Users are more affected by graphical user interfaces because it is both more attractive and saves them from having to go through difficult processes. In other words, graphical user interfaces turn the task of writing complex code into the push of a few buttons. Therefore, buttons play an important and effective role in applications and are used to do things easily. In this part of the tutorial, we will tell you how to create a button in designing and building applications .
What is a Button?
Button Reject GUI design field is any type of widget that is provided to users to perform events in a simple way. Buttons are also called command buttons because they perform user commands for certain events.For example, pressing the Save button in some of the notifications that appear will save the files in a specified path. Or OK can be used to confirm the contents or close some windows.Buttons are usually or often in the form of rectangles that are smaller in width than length and are used to perform user commands in a simple way. According to the text that is written on the button, users can identify the operation that each button performs and select and click the appropriate button to do their work based on their needs. Therefore, there may be several buttons in a window and each of them is used to do different things, users can understand the meaning according to the text written on each button and press the appropriate button.The text that is written on each button is called Caption. When inserting a caption, be careful to write it related to the type of activity that the button performs.
Buttons can have different modes, and the user can do the following methods to perform the desired operation through the buttons:
- They can click on the available buttons.
- On touch screens, touch the buttons.
- If the buttons are in focus mode, press the Enter or Space bar arrow keys.
- Use shortcuts. This is the case when shortcuts are defined for buttons.
In this tutorial you will learn:
- How to create a Button in Xamarin.Forms using the XAML file?
- How to respond to the pressing of buttons?
- How to change the appearance of Button and create a graphical user interface for it?
Top 15 sports games on Google play and Apple app store?
1. Golf King - World Tour
One of the Top 15 sports games is this game. One of the attractions of this game compared to similar cases, which has made it one of the best sports games of 2020, is the multiplicity of golf courses. They are elegant, beautiful, and designed with a lot of details and make you enjoy watching the scenery around the characters in the game. Of course, regardless of the type of land, the goal is the same; You must throw the ball into the target hole. You can change the shape and image of the character to your liking and wear the clothes you want.
2. Champion of The Fields
This game's graphic is unparalleled, and its detailed and accurate gameplay allows you to implement your strategies on the ground without mistakes. You will also see some familiar names in the game, but do not expect FIFA quality. In Champion of The Fields, the skill of the players is so important. Yes, good players will be your savior in moments and a strong team will increase your chances of winning, but if you are not smart enough and do not have enough skills, it will be nothing but a failure of your income, so practice.
3. Table Football, Soccer 3D
If you are interested in table Football, then be happy that from now on, another of the best Android football games will always be in your pocket. Table football is a three-dimensional football. The game's graphics are high and you can enjoy scoring goals in this game anywhere and in any situation.
4. Grand Mountain Adventure
Grand Mountain Adventure has great gameplay and character control is very comfortable and attractive. Challenge lovers enter professional competitions and force themselves to collect more points by crossing flags. Other users will remove the restrictions and enjoy mountain skiing.
5. Score! Hero
This game leaves out the boring parts of football and focuses on the moments that matter most: the goal position. There are more than 700 different challenges in the game and you will be in different situations and you will have to do many impossible things. What makes this game attractive is that the goals are the result of your accuracy and skills, and when you score a goal, you will feel deep satisfaction.
6. F1 Mobile Racing
F1 Mobile Racing is the best option to experience Formula 1 gaming on your mobile phone. There are numerous teams, pitches, and players, although they are based on the 2019 F1 Championship and have not yet been updated.
7. Head Soccer LaLiga
Head Soccer La Liga is another of the best football games on iOS and Android that shows Spanish football. This game is arcade-style and very fun. Two players (or one player against AI) face each other in one-on-one matches. This game is a bit like ping pong but in a more attractive model!
In order for the operating system to support these fonts and show exactly what is in the application , it is necessary to apply special settings to support the fonts in the application. In this tutorial, we will teach you how to apply settings to the operating system to support application fonts. If you want to know about them, follow this tutorial.
