Reading images from android device gallery

SOLVED[check post below]​

Hi community,

Im looking for help overhere, currently im working on puzzle game. And right now im working on feature that allow's user to load image from gallery and then i will generate puzzle from that same file. But i cant get it working, maybe someone of you could help me a bit.

This part of code [Written in Eclipse/Java], should get picked image path from gallery and send it to unity player. It's working with this, but this doesn't returns "real" image path:

It returns something like this: "content://media/external/images/media/4642"

Code (CSharp):

1. public void onActivityResult(int requestCode, int resultCode, Intent data)
2.     {
3.         if(resultCode == RESULT_OK)
4.         {
5.                 Uri selectedImage = data.getData();
6.          
7.                 UnityPlayer.UnitySendMessage("Main Camera", "OpenImage", selectedImage.toString());
8.         }
9.     }

I found this solution below and it seems that it should be working, but it's not. It just crash my game when i try to run it:

Code (CSharp):

1. public void openGallery()
2.     {
3.         Intent intent = new Intent(Intent.ACTION_PICK,
4.         android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI);                
5.         startActivityForResult(intent, 1);
6.     }
7.  
8.     public void onActivityResult(int requestCode, int resultCode, Intent data)
9.     {
10.         if(resultCode == RESULT_OK)
11.         {
12.             Uri selectedImage = data.getData();
13.      
14.             UnityPlayer.UnitySendMessage("Main Camera", "OpenImage", getRealPathFromURI(selectedImage));
15.         }
16.     }
17.  
18.     public String getRealPathFromURI(Uri contentUri) {
19.  
20.         // can post image
21.         String [] proj={MediaStore.Images.Media.DATA};
22.         Cursor cursor = managedQuery( contentUri,
23.                         proj, // Which columns to return
24.                         null,       // WHERE clause; which rows to return (all rows)
25.                         null,       // WHERE clause selection arguments (none)
26.                         null); // Order-by clause (ascending by name)
27.         int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
28.         cursor.moveToFirst();
29.  
30.         return cursor.getString(column_index);
31. }

I tried a lot of other solutions but all of them just crash the game. I tried to load image to Bitmap and then convert bitmap to string and send it to unity player. But it always crash, and i think it's because i'm not getting the "real" path for image. Any ideas?

 

Ok, this is working perfectly.

Code (CSharp):

1.     @Override
2.     public void onActivityResult(int requestCode, int resultCode, Intent data)
3.     {
4.         super.onActivityResult(requestCode, resultCode, data);
5.      
6.         if(resultCode == RESULT_OK)
7.         {
8.             Uri selectedImage = data.getData();
9.          
10.             File image = new File(selectedImage.getPath());
11.          
12.             String s = getRealPathFromURI(selectedImage);
13.  
14.             UnityPlayer.UnitySendMessage("Main Camera", "OpenImage", "file://" + s);
15.         }
16.     }
17.  
18.     private String getRealPathFromURI(Uri contentURI) {
19.         Cursor cursor = getContentResolver().query(contentURI, null, null, null, null);
20.         if (cursor == null) { // Source is Dropbox or other similar local file path
21.             return contentURI.getPath();
22.         } else {
23.             cursor.moveToFirst();
24.             int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
25.             return cursor.getString(idx);
26.         }
27.     }

 

Can you explain the code please?
I'm new in c#. I just copied and pasted the code above in new C#script. But there are many errors.

 

Code above is not C#, its Java they look similiar thats why it confused you.
https://docs.unity3d.com/Manual/PluginsForAndroid.html