In applications intended for Android systems, the components of the applications are displayed to users when long and complex processes are performed. In this case, services are used. In other words, it can be said that when long-term processing needs to be done in the background and users can see them. It should be noted that services are one of the components that are most used in Android systems and are also used in more times when long and repetitive processing is done in the background of the Android system . What we mean by running in the background is that when the user even closes the application and opens another application, it runs again in the background. That is, when the application is closed, its activity is not interrupted, and it continues to operate behind the scenes or in the background. In short, we can say that services have no dependence on the life cycle of activities and can continue to operate without the need for them. Closing or opening the application and the desired program can not have any effect on the activity of services ; This means that whether the program or application is open or closed, the service will continue to operate.To better understand this issue, we will give you examples so that you can easily understand and understand them.Consider a situation where, for example, a user has opened a song in a music player. In this case, when the user wants to go to other activities or open another activity, the music that was playing will stop. But the user wants the music to continue playing and the user can safely go to other activities and work with them. In this case, the services will help and continue their activities in the background.In another example, consider the situation where the user wants to download a file, in which case the user must wait for the long download process to complete and then be able to go to other activities. This is tedious and tedious work, so we use the services so that we can continue long-term activities in the background and while continuing their activities in the background to other activities. When you use the Download Manager to download a file, you no longer must wait for the process to complete so that you can go to other activities, in which case you can activate other activities and use them at the same time as the Download Manager download process. By leaving this program, the download process will not stop, and users can easily continue their activities in other activities.
What are the different types of services in Android systems?
Services in Android systems are of two types:
1- Started Services
2- Bound Services
Started Services:
Started Services is related to the tasks that are defined for it, in that they only do the tasks that are intended for it and after that it does not do any other work. In other words, it is used to perform the intended activities and after completing that activity, it is no longer engaged in any other activity. It only does what it is supposed to do. It should be noted that this type of service is started by calling the startService and startForegroundService methods and its stopping is done by calling the stopService or stopSelf methods. In other words, we can say that in this type of service we can only use intent to start and stop services and we cannot have any other control and management on them. This service only allows us to start and stop, not to manage and control.
Today, users from all over the world can communicate with each easily and with just one click, on the other hand, we should also mention the bad aspects of this wide world, one of which is the person who have malicious intent can access the information of all people in all parts of the globe easily, which causes the person who intends to maintain their information and create high security for their system to face more problems in turn.Due to the development of the Internet and the increasing number of users who deal with the Internet, the importance of increasing the security of the system is increasing day by day and users are becoming more and more aware that they need more security, one of the most frequently discussed topics today, which attracts many users, is the security issue, and the word that is heard a lot these days and makes users curious to know more about those topics, is hack and hacker, these two words can make a huge change in the whole world of security.
Why is security so important?
Security is important for various reasons, which we are going to discuss in a few sections below.
- Increasing natural hazards:
Today, you may have seen or heard of many reports that indicate that the information in a database has been lost due to a natural disaster, such as a flood, earthquake, etc., which is the reason which has caused the owners of such information to make every effort in order to increase the security of their information by giving more importance to information security, so that they do not face the problem of losing their important information as a result of such incidents, you certainly know that security is divided into different types, and one of the types of security that plays a greater role in maintaining information security against natural disasters is physical security, and the subject of physical security has a wide world.In fact, in physical security, owners of systems that contain important information, make great efforts to provide information such as, backup data, strengthen the rooms in which the systems are located, and so on, in order to provide information security and protect it against natural disasters as well as dangers like theft.
- Increase online sales:
As we mentioned before, all the things that are related to online networks are expanding today, one of which is that users have been able to make better use of their time, and they try to save their time, so they try to meet all their needs through the Internet in a short while, these processes including online shopping may create a huge threat for user information, because, through this process, the users need to provide their information such as contact number, address, credit card number, etc., to the owners of the sites from which they intend to make their purchases, now imagine that the owners of such sites do not pay attention to the website security , what do you think might happen?The thing that is going to happen is clear, at this time, people's information will be easily available to profiteers, and users who have trusted the sites to get whatever they need, online, will regret trusting them and won’t visit this site again, so they will also tell their friends about the negative user experience which they have gained from using this site, in order to make them aware of the possible threats, so that they do not lose their personal and important information easily, and this will cause a huge decrease in the credibility of the website over time, and after a while there may be no one else to visit that site, as a result, the owners of such sites make every effort to be able to increase the security of their site by mastering security issues or with the help of experts in this field, so that users can gain a positive user experience after purchasing from their site, and finally share that positive experience with other users.