The ways to use fonts in operating systems and applications are as follows:
1- One way to use fonts and display them is to package all fonts as the source of Android 2- and put them in the application and operating system. In this case, it is clear that all fonts are always present in the Android operating system, and when needed, you can refer to its source. Packing fonts and placing them on the Android source allows us to access the fonts at all times.3- The second way to use fonts is to download fonts. In this case, the Android operating system also supports the download of fonts, so that if necessary, we download the relevant font and save it inside the Android operating system. Fonts are downloaded by the font provider and the font provider checks to see if the corresponding font is present within the operating system. If there is no relevant font, the font provider will download it and save it inside the Android operating system.It should be noted that all fonts that are similar or similar and have the same style are classified in one group. Fonts that have the same style and are similar to each other are grouped into groups such as font families. Users must consider unique specifications in order to use these similar fonts. In this way, they can choose their unique names or specify their characteristics. Android Support Library v26 uses API level 26 to support and use fonts. If we consider APIs whose level is less than 26, then we have to specify android: namespace and app: namespace for them. If we do not specify android: namespace and app : namespace for them and consider only android: namespace, they may not be displayed on lower than 26 operating systems. So in order for all fonts to be displayed with an API level less than 26, both android: namespace and app: namespace must be specified, otherwise if not specified, both fonts will not be displayed. APIs with a level below 26 do not support fonts and must be set to android: namespace and app: namespace in order to be displayed.
Hackers are people who have a lot of intelligence in various fields, especially the computer world, and you have definitely heard the names of some of the biggest hackers in the world in the news, so it’s not hard to guess that how dangerous hackers can be, in general, hackers are in different categories, and each has its own characteristics, among them, black hat hackers are people who infiltrate your system with malicious intent and may manipulate or delete information in your system, or they may steal your information and ask you to pay a lot of money in order to return your information, large government agencies are always concerned about black hat hackers attacking their systems and stealing their information, which is why everyone, even beginners, need to know more about these people, if you try to know their characteristics, you can deal with them properly in the case of danger, and increase the security of your personal and important information.
Who are black hat hackers?
Black hat hackers are people who use their talents and knowledge to achieve their own immoral goals, they enter the system through security holes and do destructive things to it, these people are exactly the opposite of white hat hackers, they may use viruses to infiltrate people's systems, then enter the virus into the system and achieve all their goals by importing the virus, if the security of your system is not high enough and your system has security holes, they will get help from all these cases and enter your system, so that they can access your important information, such as credit card number, important documents, etc., and ultimately harm your system, by having this important information.In contrast to black hat hackers, as mentioned earlier, there are white hat hackers whose whole effort is to help various organizations and systems to make the efforts of black hat hackers ineffective and fail to achieve their goal, black hat hackers may hack different people just in order to get excitement in their life, or they may be looking for specific information in different people's systems, and other goals that all ultimately lead to a danger for the security of a system and the information contained in it.
Hacking is a money-making business:
The number of hackers is increasing day by day, and one of main the reasons that can be mentioned is that, it is considered as one of the ways that people can earn a lot of money through it, and they know the fact that, if they want to earn more money, they have to increase their knowledge in this field, each hacker uses different methods to achieve their desires, for example, some of them try to create malicious software that users will encounter an infected system after using this software , and may even lose all the information in their system quickly, or they may create malicious links that people lose their information with just one click, and other various methods that black hat hackers use with great skill in order to achieve their goals.
What is the best gaming phone of 2020 and what are its technical specifications?
Gaming mobiles are one of the most popular gaming tools today that have attracted a lot of people's attention. These phones have compatible features that make them very suitable for gaming . Many different brands around the world produce these mobile phones and have been able to attract a lot of people. These phones, like any other structure, have different qualities. In this article, we want to name some examples of the best gaming mobile phones that were produced in the year 2020. If you are also curious to know these phones and want to get interesting information about hardware and how they work, follow us to the end of this article. We try to provide you with more information about this mobile phone so that you can buy these mobile phones with a more open mind and enjoy playing with them as much as you can.
