Link javadoc to Android reference
diff --git a/docs/javadoc/index-all.html b/docs/javadoc/index-all.html
index eb270eb..d390e51 100644
--- a/docs/javadoc/index-all.html
+++ b/docs/javadoc/index-all.html
@@ -269,12 +269,12 @@
 <dl>
 <dt><a href="com/davemorrissey/labs/subscaleview/decoder/ImageDecoder.html" title="interface in com.davemorrissey.labs.subscaleview.decoder"><span class="typeNameLink">ImageDecoder</span></a> - Interface in <a href="com/davemorrissey/labs/subscaleview/decoder/package-summary.html">com.davemorrissey.labs.subscaleview.decoder</a></dt>
 <dd>
-<div class="block">Interface for image decoding classes, allowing the default <code>BitmapFactory</code>
+<div class="block">Interface for image decoding classes, allowing the default <a href="https://developer.android.com/reference/android/graphics/BitmapFactory.html?is-external=true" title="class or interface in android.graphics"><code>BitmapFactory</code></a>
  based on the Skia library to be replaced with a custom class.</div>
 </dd>
 <dt><a href="com/davemorrissey/labs/subscaleview/decoder/ImageRegionDecoder.html" title="interface in com.davemorrissey.labs.subscaleview.decoder"><span class="typeNameLink">ImageRegionDecoder</span></a> - Interface in <a href="com/davemorrissey/labs/subscaleview/decoder/package-summary.html">com.davemorrissey.labs.subscaleview.decoder</a></dt>
 <dd>
-<div class="block">Interface for image decoding classes, allowing the default <code>BitmapRegionDecoder</code>
+<div class="block">Interface for image decoding classes, allowing the default <a href="https://developer.android.com/reference/android/graphics/BitmapRegionDecoder.html?is-external=true" title="class or interface in android.graphics"><code>BitmapRegionDecoder</code></a>
  based on the Skia library to be replaced with a custom class.</div>
 </dd>
 <dt><a href="com/davemorrissey/labs/subscaleview/ImageSource.html" title="class in com.davemorrissey.labs.subscaleview"><span class="typeNameLink">ImageSource</span></a> - Class in <a href="com/davemorrissey/labs/subscaleview/package-summary.html">com.davemorrissey.labs.subscaleview</a></dt>
@@ -594,7 +594,7 @@
 <dt><span class="memberNameLink"><a href="com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.html#setExecutor-java.util.concurrent.Executor-">setExecutor(Executor)</a></span> - Method in class com.davemorrissey.labs.subscaleview.<a href="com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.html" title="class in com.davemorrissey.labs.subscaleview">SubsamplingScaleImageView</a></dt>
 <dd>
 <div class="block">
- Provide an <code>Executor</code> to be used for loading images.</div>
+ Provide an <a href="https://developer.android.com/reference/java/util/concurrent/Executor.html?is-external=true" title="class or interface in java.util.concurrent"><code>Executor</code></a> to be used for loading images.</div>
 </dd>
 <dt><span class="memberNameLink"><a href="com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.html#setImage-com.davemorrissey.labs.subscaleview.ImageSource-">setImage(ImageSource)</a></span> - Method in class com.davemorrissey.labs.subscaleview.<a href="com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.html" title="class in com.davemorrissey.labs.subscaleview">SubsamplingScaleImageView</a></dt>
 <dd>
@@ -702,7 +702,7 @@
 <dt><a href="com/davemorrissey/labs/subscaleview/decoder/SkiaImageDecoder.html" title="class in com.davemorrissey.labs.subscaleview.decoder"><span class="typeNameLink">SkiaImageDecoder</span></a> - Class in <a href="com/davemorrissey/labs/subscaleview/decoder/package-summary.html">com.davemorrissey.labs.subscaleview.decoder</a></dt>
 <dd>
 <div class="block">Default implementation of <a href="com/davemorrissey/labs/subscaleview/decoder/ImageDecoder.html" title="interface in com.davemorrissey.labs.subscaleview.decoder"><code>ImageDecoder</code></a>
