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Nadeem Developer, Pakistan
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10 Years Exp.
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• Proficient in use of Vb.Net. ASP.NET, SQL Server and Android Development. • Experienced with all phases of designing, coding and testing applicatio...Read More
Akbar A.Data analyst, India
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Welcome to my Gig! My name is Akbar Ali, I am a Post Gradute in Master of Computer Application from Sikkim Manipal University. I will give 100% gua...Read More
Tunji A.Software developer, Kenya
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10 Years Exp.
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I am a fulstack java developer with over 10 years experience with integrations in the java space.
Rishika M.Odoo Developer , India
$4 /hr
1 Years Exp.
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I am an Odoo Developer with insight of technical knowledge in python, XML, and JS required for odoo. Have knowledge about functional flow of odoo mod...Read More
Shubhrajyoti S.Software engineer and data scientist, India
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I am a multi language programmer with several years of practical experience. Artificial intelligence and Data science are also my well known domains.
Nishant K.Sr Associate / Lead engineer, India
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I am working as a senior web developer at Publicis Sapient Pvt Ltd wit total experience of 8 years. I have 3 years of onsite experience working in Lon...Read More
Saadhana R.Web Designer, India
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I am a certified HTML,CSS,Javascript, and python developer. I have recently completed my CCNA course.
Rajmah S.Executive Assistant / General Virtual Assistant, Philippines
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I have 5 years’ experience as a Virtual Assistant, worked with different nationalities (Australian, Kiwi, British and American). Within the span of 5...Read More
Christina D.Web Developer and social media Specialist, Lebanon
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5 Years Exp.
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Senior Web Developer specializing in front end development and Social Media Officer. Experienced with all stages of the development cycle for dynamic...Read More
Shashank Srivastava Software developer , India
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I am a well progressive programmer with the knowledge of python, xml, html, mysql and c++. Taken part in Google and Facebook workshops many times and...Read More
Uma Academician, India
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I have teaching experience.
Douglas A.Java Developer, Kenya
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Articles Related To Xml


Nowadays, Android is not just on tens of thousands of different phones and tablets. It’s on your wrist, in your living room, in your car, and as soon we start assigning IP addresses to inanimate objects, it is going to be pretty much everywhere around us. A lot of ground for even an experienced Android developer to cover!

 

Also there are over one million apps on Google Play, not counting Amazon AppStore or markets we are not generally interested in.

 

So, how can an independent developer create a successful app in this huge market with big players? I have no idea, I haven’t made a successful app! But, I have made a cute one, and I’d like to share my story with you.

Few Android Studio Tips, Tricks & Resources you should be familiar with, as an Android Developer

The reason of this article, is to list helpful tips, tricks, shortcuts and resources for Android Studio that will improve your overall efficiency and performance.

 

1.Material Colors theme for Android Logcat

To change Android Studio Logcat you need to go to:Preferences (Settings on Windows / Linux machines) → Editor → Colors & Fonts → Android Logcat and change the foreground color for every type of log.

 

2. Prevent Android Studio Logcat from clearing the log for the current application when it crashes. 

To do that you need to go to theAndroid Monitorpanel and chooseEdit filter configurationon the right side dropdown.

 

3. Apply a proper code style to your IDE (IntelliJ / Android Studio). 

Go toPreferences → Code Style → Javaand in aSchemedropdown you can choose your code style (or set up a new one).

2 styles which are especially worth to mention:

Square Java Code Styles with Android

Google Java Code Style.

 

4. Use split screen for increasing efficiency.

To turn this feature on, you need to right mouse click on the tab of your main screen and choose Split Vertically / Horizontally feature.

But to be as efficient as possible we need to set up a custom keyboard’s shortcut. To do that go to Preferences → Keymap and search for Split Vertically. Then open a context menu and click Add Keyboard Shortcut

It is shown on a gif below. You can define the shortcut for a horizontal split view as well.

 

5. Distraction Free Mode. 

You can enable it by going to: View → Enter Distraction Free Mode

 

6. Use Live Templates

you can use many already defined templates, like for Toasts or if conditions.

you can use your own custom templates. Here is a great reference article by Reto Meier. You can also refer to the IntelliJ IDEA documentation.

 

Learn XML And Java

Extensible markup language (XML) is a markup language that’s the foundation for the Android user interface (UI) and elements. Java is the back-end coding language of the Android platform, and it’s used with binding functionality with your XML layouts. Let’s take a look at a small example.