Razer Phone 2
The first best gaming phone of 2020 is this one. In appearance, the Razer Phone 2 is quite similar to its predecessor (which in turn was very similar to the Nextbit Robin smartphone). Measuring 8.5 x 78.99 x 158.5 mm, it is slightly wider and thicker than the previous model, but the difference is so small that it is practically impossible to distinguish between the two. The relatively large bezels, powerful speakers at the top and bottom of the display, and the power button on the edge of the phone (with a fingerprint sensor built into it) are all reminiscent of the previous Razer products. The selected color can be displayed on the logo in three different modes: Respiratory mode (which raises and lowers the brightness), Static mode (which keeps the amount of light constant at a certain degree of brightness), and Spectrum cycle mode (Which displays all colors alternately on the logo). Of course, you may not like this lighting due to battery consumption. In this case, the Chroma app allows you to turn off the lighting completely or select only the low-power mode. In this case, the logo will only be lit when the screen is on. It should be noted that this idea of Razer is unique and has never been seen before in the world of smartphones. Not to mention that despite some display advantages over other competitors, the Razer Phone 2 still uses LCD panels (with Sharp IGZO technology) instead of LED displays. You may decide to use an LCD for a higher refresh rate, but on the other hand, LCD panels often make the phone a little thicker and usually cannot display the colors with the quality seen in LED displays. Razer used the Snapdragon 845 8-core chip (with a maximum clock speed of 2.8 GHz and Adreno 630 GPU) to prove that the Razer Phone 2 is no less than the famous flagships.
One Plus 8 and One Plus 8 Pro
The One Plus 8 and 8 One Plus 8 Pro both have the same features like a Snapdragon 865 processor, Adreno 650 GPU, 128GB and 256GB of internal storage, 8GB and 12GB of RAM. Both phones have almost the same hardware and are not so different and only have differences in their screen, camera, and battery. The OnePlus 8 has a 6.55-inch display and the OnePlus 8 Pro has a 6.78-inch display. Both screens are AMOLED , with the difference that the OnePlus 8 has a refresh rate of 90 Hz and the OnePlus 8 Pro has120 Hz. OnePlus' latest flagships have powerful batteries with very high charging speeds. The company for the OnePlus 8 uses a battery with a capacity of 4300 MAH with a charging speed of 30 watts, which can increase its charge from 0 to 50% in 22 minutes. But the OnePlus 8 Pro has a 4510 MAH battery and can be charged with a 30-watt fast charge, which is suitable for a gaming phone.
In general, hackers are like ordinary people, and the only difference between them and other people are their computer intelligence, they may use this intelligence to implement legal actions, or they may prefer to use it to do some illegal actions like stealing information from other systems, which choosing each one depends on their personality, due to the increasing number of hackers who have destructive goals in mind and the ones who cause serious damage to various systems, the existence of white hat hackers has become necessary, these people use their science and knowledge to deal with other types of hackers.In fact, in order to stop black hat hackers and the other types of it, you need to get help from people who are familiar with their techniques, personality, and methods of work, certainly, no one has more control over all of these issues than a white hat hacker, in the rest of this article, we are going to explain white hat hackers more.
What is a white hat hacker?
White hat hackers are people who use their knowledge to rule and deal with other hackers, in fact they are actively looking for vulnerabilities in a security system, so that they can identify them before they are identified by others, and inform the organizations to eliminate all the existing weaknesses quickly.In fact, all the talent of these people is used to improve cybersecurity, and they are aware of all the techniques used by black hat hackers and try their best to prevent their intrusion into security systems.White hat hackers in large organizations have high-paying jobs, and in return for the money they earn, they guarantee finding all the holes and bugs in the system faster than black hat hackers, they may have some jobs such as cybersecurity analyst, IT security engineer , network security analyst, intrusion detection analyst, and IT security manager, the organization may also give these individuals the responsibility to provide training to other employees in the organization in order to increase site security .
What does a white hat hacker do?
In the previous section, we have mentioned a number of responsibilities of white hat hackers , in this section we will go into more detail about their responsibilities, white hat hackers put themselves in the place of black hat hackers and look at the entire security system from their point of view, and finally come to the conclusion on how they can infiltrate the system and report all their actions to the organization in order to fix them if there is a security hole.As you know, hackers use social engineering methods to crack down on security systems, finally, white hat hackers gather all the important information through social engineering, so that they can access information that is effective in enhancing system security, another thing that white hat hackers do is sniffing, through which they can find all the gaps in the network.
