The APK file with which we install games is packaged and extractable if necessary. This is very convenient, since already installed applications can be extracted into one file.
Often there are situations when, for example, you have completed the game and deleted it from your mobile device. But after a while they decided to play again. In order not to start the passage from scratch, it is enough to extract the ARC and use it when necessary. The entire process will be restored.
Extracting the APK comes in very handy when you need a Bluetooth friend. In order not to install a special program, you can use the method that will be given below.
Extraction of APK from installed applications is carried out using special software. A convenient file manager is perfect for this. Astro File Manager.
The file manager will help you manage the backup of the programs available on the device, view videos and images, and the task manager. To easily extract the installation ARC, you will need:
1. For Astro File Manager to function, you will need to install it on your device, for which you will need to look at Google Play. After the installation process is complete, you can get to work.
2. Launch Astro File Manager. A window will open on the screen indicating the available memory drives and a list of services in which you can register or log in.
3. Swipe to the left will open the main menu of the application. At the bottom left, click on the tool icon and go to Application Manager.
4. You will see a list with all installed programs and games.
5. To extract the ARC, press the special button located in the upper right corner. From the proposed options, select BACKUP. For clarity, I do this operation with .
Now you just need to wait for the process to finish. All resulting files will be located in the Backups - Apps folder. They are just as easy to install as regular APK files.
One of the popular applications of this type. Allows you to extract the installation file directly from the official store and save it to your PC. At the same time, the program can not even be installed on a PC - a portable version is available that fully works from external drives. When starting Raccoon for the first time, the user needs to enter their Google account credentials. The device ID is also requested, but this parameter can be ignored.
The application interface consists of two tabs: Download and Search. When searching, you can use the name, ID or link in the official directory. Having found the application, you can save it on your PC as a regular file, and then manually install it on another mobile device.
A popular alternative directory for Android, which presents products from various developers. The catalog client is small in size, which makes it suitable for use on low-end devices. All programs are sorted into categories, there is a convenient search, and the applications themselves can be downloaded as files.
And in order to quickly clean the phone from debris, you can always use Clean master. Don't know what it is? .
APK Downloader
Extension for Chrome and Firefox browsers. It also allows you to quickly download the selected utility as a separate file. After activating the plugin, just go to the page of the desired program on Google Play and use the F5 key. The page refreshes and displays the download button for the corresponding object.
other methods
There are also ways to download apk files without installing third-party software. For example, instead of the APK Downloader plugin, you can use the online service of the same name. It is enough to open the resource, insert a link to the program into a special form and get a button, the activation of which initiates the download.
Another way: open the desired page on Google Play and manually change play.google.com to apk-dl.com in the address bar of the browser (leave the rest of the address). After refreshing the page, the user gets the opportunity to download the selected file.
Many of you know that the process of installing an Android application is simple - you open the Google Play store, find the desired program or game, click on the big "Install" button and that's it. However, Android apps come in packages that are also installed manually. These packages have the ".apk" extension and their practical applications are numerous. For example, you can easily backup applications that are also stored as apk files. This will even help you if suddenly an application or game disappears from Google Play, as it did with Flappy Bird. If desired, anyone can download the application and install it on their smartphone. It is also convenient to install apk files on devices that are artificially limited by the manufacturer (Amazon Kindle Fire or Nokia X).
However, how can I extract the installed apk file? You can easily find the application on the Internet, download and install it on your Android device. This method works great with free apps. Paid ones are protected from downloading for obvious reasons. Also, apps that download additional files after they've been installed should work just fine.
- 1. On your Android device, Google Play and download the app you want to extract.
- 2. Download the APK Extractor app. This is a free and easy to use app.
- 3. Open the APK Extractor app and point to any app you want to extract. You can mark several applications at once. The APK files will be saved in the ExtractedApks folder in the device's memory.
The extracted APK files can now be copied to another Android smartphone or tablet and installed using any file manager such as Astro or ES File Explorer.
Hello readers of our site. Once one of the visitors asked for help, he needed to extract APK files from an Android smartphone. Thus, we decided to describe the answer to this question in this article. Using this operation, you can make a backup of all installed applications on a smartphone, tablet or other gadgets that are running the Android operating system.
