using System;
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using Android.App;
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using Android.Content;
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namespace Shared
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{
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/// <summary>
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/// 对话框
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/// </summary>
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public class Alert
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{
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/// <summary>
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/// 当前信息框对象
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/// </summary>
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AlertDialog.Builder builder;
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/// <summary>
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/// 对话窗
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/// </summary>
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/// <param name="title">标题</param>
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/// <param name="message">信息</param>
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/// <param name="cancelButtonText">取消按键备注，值null表示不显示取消按键</param>
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/// <param name="okButtonText">确认按键备注</param>
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public Alert (string title, string message, string cancelButtonText, string okButtonText)
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{
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builder = new AlertDialog.Builder (Application.Activity);
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builder.SetMessage (message);
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builder.SetTitle (title);
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builder.SetCancelable (false);
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builder.SetPositiveButton (okButtonText, new EventHandler<DialogClickEventArgs> ((sender, e) => {
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if (ResultEventHandler != null) {
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ResultEventHandler (this, true);
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}
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}));
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if (cancelButtonText != null) {
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builder.SetNegativeButton (cancelButtonText, new EventHandler<DialogClickEventArgs> ((sender, e) => {
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if (ResultEventHandler != null) {
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ResultEventHandler (this, false);
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}
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}));
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}
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}
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/// <summary>
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/// 对话窗
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/// </summary>
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/// <param name="title">标题</param>
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/// <param name="message">信息</param>
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/// <param name="okButtonText">确认按键备注</param>
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public Alert (string title, string message, string okButtonText) : this (title, message, null, okButtonText) { }
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/// <summary>
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/// 结果通知事件，true表示选中按键，false表示取消事件
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/// </summary>
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public event EventHandler<bool> ResultEventHandler;
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/// <summary>
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/// 显示当前的界面
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/// </summary>
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public void Show()
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{
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builder.Show();
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}
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}
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}
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