- using Android's <code>BitmapFactory</code>, based on the Skia library.</div>
+ using Android's <a href="https://developer.android.com/reference/android/graphics/BitmapFactory.html?is-external=true" title="class or interface in android.graphics"><code>BitmapFactory</code></a>, based on the Skia library.</div>
 </dd>
 <dt><span class="memberNameLink"><a href="com/davemorrissey/labs/subscaleview/decoder/SkiaImageDecoder.html#SkiaImageDecoder--">SkiaImageDecoder()</a></span> - Constructor for class com.davemorrissey.labs.subscaleview.decoder.<a href="com/davemorrissey/labs/subscaleview/decoder/SkiaImageDecoder.html" title="class in com.davemorrissey.labs.subscaleview.decoder">SkiaImageDecoder</a></dt>
 <dd>&nbsp;</dd>
@@ -711,7 +711,7 @@
 <dt><a href="com/davemorrissey/labs/subscaleview/decoder/SkiaImageRegionDecoder.html" title="class in com.davemorrissey.labs.subscaleview.decoder"><span class="typeNameLink">SkiaImageRegionDecoder</span></a> - Class in <a href="com/davemorrissey/labs/subscaleview/decoder/package-summary.html">com.davemorrissey.labs.subscaleview.decoder</a></dt>
 <dd>
 <div class="block">Default implementation of <a href="com/davemorrissey/labs/subscaleview/decoder/ImageRegionDecoder.html" title="interface in com.davemorrissey.labs.subscaleview.decoder"><code>ImageRegionDecoder</code></a>
- using Android's <code>BitmapRegionDecoder</code>, based on the Skia library.</div>
+ using Android's <a href="https://developer.android.com/reference/android/graphics/BitmapRegionDecoder.html?is-external=true" title="class or interface in android.graphics"><code>BitmapRegionDecoder</code></a>, based on the Skia library.</div>
 </dd>
 <dt><span class="memberNameLink"><a href="com/davemorrissey/labs/subscaleview/decoder/SkiaImageRegionDecoder.html#SkiaImageRegionDecoder--">SkiaImageRegionDecoder()</a></span> - Constructor for class com.davemorrissey.labs.subscaleview.decoder.<a href="com/davemorrissey/labs/subscaleview/decoder/SkiaImageRegionDecoder.html" title="class in com.davemorrissey.labs.subscaleview.decoder">SkiaImageRegionDecoder</a></dt>
 <dd>&nbsp;</dd>
@@ -720,7 +720,7 @@
 <dt><a href="com/davemorrissey/labs/subscaleview/decoder/SkiaPooledImageRegionDecoder.html" title="class in com.davemorrissey.labs.subscaleview.decoder"><span class="typeNameLink">SkiaPooledImageRegionDecoder</span></a> - Class in <a href="com/davemorrissey/labs/subscaleview/decoder/package-summary.html">com.davemorrissey.labs.subscaleview.decoder</a></dt>
 <dd>
 <div class="block">
- An implementation of <a href="com/davemorrissey/labs/subscaleview/decoder/ImageRegionDecoder.html" title="interface in com.davemorrissey.labs.subscaleview.decoder"><code>ImageRegionDecoder</code></a> using a pool of <code>BitmapRegionDecoder</code>s,
+ An implementation of <a href="com/davemorrissey/labs/subscaleview/decoder/ImageRegionDecoder.html" title="interface in com.davemorrissey.labs.subscaleview.decoder"><code>ImageRegionDecoder</code></a> using a pool of <a href="https://developer.android.com/reference/android/graphics/BitmapRegionDecoder.html?is-external=true" title="class or interface in android.graphics"><code>BitmapRegionDecoder</code></a>s,
  to provide true parallel loading of tiles.</div>
 </dd>
 <dt><span class="memberNameLink"><a href="com/davemorrissey/labs/subscaleview/decoder/SkiaPooledImageRegionDecoder.html#SkiaPooledImageRegionDecoder--">SkiaPooledImageRegionDecoder()</a></span> - Constructor for class com.davemorrissey.labs.subscaleview.decoder.<a href="com/davemorrissey/labs/subscaleview/decoder/SkiaPooledImageRegionDecoder.html" title="class in com.davemorrissey.labs.subscaleview.decoder">SkiaPooledImageRegionDecoder</a></dt>