Anyone can tell me how to fix this, place holder, and error

Question

 super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.setDrawerListener(toggle);
    toggle.syncState();

    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);

    ImageView ImageMenuUtama = (ImageView) findViewById(R.id.backgroundDpn);
    Picasso.with(this).load( "http://cloudofoasis.com/api/Ivan/Gambar/bkgutama.jpg")
            .placeholder(R.drawable.placeholder)
            .fit()
            .error(R.drawable.error)
            .into(ImageMenuUtama);

}

and this picture show the code error placeholder(R.drawable.placeholder) and error(R.drawable.error):

Answer 1

You have to add image with name "placeholder" and "error" in drawable folder

STEP TO ADD DRAWABLE :

1. Copy image from your computer

2. Right click on drawable folder and click paste

   

3. Choose drawable directory

   

4. Give it name "placeholder", and click ok