Can clear local database from the application.

app/src/main/java/org/communiquons/android/comunic/client/data/helpers/BaseHelper.java

@@ -0,0 +1,38 @@
+package org.communiquons.android.comunic.client.data.helpers;
+
+import android.content.Context;
+
+/**
+ * Base helper
+ *
+ * This helper is intended to be inherited by all the other helpers
+ *
+ * @author Pierre HUBERT
+ * Created by pierre on 4/28/18.
+ */
+
+class BaseHelper {
+
+    /**
+     * The context of the application
+     */
+    private Context mContext;
+
+    /**
+     * Package-private constructor
+     *
+     * @param context The context of the application
+     */
+    BaseHelper(Context context){
+        this.mContext = context.getApplicationContext();
+    }
+
+    /**
+     * Get the context of the application
+     *
+     * @return The context
+     */
+    public Context getContext() {
+        return mContext;
+    }
+}

app/src/main/java/org/communiquons/android/comunic/client/data/helpers/DatabaseHelper.java

@@ -127,9 +127,9 @@ public class DatabaseHelper extends SQLiteOpenHelper {
      *
      * @param db Database object
      */
-    public void init_db(SQLiteDatabase db){
+    void init_db(SQLiteDatabase db){
 
-        //Create user informations table
+        //Create user information table
         db.execSQL(SQL_CREATE_USERS_INFOS_TABLE);
 
         //Create friends list table
@@ -147,8 +147,8 @@ public class DatabaseHelper extends SQLiteOpenHelper {
      *
      * @param db The database
      */
-    public void clear_db(SQLiteDatabase db){
+    void clear_db(SQLiteDatabase db){
-        //Delete users informations table
+        //Delete users information table
         db.execSQL(SQL_DELETE_USERS_INFOS_TABLE);
 
         //Delete friends list table

app/src/main/java/org/communiquons/android/comunic/client/data/helpers/DebugHelper.java

@@ -0,0 +1,46 @@
+package org.communiquons.android.comunic.client.data.helpers;
+
+import android.content.Context;
+import android.database.SQLException;
+import android.database.sqlite.SQLiteDatabase;
+
+/**
+ * Debug helper
+ *
+ * This helpers handles all the debug operations made by the user other the application
+ *
+ * @author Pierre HUBERT
+ * Created by pierre on 4/28/18.
+ */
+
+public class DebugHelper extends BaseHelper {
+
+    /**
+     * Public constructor
+     *
+     * @param context The context of the application
+     */
+    public DebugHelper(Context context) {
+        super(context);
+    }
+
+    /**
+     * Clear the database of the application, setting it default values
+     *
+     * @return TRUE for a success / FALSE else
+     */
+    public boolean clearLocalDatabase(){
+
+        try {
+            DatabaseHelper dbHelper = DatabaseHelper.getInstance(getContext());
+            SQLiteDatabase db = dbHelper.getWritableDatabase();
+            dbHelper.clear_db(db);
+            dbHelper.init_db(db);
+        } catch (SQLException e){
+            e.printStackTrace();
+            return false;
+        }
+
+        return true;
+    }
+}

app/src/main/java/org/communiquons/android/comunic/client/ui/activities/MainActivity.java

@@ -21,6 +21,7 @@ import org.communiquons.android.comunic.client.R;
 import org.communiquons.android.comunic.client.crashreporter.CrashReporter;
 import org.communiquons.android.comunic.client.data.helpers.APIRequestHelper;
 import org.communiquons.android.comunic.client.data.helpers.AccountHelper;
+import org.communiquons.android.comunic.client.data.helpers.DebugHelper;
 import org.communiquons.android.comunic.client.data.utils.AccountUtils;
 import org.communiquons.android.comunic.client.data.helpers.DatabaseHelper;
 import org.communiquons.android.comunic.client.data.helpers.ConversationsListHelper;
@@ -200,6 +201,12 @@ public class MainActivity extends AppCompatActivity implements openConversationL
             return true;
         }
 
+        //Check if user wants to clear database
+        if(id == R.id.action_clear_local_db){
+            clearLocalDatabase();
+            return true;
+        }
+
         return super.onOptionsItemSelected(item);
 
     }
@@ -495,4 +502,16 @@ public class MainActivity extends AppCompatActivity implements openConversationL
         transaction.replace(R.id.main_fragment, singlePostFragment);
         transaction.commit();
     }
+
+    /**
+     * Clear the cache database of the application
+     */
+    private void clearLocalDatabase() {
+
+        if(!new DebugHelper(this).clearLocalDatabase())
+            Toast.makeText(this, R.string.err_clear_local_db, Toast.LENGTH_SHORT).show();
+        else
+            Toast.makeText(this, R.string.success_clear_local_db, Toast.LENGTH_SHORT).show();
+    }
+
 }

app/src/main/res/menu/debug_menu.xml

@@ -2,7 +2,7 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
 
     <item
-        android:id="@+id/clear_local_db"
+        android:id="@+id/action_clear_local_db"
         android:title="@string/menu_clear_local_db"/>
 
 </menu>

app/src/main/res/values/strings.xml

@@ -179,7 +179,9 @@
     <string name="notice_no_friend">You do not have any friend yet.</string>
     <string name="err_get_older_conversation_messages">An error occurred while trying to get older messages for the conversation!</string>
     <string name="preference_debug_mode_title">Enable debug mode</string>
-    <string name="preference_debug_mode_summary">Enable this option to get access to development / debug features.</string>
+    <string name="preference_debug_mode_summary">Enable this option to get access to development / debug features. (Need application restart to make effect)</string>
     <string name="menu_debug_title">Debug</string>
     <string name="menu_clear_local_db">Clear local database</string>
+    <string name="success_clear_local_db">The local database has been successfully cleared! You may need to restart the application to make the changes being fully applied.</string>
+    <string name="err_clear_local_db">An error occurred while trying to clear local database!</string>
 </resources>