MvvmCross: Droid - Workaround for Android Images issues (OOM). Based on the use of AQuery: https://code.google.com/p/android-query/ (https://github.com/androidquery/androidquery) and its Xamarin binding https://github.com/Kiranbhat2005/AQueryXamarin

AQImageView.cs

using Android.Content;
using Android.Util;
using Android.Widget;
using System;
using Com.Androidquery;
 
namespace Sescandell.App.Mobile.Droid.Views.Controls
{
    class AQImageView : ImageView
    {
        private readonly AQuery aQuery;
        private int _defaultSource;
        public AQImageView(Context context, IAttributeSet attrs)
            : base(context, attrs)
        {
            aQuery = new AQuery(this);
            _defaultSource = attrs.GetAttributeResourceValue("http://schemas.android.com/apk/res/android", "src", 0);
        }
 
        public int FallbackResource
        {
            get { return _defaultSource; }
            set { _defaultSource = value; }
        }
 
        private string _imageUrl;
 
        public string ImageUrl
        {
            get { return _imageUrl; }
            set
            {
                _imageUrl = value;
                if (!String.IsNullOrEmpty(_imageUrl))
                {
                    aQuery.Image(_imageUrl, true, true, 0, _defaultSource);
                }
                else
                {
                    SetImageResource(_defaultSource);
                }
            }
        }
    }
}

LayoutFile.axml

...
<!-- Using hard coded common default image -->
<AQImageView
    android:id="@+id/MyImageViewId"
    android:layout_width="45dp"
    android:layout_height="45dp"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:src="@drawable/default_image"
    local:MvxBind="ImageUrl MyObject.MyPropertyPicture"
    android:layout_margin="5dp" />
    ...

<!-- Using Binding for default image. -->
<!-- Known issues: fallback Binding must be define before ImageUrl one -->
<!-- Note here the android:src parameter is useless -->
<AQImageView
    android:id="@+id/MyOtherImageViewId"
    android:layout_width="45dp"
    android:layout_height="45dp"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:src="@drawable/default_image" 
    local:MvxBind="FallbackResource MyConverter(MyObject.SomeProperty); ImageUrl MyObject.MyPropertyImage"
    android:layout_margin="5dp" />