From 260f91e291f29f8bf8ad637b19a6d7c5f0deeb2b Mon Sep 17 00:00:00 2001
From: "A.Akira" <developer.a.akira@gmail.com>
Date: Wed, 25 Nov 2015 17:09:05 +0900
Subject: [PATCH] Use WeakReference.

---
 .../glide/transformations/BlurTransformation.java     | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/transformations/src/main/java/jp/wasabeef/glide/transformations/BlurTransformation.java b/transformations/src/main/java/jp/wasabeef/glide/transformations/BlurTransformation.java
index 053d9b8..b5dff4f 100644
--- a/transformations/src/main/java/jp/wasabeef/glide/transformations/BlurTransformation.java
+++ b/transformations/src/main/java/jp/wasabeef/glide/transformations/BlurTransformation.java
@@ -29,13 +29,14 @@ import com.bumptech.glide.load.Transformation;
 import com.bumptech.glide.load.engine.Resource;
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
 import com.bumptech.glide.load.resource.bitmap.BitmapResource;
+import java.lang.ref.WeakReference;
 
 public class BlurTransformation implements Transformation<Bitmap> {
 
   private static int MAX_RADIUS = 25;
   private static int DEFAULT_DOWN_SAMPLING = 1;
 
-  private Context mContext;
+  private WeakReference<Context> mContext;
   private BitmapPool mBitmapPool;
 
   private int mRadius;
@@ -58,14 +59,14 @@ public class BlurTransformation implements Transformation<Bitmap> {
   }
 
   public BlurTransformation(Context context, BitmapPool pool, int radius, int sampling) {
-    mContext = context;
+    mContext = new WeakReference<>(context);
     mBitmapPool = pool;
     mRadius = radius;
     mSampling = sampling;
   }
 
   public BlurTransformation(Context context, int radius, int sampling) {
-    mContext = context;
+    mContext = new WeakReference<>(context);
     mBitmapPool = Glide.get(context).getBitmapPool();
     mRadius = radius;
     mSampling = sampling;
@@ -91,7 +92,7 @@ public class BlurTransformation implements Transformation<Bitmap> {
     paint.setFlags(Paint.FILTER_BITMAP_FLAG);
     canvas.drawBitmap(source, 0, 0, paint);
 
-    RenderScript rs = RenderScript.create(mContext);
+    RenderScript rs = RenderScript.create(mContext.get());
     Allocation input = Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_NONE,
         Allocation.USAGE_SCRIPT);
     Allocation output = Allocation.createTyped(rs, input.getType());
@@ -102,6 +103,8 @@ public class BlurTransformation implements Transformation<Bitmap> {
     blur.forEach(output);
     output.copyTo(bitmap);
 
+    source.recycle();
+    resource.recycle();
     rs.destroy();
 
     return BitmapResource.obtain(bitmap, mBitmapPool);