internal persistentDataPath with WRITE_EXTERNAL_STORAGE permission

[Calvin2274]

Hi,

I having problem about using persistentDataPath on Android.

I know that persistentDataPath will return different data path base on “write access” setting.
same of permission __WRITE_______EXTERNAL_______STORAGE in AndroidManifest.xml

Internal Only : data/data/xxxx/files/ ( Player cannot get file inside this path without root )

External ( SD Card ) : Android/data/com.xxx.xx/files/ ( Player can get file inside this path without root )

However, I am going to save game data into Internal persistentDataPath, but i have WRITE_ EXTERNAL_STORAGE permission because i want to use expansion file( .obb ), but now my game data saved at SD Card and player can get file and edit.

So my question is, how can i save data into internal persistentDataPath with __WRITE_______EXTERNAL_______STORAGE permission ?

=== UPDATE ===

I am trying to hard code internal persistentDataPath and move file from public persistentDataPath, it was success, i can move it and also read and delete _AT THE FIRST TIME, but when i quit app and launch again, i got a _UnauthorizedAccessException and blocked at Delete File action.

[Calvin2274]

Finally, i found that UnauthorizedAccessException caused by System.IO.File.Move() ,

I took many test, to read, to write, to delete, i found that i can read and write data directly before called Move(),

so I used ReadAllBytes, WriteAllBytes and then Delete() the old file instead

problem solved.

[Clas]

You can get your Android apps internal path directly from Unity without a plugin, even with permission WRITE_EXTERNAL_STORAGE. Similar code can be used to get any other path.

I spent 2 days on this :P. First I made my own Java plugin, but as I do not like to extend my current Activity or Application I ran into problems. Finally I pieced together how to do it directly from Unity with the following code:

string path = "";
#if UNITY_ANDROID && !UNITY_EDITOR
try {
         IntPtr obj_context = AndroidJNI.FindClass("android/content/ContextWrapper");
         IntPtr method_getFilesDir = AndroidJNIHelper.GetMethodID(obj_context, "getFilesDir", "()Ljava/io/File;");

         using (AndroidJavaClass cls_UnityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer")) {
            using (AndroidJavaObject obj_Activity = cls_UnityPlayer.GetStatic<AndroidJavaObject>("currentActivity")) {
               IntPtr file = AndroidJNI.CallObjectMethod(obj_Activity.GetRawObject(), method_getFilesDir, new jvalue[0]);
               IntPtr obj_file = AndroidJNI.FindClass("java/io/File");
               IntPtr method_getAbsolutePath = AndroidJNIHelper.GetMethodID(obj_file, "getAbsolutePath", "()Ljava/lang/String;");   
                                
               path = AndroidJNI.CallStringMethod(file, method_getAbsolutePath, new jvalue[0]);                    

               if(path != null) {
                  Debug.Log("Got internal path: " + path);
               }
               else {
                  Debug.Log("Using fallback path");
                  path = "/data/data/*** YOUR PACKAGE NAME ***/files";
               }
            }
         }
      }
      catch(Exception e) {
         Debug.Log(e.ToString());
      }
#else
      path = Application.persistentDataPath;
#endif

I hope it will help some devs without Java knowledge (like myself :)) to save some time and headache.

[Yury-Habets]

Can you save your data in PlayerPrefs Unity - Scripting API: PlayerPrefs ? It cannot be modified by the user without root access. For storing several string or number values that would be pretty convenient.

Otherwise, I can’t remember a simple way of having WRITE_EXTERNAL_STORAGE and having your data path in the internal storage.

[infosekr]

You need to write a native android plugin to return the internal storage path, and not use the Application.persistantDataPath. Look at the code in this example: 日本入室强伦姧BD在线观看,日韩中文人妻无码不卡,卧室征服朋友人妻,人妻办公室被强奷