What's New in Ubuntu 14.04 LTS

Released on April 17, 2014, Ubuntu 14.04 is the latest Long Term Support release of the world's most popular open-source operating system.

See What's New in Ubuntu 14.04 LTS

Step-by-step to create a simple Android App

The video show the steps to build a simple Android App using Android-ADT (Eclipse), in 7 minutes. In the app, clicking on the button to show a photo, and clicking on the photo to remove itself. In the end of the video show how it in working.

• The app generated using the Project Wizard of Android SDK Tools 22.6.2, ActionBarActivity created with Fragment. So we have to modify fragment_main.xml for layout, and handle our ui elements in onCreateView() of PlaceholderFragment class.
• The photo is stored inside the app /res/drawable/spiderman.jpg, its name must be in lowercase letter.

/res/layout/fragment_main.xml

<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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.example.showmyphoto.MainActivity$PlaceholderFragment" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />
    
    <Button
        android:id="@+id/mybutton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Show my photo" />
    
    <ImageView
        android:id="@+id/myimageview"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

/src/com/example/showmyphoto/MainActivity.java

package com.example.showmyphoto;

import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.os.Build;

public class MainActivity extends ActionBarActivity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  if (savedInstanceState == null) {
   getSupportFragmentManager().beginTransaction()
     .add(R.id.container, new PlaceholderFragment()).commit();
  }
 }

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {

  // Inflate the menu; this adds items to the action bar if it is present.
  getMenuInflater().inflate(R.menu.main, menu);
  return true;
 }

 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
  // Handle action bar item clicks here. The action bar will
  // automatically handle clicks on the Home/Up button, so long
  // as you specify a parent activity in AndroidManifest.xml.
  int id = item.getItemId();
  if (id == R.id.action_settings) {
   return true;
  }
  return super.onOptionsItemSelected(item);
 }

 /**
  * A placeholder fragment containing a simple view.
  */
 public static class PlaceholderFragment extends Fragment {
  
  Button myButton;
  ImageView myImageView;

  public PlaceholderFragment() {
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
    Bundle savedInstanceState) {
   View rootView = inflater.inflate(R.layout.fragment_main, container,
     false);
   
   myButton = (Button)rootView.findViewById(R.id.mybutton);
   myImageView = (ImageView)rootView.findViewById(R.id.myimageview);
   
   myButton.setOnClickListener(new OnClickListener(){

    @Override
    public void onClick(View v) {
     myImageView.setImageResource(R.drawable.spiderman);
    }});
   
   myImageView.setOnClickListener(new OnClickListener(){

    @Override
    public void onClick(View v) {
     myImageView.setImageBitmap(null);
    }});
   
   return rootView;
  }
 }

}

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~ How to record screen on Android KitKat

Helpful tips about getting discovered on Google Play search

PlayBytes: App Visibility and Search

Check out some helpful tips about getting discovered on Google Play search. This video review how to avoid common publishing and filtering oversights, recommendations for your Store Listing, and other helpful discoverability features.

Related Links:
Android Developer Help Center - http://support.google.com/googleplay/android-developer