udacityandroid

int numberOfEmailsInInbox = 0;
int numberOfDraftEmails = 2;
String emailMessage = "You have " + numberOfEmailsInInbox + " emails. ";
String draftMessage = "You have " + numberOfDraftEmails + " email drafts.";
if (numberOfEmailsInInbox == 0) {
    emailMessage = "You have no new messages. ";
}

if (numberOfDraftEmails == 0) {
    draftMessage = "You have no new drafts.";

udacityandroid

/**
 * Calculates the price of the order.
 * 
 * @param quantity is the number of cups of coffee ordered
 */
private void calculatePrice(int quantity) {
    int price = quantity * 5;
}

New method in MainActivity.java

/**
 * This method displays the given text on the screen.
 */
private void displayMessage(String message) {
    TextView priceTextView = (TextView) findViewById(R.id.price_text_view);
    priceTextView.setText(message);
}

Option A

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity">

activity_main.xml

<RelativeLayout
       xmlns:android="http://schemas.android.com/apk/res/android"
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:padding="16dp">
 
   <TextView
        android:text="I’m in this corner"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"