diff --git a/app/src/main/java/com/davemorrissey/labs/subscaleview/ImageSource.kt b/app/src/main/java/com/davemorrissey/labs/subscaleview/ImageSource.kt
index 8d8ce0dba..9c58dee0d 100644
--- a/app/src/main/java/com/davemorrissey/labs/subscaleview/ImageSource.kt
+++ b/app/src/main/java/com/davemorrissey/labs/subscaleview/ImageSource.kt
@@ -1,15 +1,8 @@
 package com.davemorrissey.labs.subscaleview
 
-import android.content.Context
 import android.graphics.Bitmap
 import android.graphics.Rect
-import android.net.Uri
-import com.davemorrissey.labs.subscaleview.provider.AssetInputProvider
 import com.davemorrissey.labs.subscaleview.provider.InputProvider
-import com.davemorrissey.labs.subscaleview.provider.OpenStreamProvider
-import com.davemorrissey.labs.subscaleview.provider.ResourceInputProvider
-import com.davemorrissey.labs.subscaleview.provider.UriInputProvider
-import java.io.InputStream
 
 /**
  * Helper class used to set the source and additional attributes from a variety of sources. Supports
@@ -83,38 +76,6 @@ class ImageSource {
     }
 
     companion object {
-        /**
-         * Create an instance from a resource. The correct resource for the device screen resolution will be used.
-         *
-         * @param resId resource ID.
-         * @return an [ImageSource] instance.
-         */
-        @JvmStatic
-        fun resource(context: Context, resId: Int): ImageSource {
-            return ImageSource(ResourceInputProvider(context, resId))
-        }
-
-        /**
-         * Create an instance from an asset name.
-         *
-         * @param assetName asset name.
-         * @return an [ImageSource] instance.
-         */
-        @JvmStatic
-        fun asset(context: Context, assetName: String): ImageSource {
-            return ImageSource(AssetInputProvider(context, assetName))
-        }
-
-        /**
-         * Create an instance from a URI.
-         *
-         * @param uri image URI.
-         * @return an [ImageSource] instance.
-         */
-        fun uri(context: Context, uri: Uri): ImageSource {
-            return ImageSource(UriInputProvider(context, uri))
-        }
-
         /**
          * Create an instance from an input provider.
          *
@@ -125,16 +86,6 @@ class ImageSource {
             return ImageSource(provider)
         }
 
-        /**
-         * Create an instance from an input stream.
-         *
-         * @param stream open input stream.
-         * @return an [ImageSource] instance.
-         */
-        fun inputStream(stream: InputStream): ImageSource {
-            return ImageSource(OpenStreamProvider(stream))
-        }
-
         /**
          * Provide a loaded bitmap for display.
          *
diff --git a/app/src/main/java/com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.kt b/app/src/main/java/com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.kt
index 7e9f44dc3..c35a6d5cd 100644
--- a/app/src/main/java/com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.kt
+++ b/app/src/main/java/com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.kt
@@ -19,12 +19,9 @@ import android.view.MotionEvent
 import android.view.View
 import androidx.annotation.AnyThread
 import androidx.annotation.IntDef
-import com.davemorrissey.labs.subscaleview.ImageSource.Companion.asset
-import com.davemorrissey.labs.subscaleview.ImageSource.Companion.resource
 import com.davemorrissey.labs.subscaleview.decoder.Decoder
 import com.davemorrissey.labs.subscaleview.decoder.ImageDecoder
 import com.davemorrissey.labs.subscaleview.provider.InputProvider
-import com.hippo.ehviewer.R
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
@@ -303,42 +300,6 @@ open class SubsamplingScaleImageView @JvmOverloads constructor(
         setMinimumDpi(160)
         setDoubleTapZoomDpi(160)
         setGestureDetector(context)
-
-        // Handle XML attributes
-        if (attr != null) {
-            val typedAttr = getContext().obtainStyledAttributes(attr, R.styleable.SubsamplingScaleImageView)
-            if (typedAttr.hasValue(R.styleable.SubsamplingScaleImageView_assetName)) {
-                val assetName = typedAttr.getString(R.styleable.SubsamplingScaleImageView_assetName)
-                if (assetName != null && assetName.isNotEmpty()) {
-                    setImage(asset(context, assetName))
-                }
-            }
-            if (typedAttr.hasValue(R.styleable.SubsamplingScaleImageView_src)) {
-                val resId = typedAttr.getResourceId(R.styleable.SubsamplingScaleImageView_src, 0)
-                if (resId > 0) {
-                    setImage(resource(context, resId))
-                }
-            }
-            if (typedAttr.hasValue(R.styleable.SubsamplingScaleImageView_panEnabled)) {
-                setPanEnabled(typedAttr.getBoolean(R.styleable.SubsamplingScaleImageView_panEnabled, true))
-            }
-            if (typedAttr.hasValue(R.styleable.SubsamplingScaleImageView_zoomEnabled)) {
-                isZoomEnabled = typedAttr.getBoolean(R.styleable.SubsamplingScaleImageView_zoomEnabled, true)
-            }
-            if (typedAttr.hasValue(R.styleable.SubsamplingScaleImageView_quickScaleEnabled)) {
-                isQuickScaleEnabled =
-                    typedAttr.getBoolean(R.styleable.SubsamplingScaleImageView_quickScaleEnabled, true)
-            }
-            if (typedAttr.hasValue(R.styleable.SubsamplingScaleImageView_tileBackgroundColor)) {
-                setTileBackgroundColor(
-                    typedAttr.getColor(
-                        R.styleable.SubsamplingScaleImageView_tileBackgroundColor,
-                        Color.argb(0, 0, 0, 0)
-                    )
-                )
-            }
-            typedAttr.recycle()
-        }
         quickScaleThreshold =
             TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 20F, context.resources.displayMetrics)
     }
diff --git a/app/src/main/java/com/davemorrissey/labs/subscaleview/decoder/ImageDecoder.kt b/app/src/main/java/com/davemorrissey/labs/subscaleview/decoder/ImageDecoder.kt
index 8acbc4241..d7d0cd788 100644
--- a/app/src/main/java/com/davemorrissey/labs/subscaleview/decoder/ImageDecoder.kt
+++ b/app/src/main/java/com/davemorrissey/labs/subscaleview/decoder/ImageDecoder.kt
@@ -4,10 +4,8 @@ import android.content.Context
 import android.graphics.Bitmap
 import android.graphics.Point
 import android.graphics.Rect
-import kotlin.Throws
-import com.davemorrissey.labs.subscaleview.provider.InputProvider
 import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
-import java.lang.Exception
+import com.davemorrissey.labs.subscaleview.provider.InputProvider
 
