Skip to content

Instantly share code, notes, and snippets.

@udacityandroid
udacityandroid / MainActivity.java
Created Jun 27, 2015
Android for Beginners : Menu Solution Code
View MainActivity.java
package com.example.android.menu;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
@udacityandroid
udacityandroid / ImageView.java
Created Jun 15, 2015
Android for Beginners : Simplified ImageView class
View ImageView.java
/**
* Displays an image, such as an icon.
*/
public class ImageView extends View {
// Resource ID for the source image that should be displayed in the ImageView.
private int mImageId;
// Context of the app
private Context mContext;
@udacityandroid
udacityandroid / TextView.java
Created Jun 15, 2015
Android for Beginners : Simplified TextView class
View TextView.java
/**
* Displays text to the user.
*/
public class TextView extends View {
// String value
private String mText;
// Text color of the text
private int mTextColor;
@udacityandroid
udacityandroid / Helper Method - releaseMediaPlayer()
Last active Jun 16, 2021
Miwok app: Cleaning up MediaPlayer resources
View Helper Method - releaseMediaPlayer()
/**
* Clean up the media player by releasing its resources.
*/
private void releaseMediaPlayer() {
// If the media player is not null, then it may be currently playing a sound.
if (mMediaPlayer != null) {
// Regardless of the current state of the media player, release its resources
// because we no longer need it.
mMediaPlayer.release();
@udacityandroid
udacityandroid / Method 1
Last active Jun 13, 2021
Android Development for Beginners : Define a Method
View Method 1
private String createCalendarEventReminder(String eventName, String location, int minutesAway) {
String reminder = "You have an upcoming event in " + minutesAway + " minutes.";
reminder = reminder + " It is " + eventName + " held at " + location + ".";
return reminder;
}
@udacityandroid
udacityandroid / Option A
Last active Jun 13, 2021
Android Development for Beginners : Calculate the Price Method
View Option A
/**
* Calculates the price of the order based on the current quantity.
*
* @return the price
*/
private int calculate price(int quantity {
int price = quantity * 5;
return price;
}
View Calculate price method
/**
* 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;
}
@udacityandroid
udacityandroid / activity_main.xml
Last active May 31, 2021
Android for Beginners : Add the Chocolate Topping Checkbox Solution XML
View activity_main.xml
<ScrollView 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"
tools:context=".MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
@udacityandroid
udacityandroid / MainActivity.java
Last active May 31, 2021
Android for Beginners : Add the Chocolate Topping Checkbox Solution Java
View MainActivity.java
package com.example.android.justjava;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.CheckBox;
import android.widget.TextView;
/**
* This app displays an order form to order coffee.
@udacityandroid
udacityandroid / Code snippet in InboxActivity.java
Last active May 31, 2021
Android for Beginners : If/Else Email Quiz
View Code snippet in InboxActivity.java
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.";