// MainActivity.java
package example.fileaccessexample;

import android.content.Context;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;

public class MainActivity extends AppCompatActivity {

  private static final String TAG = "MainActivity";

  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      try {

            FileOutputStream fileOutputStream1 = openFileOutput("foo.txt", Context.MODE_WORLD_READABLE);  // Accessing File in Permissive Mode (Java) warning issued here 
            FileOutputStream fileOutputStream2 = openFileOutput("foo.txt", Context.MODE_WORLD_WRITEABLE); // Accessing File in Permissive Mode (Java) warning issued here 

        } catch (FileNotFoundException | SecurityException e) {
            e.printStackTrace();
        }
      extendAccessPermission(new File("myfile.txt"));
  }

  public  void extendAccessPermission(File f) {
      if ( !f.setReadable( true , false )) {           // Permissive File Mode (Java) warning issued here 
          Log.e(TAG,"Unable to set readable permission");
      }

      if ( !f.setWritable( true , false )) {           // Permissive File Mode (Java) warning issued here 
          Log.e(TAG,"Unable to set writable permission");
      }
  }
}