 class ImageDecoder @JvmOverloads constructor(
     private val cropBorders: Boolean,
diff --git a/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/AssetInputProvider.kt b/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/AssetInputProvider.kt
deleted file mode 100644
index eba85fc58..000000000
--- a/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/AssetInputProvider.kt
+++ /dev/null
@@ -1,11 +0,0 @@
-package com.davemorrissey.labs.subscaleview.provider
-
-import android.content.Context
-import java.io.IOException
-
-class AssetInputProvider(context: Context, val assetName: String) : InputProvider {
-    private val assets = context.assets
-
-    @Throws(IOException::class)
-    override fun openStream() = assets.open(assetName)
-}
diff --git a/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/InputProvider.kt b/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/InputProvider.kt
index 95359e291..89ec1c24e 100644
--- a/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/InputProvider.kt
+++ b/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/InputProvider.kt
@@ -1,10 +1,3 @@
 package com.davemorrissey.labs.subscaleview.provider
 
-import java.io.IOException
-import java.io.InputStream
-import kotlin.Throws
-
-interface InputProvider {
-    @Throws(IOException::class)
-    fun openStream(): InputStream?
-}
+interface InputProvider
diff --git a/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/OpenStreamProvider.kt b/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/OpenStreamProvider.kt
deleted file mode 100644
index 0ee6a5c97..000000000
--- a/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/OpenStreamProvider.kt
+++ /dev/null
@@ -1,16 +0,0 @@
-package com.davemorrissey.labs.subscaleview.provider
-
-import java.io.IOException
-import java.io.InputStream
-import kotlin.Throws
-
-/**
- * Provider from an already open input stream.
- *
- *
- * Please keep in mind this provider is not reusable.
- */
-class OpenStreamProvider(private val stream: InputStream) : InputProvider {
-    @Throws(IOException::class)
-    override fun openStream() = stream
-}
diff --git a/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/ResourceInputProvider.kt b/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/ResourceInputProvider.kt
deleted file mode 100644
index 6e7197ed7..000000000
--- a/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/ResourceInputProvider.kt
+++ /dev/null
@@ -1,11 +0,0 @@
-package com.davemorrissey.labs.subscaleview.provider
-
-import android.content.Context
-import java.io.IOException
-
-class ResourceInputProvider(context: Context, val resource: Int) : InputProvider {
-    private val resources = context.resources
-
-    @Throws(IOException::class)
-    override fun openStream() = resources.openRawResource(resource)
-}
diff --git a/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/UriInputProvider.kt b/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/UriInputProvider.kt
deleted file mode 100644
index f3745ce14..000000000
--- a/app/src/main/java/com/davemorrissey/labs/subscaleview/provider/UriInputProvider.kt
+++ /dev/null
@@ -1,13 +0,0 @@
-package com.davemorrissey.labs.subscaleview.provider
-
-import android.content.Context
-import android.net.Uri
-import java.io.IOException
-import kotlin.Throws
-
-class UriInputProvider(context: Context, val uri: Uri) : InputProvider {
-    private val resolver = context.contentResolver
-
-    @Throws(IOException::class)
-    override fun openStream() = resolver.openInputStream(uri)
-}
diff --git a/app/src/main/res/values/arrays.xml b/app/src/main/res/values/arrays.xml
index 827ee5fca..bc1dc61af 100644
--- a/app/src/main/res/values/arrays.xml
+++ b/app/src/main/res/values/arrays.xml
@@ -250,15 +250,6 @@
         <item>@string/download_state_failed</item>
     </string-array>
 
-    <declare-styleable name="SubsamplingScaleImageView">
-        <attr name="src" format="reference" />
-        <attr name="assetName" format="string" />
-        <attr name="panEnabled" format="boolean" />
-        <attr name="zoomEnabled" format="boolean" />
-        <attr name="quickScaleEnabled" format="boolean" />
-        <attr name="tileBackgroundColor" format="color" />
-    </declare-styleable>
-
     <string-array name="viewers_selector">
         <item>@string/label_default</item>
         <item>@string/left_to_right_viewer</item>