Casinos have been one of the most popular and entertaining industries for the last hundred years. The casino has a very happy and exciting environment where many people can earn millions. Many people from all over the world are interested in gathering in casinos and winning with a spirit of risk-taking and a little bit of luck, and earning millions. This issue and the popularity and pervasiveness of casino games have led game developers to consider transferring their casino environment to mobile applications so that more people around the world can access these services. We are going to introduce some of this kind of games to you. If you are also curious to know these games and get a lot of information about them, follow us to the end of the article. In general, Google Play will not allow you to gamble and bet, and the games in this application are for entertainment only, and you cannot gamble inside the game. Here are some of the most popular games
1. Twenty-five in one casino
This game is a very popular game in which you can play various types of games in casino such as video poker, roulette, and other popular games that are among the casino type of games. You can bet on sports games in this program. This is a great option for you and allows you to play with people you are interested in. In this game, different advertisements are displayed that can be a little annoying, but other than these cases, this game is very popular and suitable.
2. Big Fish Games
Another popular casino game is this game developed by Google . This game has different types of games and is very diverse. The strategy in this game is completely offensive and this game requires you to buy tokens frequently. These tokens will help you to play a more exciting game. This game has disadvantages and has different drawbacks, but in general, it will transfer a proportionate experience to you. Also, this game has tried a bit to reduce the casino mood in the game space, but anyway, this game is exciting.
3. Casino Frenzy
One of the casino type games is Casino Frenzy , which is a bit more common than other games. This game is a combination of slots as well as video poker, which brings a lot of excitement. This game, like many other games, has different types of different slots and video poker games. This game has many benefits and also has hourly rewards for you. This game is designed and produced to a large extent according to the rules of games of casino and will immerse you more in the casino space. This program can sometimes have various bugs, but if you are interested in these kinds of games, this game can be useful for you.
4. GNS Grand Casino
This game is a versatile game that includes almost all casino games. In this game, you can experience a lot of excitement. This game contains very big victories and it is very easy to play in it. In this game, daily prizes are provided for you and a lot of excitement will be transferred to you while playing. This game is designed for Android and you can download this game for free and enjoy playing in it.
Gaming has become one of the most popular pastimes today that has attracted many people from all over the world. Gamers are usually very interested in buying high-quality tech gadgets . We are going to talk to you about these tools and tell you what tools a gamer needs to improve the gaming situation. It is interesting to know that today, due to the popularity of these tools, their prices are increasing day by day. Designers and manufacturers of these products also try to satisfy the expectations of gamers by improving the quality of products. In addition to their very great, these tools have an extraordinary and exciting beauty that can multiply the appeal of the game for the players. We will introduce you to the best safety tools and tell you what the features of a gaming tool are and so that you can buy these tools easily. If you are planning to use gaming as a way to earn money, try to use the highest quality tools so that you can be successful in earning the money you want. Tools will have a great impact on improving the quality of your gaming, so try to take the right tools seriously.
Buy a gaming case
One of the most exciting and vital tools that can make a gamer more attractive and of high quality is to buy a suitable system and case. Many different brands today try to produce gaming systems and cases. In addition to paying attention to quality, these designers try to consider beauty in their work. Game Cases are usually very beautiful and exciting that in addition to high quality, also have an eye-catching appearance and make the gamer trend much more exciting for players. The case that you prepare for gaming should have very advanced processors and high graphics memory. The processor is vital to open games more easily and the graphics memory to display high-quality game scenes easily. Note that the price of a case is very diverse and different that you can buy a suitable gaming case for yourself according to the budget you have and according to your purpose. Note that the SSD storage space is very important for these cases because it prevents the case from being hung. In addition to these issues, the high memory of the case is also very important.
Gaming table and chair
Another tool that is very effective and vital in gaming is the table and chair for gaming. These devices are considered as decoration and in addition to beauty, make gaming easier for players. A gamer sits behind the system for very long hours during the day and plays games, so buying a suitable table and chairs can help the gamer not to feel any pain during these long hours and suffer from fatigue. If a gamer thinks about his health, he should use a suitable seat in his chair so that he can play and enjoy it easily. The gaming table will not have much effect on people's health, it is only better that you pay attention to its height when buying it and use a table with a suitable height. You can also decorate your desk to suit your taste. You can use other tools with a little expense such as different lighting to enhance the excitement and play for yourself. There are many different seats for gamers that specialize in gaming. You can use any of these chairs that are made today so that you can enjoy playing and spend many hours behind your monitor without any problem.
