diff --git a/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.java b/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.java
index e2001cb39..74fa9d083 100644
--- a/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.java
+++ b/app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.java
@@ -260,23 +260,23 @@ public final class SpiderDen {
             e.printStackTrace();
         }
         return new OutputStreamPipe() {
-            @Override
-            public void obtain() {
-            }
-
+            private OutputStream os = null;
             @Override
             public void release() {
+                editor.commit();
             }
 
             @NonNull
             @Override
             public OutputStream open() throws IOException {
-                return new FileOutputStream(editor.getData().toFile());
+                if (os != null) IOUtils.closeQuietly(os);
+                os = new FileOutputStream(editor.getData().toFile());
+                return os;
             }
 
             @Override
             public void close() {
-                editor.commit();
+                if (os != null) IOUtils.closeQuietly(os);
             }
         };
     }
@@ -326,25 +326,24 @@ public final class SpiderDen {
         var snapshot = sCache.get(key);
         if (snapshot == null) return null;
         return new InputStreamPipe() {
-            @Override
-            public void obtain() {
-
-            }
+            private InputStream is = null;
 
             @Override
             public void release() {
-
+                snapshot.close();
             }
 
             @NonNull
             @Override
             public InputStream open() throws IOException {
-                return new FileInputStream(snapshot.getData().toFile());
+                if (is != null) IOUtils.closeQuietly(is);
+                is = new FileInputStream(snapshot.getData().toFile());
+                return is;
             }
 
             @Override
             public void close() {
-                snapshot.close();
+                if (is != null) IOUtils.closeQuietly(is);
             }
         };
     }
diff --git a/app/src/main/java/com/hippo/ehviewer/spider/SpiderQueen.java b/app/src/main/java/com/hippo/ehviewer/spider/SpiderQueen.java
index 9b228d954..6381f9701 100644
--- a/app/src/main/java/com/hippo/ehviewer/spider/SpiderQueen.java
+++ b/app/src/main/java/com/hippo/ehviewer/spider/SpiderQueen.java
@@ -584,7 +584,6 @@ public final class SpiderQueen implements Runnable {
         OutputStream os = null;
         try {
             os = file.openOutputStream();
-            pipe.obtain();
             IOUtils.copy(pipe.open(), os);
             return true;
         } catch (IOException e) {
@@ -610,8 +609,6 @@ public final class SpiderQueen implements Runnable {
 
         OutputStream os = null;
         try {
-            pipe.obtain();
-
             // Get dst file
             BitmapFactory.Options options = new BitmapFactory.Options();
             options.inJustDecodeBounds = true;
@@ -650,8 +647,6 @@ public final class SpiderQueen implements Runnable {
         }
 
         try {
-            pipe.obtain();
-
             // Get dst file
             BitmapFactory.Options options = new BitmapFactory.Options();
             options.inJustDecodeBounds = true;
@@ -1288,7 +1283,6 @@ public final class SpiderQueen implements Runnable {
 
                         long contentLength = responseBody.contentLength();
                         is = responseBody.byteStream();
-                        osPipe.obtain();
                         OutputStream os = osPipe.open();
 
                         final byte[] data = new byte[1024 * 4];
@@ -1340,7 +1334,6 @@ public final class SpiderQueen implements Runnable {
                         }
 
                         // Check plain txt
-                        isPipe.obtain();
                         InputStream inputStream = new BufferedInputStream(isPipe.open());
                         boolean isPlainTxt = true;
                         int j = 0;
@@ -1644,7 +1637,6 @@ public final class SpiderQueen implements Runnable {
                 String error = null;
                 InputStream is;
 
-                pipe.obtain();
                 try {
                     is = pipe.open();
                 } catch (IOException e) {
diff --git a/app/src/main/java/com/hippo/io/UniFileInputStreamPipe.java b/app/src/main/java/com/hippo/io/UniFileInputStreamPipe.java
index fa3bbc27f..5669d92d4 100644
--- a/app/src/main/java/com/hippo/io/UniFileInputStreamPipe.java
+++ b/app/src/main/java/com/hippo/io/UniFileInputStreamPipe.java
@@ -34,11 +34,6 @@ public class UniFileInputStreamPipe implements InputStreamPipe {
         mFile = file;
     }
 
