diff --git a/apk b/apk
new file mode 120000
index 0000000..ae97fdf
--- /dev/null
+++ b/apk
@@ -0,0 +1 @@
+app/build/outputs/apk/
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index 0fb6b27..818d1a6 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -11,10 +11,19 @@ android {
         versionCode 1
         versionName "1.0"
     }
+    signingConfigs {
+        release {
+            storeFile file(RELEASE_STORE_FILE)
+            storePassword RELEASE_STORE_PASSWORD
+            keyAlias RELEASE_KEY_ALIAS
+            keyPassword RELEASE_KEY_PASSWORD
+        }
+    }
     buildTypes {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            signingConfig signingConfigs.release
         }
     }
 }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 592fa02..9ecafdf 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -14,8 +14,7 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme"
-        tools:replace="android:theme">
+        android:theme="@style/AppTheme">
         <activity
             android:name=".activities.SettingsActivity"
             android:label="@string/app_name" />
diff --git a/app/src/main/java/com/github/axet/audiorecorder/widgets/OpenFileDialog.java b/app/src/main/java/com/github/axet/audiorecorder/widgets/OpenFileDialog.java
index 3099ad6..f67f2c4 100644
--- a/app/src/main/java/com/github/axet/audiorecorder/widgets/OpenFileDialog.java
+++ b/app/src/main/java/com/github/axet/audiorecorder/widgets/OpenFileDialog.java
@@ -8,6 +8,7 @@ import android.graphics.Point;
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
 import android.os.Environment;
+import android.preference.EditTextPreference;
 import android.util.DisplayMetrics;
 import android.util.TypedValue;
 import android.view.Display;
@@ -263,6 +264,7 @@ public class OpenFileDialog extends AlertDialog.Builder {
 
             @Override
             public void onClick(View view) {
+                EditTextPreference edit = new EditTextPreference(getContext());
                 AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
                 final EditText input = new EditText(getContext());
                 builder.setView(input);
@@ -321,19 +323,12 @@ public class OpenFileDialog extends AlertDialog.Builder {
     }
 
     private void RebuildFiles() {
-        try {
-            selectedIndex = -1;
-            adapter.clear();
-            adapter.addAll(getFiles(currentPath));
-            adapter.sort(new SortFiles());
-            adapter.notifyDataSetChanged();
-            changeTitle();
-        } catch (NullPointerException e) {
-            String message = getContext().getResources().getString(android.R.string.unknownName);
-            if (!accessDeniedMessage.equals(""))
-                message = accessDeniedMessage;
-            Toast.makeText(getContext(), message, Toast.LENGTH_SHORT).show();
-        }
+        selectedIndex = -1;
+        adapter.clear();
+        adapter.addAll(getFiles(currentPath));
+        adapter.sort(new SortFiles());
+        adapter.notifyDataSetChanged();
+        changeTitle();
     }
 
     private ListView createListView(Context context) {