Nowadays, children have devices which give the opportunity of accessing the Internet through them, some of which are severely addicted to the Internet, and if they stay away from the Internet just for one day, they will become nervous and aggressive, today’s children can enter a world that may seem strange and fascinating to them at first, but this fascinating world may cause great harm to children in the future.Naturally, providing security for any space in which children prefer to stay there for a long time is one of the main concerns of parents, and in this article, all our efforts are to help you in this direction in order to express to you the points that you can protect your children from any danger on the Internet by observing them.Before going into the details of what parents can do to provide a safe environment for their children on the Internet, it is important to note that the basic need is that you should improve your acknowledgement as the Internet progresses, in order to be able to recognize all the dangers that may threaten your child and be able to prevent future problems with full awareness, many children, may encounter some contents which isn’t appropriate for their age range while working with the Internet, and this causes children to enter the adult world unintentionally and quickly, which is a point that should definitely be considered as a huge problem and you as a parent should prevent such incidents from happening by feeling responsible, in this article we will mention some important ways to keep your children safe online.The Internet is a world where you do not need to spend a lot of time and money to go to different parts of it, and with just one click you can go to all parts of the world and meet different people, which is definitely one of the best facilities available to human beings, but if children provide with this big world without the parents' awareness of the dangers it poses to children, it can become a big problem for children as well as their parents.
How to protect your children on the Internet?
- Limit children's time on the Internet:
You need to teach your children that using any device should have a time limit and that they should not waste their time doing things that do not benefit them, and remind them that they can take advantages of the Internet too, children may want to spend a lot of time on the Internet, then you can use the features on the devices and active its time limitation program which reminds them of the point that they have a limited time to use that device, so that children cannot ignore your rules. It should be noted that you should have patience to teach all these things to children slowly which makes them learn everything over time, so that they also respect your rules.
- Monitor your children's behavior on the Internet:
After a while, children may ask you to create a separate account for themselves on the Internet to be able to operate in a more private environment, in this case the best thing you can do, is to create that account for them but ask them for its password because it gives you the opportunity to have more control over their activities on the Internet, and if something goes wrong, you can fix things as quickly as possible.It should be noted that you should never do this without the permission of the children and ask the children themselves to give you the password in order to provide them with more safety , if you encounter a problem that your children cause or if you recognize the access of a hacker to your child’s system, you have to talk to your child immediately and warn him/her about the dangers that may occur if she/he continues to work with it.
Hackers can access the information as well as the system of different users through many ways and steal their information or damage their system, and this choice depends on the hackers, and they tend to choose one of the types of hacking methods according to their purpose in order to penetrate the systems, on the other hand, users are trying to increase the security of their system as much as possible to block the way for hackers, one of the steps that they should take, is trying to study articles which are related to security and hacking issues in order to gain mastery and increase awareness in this regard, in this article, we are going to review SQL injection and tell you the important points related to this subject.
What is SQL injection?
Through this attack, hackers can retrieve data which is not visible to the user, and use it in order to achieve their goals, this type of attack is one of the most common ones among hackers, and they use this type of attack to cause a lot of disruption in the users' system, they can even access users’ information and modify or delete it through this way, there have been many reports to date about damage to various systems through this method, and sometimes hackers use it in order to hack web servers as well, in this method, hackers insert a malicious code into the SQL statement through web page input.
Is SQL injection illegal?
In general, any way in which different people can access the users’ information without their permission is illegal, and those who do so will be punished, in this type of attack, if the hackers can carry out the attack completely, they can access a lot of personal information, for instance, bank card information, important personal information, etc., all of which can make a lot of money for hackers, on the other hand, they will compromise user security, the interesting thing about this type of attack is that the users may not be aware of the fact that they have been hacked for a long time, and as a result, during this time, the hacker can continue to steal their important data, as well as accessing more important information day by day, this kind of hacking attack and has different types, among which, the following can be mentioned.
Examples of SQL injection:
- Retrieving hidden data:
Through this way, it is possible for the hacker to access a lot of information which the site owner did not want to share it with applicants, for example, imagine that you enter a site in order to buy a product, and different lists are displayed on the website, in this section, hackers enter a command asking the website to provide more information about the products which are not included in it.
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