Xamarin自定义键盘

我正在尝试为特定页面创建custom keyboard ，并且在处理所有键的侦听器时遇到一些问题，并且此文档非常有限。

我正在使用Xamarin和C＃进行开发：

所以我在这里有一个活动（OrderActivity）：

 mKeyboard = new Keyboard(this,Resource.Layout.Keyboard); mKeyboardView = this.FindViewById (Resource.Id.keyboardview); mKeyboardView.Keyboard = mKeyboard; // PROBLEM HERE mKeyboardView.OnKeyboardActionListener = new KeyboardView.IOnKeyboardActionListener () {}; 

有一个Keyboard.axml，它们完美地显示在屏幕上，但我有问题，不知道如何调用监听器，这里有人有任何教程或如何解决这个问题？ 或者在创建自定义键盘时有其他选择吗？

Answer 1

正如侦听器的名称所示，它是您需要实现的Interface 。 C＃目前不像Java那样允许匿名类。

请记住，在实现Java接口时，您需要inheritanceJava.Lang.Object ，因为它需要一个句柄。

所以你的实现可能看起来像：

 public class KeyboardOnKeyEventArgs : KeyboardKeyCodeEventArgs { public Keycode[] KeyCodes { get; set; } } public class KeyboardKeyCodeEventArgs : EventArgs { public Keycode PrimaryCode { get; set; } } public class KeyboardOnTextEventArgs : EventArgs { public ICharSequence Text { get; set; } } public class MyKeyboardListener : Java.Lang.Object, KeyboardView.IOnKeyboardActionListener { public event EventHandler Key; public event EventHandler Press; public event EventHandler Release; public event EventHandler Text; public event EventHandler OnSwipeDown; public event EventHandler OnSwipeLeft; public event EventHandler OnSwipeRight; public event EventHandler OnSwipeUp; public void OnKey(Keycode primaryCode, Keycode[] keyCodes) { if (Key != null) Key(this, new KeyboardOnKeyEventArgs { KeyCodes = keyCodes, PrimaryCode = primaryCode }); } public void OnPress(Keycode primaryCode) { if (Press != null) Press(this, new KeyboardKeyCodeEventArgs { PrimaryCode = primaryCode }); } public void OnRelease(Keycode primaryCode) { if (Release != null) Release(this, new KeyboardKeyCodeEventArgs { PrimaryCode = primaryCode }); } public void OnText(ICharSequence text) { if (Text != null) Text(this, new KeyboardOnTextEventArgs {Text = text}); } public void SwipeDown() { if(OnSwipeDown != null) OnSwipeDown(this, EventArgs.Empty); } public void SwipeLeft() { if (OnSwipeLeft != null) OnSwipeLeft(this, EventArgs.Empty); } public void SwipeRight() { if (OnSwipeRight != null) OnSwipeRight(this, EventArgs.Empty); } public void SwipeUp() { if (OnSwipeUp != null) OnSwipeUp(this, EventArgs.Empty); } } 

用法是：

 var keyboardListener = new MyKeyboardListener(); keyboardListener.Press += (s, e) => { /* do something */ }; mKeyboardView.OnKeyboardActionListener = keyboardListener; 

编辑：

用它工作了一点，我无法重现你的错误。

keyboard.xml

Main.axml

slide_up.xml

MyKeyboardListener.cs

 public class MyKeyboardListener : Java.Lang.Object, KeyboardView.IOnKeyboardActionListener { private readonly Activity _activity; public MyKeyboardListener(Activity activity) { _activity = activity; } public void OnKey(Keycode primaryCode, Keycode[] keyCodes) { var eventTime = DateTime.Now.Ticks; var keyEvent = new KeyEvent(eventTime, eventTime, KeyEventActions.Down, primaryCode, 0); _activity.DispatchKeyEvent(keyEvent); } public void OnPress(Keycode primaryCode) { } public void OnRelease(Keycode primaryCode) { } public void OnText(ICharSequence text) { } public void SwipeDown() { } public void SwipeLeft() { } public void SwipeRight() { } public void SwipeUp() { } } 

MainActivity.cs

 [Activity(Label = "App14", MainLauncher = true, Icon = "@drawable/icon")] public class MainActivity : Activity { private Keyboard _keyBoard; private EditText _targetView; private KeyboardView _keyboardView; protected override void OnCreate(Bundle bundle) { base.OnCreate(bundle); // Set our view from the "main" layout resource SetContentView(Resource.Layout.Main); _keyBoard = new Keyboard(this, Resource.Xml.keyboard); _keyboardView = FindViewById(Resource.Id.keyboard_view); _keyboardView.Keyboard = _keyBoard; _keyboardView.OnKeyboardActionListener = new MyKeyboardListener(this); _targetView = FindViewById(Resource.Id.target); _targetView.Touch += (sender, args) => { var bottomUp = AnimationUtils.LoadAnimation(this, Resource.Animation.slide_up); _keyboardView.StartAnimation(bottomUp); _keyboardView.Visibility = ViewStates.Visible; args.Handled = true; }; } } 

键盘节目和字符被分派到EditText 。

Answer 2

关于如何隐藏软键盘弹出添加到您的Activity属性：

WindowSoftInputMode = Android.Views.SoftInput.StateAlwaysHidden

像这样：

Activity(MainLauncher = true, WindowSoftInputModeAndroid.Views.SoftInput.StateAlwaysHidden)