Force Mounting 2

If you have root then most likely you have write access to secondary storage. If not then use the app-specific folder. You may create the folder via built-in file manager > Android/data/net.wagic.app/files/Wagic/Res

projects/mtg/Android/src/net/wagic/utils/StorageOptions.java

@@ -61,7 +61,7 @@ public class StorageOptions
                 if (line.startsWith("/"))
                 {
                     String[] lineElements = line.split("\\s+");
-                    if ("vfat".equals(lineElements[2]) || "fuse".equals(lineElements[2])) 
+                    if ("vfat".equals(lineElements[2]) || "fuse".equals(lineElements[2]) || "sdcardfs".equals(lineElements[2])) 
                     {
                         File mountPoint = new File(lineElements[1]);
                         if (!lineElements[1].equals(defaultMountPoint))
@@ -201,13 +201,43 @@ public class StorageOptions
                 mMounts.remove(i--);
         }
         
-        if (t == 0 && Build.VERSION.SDK_INT >= 19)
-        {//If none is found and build version is kitkat or higher 
-            File root = new File("/storage/sdcard0");
-            if (root.exists() && root.isDirectory() && root.canWrite())
-                mMounts.add("/storage/sdcard0");
-            if (isExternalStorageAvailable() && !isExternalStorageReadOnly())
-                mMounts.add("/storage/sdcard1");
+        if (t == 0 && Build.VERSION.SDK_INT >= 16)
+        {//if none is found lets force it for Jellybean and above...
+            if (System.getenv("EXTERNAL_STORAGE") != null)
+            {
+                File root = new File(System.getenv("EXTERNAL_STORAGE"));
+                if (root.exists() && root.isDirectory() && root.canWrite())
+                {
+                    if(!isRooted())
+                    {
+                        File folder = new File(System.getenv("EXTERNAL_STORAGE")+"/Android/data/net.wagic.app/files");
+                        folder.mkdirs();
+                        mMounts.add(folder.toString());
+                    }
+                    else
+                    {
+                        mMounts.add(System.getenv("EXTERNAL_STORAGE"));
+                    }
+                }
+            }
+            
+            if (System.getenv("SECONDARY_STORAGE") != null)
+            {
+                File root = new File(System.getenv("SECONDARY_STORAGE"));
+                if (root.exists() && root.isDirectory() && root.canWrite())
+                {
+                    if(!isRooted())
+                    {
+                        File folder = new File(System.getenv("SECONDARY_STORAGE")+"/Android/data/net.wagic.app/files");
+                        folder.mkdirs();
+                        mMounts.add(folder.toString());
+                    }
+                    else
+                    {
+                        mMounts.add(System.getenv("SECONDARY_STORAGE"));
+                    }
+                }
+            }
         }
     }
 
@@ -224,6 +254,8 @@ public class StorageOptions
         { // TODO: /mnt/sdcard is assumed to always mean internal storage. Use this comparison until there is a better way to do this
             if ("/mnt/sdcard".equalsIgnoreCase(path) || "/storage/sdcard0".equalsIgnoreCase(path))
                 mLabels.add("Internal SD " + "[" + path + "]");
+            else if (path.contains("emulated"))
+                mLabels.add("Emulated SD " + " [" + path + "]");
             else
                 mLabels.add("External SD " + " [" + path + "]");
         }
@@ -256,4 +288,74 @@ public class StorageOptions
         }
         return false;
     }
+    
+    /**
+    * Checks if the device is rooted.
+    *
+    * @return <code>true</code> if the device is rooted, <code>false</code> otherwise.
+    */
+    public static boolean isRooted() {
+
+    // get from build info
+    String buildTags = android.os.Build.TAGS;
+    if (buildTags != null && buildTags.contains("test-keys")) {
+      return true;
+    }
+
+    // check if /system/app/Superuser.apk is present
+    try {
+      File file = new File("/system/app/Superuser.apk");
+      if (file.exists()) {
+        return true;
+      }
+    } 
+    catch (Exception e1) {
+      // ignore
+    }
+    try {
+      File file = new File("/system/app/Superuser/Superuser.apk");
+      if (file.exists()) {
+        return true;
+      }
+    } 
+    catch (Exception e1) {
+      // ignore
+    }
+    //SuperSU
+    try {
+      File file = new File("/system/app/SuperSU.apk");
+      if (file.exists()) {
+        return true;
+      }
+    } 
+    catch (Exception e1) {
+      // ignore
+    }
+    try {
+      File file = new File("/system/app/SuperSU/SuperSU.apk");
+      if (file.exists()) {
+        return true;
+      }
+    } 
+    catch (Exception e1) {
+      // ignore
+    }
+    // try executing commands
+    return canExecuteCommand("/system/xbin/which su")
+        || canExecuteCommand("/system/bin/which su") || canExecuteCommand("which su");
+    }
+
+    // executes a command on the system
+    private static boolean canExecuteCommand(String command) {
+    boolean executedSuccesfully;
+    try {
+      Runtime.getRuntime().exec(command);
+      executedSuccesfully = true;
+    } 
+    catch (Exception e) {
+      executedSuccesfully = false;
+    }
+
+    return executedSuccesfully;
+    }
 }