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With that confirmed, let’s take a step back and have a real look at your first Android application. Activity is the base class for the visual, interactive components of your application; it is roughly equivalent to a Form in traditional desktop development. The following snippet shows the skeleton code for an Activity-based class; note that it extends Activity, overriding the onCreate method. package com.paad.helloworld; import android.app.Activity; import android.os.Bundle; public class HelloWorld extends Activity {     /** Called when the activity is first created. */    @Override    public void onCreate(Bundle icicle) {        super.onCreate(icicle);    } } What’s missing from this template is the layout of the visual interface. In Android, visual components are called Views, which are similar to controls in traditional desktop development. In the Hello World template created by the wizard, the onCreate method is overridden to call setContentView, which lays out the user interface b

Versions of the SDK, Java, and Eclipse are available for Windows, Mac OS, and Linux. Android code is written using Java syntax, and the core Android libraries include most of the features from the core Java APIs. The biggest challenge with Android, as with any new development toolkit, is learning the features and limitations of its APIs. The power of Android comes from its APIs, not from Java, so being unfamiliar with all the Java specific classes won’t be a big disadvantage. To get started, you’ll need to download and install the following:  The Android SDK  Java Development Kit (JDK) http://java.sun.com/javase/downloads/index.jsp Downloading and Installing the SDK The Android SDK is completely open. http://code.google.com/android/download.html you can use any text editor or Java IDE you’re comfortable with and use the developer tools in the SDK to compile, test, and debug the code snippets and sample applications. Developing with Eclipse Using Eclipse with the ADT plug-in for your An

Android Libraries for developing the application. Core APIs for android Android offers a number of APIs for developing your applications. The following list of core APIs should provide an insight into what’s available; all Android devices will offer support for at least these APIs: android framework ❑ android.util The core utility package contains low-level classes like specialized containers, string formatters, and XML parsing utilities. ❑ android.os The operating system package provides access to basic operating system services like message passing, interprocess communication, clock functions, and debugging. ❑ android.graphics The graphics API supplies the low-level graphics classes that support canvases, colors, and drawing primitives, and lets you draw on canvases. ❑ android.text The text processing tools for displaying and parsing text. ❑ android.database Supplies the low-level classes required for handling cursors when working with databases. ❑ android.content The content API is

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We know that greed and fear rule the markets. But did you know that when investors gets too greedy, markets usually fall, and when investors are overcome with fear, markets usually rise. So how can when we monitor investors emotions and take advantage of investors emotional extremes? Welcome to the world of investor sentiment analysis. Investor psychology has been analysed for at least 250 years. Charles MacKay wrote his book, 'Extraordinary Popular Delusions And The Madness Of Crowds', in 1841, describing, among other manias, the herd mentality that caused the South Sea Bubble. Since then, many academics have published financial theories based on the concept that individuals act rationally and consider all available information in the decision-making process. But real life frequently demonstrates that the behavior of equity markets is irrational and unpredictable. A field known as "behavioural finance" has evolved over the years attempting to explain how emotions inf

Optimizing any web page involves both on-page and off-page optimization. Whereas on-page optimization emphasizes the use of carefully selected keywords to write a web page, off-page optimization is all about building links to the web page from other web pages as well as other websites. The leading search engines' ranking algorithms have placed much importance on links that it is not possible to achieve a high-ranking based solely on competitive keywords. Links There are two basic types of links used in websites. One is the navigational link which connects pages within a site. The other one is the hypertext link which offer parenthetical material, footnotes, digression or parallel themes that can serve to provide relevant information in relation to the main content of the page. Both types of links however, can be disruptive or problematic in the overall site design when not used in its proper context. Links can distract attention especially if a paragraph or text is filled up with i