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I would like to use an external executable within my android app. It is distributed for different platforms and under windows it's a console program that can be used in this way For Android the executable is called senpai-arm. I moved it to an Android folder and tried to start it in a similar way to the link above but it won't start. 

 String storage = context.getFilesDir().getAbsolutePath();
 // Create the proccess in JAVA
 Process proc = Runtime.getRuntime().exec(storage+ "/senpai-arm");

error message below:

java.io.IOException: Error running exec().

Command: [/data/user/0/com.example.jp.fanfar/files/senpai-arm] Working Directory: null Environment: nul
cause: Permission denied

Sorry that I didn't observe the cause Permission denied in my original question. I rephrase my question a bit.

  • Is it possible to start a program like this?
  • What permissions do I need? I have read/write external storage permission.

(I have the source code in C++ and read about NDK but I was hoping to take a shortcut by using the distributed executable instead.)

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