Game designing today is one of the most lucrative jobs that has attracted a lot of people. As a game designer, you need to know how to design a game step by step and what language you need for that. If you want to know these points, we suggest you follow us to the end of the article, because we will talk about the game and its programming language and the steps related to designing a game for you.
What language do we need for game programming?
There are many different languages for game coding, but depending on your expertise and field of interest, you can use the various languages that exist in this field to be able to create a suitable game for yourself. Note that the most important step in game development is to be master in that, so you should learn this skill well and try to become proficient in learning programming languages. Languages that are suitable for writing a game divide into five categories:C ++ - which makes software execution faster and is a very professional programming language -C sharp -which helps you build a high-quality game -Java -one of the best programming languages for building multi-platform games -JavaScript -which is known as the most versatile programming language in the world -And finally, the HTML5 - which is one of the most popular gaming languages-.Note that you can use any language you want to program the game, but ultimately it is your skill and power that can determine how well a game is made. Note that you have to learn your favorite languages with great attention and try to become a professional in that so that you can produce a suitable game by knowing the way to use these languages. You can use the resources of different courses in this field to learn programming languages so that you can acquire the skills needed for that. Note that in the first step, choosing a suitable instructor can help you a lot, because this instructor will introduce you to the big world of programming.
Game design steps
The first step is game design
In general, you need an Idea to program and design the game . You have to have an idea in your mind of what you want to create so that you can use your imagination to build the characters and the game environment. Note that the game design helps you to write the main scenario of the game and coordinate the stages, characters, and environment. Note that having an idea and expanding it, will help you to make your game better, and in the field of teamwork can help you to be more successful. Try to design the mood of the game in the best way.
The second step is the artistic part of the game
Another part that is very important and vital in the field of game programming is the design of the art part of the game. The art section is the section that contacts your user and gamer. So, you should try to pay attention to this issue when making the game. Note that designing a game in a way, can attract players or even make them disgusted with the game you created, so you have to spend a lot of energy and time doing this to make a well-proportioned game.
Like any man-made technology, computer games have not to stay like the first day they made and had progressed. The first game consoles and gamepads were very simple and did not have the complexity we see in them today. In the early stages, these gamepads were designed very simply and only helped the player to play simple games, but over time and as games became more complex, manufacturers. And the repairers of these game controls decided to complicate the controllers as well. In this article, we want to talk to you about the evolution of these game controls and tell you what is the history behind the consoles and first game controllers that we enjoy playing with today. However, every device has gone through a long path to be able to progress slowly and finally to the way we see it today and enjoy using it. Game controllers are no exception to this rule and were initially designed to be very simple, but as games become more advanced and other players become more professional, those old controllers will no longer be useful to players, and these new controllers will be replaced with new types.
Feature of the first designed first game controllers
In the distant past, in 1977 very simple gamepads were designed. Atari was one of the first producers of this generation, whose name and address may no longer remain today, but it was able to attract many players to itself in its time. Later, other companies, such as Sony and Microsoft, were able to design and manufacture various types of controllers. These gamepads were originally designed to be very simple and have a very simple appearance. Some even had only a handle and a button to play. These gamepads were usually square and rectangular and had no special features. You could only go left and right and back and forth or do various movements such as hitting or running with them. After that, the controllers slowly began to evolve and were eventually able to evolve into the types of wireless and cores we see today. If you want to know some models of these gamepads, follow us to the end of the article.
The evolution of the gamepad
Atari gamepad in 1977
These controllers were the first gamepads to be designed and produced in a more sophisticated way. Atari was able to make significant progress in the production of various types of gamepads by producing and designing this category. This control had a very high response and along with its simple design, it was able to attract a lot of people to itself.
Micro gamepads in 1983
This controller is another game category that was designed and produced after the Atari gamepad. The company was able to change the way we look at gamepads and was able to produce similar controllers that we see today. These controllers had special keys for moving the characters and had several other keys next to them that executed various commands.
