@Override
protected void onPause(){
    super.onPause();
    try {
        // Modes: MODE_PRIVATE, MODE_WORLD_READABLE, MODE_WORLD_WRITABLE
        FileOutputStream output = openFileOutput("latlngpoints.txt",
                Context.MODE_PRIVATE);
        DataOutputStream dout = new DataOutputStream(output);
        dout.writeInt(listPoints.size()); // Save line count
        for (LatLng point : listPoints) {
            dout.writeUTF(point.latitude + "," + point.longitude);
            Log.v("write", point.latitude + "," + point.longitude);
        }
        dout.flush(); // Flush stream ...
        dout.close(); // ... and close.
    } catch (IOException exc) {
        exc.printStackTrace();
    }
}

protected void onResume(GoogleMap googleMap) {
    super.onResume();
    try {
        FileInputStream input = openFileInput("latlngpoints.txt");
        DataInputStream din = new DataInputStream(input);


        int sz = din.readInt(); // Read line count
        for (int i = 0; i < sz; i++) {
            String str = din.readUTF();

            String[] stringArray = str.split(",");
            double latitude = Double.parseDouble(stringArray[0]);
            double longitude = Double.parseDouble(stringArray[1]);
           // newlist.add(new LatLng(latitude, longitude));
            Log.v("Read", String.valueOf(latitude));
            Log.v("Read1", String.valueOf(longitude));

            LatLng latLng = new LatLng(Double.parseDouble(stringArray[0]),Double.parseDouble(stringArray[1]));
            mMap1 = googleMap;

            mMap1.addCircle(new CircleOptions()
                    .center(latLng)
                    .radius(100)
                    .strokeColor(Color.RED));


        }
        din.close();

    } catch (IOException exc) {
        exc.printStackTrace();
    }
}