LoginRobots.java

class LoginRobot {
    LoginRobot username(String username) { 
    	onView(withId(R.id.login_username)).perform(typeText(username), closeSoftKeyboard());
    	return this;
    }
    
    LoginRobot password(String password) { 
	onView(withId(R.id.login_password)).perform(typeText(password), closeSoftKeyboard());
    	return this;
    }
    ResultLoginRobot login() {
    	Intents.init();
    	Matcher<Intent> matcher = hasComponent(MainActivity.class.getName()); 
    	onView(withId(R.id.login_button)).perform(scrollTo(), click());
    	return new ResultLoginRobot();
    }
}

class ResultLoginRobot { 
    ResultRobot isSuccess() {
    	onView(withId(R.id.login_button)).perform(click());
  	intended(matcher);
  	Intents.release(); 
    }
}