-    @Override
-    public void obtain() {
-        // Empty
-    }
-
     @Override
     public void release() {
         // Empty
diff --git a/app/src/main/java/com/hippo/io/UniFileOutputStreamPipe.java b/app/src/main/java/com/hippo/io/UniFileOutputStreamPipe.java
index 1642cb9c4..3dc2b27f1 100644
--- a/app/src/main/java/com/hippo/io/UniFileOutputStreamPipe.java
+++ b/app/src/main/java/com/hippo/io/UniFileOutputStreamPipe.java
@@ -34,11 +34,6 @@ public class UniFileOutputStreamPipe implements OutputStreamPipe {
         mUniFile = uniFile;
     }
 
-    @Override
-    public void obtain() {
-        // Empty
-    }
-
     @Override
     public void release() {
         // Empty
diff --git a/app/src/main/java/com/hippo/streampipe/InputStreamPipe.java b/app/src/main/java/com/hippo/streampipe/InputStreamPipe.java
index c8fe14e01..f93bfd11e 100644
--- a/app/src/main/java/com/hippo/streampipe/InputStreamPipe.java
+++ b/app/src/main/java/com/hippo/streampipe/InputStreamPipe.java
@@ -21,32 +21,12 @@ import androidx.annotation.NonNull;
 import java.io.IOException;
 import java.io.InputStream;
 
-/**
- * A pipe to open {@code InputStream}
- */
 public interface InputStreamPipe {
 
-    /**
-     * Obtain the {@code InputStreamPipe}.
-     * Call it before opening {@code InputStream}.
-     */
-    void obtain();
-
-    /**
-     * Release the {@code InputStreamPipe}.
-     */
     void release();
 
-    /**
-     * Open {@code InputStream}
-     *
-     * @return the {@code InputStream}
-     */
     @NonNull
     InputStream open() throws IOException;
 
-    /**
-     * Close the {@code InputStream} opened before.
-     */
     void close();
 }
diff --git a/app/src/main/java/com/hippo/streampipe/OutputStreamPipe.java b/app/src/main/java/com/hippo/streampipe/OutputStreamPipe.java
index 54f03d739..5dbbb6bac 100644
--- a/app/src/main/java/com/hippo/streampipe/OutputStreamPipe.java
+++ b/app/src/main/java/com/hippo/streampipe/OutputStreamPipe.java
@@ -21,32 +21,12 @@ import androidx.annotation.NonNull;
 import java.io.IOException;
 import java.io.OutputStream;
 
-/**
- * A pipe to open {@code OutputStream}
- */
 public interface OutputStreamPipe {
 
-    /**
-     * Obtain the {@code OutputStreamPipe}.
-     * Call it before opening {@code OutputStream}.
-     */
-    void obtain();
-
-    /**
-     * Release the {@code OutputStreamPipe}.
-     */
     void release();
 
-    /**
-     * Open {@code OutputStream}
-     *
-     * @return the {@code OutputStream}
-     */
     @NonNull
     OutputStream open() throws IOException;
 
-    /**
-     * Close the {@code OutputStream} opened before.
-     */
     void close();
 }
diff --git a/app/src/main/java/com/hippo/util/BitmapUtils.java b/app/src/main/java/com/hippo/util/BitmapUtils.java
index 5992e85ef..510eaa967 100644
--- a/app/src/main/java/com/hippo/util/BitmapUtils.java
+++ b/app/src/main/java/com/hippo/util/BitmapUtils.java
@@ -50,8 +50,6 @@ public final class BitmapUtils {
     public static Bitmap decodeStream(@NonNull InputStreamPipe isp, int maxWidth, int maxHeight,
                                       int pixels, boolean checkMemory, boolean justCalc, int[] sampleSize) {
         try {
-            isp.obtain();
-
             BitmapFactory.Options options = new BitmapFactory.Options();
             options.inJustDecodeBounds = true;
             BitmapFactory.decodeStream(isp.open(), null, options);