问题描述
我正在Xamarin Forms应用程序中工作,我们想浏览不同的条目(不使用TabIndex,因为我们需要自定义逻辑),但是我们希望在循环浏览条目时始终保持键盘处于打开状态。我们正在使用ReturnCommand来聚焦NEXT项。
解决方法
在您的Android项目中创建 CustomEntryRenderer :
[assembly: ExportRenderer(typeof(Entry),typeof(CustomEntryRenderer))]
namespace your namespace
class CustomEntryRenderer:EntryRenderer
{
public CustomEntryRenderer(Context context):base(context)
{
}
protected override void OnElementChanged(ElementChangedEventArgs<Entry> e)
{
base.OnElementChanged(e);
}
}
并将其添加到您的MainActivity中:
private bool _lieAboutCurrentFocus;
public override bool DispatchTouchEvent(MotionEvent ev)
{
var focused = CurrentFocus;
bool customEntryRendererFocused = focused != null && focused.Parent is CustomEntryRenderer;
_lieAboutCurrentFocus = customEntryRendererFocused;
var result = base.DispatchTouchEvent(ev);
_lieAboutCurrentFocus = false;
return result;
}
public override Android.Views.View CurrentFocus
{
get
{
if (_lieAboutCurrentFocus)
{
return null;
}
return base.CurrentFocus;
}
}