Sega gamepad in 1988
After the microgame console , this generation was one of the most exciting and beautiful generations of controllers that every gamer could see in that period. Sega introduced its interesting and exciting console in the year one thousand nine hundred and eighty-eight. These game controllers were very high quality and interesting both in terms of hardware and software , and due to their well-designed design, they fit well in the hands of gamers. We can consider this controller as the beginning of the game control design movement towards proper ergonomics.
N64 gamepads in 1996
These gamepads looked weird, but they still managed to get a lot of attention. This game controller cannot be known as the best-designed controller, in any case, it was very good quality control and had its advantages.
Hackers have many capabilities and do their best to be able to achieve anything they want as fast as possible, and in simple terms, we can point out that there is no door which is 100% closed to hackers, and they are constantly looking for a way to penetrate and pass through all the doors, there are many social networks, each of which has different percentages of popularity among users, and a large number of them are active in each, the point that is important for all users in common, is the security of the social network , and in most cases users are looking for answers to their questions in search engines about site security and ways that can greatly increase the security of their information on the social network, one of these social networks that is very popular among different types of users is LinkedIn , which has attracted many users from all over the world.LinkedIn users, like users of all social networks, have many concerns about the security of their information on this network, and they have many questions about whether this network can be hacked or not, and the ways of increasing information security on LinkedIn, so they may spend many hours searching for answers to their questions, which is why we will pay more attention to these topics in this article.
What is LinkedIn?
LinkedIn was founded in 2002 by Reid Hoffman and the members of PayPal and Socialnet.com, this online network is important to professionals and allows them to connect with other professionals which are related to their field.
Can someone hack LinkedIn account?
The answer to this question is definitely yes, as we mentioned before, LinkedIn is very important for the users who intend to spend their time on it, and there is important information that is related to their profession in this social network, which important and valuable information is one of the main reasons that causes hackers to be more persuaded to access the accounts of different people on LinkedIn and cause malicious damage to their profession.If LinkedIn is hacked, the person may lose his/her account completely in just a few seconds and have to pay a lot of money in order to get their information back, there are many ways that hackers use to hack a LinkedIn account and gain access to important information in it, which ultimately cause a great harm, if your account is hacked by hackers, it will affect your reputation and cause a lot of damage to it, which is why, we are trying to mention the tips on how to get an individual account on LinkedIn protected from being hacked in this article, so we will state some points in this field.
How to increase the security of your information on LinkedIn?
As we mentioned, professionals on LinkedIn are very active, and if an individual account on the network is hacked, people will gain important information through which they can make a lot of money, in this part, we want to give you tips on increasing the security of your account on LinkedIn.
- Safe password selection:
In general, choosing the right password is among the most important ways to increase the security of the site which is of a great importance and can greatly affect the security of LinkedIn, some people, make a mistake in choosing the password in order not to forget their password and use their date of birth, surname, phone number, etc., which makes it easy for the hacker to guess and enter the password in order to abuse the information, so you should make sure that your password is complex and hard enough to guess, so you have to follow some tips like using uppercase, lowercase, and numbers, so that it makes hackers confused, and they have to spend more time hacking your LinkedIn, or they may even avoid hacking it, of course, it should be noted that LinkedIn has a professional support team, and if your LinkedIn account is hacked, you can easily get help from them to solve the problem, and finally, take back all your information.
People on Facebook have a lot of information, and all this information is very important to them, so they try their best to make sure that their information is secure, hackers are very interested in accessing information that is difficult to access one of which they have to break many rules to get it.Your Facebook account is a very useful tool for hackers due to the fact that they can gain a lot of information if they have access to your account, for example, they can access your personal information, name, address, details of all your close friends, family and so on, in order to use it and achieve their desired results.It is also possible for hackers to use your account to send malicious programs to other users, which can ultimately damage your Facebook account , in this article, we are going to give a brief explanation of how a Facebook account can be hacked by hackers.
How do hackers hack Facebook?
Hackers use different methods to hack Facebook, some of which we are going to mention in the following.
