageResult.No));
builder.SetNegativeButton(GetButtonText(MessageResult.Cancel),
(sender, args) => tcs.TrySetResult(MessageResult.Cancel));
}
break;
case MessageButton.AbortRetryIgnore:
builder.SetPositiveButton(GetButtonText(MessageResult.Abort),
(sender, args) => tcs.TrySetResult(MessageResult.Abort));
builder.SetNeutralButton(GetButtonText(MessageResult.Retry),
(sender, args) => tcs.TrySetResult(MessageResult.Retry));
builder.SetNegativeButton(GetButtonText(MessageResult.Ignore),
(sender, args) => tcs.TrySetResult(MessageResult.Ignore));
break;
case MessageButton.RetryCancel:
builder.SetPositiveButton(GetButtonText(MessageResult.Retry),
(sender, args) => tcs.TrySetResult(MessageResult.Retry));
builder.SetNegativeButton(GetButtonText(MessageResult.Cancel),
(sender, args) => tcs.TrySetResult(MessageResult.Cancel));
break;
default:
throw new ArgumentOutOfRangeException(nameof(button));
}
int?drawable = GetIconResource(icon);
if (drawable != null)
{
builder.SetIcon(drawable.Value);
}
AlertDialog dialog = builder.Create();
#if !XAMARIN_FORMS
var activityView = context as IActivityView;
if (activityView != null)
{
EventHandler <Activity, EventArgs> handler = null;
handler = (sender, args) =>
{
((IActivityView)sender).Mediator.Destroyed -= handler;
tcs.TrySetResult(defaultResult);
};
activityView.Mediator.Destroyed += handler;
}
#endif
dialog.Show();
}