 

<?xml version="1.0" encoding="utf-8"?> <layout xmlns:android=http://schemas.android.com/apk/res/android"> <data> <variable name="user" type="com.example.User"/> </data> <LinearLayout android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@{user.firstName}"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@{user.lastName}"/> </LinearLayout> </layout>

 

This small layout has one data object defined as “User.” For developers used to binding elements in even web design, this should be intuitive for you. The data element is defined in Java, and then the object data is bound to the front-end layout element. In this example, we have a first and last name. The following Java code is an example of a User class used for the binding.

 

public class User { public final String firstName; public final String lastName; public User (String firstName, String lastName){ this.firstName = firstName; this.lastName = lastName; } }

Notice that the constructor takes a first and last name variable and binds the data to the public class properties. When the screen opens on the device, this data is then bound to the front-end elements.

 

Before you get started in Android Application development, you should be expert in both of these technologies. Understanding the fundamentals of XML formats is relatively easy, but Java is an object-oriented language and object-oriented programming (OOP) can be challenging if you’re not familiar with the concept. A newer language and framework, Kotlin, has been introduced to help advance Android app development. It can also be used with legacy Java apps as Kotlin co-operates with Java code.

 

The best way to learn Java is to dive into someone else’s code. GitHub is filled with open-source projects that help you understand Java and OOP concepts. The better your OOP skills are, the easier it will be to create a better coded, less buggy Android app.

 

Understand Memory Limitations

Mobile devices don’t have the high memory limitations that desktops have. In mobile programming, you must learn to code with smaller memory limitations in mind. If you carelessly use memory on an Android device, you run the risk of your app crashing due to “out of memory” errors.

To work around this, use services on the device sparingly and release memory resources when your app is hidden. You can release memory resources by overriding the onTrimMemory event although you should know that this isn’t a magic solution that allows you to ignore other performance optimization throughout your code. The following is a small sample of pseudocode that shows you how to override the event.

@Override public void onTrimMemory(int level) { if (level >= TRIM_MEMORY_MODERATE) {

//release resources here } }

Google also recommends that you avoid or at least reduce the use of bitmaps to lower the memory use when your app is running on the device. 

 

Don’t Use The Emulator For Real-World Testing

The Emulator in Android Studio is good for development and even debugging, but it doesn’t fully simulate a working Android device. You can consider basic environment features with the Emulator, but when it comes to testing, you should always use actual devices.

Of course, this is a huge investment for an Android developer, but it will make the entire development and testing life cycle much more efficient. It also ensures that you’re able to test your applications in various conditions as the user changes settings on the actual device. You can, however, use automated cloud solutions such as Amazon’s Testing platform.

 

Testing should never be taken lightly. It should be a major part when you design and deploy apps for your clients. Fewer bugs means happier users, and it can also mean a more successful app in Google Play. This doesn’t mean that you need to buy every device on the market to test your app on, but you should account for some of the more popular ones and the most common screen sizes.

If you’ve any idea or concept of application and you decide to build your application concept in best programming language, Python is on top of the table. But you may be asking yourself,

What exactly can I use Python for?”

The app development market is greedy but flexible. Trends define the need, and needs define actual trends. Python is now a trend, no doubt about it. Python is also really friendly, thanks to its popularity and the helpful community.

Python is so good, rather than describing what it can do, it’s actually faster to say what Python can’t do. Python is a high-level general purpose programming language that gives multiple paradigms like object-orientation, and structural and functional programming for software development. It works on cross-platform operating systems and may be used across to develop a wide range of applications including those intended for image processing, text processing, web, and enterprise level using scientific, numeric and data from network. According to Stack Overflow, Python is the fastest-growing programming language in the world, and it will still grow even faster. It’s already well recognised as a really universal, versatile, stable, and easy to learn programming language.

The growth rate of python wasn't something easy to realise. There are various attributes of python programming tool which has provided it with a tremendous successful journey. Python features a major role in the latest technologies of current and future times like machine learning and artificial intelligence. 

Who uses Python

Python is used almost everywhere. Just take a glance at the following list (which isn't exhaustive). the purpose is that Python will apply to whatever you’re interested in, no matter what it is.