- Hack Facebook via email:
If hackers can access your email, they can eventually access everything associated with that ID and get all your information, you’ve probably noticed by now that people leave their email addresses visible on their Facebook profiles, and if their email is not very secure, hackers can easily use this email in order to have access to their account, in this hacking method, the best solution that exists, and you can use it to keep your account safe from hackers is not to show your email address in your Facebook profile, and you should also use strong and safe passwords for your email.
- Having your login information to Facebook:
Some Facebook users may write down the password and other information they need in order to log in to their account, now imagine that someone with malicious intent has access to this information, what do you think is going to happen?This can endanger your website and the information it contains, so the hackers can gain your information, and they can also have access to your website whenever they want, we are sure that people's account security is important to them, so our suggestion is that they should never write down the passwords of their accounts, as well as other information needed in order to log in to that account, and they should not even save the information on a computer which is accessible to the public.
because it can easily attract users or make things easier and more attractive. List view is also one of the elements that is used to list or summarize the items in the application . In this article, we will explain how to create a view list and make related settings.
What is ListView?
ListView is a widget that displays a list of items in the application. In other words, ListView is used to list items in the application. The list that is created and includes the items of the application can be scrolled and there is no limit to the number of items that are in the list. ListViews include a list of mobile contacts, a list of emails, or a list of cities with their weather information.It is possible to customize, create and apply custom changes in ListView, and all items can be placed from the simplest state in the form of text to the most complex state in the form of images, links, etc.
In this tutorial you will learn that:
- How to create a ListView in Xamarin.Forms using the XAML file?
- How to put data in ListViews?
- How to respond to items inside ListView?
- How to change the appearance of cells in ListView?
Learn how to create a ListView in Xamarin.Forms using Visual Studio
The requirements for doing this training are as follows:- Install the latest version of Visual Studio 2019 on the system
- Install the latest version of Mobile development with .NET on the system1- Open Visual Studio 2- After opening Visual Studio, you need to create a new black Xamarin.Forms app.
3- Choose a name to create. The name chosen in this article is ListViewTutorial.
Note:
It is best to be careful in choosing names for projects and classes created.
Note:
The name selected for the project must be the same as the name chosen for the solution, so choose the solution name ListViewTutorial as well.- After naming, you must make sure that the system and application support the .NET Standard mechanism for shared code.This mechanism is used to share code written in Xamarin.Forms with the C # programming language. If your system and app do not support this mechanism, it cannot have multiple outputs on multiple platforms at once. So that you can have multiple outputs on several different platforms at the same time.- Click on MainPage.xaml in the Solution Explorer section of the ListViewTutorial project and replace the code below with all the code in that section.
This tutorial includes how to create a Label in Xamarin and edit its appearance. If you want to know how to create a Label, it is recommended that you follow this tutorial.
In this section you will learn the following and you can do them easily:
- Create a Label in Xamarin.Forms
- Change the appearance of the label
- Insert Labels in different formats
What is a label?
Label is literally a word used to describe or identify an object and its content.Labels in the field of programming are the characters that specify a place in the source code. The identifier of this type of label is Cullen.Learn how to create a Label in Xamarin.Forms using Visual Studio
The requirements for creating and creating a label are as follows:
- Install the latest version of Visual Studio 2019
2- Create a new black Xamarin.Forms app . In this tutorial, we named it LabelTutorial.
3- It is better that the name of the solution is the same as the name of the project. Also call the solution LabelTutorial.
4- In order to get output from different platforms with one programming, you must make sure that it supports the .NET Standard mechanism for code sharing.
5- In the Solution Explorer section of the LabelTutorial project, click on the MainPage.xaml file and replace the code in that file with the code inserted below.
<! -? xml version = "1.0" encoding = "utf-8"? ->
<contentpage xmlns = "http://xamarin.com/schemas/2014/forms" xmlns: x = "http://schemas.microsoft.com/winfx/2009/xaml" x: class = "LabelTutorial.MainPage">
<stacklayout margin = "20,35,20,20">
<label text = "Welcome to Xamarin.Forms!" horizontaloptions = "Center">
</label> </stacklayout>
</contentpage>This code actually defines a UI for the page and the UI contains a Label. The Label.Txt attribute is not the text that is to be inserted into the Label. The HorizontalOptions feature specifies that the Label is placed horizontally.- You can run the program by pressing the Start button or Ctrl + F5 key combination and see the result in the simulators.
