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Archive for April, 2012

Introducing “Even or Odd” – My First Android Game :)

April 25, 2012 18 comments

Hello everyone,

I would like to introduce you the freshly cooked “Even or Odd” game, an addictive casual game for Android.

The idea of the game is pretty simple: you are given a series of numbers, and have 30 seconds at your disposal to answer if the given numbers are even or odd ones. Give a correct answer and you get +100 points, you give a wrong answer and you go down: -100 points. Try to give as many correct answers as you can in 30 sec.

This is my first attempt into this kind of Android apps. What was new from what I did previously, is that I made use of MediaPlayer to play sounds. Using MediaPlayer to play sounds will be the subject of another tutorial in the upcoming period of time. Stay tuned. ;)

Android Game Even or Odd

 

First Android Android Game

 

Give it a try and let me know your high score :).

9GAG Pictures Funny Images

Creating and Displaying a Custom Dialog in Android

April 16, 2012 22 comments

In this post I would like to describe the process of creating and displaying a custom dialog. Though the Android documentation describes pretty well the topic, I faced some problems implementing it, and I would like to share my findings.

The final output should look like this:

Android Custom Dialog

1. The first issue I have encountered was that I was getting a BadTokenException in the onCreateDialog() method where I was instantiating the Dialog: android.view.WindowManager$BadTokenException: Unable to add window — token null is not for an application, 

Context context=getApplicationContext();
Dialog dialog=new Dialog(context);

Well, though the Android documentation suggests to use getApplicationContext(); actually it turns out that this is not the proper way to do it and most likely it will throw an exception. The correct way is to use this, or “ActivityName”.this instead of getApplicationContext(). For example:

Context context=MainActivity.this;
Dialog dialog=new Dialog(context);

 

2. The second issue I was facing was that I wanted to get rid off the standard dialog title.
Normally you would set the Dialog title with this:

dialog.setTitle("Dialog Title");

However, if you don’t want to display a standard title for your dialog, not calling the above line most probably won’t meet your expectations, because it will leave an empty space where the title should be.

Hopefully, this is an easy fix. Just call requestWindowFeature(Window.FEATURE_NO_TITLE); and you are done.

dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);

 

To sum up with a concrete working example, below I presented an implementation of a simple custom dialog.

custom_dialog.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="250dp"
   android:layout_height="match_parent"
   android:background="#8F1A3B"
   android:orientation="vertical" >

<TextView
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:layout_marginBottom="20dp"
   android:text="Custom Dialog"
   android:textSize="18dp" />

<Button
   android:id="@+id/restart"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="Restart Game" />

</LinearLayout>

 

MainActivity:


public class MainActivity extends Activity {

Dialog dialog;
int DIALOG_GAME_RESTART=100;

@Override
public void onCreate(Bundle savedInstanceState) {
   // ............
}

@Override
protected Dialog onCreateDialog(int id) {
   switch (id) {
   case DIALOG_GAME_RESTART:
     Context context=MainActivity.this;
     dialog=new Dialog(context);
     dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);

     dialog.setContentView(R.layout.custom_dialog);

     Button restart=(Button)dialog.findViewById(R.id.restart);

     restart.setOnClickListener(new OnClickListener() {
     @Override
     public void onClick(View v) {
        dialog.dismiss();

        //whatever code you want to execute on restart
     }
     });
   break;

   default: break;
   }
   return dialog;
}
}

ITMoldova – My First Android Application.

April 10, 2012 5 comments

Although it has passed awhile since I published my first android application on Google Play, and I published already my second Android App meanwhile, I decided to write about it as well, as almost all my posts from this blog till now are findings and experience gained while I was working on ITMoldova app.

ITMoldova.com is a Moldavian site that provides daily IT News for romanian speaking people. The main purpose of Android application is to check the RSS feed of the site if there are any new articles. If it turns out that new articles have been published on the site, then launch a status bar notification and notify the user. And of course, the user is able to see the most recent articles and read them right from his device.

The application settings provides the ability to set up the desired interval of time, when the application should verify the RSS feed, plus the possibility to Turn On or Off this feature.

ITMoldova Main

ITMoldova

I have some doubts in regards to how many of my readers and visitors of this blog understand Romanian language, but just in case, here’s the Google Play download link: :)

Get it on Google Play - ITMoldova

Do you want to build your own RSS Reader Application?

Here are the topics that will help you achieve this:

Creating A Simple RSS Application in Android

Understanding AsyncTask – Once and Forever

How to verify an RSS Feed if New Articles have been published.

Working With Services – IntentService

Showing status bar notifications in Android

How to Create Android Menus

Writing and Reading from SharedPreferences

Detecting Internet Connection

Building a Custom Fancy ListView in Android

After reading (and exercising) the above tutorials, you should be able to build your own Cool RSS Application :).

 

Please visit the Android Tutorials page for more Android tutorials.

GAG Pictures – Have Fun! Spread The Fun!

April 8, 2012 4 comments

9gag picturesHello everyone, I would like to introduce you my second Android application published on Google Play  – GAG Pictures. Compared with the first one, this application is intended to bring you much fun.

GAG Pictures is your daily set of funny images! Every time the application is launched it downloads a set of new funny images from the famous site 9gag.com. Every image has a Share button so you can share that hilarious image with your friends. The current version allows you to share only the direct link to image, but in the upcoming releases the ability to send the image itself will be provided.

9gag funny image

Have fun! :)

Get it on Google Play - GAG Pictures

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