diff --git a/app/build.gradle b/app/build.gradle
index 9d28948..a9cedef 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -4,12 +4,12 @@ plugins {
 }
 
 android {
-    compileSdk 32
+    compileSdk 33
 
     defaultConfig {
-        applicationId "com.xypower.camera2raw"
-        minSdk 25
-        targetSdk 32
+        applicationId "com.xypower.mppreview"
+        minSdk 28
+        targetSdk 30
         versionCode 1
         versionName "1.0"
 
diff --git a/app/src/main/java/com/xypower/mppreview/Camera2RawFragment.java b/app/src/main/java/com/xypower/mppreview/Camera2RawFragment.java
index 90ffa34..b715acd 100644
--- a/app/src/main/java/com/xypower/mppreview/Camera2RawFragment.java
+++ b/app/src/main/java/com/xypower/mppreview/Camera2RawFragment.java
@@ -59,8 +59,6 @@ import android.widget.Button;
 import android.widget.EditText;
 import android.widget.Toast;
 
-import org.opencv.android.OpenCVLoader;
-
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
diff --git a/app/src/main/java/com/xypower/mppreview/RawToJpgConverter.java b/app/src/main/java/com/xypower/mppreview/RawToJpgConverter.java
index 5fdb1c4..3e512cf 100644
--- a/app/src/main/java/com/xypower/mppreview/RawToJpgConverter.java
+++ b/app/src/main/java/com/xypower/mppreview/RawToJpgConverter.java
@@ -2,8 +2,10 @@ package com.xypower.mppreview;
 
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
+import android.graphics.ImageDecoder;
 
 import java.io.ByteArrayOutputStream;
+import java.io.Closeable;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
@@ -14,6 +16,15 @@ import java.util.List;
 
 public class RawToJpgConverter {
 
+    public static void closeFriendly(Closeable closeable) {
+        if (null != closeable) {
+            try {
+                closeable.close();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
 
     public static List<String> listFiles(File directory) {
         ArrayList list = new ArrayList();
@@ -43,7 +54,7 @@ public class RawToJpgConverter {
         } catch (Exception ex) {
             ex.printStackTrace();
         } finally {
-            closeOutput(output);
+            closeFriendly(output);
             if (bmp != null) {
                 bmp.recycle();
             }