我已经阅读了论坛、StackOverflow 和其他地方关于制作自定义键盘的许多帖子,但还没有找到适用于我的 Xamarin 表单跨平台项目的方法。它以编程方式生成。
例如,我构建了在几个地方推荐的这个键盘:
我尝试将其集成到我的 Xamarin 表单应用程序中,但无法执行此操作
https://github.com/Vaikesh/CustomKeyboard/blob/master/CustomKeyboard/Activity1.cs
它作为一个独立的工作正常
我要 Hebrew language keyboard
在我的应用程序中像这样
我将不胜感激任何帮助。
谢谢你。
最佳答案
Custom Keyboard in Xamarin forms
您可以创建一个
PageRenderer
并使用 native .axml
布局文件以创建自定义 Keyboard
.例如,我的
KeyboardPageRenderer
:[assembly: ExportRenderer(typeof(MyKeyboardPage), typeof(KeyboardPageRenderer))]
...
public class KeyboardPageRenderer : PageRenderer
{
public CustomKeyboardView mKeyboardView;
public EditText mTargetView;
public Android.InputMethodServices.Keyboard mKeyboard;
Activity activity;
global::Android.Views.View view;
protected override void OnElementChanged(ElementChangedEventArgs<Page> e)
{
base.OnElementChanged(e);
if (e.OldElement != null || Element == null)
{
return;
}
try
{
SetupUserInterface();
SetupEventHandlers();
this.AddView(view);
}
catch (System.Exception ex)
{
System.Diagnostics.Debug.WriteLine(@" ERROR: ", ex.Message);
}
}
void SetupUserInterface()
{
activity = this.Context as Activity;
view = activity.LayoutInflater.Inflate(Resource.Layout.activity_keyboard, this, false);
mKeyboard = new Android.InputMethodServices.Keyboard(Context, Resource.Xml.keyboard);
mTargetView = view.FindViewById<EditText>(Resource.Id.target);
mKeyboardView = view.FindViewById<CustomKeyboardView>(Resource.Id.keyboard_view);
mKeyboardView.Keyboard = mKeyboard;
}
void SetupEventHandlers()
{
mTargetView.Touch += (sender, e) =>
{
ShowKeyboardWithAnimation();
e.Handled = false;
mTargetView.ShowSoftInputOnFocus = false;
};
mKeyboardView.Key += async (sender, e) =>
{
long eventTime = JavaSystem.CurrentTimeMillis();
KeyEvent ev = new KeyEvent(eventTime, eventTime, KeyEventActions.Down, e.PrimaryCode, 0, 0, 0, 0, KeyEventFlags.SoftKeyboard | KeyEventFlags.KeepTouchMode);
DispatchKeyEvent(ev);
await Task.Delay(1);
mTargetView.RequestFocus();
};
}
public void ShowKeyboardWithAnimation()
{
if (mKeyboardView.Visibility == ViewStates.Gone)
{
mKeyboardView.Visibility = ViewStates.Visible;
Android.Views.Animations.Animation animation = AnimationUtils.LoadAnimation(
Context,
Resource.Animation.slide_in_bottom
);
mKeyboardView.ShowWithAnimation(animation);
}
}
protected override void OnLayout(bool changed, int l, int t, int r, int b)
{
base.OnLayout(changed, l, t, r, b);
var msw = MeasureSpec.MakeMeasureSpec(r - l, MeasureSpecMode.Exactly);
var msh = MeasureSpec.MakeMeasureSpec(b - t, MeasureSpecMode.Exactly);
view.Measure(msw, msh);
view.Layout(0, 0, r - l, b - t);
}
}
效果:
.
我写了一个关于如何实现这个功能的简单演示,你可以在这个 GitHub Repository 中看到它。 .
