Added backup of app preferences

akhilkedia · Aug 8, 2017 · fd53eab · fd53eab
1 parent ea1b684
commit fd53eab
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Showing 5 changed files with 79 additions and 8 deletions.
diff --git a/app/build.gradle b/app/build.gradle
@@ -39,8 +39,8 @@ android {
         minSdkVersion 14
         //noinspection OldTargetApi
         targetSdkVersion 23
-        versionCode 7
-        versionName "1.3.0"
+        versionCode 8
+        versionName "1.4.0"
     }
     buildTypes {
         release {

diff --git a/app/src/main/java/akhil/alltrans/AppListFragment.java b/app/src/main/java/akhil/alltrans/AppListFragment.java
@@ -78,6 +78,7 @@ public void onStart() {
         super.onStart();
         context = this.getActivity();
         //noinspection deprecation,deprecation
+        BackupSharedPreferences.backupSharedPreferences(this.getActivity());
         settings = this.getActivity().getSharedPreferences("AllTransPref", MODE_WORLD_READABLE);
         mFirebaseAnalytics = FirebaseAnalytics.getInstance(context);
 

diff --git a/app/src/main/java/akhil/alltrans/BackupSharedPreferences.java b/app/src/main/java/akhil/alltrans/BackupSharedPreferences.java
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2017 Akhil Kedia
+ * This file is part of AllTrans.
+ *
+ * AllTrans is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * AllTrans is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with AllTrans. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package akhil.alltrans;
+
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.os.Environment;
+import android.widget.Toast;
+
+import java.io.DataOutputStream;
+
+
+public class BackupSharedPreferences {
+    public static void backupSharedPreferences(Context context) {
+        @SuppressLint("SdCardPath")
+        String sharedPath = "/data/data/akhil.alltrans/shared_prefs/";
+        String externalPath = Environment.getExternalStorageDirectory().getAbsolutePath();
+        if (!isExternalStorageWritable()) {
+            return;
+        }
+
+        try {
+            Process su = Runtime.getRuntime().exec("su");
+            DataOutputStream outputStream = new DataOutputStream(su.getOutputStream());
+            utils.debugLog("cp -R" + " " + sharedPath + " " + externalPath + "/AllTransBackup/" + "\n");
+            outputStream.writeBytes("cp -R" + " " + sharedPath + " " + externalPath + "/AllTransBackup/" + "\n");
+            outputStream.writeBytes("exit\n");
+            outputStream.flush();
+            outputStream.close();
+            su.waitFor();
+
+            CharSequence text = context.getString(R.string.backup_pref_success);
+            int duration = Toast.LENGTH_SHORT;
+            Toast toast = Toast.makeText(context, text, duration);
+            toast.show();
+        } catch (Exception e) {
+            CharSequence text = context.getString(R.string.backup_pref_error);
+            int duration = Toast.LENGTH_SHORT;
+            Toast toast = Toast.makeText(context, text, duration);
+            toast.show();
+        }
+    }
+
+    /* Checks if external storage is available for read and write */
+    private static boolean isExternalStorageWritable() {
+        String state = Environment.getExternalStorageState();
+        return Environment.MEDIA_MOUNTED.equals(state);
+    }
+}
diff --git a/app/src/main/java/akhil/alltrans/LocalPreferenceFragment.java b/app/src/main/java/akhil/alltrans/LocalPreferenceFragment.java
@@ -103,7 +103,14 @@ public boolean onPreferenceClick(Preference preference) {
 
                     outputStream.writeBytes("exit\n");
                     outputStream.flush();
+                    outputStream.close();
                     su.waitFor();
+
+                    Context context = preference.getContext();
+                    CharSequence text = getString(R.string.clear_cache_success);
+                    int duration = Toast.LENGTH_SHORT;
+                    Toast toast = Toast.makeText(context, text, duration);
+                    toast.show();
                 } catch (Exception e) {
                     Context context = preference.getContext();
                     CharSequence text = getString(R.string.clear_cache_error);
@@ -112,12 +119,6 @@ public boolean onPreferenceClick(Preference preference) {
                     toast.show();
                 }
 
-                Context context = preference.getContext();
-                CharSequence text = getString(R.string.clear_cache_success);
-                int duration = Toast.LENGTH_SHORT;
-                Toast toast = Toast.makeText(context, text, duration);
-                toast.show();
-
                 return false;
             }
         });

diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
@@ -25,6 +25,8 @@
     <string name="loading">"Loading List of Applications - Please Wait"</string>
     <string name="clear_cache_error">"Some Error. Could not clear translation cache!"</string>
     <string name="clear_cache_success">"Translate Cache for this app has been erased!"</string>
+    <string name="backup_pref_error">"Some Error. Could not backup preferences! Did you grant SuperUser Access?"</string>
+    <string name="backup_pref_success">"Preferences have been backed up to External Storage!"</string>
     <string name="wut_why_null">"Could not load the Per-app preference page. Close and re-open application again."</string>
 
     <string name="app_icon">"App Icon"</string>