Android 条目中的显示/隐藏图标未显示

我正在尝试为我的条目创建显示/隐藏密码

在Android项目上添加此代码之后。显示和隐藏效果正在工作。但是显示和隐藏效果的图标在条目内不可见

using Android.Graphics.Drawables;
using Android.Text.Method;
using Android.Views;
using Android.Widget;
using Xamarin.Forms;
using Xamarin.Forms.Platform.Android;

[assembly: ResolutionGroupName("Xamarin")]
[assembly: ExportEffect(typeof(ShowHidePassEx.Droid.Effects.ShowHidePassEffect), "ShowHidePassEffect")]
namespace ShowHidePassEx.Droid.Effects
{
    public class ShowHidePassEffect : PlatformEffect
    {


        protected override void OnAttached()
        {
            ConfigureControl();
        }

        protected override void OnDetached()
        {
        }

        private void ConfigureControl()
        {
            EditText editText = ((EditText)Control);
            editText.SetCompoundDrawablesRelativeWithIntrinsicBounds(0,0, Resource.Drawable.avd_show_password,0);
            editText.SetOnTouchListener(new OnDrawableTouchListener());

        }
    }

    public class OnDrawableTouchListener : Java.Lang.Object, Android.Views.View.IOnTouchListener
    {
        public bool OnTouch(Android.Views.View v, MotionEvent e)
        {
            if (v is EditText && e.Action == MotionEventActions.Up)
            {
                EditText editText = (EditText)v;
                if (e.RawX >= (editText.Right - editText.GetCompoundDrawables()[2].Bounds.Width()))
                {
                    if (editText.TransformationMethod == null)
                    {
                        editText.TransformationMethod = PasswordTransformationMethod.Instance;
                        editText.SetCompoundDrawablesRelativeWithIntrinsicBounds(0, 0, Resource.Drawable.avd_show_password, 0);
                    }
                    else
                    {
                        editText.TransformationMethod = null;
                        editText.SetCompoundDrawablesRelativeWithIntrinsicBounds(0, 0, Resource.Drawable.avd_hide_password, 0);
                    }

                    return true;
                }
            }

            return false;
        }
    }
}

---

我做得对吗？没有在条目中显示图标的可能原因是什么？解决方法是什么？

好吧，我想我找到了答案

问题是,

  editText.SetCompoundDrawablesRelativeWithIntrinsicBounds(0, 0, Resource.Drawable.avd_hide_password, 0);

我把它改成这个

  editText.SetCompoundDrawablesRelativeWithIntrinsicBounds(null, null, GetDrawable(proyekto4juan.Droid.Resource.Mipmap.HidePass), null);

对于

GetDrawable

函数

public static BitmapDrawable GetDrawable(int resID)
{
    var context = global::Android.App.Application.Context;
    var drawable = ContextCompat.GetDrawable(context, resID);
    var bitmap = ((BitmapDrawable)drawable).Bitmap;
    return new BitmapDrawable(Resources.System, Bitmap.CreateScaledBitmap(bitmap, 60, 60, true));
}

---

GetDrawable

功能用于调整条目内图标的大小。

接受您的答案，以便其他人可以尝试使用它