Learn how to change the appearance of Label in Xamarin.Forms using Visual Studio
Label.TextDecorations attribute:
By setting and setting the Label.TextDecorations attribute, you can apply embellishments and changes to the text that will be placed inside the Label.
Appearance changes such as:
- None
- Underline
- StrikethroughFor example, the following code shows how to set and set the Label.TextDecorations attribute in the XAML file:
They design notifications to remind users of important things so that users can be informed of important things. Notifications can also include text, titles, buttons, styles, images, or icons. There are different types of notifications , which we will discuss in this section of educational articles.Notifications are in fact the notification windows that inform users of important things. It should be noted that notifications are initially displayed as icons in the Status Bar that if the user pulls the bar down and Notification Drawer opens the notification will be displayed in full. Notifications can be generated and displayed during the day, so there is no need to run the program, and even if the program is not running, the relevant notification will appear. It should be noted that even notifications can be displayed on the lock screen and can be displayed from there.As mentioned, there are different types of notifications and they can be created using different methods. Some of them can be simple or complex, with images, icons, text, title, buttons, and so on. For example, we can use PendingIntent to define an operation that can be performed by the user after touching the notification.1- We create a new project in Android Studio with the desired name Notification.2- The activity used in this project is better to be selected as Empty Activity.3- Add a Button to the activity_main.xml file.
Note:
Layers have been changed to LinearLayout for easy management.
simpleButton.setOnClickListener (new View.OnClickListener () { @Override public void onClick (View view) { simpleNotification (); } });
}
public void simpleNotification () {
NotificationCompat.Builder sNotifBuilder = new NotificationCompat.Builder (this) . setSmallIcon (R. drawable. notif_icon) . setContentTitle ("Update") . setContentText ("A new version of the application is ready to download");
notifManager.notify (1, sNotifBuilder.build ());
}
} By inserting the above code into the MainActivity class, we create a Button called simpleButton and an object from the NotificationManager method called notifManager. Then we define these two in onCreate.
Organizations and various users, use antivirus software programs in order to increase the security of their system as well as their information, and they may prefer the free or paid versions according to their budget, it is obvious that paid antivirus software programs provide more features to users than free ones, by enabling them to manage the security of their systems at a higher level, however, there are many free antivirus software programs which can compete with paid ones, including Avast Free Antivirus , Panda Free Antivirus, Kaspersky Basic Security, etc., all of which can withstand various threats with great resistance and prevent the entry of different types of viruses.In addition to the antivirus software programs which were mentioned above, you may want to choose McAfee which was founded in 1987, so we intend to mention this antivirus in more detail and the reasons why McAfee has no fans today, this antivirus software program has a long history and was very popular in the beginning, but today it has lost its popularity among users, we will continue to examine the features of this antivirus to reach a conclusion about the reasons why this antivirus loses its popularity these days.
People hate McAfee antivirus software:
Lots of different users hate McAfee antivirus and the reason is that it is not user-friendly at all, which has caused users to lose their interest and trust in this antivirus more and more despite the high level of security it provides, now we are going to explain the security features which it provides to you in the following.
McAfee antivirus features:
- Safety which McAfee provides:
This antivirus is one of the best ones available in order to deal with various threats, in simple terms, anything you need to secure your system can be provided by McAfee, this system is very complex and so powerful at the same time, it can protect the data in the best possible way and provides a high level of security for the system as well as allowing the user to continue its activities in a safe environment.
- McAfee’s QuickClean:
In this section, McAfee examines all empty spaces as well as cookies and temporary files, in fact, it handles everything in the best possible way, it can report cookies to you, as well as some files which you don’t need them, and you can continue your activity without them, once it gives you a list of all the items which can be deleted, you have to take action and delete them as soon as possible.It should be noted that profiteers who want to attack your system can also use this feature of McAfee antivirus in order to gain important information due to the fact that it is accessible to hackers, so it helps them in this regard and cause them to hack the system as soon as possible, as a result, you need to delete the entire list quickly, to do this, you can use another feature of this antivirus, which is called McAfee's Shredder tool, so we are going to give a brief explanation about this feature in the following.
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