開始研究Android平台軟件編程,Xamarin Mono for Android上手快,跨平台共享代碼,代價是bug多多,是一味可口的毒葯啊!
環境VS2012 + Xamarin Mono Android 4.10.01073
先實現個小功能熱熱身,建立一個新Android Application工程,修改Activity1.cs代碼如下:
using System; using Android.App; using Android.Content; using Android.Runtime; using Android.Views; using Android.Widget; using Android.OS; namespace MyXamarinApp { [Activity(Label = "MyXamarinApp", MainLauncher = true, Icon = "@drawable/icon")] public class Activity1 : Activity { int count = 1; DateTime? lastBackKeyDownTime; protected override void OnCreate(Bundle bundle) { base.OnCreate(bundle); // Set our view from the "main" layout resource SetContentView(Resource.Layout.Main); // Get our button from the layout resource, // and attach an event to it Button button = FindViewById<Button>(Resource.Id.MyButton); button.Click += delegate { button.Text = string.Format("{0} clicks!", count++); }; } public override bool OnKeyDown(Keycode keyCode, KeyEvent e) { if (keyCode == Keycode.Back && e.Action == KeyEventActions.Down) { if (!lastBackKeyDownTime.HasValue || DateTime.Now - lastBackKeyDownTime.Value > new TimeSpan(0, 0, 2)) { Toast.MakeText(this.ApplicationContext, "再按一次退出程序", ToastLength.Short).Show(); lastBackKeyDownTime = DateTime.Now; } else { Finish(); } return true; } return base.OnKeyDown(keyCode, e); } } }
功能很簡單,就不解釋了。請參照:http://www.cnblogs.com/weizilong/archive/2013/08/15/3259452.html