我不懂希伯来语,如果你要达到你发的图片的效果,你需要在
keyboard.xml
中自定义布局。文件。更新:
I am done iOS portion using entry render so only try to do for android portion
我写了
EntryRenderer
要实现此功能,效果类似于 this ,希望可以帮到你。public class MyEntry2Renderer : ViewRenderer<MyEntry, TextInputLayout>,
ITextWatcher,
TextView.IOnEditorActionListener
{
private bool _hasFocus;
public CustomKeyboardView mKeyboardView;
public Android.InputMethodServices.Keyboard mKeyboard;
ViewGroup activityRootView;
protected EditText EditText => Control.EditText;
public bool OnEditorAction(TextView v, ImeAction actionId, KeyEvent e)
{
if ((actionId == ImeAction.Done) || ((actionId == ImeAction.ImeNull) && (e.KeyCode == Keycode.Enter)))
{
Control.ClearFocus();
//HideKeyboard();
((IEntryController)Element).SendCompleted();
}
return true;
}
public virtual void AfterTextChanged(IEditable s)
{
}
public virtual void BeforeTextChanged(ICharSequence s, int start, int count, int after)
{
}
public virtual void OnTextChanged(ICharSequence s, int start, int before, int count)
{
if (string.IsNullOrWhiteSpace(Element.Text) && (s.Length() == 0)) return;
((IElementController)Element).SetValueFromRenderer(Entry.TextProperty, s.ToString());
}
protected override TextInputLayout CreateNativeControl()
{
var textInputLayout = new TextInputLayout(Context);
var editText = new EditText(Context);
#region Add the custom Keyboard in your Page
var activity = Forms.Context as Activity;
var rootView = activity.Window.DecorView.FindViewById(Android.Resource.Id.Content);
activity.Window.SetSoftInputMode(SoftInput.StateAlwaysHidden);
activityRootView = ((ViewGroup)rootView).GetChildAt(0) as ViewGroup;
mKeyboardView = new CustomKeyboardView(Forms.Context, null);
Android.Widget.RelativeLayout.LayoutParams layoutParams =
new Android.Widget.RelativeLayout.LayoutParams(LayoutParams.MatchParent, LayoutParams.WrapContent); // or wrap_content
layoutParams.AddRule(LayoutRules.AlignParentBottom);
activityRootView.AddView(mKeyboardView, layoutParams);
#endregion
//First open the current page, hide the Keyboard
mKeyboardView.Visibility = ViewStates.Gone;
//Use the custom Keyboard
mKeyboard = new Android.InputMethodServices.Keyboard(Context, Resource.Xml.keyboard2);
mKeyboardView.Keyboard = mKeyboard;
mKeyboardView.Key += async (sender, e) =>
{
long eventTime = JavaSystem.CurrentTimeMillis();
KeyEvent ev = new KeyEvent(eventTime, eventTime, KeyEventActions.Down, e.PrimaryCode, 0, 0, 0, 0, KeyEventFlags.SoftKeyboard | KeyEventFlags.KeepTouchMode);
DispatchKeyEvent(ev);
await Task.Delay(1);
};
textInputLayout.AddView(editText);
return textInputLayout;
}
protected override void OnElementChanged(ElementChangedEventArgs<MyEntry> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
if (Control != null)
EditText.FocusChange -= ControlOnFocusChange;
if (e.NewElement != null)
{
var ctrl = CreateNativeControl();
SetNativeControl(ctrl);
EditText.ShowSoftInputOnFocus = false;
EditText.FocusChange += ControlOnFocusChange;
}
}
private void ControlOnFocusChange(object sender, FocusChangeEventArgs args)
{
_hasFocus = args.HasFocus;
if (_hasFocus)
{
EditText.Post(() =>
{
EditText.RequestFocus();
ShowKeyboardWithAnimation();
});
}
else
{
//Hide the Keyboard
mKeyboardView.Visibility = ViewStates.Gone;
}
}
public void ShowKeyboardWithAnimation()
{
if (mKeyboardView.Visibility == ViewStates.Gone)
{
mKeyboardView.Visibility = ViewStates.Visible;
Android.Views.Animations.Animation animation = AnimationUtils.LoadAnimation(
Context,
Resource.Animation.slide_in_bottom
);
mKeyboardView.ShowWithAnimation(animation);
}
}
}
关于xamarin.forms - Xamarin 形式的自定义键盘,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47787385/