got error while creating folder in samsung and one plus-x device sdcard

Question

**Caused by: android.system.ErrnoException: open failed: EACCES (Permission denied)**
  at libcore.io.Posix.open(Native Method)
  at libcore.io.BlockGuardOs.open(BlockGuardOs.java:186)
  at libcore.io.IoBridge.open(IoBridge.java:438)
  at java.io.FileOutputStream.<init>(FileOutputStream.java:87) 
  at java.io.FileOutputStream.<init>(FileOutputStream.java:72) 
  at com.snatik.storage.Storage.copy(Storage.java:278) 
  at com.snatik.storage.Storage.move(Storage.java:293) 
  at com.snatik.storage.app.MainActivity$1.onClick(MainActivity.java:90) 
  at android.view.View.performClick(View.java:5233) 
  at android.view.View$PerformClick.run(View.java:21211) 
  at android.os.Handler.handleCallback(Handler.java:739) 
  at android.os.Handler.dispatchMessage(Handler.java:95) 
  at android.os.Looper.loop(Looper.java:148) 
  at android.app.ActivityThread.main(ActivityThread.java:5539) 
  at java.lang.reflect.Method.invoke(Native Method) 
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

Answer 1

This problem is because of you don't have permission to do this on SD Card, on Android devices after version 5.0, you have to get permission's at runtime not just ask them in AndroidManifest.xml for getting android permissions at runtime i suggest you to use EasyPermissions library https://github.com/googlesamples/easypermissions then you can handle situations like permissionGranted or permissionDenied like below:

String[] perms = {Manifest.permission.CAMERA, Manifest.permission.ACCESS_FINE_LOCATION};

EasyPermissions.requestPermissions(this, getString(R.string.camera_and_location_rationale),
            RC_CAMERA_AND_LOCATION, perms);

@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);

    // Forward results to EasyPermissions
    EasyPermissions.onRequestPermissionsResult(requestCode, permissions, grantResults, this);
}

@Override
public void onPermissionsGranted(int requestCode, List<String> list) {
    // Some permissions have been granted
    // ...
}

@Override
public void onPermissionsDenied(int requestCode, List<String> list) {
    // Some permissions have been denied
    // ...
}