private SharedPreferences mSharedPreferences;
  private ClingManager mClingManager;

@Override
  protected void onResume() {

super.onResume();

 if (mSharedPreferences.getBoolean(START_TUTORIAL_KEY, true)

  && (mClingManager == null || !mClingManager.isStarted()))

 mClingManager = new ClingManager(this);

 // When no Target is set, Target.NONE is used

mClingManager.addCling(new Cling.Builder(this)

  .setTitle("Welcome to this app")

  .setContent("This application is meant to be the best app you will ever try on android.")

  .build());

 mClingManager.addCling(new Cling.Builder(this)

  .setTitle(R.string.drawer_tutorial_title)

  .setContent(R.string.drawer_tutorial_message)

  .setMessageBackground(getResources().getColor(R.color.teal))

  .setTarget(new ViewTarget(this, R.id.drawer))

  .build());

 mClingManager.addCling(new Cling.Builder(this)

  .setTitle("Here is another feature")

  .setTitleTextAppearance(R.style.textAppearanceTitleNice)

  .setContent("Look how amazing this feature is, blablabla blablabla bla bla.")

  .setContentTextAppearance(R.style.textAppearanceContentNice)

  .setTarget(new ViewTarget(mFeatureView))

  .setClingColor(getColor(R.color.cling))

  .setMessageBackground(getColor(R.color.red))

  .build());

 mClingManager.setCallbacks(new ClingManager.Callbacks() {

 @Override

 public boolean onClingClick(int position) {

  // We return false to tell to cling manager that we didn't handle this,

  // so it can perform the default action (ie. showing the next Cling).

  // This is the default value returned by super.onClingClick(position), so

  // in a real project, we would just leave this method unoverriden.

  return false;

 
}

  @Override

 public void onClingShow(int position) {

  Toast.makeText(MyActivity.this, "Cling #" + position + " is shown", Toast.LENGTH_SHORT).show();

 
}

  @Override

 public void onClingHide(int position) {

  Toast.makeText(MyActivity.this, "Cling #" + position + " is hidden", Toast.LENGTH_SHORT).show();

// Last Cling has been shown, tutorial is ended.

  if (position == 2) {

mSharedPreferences.edit()

  .putBoolean(START_TUTORIAL_KEY, false)

  .apply();

 mClingManager = null;

  
}

 
}

}
);

 mClingManager.start();

  
}