/// <summary>
/// Displays information to the user. The dialog box will have only
/// one button.
/// </summary>
/// <param name="message">The message to be shown to the user.</param>
/// <param name="title">The title of the dialog box. This may be null.</param>
/// <param name="buttonConfirmText">The text shown in the "confirm" button
/// in the dialog box. If left null, the text "OK" will be used.</param>
/// <param name="buttonCancelText">The text shown in the "cancel" button
/// in the dialog box. If left null, the text "Cancel" will be used.</param>
/// <param name="afterHideCallback">A callback that should be executed after
/// the dialog box is closed by the user. The callback method will get a boolean
/// parameter indicating if the "confirm" button (true) or the "cancel" button
/// (false) was pressed by the user.</param>
/// <returns>A Task allowing this async method to be awaited. The task will return
/// true or false depending on the dialog result.</returns>
/// <remarks>Displaying dialogs in Android is synchronous. As such,
/// this method will be executed synchronously even though it can be awaited
/// for cross-platform compatibility purposes.</remarks>
public Task <bool> ShowMessage(
string message,
string title,
string buttonConfirmText,
string buttonCancelText,
Action <bool> afterHideCallback)
{
Action <bool> callback = r =>
{
if (afterHideCallback != null)
{
afterHideCallback(r);
afterHideCallback = null;
}
};
AlertDialogInfo info = CreateDialog(
message,
title,
buttonConfirmText,
buttonCancelText ?? "Cancel",
callback);
info.Dialog.Show();
return(info.Tcs.Task);
}
/// <summary>
/// Displays information to the user. The dialog box will have only
/// one button with the text "OK".
/// </summary>
/// <param name="message">The message to be shown to the user.</param>
/// <param name="title">The title of the dialog box. This may be null.</param>
/// <returns>A Task allowing this async method to be awaited.</returns>
/// <remarks>Displaying dialogs in Android is synchronous. As such,
/// this method will be executed synchronously even though it can be awaited
/// for cross-platform compatibility purposes.</remarks>
public Task ShowMessage(string message, string title)
{
AlertDialogInfo info = CreateDialog(
message,
title);
info.Dialog.Show();
return(info.Tcs.Task);
}
/// <summary>
/// Displays information about an error.
/// </summary>
/// <param name="error">The exception of which the message must be shown to the user.</param>
/// <param name="title">The title of the dialog box. This may be null.</param>
/// <param name="buttonText">The text shown in the only button
/// in the dialog box. If left null, the text "OK" will be used.</param>
/// <param name="afterHideCallback">A callback that should be executed after
/// the dialog box is closed by the user.</param>
/// <returns>A Task allowing this async method to be awaited.</returns>
/// <remarks>Displaying dialogs in Android is synchronous. As such,
/// this method will be executed synchronously even though it can be awaited
/// for cross-platform compatibility purposes.</remarks>
public Task ShowError(Exception error, string title, string buttonText, Action afterHideCallback)
{
Action <bool> callback = r =>
{
if (afterHideCallback != null)
{
afterHideCallback();
afterHideCallback = null;
}
};
AlertDialogInfo info = CreateDialog(
error.Message,
title,
buttonText,
null,
callback);
info.Dialog.Show();
return(info.Tcs.Task);
}