In what cases is a backup of installed applications made?
Situation one. You need to reset your phone to factory settings, but there is no Internet access or only mobile. You don't feel like downloading apps from Google Play again later, because it will take a long time. It is for such cases that it is possible to extract APK files from an Android device or .
Situation two. You have an exciting game installed, the cache of which "weighs" a lot, and your friend liked it, and he wanted the same toy for himself, but, again, there is no access to the Internet. Here you will have to make a backup of the installed game. Instructions for the correct installation of games with a cache can be found.
There are many such situations.
How to extract APK files from Android device?
To accomplish this task, we need a free application "ES File Explorer", which can be found on Google Play. Why this conductor? It's simple, it's a great and easy-to-use file manager and it already has an integrated app backup feature. With this function, you can extract the necessary APK files from Android devices.
Method 1. So, you have installed "ES Explorer", now run it:
Picture 1
We go to the application menu for this, press the button indicated by us in the upper left corner of the device screen. Expand the Libraries section and click APPs.
Figure 2
If you did everything correctly, a window with installed user applications will open in front of you. Next, select the application you want to extract and press the button Reserve at the bottom of the screen.
Figure 3 Figure 4
All extracted apps are in the folder « Phone memory/backups/apps". You may have noticed that in Figure 3 and 4, some files are highlighted in red or green, and so: applications that were backed up earlier and are located in the folder are marked in green. apps , and in red - applications that were also extracted earlier but removed from the folder apps (removed only the extracted files, not the installed ones). That's basically all that concerns extraction in this way.
Figure 5
Now you can do anything with these files: transfer them to your computer, send them to a friend via Bluetooth or email. Let us remind you once again that this method backs up only those applications that have been installed by the user, but not system ones. To back up system applications, use method 2.
Method 2. We launch the same "ES Explorer". At the top of the screen there is a choice of memory sections (Figure 6) or go to the "Local storage" menu (Figure 7) and select the item /Device .
Figure 6 Figure 7
Next, you need to go to system/app . Here are all the applications that are installed on the device: both user and system. Then we look for the desired APK file and copy it to the desired folder. Thus, you will receive a ready-made APK file for installation on other gadgets.
Warning! For both methods, you may have to. It is possible that some extracted system APK files may not install on other Android devices due to the fact that they are designed for a specific firmware.
That's all.
We hope that this post helped you solve your problem and that you were able to extract the APK files from your Android device. If you know other ways to reserve programs or if you have similar questions, please contact us.
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Interpolation, interpolation- in computational mathematics, a method for finding intermediate values of a quantity from an existing discrete set of known values.
Many of those who deal with scientific and engineering calculations often have to work with sets of values obtained empirically or by random sampling. As a rule, on the basis of these sets, it is required to construct a function on which other obtained values could fall with high accuracy. Such a task is called approximation. Interpolation is a type of approximation in which the curve of the constructed function passes exactly through the available data points.
There are many finite difference interpolation methods. Most
common is Newton's method for "forward" interpolation (the Newton-Gregory method). The interpolation polynomial in this case has the form:
The coefficients C are found by the formula:
Program implementation in C#:
using System; namespace Interpolation( class Program…
The program is divided into two threads, one of which performs sorting, and the other redraws the graphical interface. After pressing the "Sort" button, the "RunSorting" method is called in the program, in which the sorting algorithm is determined and a new thread is created with the sorting process running in it.
private void RunSo...
Today I want to show my Kacher, which I did during the last winter holidays. I will not describe the entire manufacturing process, since there are many articles on the Internet. I will write only about its main parameters.
Below are some photos taken during the assembly of the device.
The coil is wound with a wire of 0.08 mm approximately 2000 turns on a PVC pipe with a diameter of 50 mm and a height of 200 mm.
The platter from an old hard drive was used as a terminal. Everything else was assembled according to the scheme that is located at the very bottom of the page.
The first option was powered by an old computer power supply, 12 V. Then a separate power supply was made, 30 V and with built-in cooling.
Device Diagram:
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