  • In internet search: Google used Python everywhere in its early development phase.
  • In Space: The International Space Station’s Robonaut 2 robot uses Python for its central command system. Python is planned to be used during a European mission to Mars in 2020 to gather soil samples.
  • Physics Laboratory: Python helps understand the data analysis from some atom smashing experiments at the CERN Large Hadron Collider.
  • In astronomy: The MeerKat astronomical telescope array (the largest astronomical telescope within the Southern Hemisphere) uses Python for its control and monitoring systems.
  • In movie studios: Industrial Light and Magic (Star Wars geniuses) uses Python to automate its movie production processes. Side Effects Software’s computer generated imagery program Houdini uses Python for its programming interface and to script the engine.
  • In games: Activision uses Python for building games, testing, and analysing stuff. They even use Python to search out people cheating by boosting one another.
  • In music/video industry: Spotify music streaming service uses Python to send you music. Netflix uses Python to make sure movies play (stream) no end. Python is used a lot for YouTube.
  • In medicine: The Nodality company uses Python to handle information that they use to search for a cure to cancer.

What to do with Python

With Python, you'll learn to create such things as a math trainer for practicing your times tables or an easy encryption (a secret code) program. And when you’ve honed your skills over time, there are other things you’ll be able to do, such as:

  • Using Tkinter (or other widget sets), you can write user applications that use graphics rather than just text to interact with the user.
  • You can extend other programs like Blender (a 3D modeling program), GIMP (a 2D photo-retouching program), and LibreOffice (office programs), among many others by writing custom scripts.
  • You can write games with graphics using Tkinter or the Pygame or Kivy libraries.
  • You can use the matplotlib library to draw complex graphs for your math or science courses.
  • You can design a website using web frameworks that are based on Python like Django and Flask have recently become very popular for web development.
  • You can use python libraries for machine learning, data science and data visualization.
  • Using Python scripting you can writing small programs for design automate simple tasks.
  • Using the openCV library, you can experiment with computer vision. People who are into robotics use it to help their robots see and grab things and to avoid obstacles when moving.

Whatever you want it to do, there’s a good chance someone has already written code to do it or to help you to do it yourself.

Application of Python

  1. Web frameworks and web application: Python has been used to create a web frameworks including CherryPy, Django, TurboGears, Bottle, Flask etc. These frameworks provide standard libraries and modules which simplify tasks associated with content management, interaction with database and interfacing with different internet protocols like HTTP, SMTP, XML-RPC, FTP and POP. Plone, a content management system; ERP5, an open source ERP which is employed in aerospace, apparel and banking; Odoo- a consolidated suite of business applications; and Google App engine are some of the popular web applications based on Python.
  2. GUI based desktop application: Python has simple and the ability to work on multiple operating systems which make it a desirable choice for developing desktop-based applications. There are various GUI toolkits available which help developers to create highly functional Graphical User Interface (GUI). The various applications developed using Python includes image processing, graphics design, games, scientific and computational application.
  3. Enterprise and business application: With features that include special libraries, extensibility, scalability and simply readable syntax, Python may be a suitable coding language for customizing larger applications. Reddit, which was originally written in Common Lips, was rewritten in Python in 2005. Python also contributed in a very large part to functionality in YouTube.
  4. Language developement: Python’s design and module architecture has influenced development of various languages. Boo language uses an object model, syntax and indentation, almost like Python. Further, syntax of languages like Apple’s Swift, CoffeeScript, Cobra, and OCaml all share similarity with Python.
  5. Operating systems: Python is usually an integral part of Linux distributions. as an example, Ubuntu’s Ubiquity Installer, and Fedora’s and Red Hat Enterprise Linux’s Anaconda Installer are written in Python. Gentoo Linux makes use of Python for Portage, its package management system.

Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language like HTML. CSS is a cornerstone technology of the World Wide Web, alongside HTML and JavaScript

 

CSS is designed to enable the separation of presentation and content, including layout, colors, and fonts. This separation can improve content accessibility, provide more flexibility and control in the specification of presentation characteristics, enable multiple web pages to share formatting by specifying the relevant CSS in a separate .css file, and reduce complexity and repetition in the structural content.

 

Separation of formatting and content also makes it feasible to present the same markup page in different styles for different rendering methods, such as on-screen, in print, by voice (via speech-based browser or screen reader). CSS also has rules for alternate formatting if the content is accessed on a mobile device.

 

The name cascading comes from the specified priority scheme to determine which style rule applies if more than one rule matches a particular element. This cascading priority scheme is predictable.

 

The CSS specifications are maintained by the World Wide Web Consortium (W3C). Internet media type (MIME type) text/css is registered for use with CSS by RFC 2318 (March 1998). The W3C operates a free CSS validation service for CSS documents.

 

In addition to HTML, other markup languages support the use of CSS, including XHTML, plain XML, SVG, and XUL.

Articles Related To Xml


 
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