By using and learning open source applications, you can learn how to create good apps on one's own.
Listed below best projects for Android open source. Thanks to them, you can learn a lot of great practices for Android development.
1. Android application with MVP architecture
MVP using .
2. Android application with MVVM architecture
This repository contains an application that implements the architecture MVVM using Dagger2, GreenDao, RxJava2, Fast-Android-Networking and PlaceholderView.
3. Google I / O Android APP
Google I / O is a developer conference held every year. It features hundreds of technology demos from developers.
This project is an Android conference application. The app supports devices under Android 5.0+ and optimized for phones and tablets of all shapes and sizes.
4. Drawings of the architecture of Google Android
The Android platform has a lot of flexibility when organizing and archiving an application. This freedom can lead to applications with large classes. This can make it difficult to test, maintain, and expand.
Architecture Android Blueprint intended for demonstration possible ways help in solving these problems. This project shows the same application implemented many times using different architectural concepts and tools.
You can use these samples as a starting point to create own applications... The focus here is on code structure, architecture, testing. However, keep in mind that there are many ways to create applications with these architectures and tools. Focus on your own priorities and don't get too carried away with what might be considered canonical examples.
5. Telegram
An Android application that is able to inspire with its design, thanks to the excellent implementation of material design.
7. Wire
This chat app is full of pictures, movies, GIFs, music, sketches and other forms of multimedia. It also always provides secure end-to-end encryption.
8. Android application ribot
Kickstarter- it global community that helps to bring creative projects to life. Explore thousands of projects in art, design, film, games, music, and more.
10. PocketHub
GitHub refused to support the app, so it was released to the public and is maintained as a public project. Now the society is actively working on the republishing of this application in Play Store... This app will be the spiritual successor to the original app.
11. Simple Android Application with MVP
A very simple application showing how to implement the MVP architecture.
Instructions
Review source using its source. Original file contains the code written by the programmer when creating software, then it is compiled with special tools and turned into an installation file.
If you have lost the source file code, or it is not available to you for other reasons, use special decompilers. Disassembler programs are also available. Note that viewing the original code can often become impossible in cases where you do not know what programming language was used to develop it.
If you want to find the code free software, search the Internet with the corresponding request. Also try to download this program and in its menu find the item "View source code". This is usually available for redistributable programs.
Be careful when using them, in particular, this applies to programs downloaded not from the developer's site, since the source may contain malicious code which, when installed on your computer, also installs trojans, keyloggers etc.
Be careful when using decompiler programs, as many software developers use special programs that make it difficult to recreate the original code... If the program was written in assembly language, it is also accepted special programs.
Reverse funds software development quite a lot, do not use them for fraudulent purposes or to make changes to closed-source programs, since often certain liability is provided for these actions in accordance with the law.
Don't look at the code closed programs and even more so do not make changes to it.
The program code can be different in terms of privacy - many developers do not publish it in the public domain and the terms of the license agreement impose restrictions on users related to its use and viewing. There are also programs with open source, which can be viewed, edited and so on.
You will need
- - program for opening source code.
Instructions
Make sure the source code of the software you want to view is for open access... To do this, go to the official website of the software developer and view the license type. If the source code of the program is closed, you cannot view it. This is inconvenient, but with such a system, copies of a program containing Trojans and other malware... This is the main disadvantage of free software.
If you have free software, find the "Source Code" in the program menu, if such an item is provided by the developer, which is extremely rare. To view it in other cases, use an assembler or other third-party software.
Often, to open the source, you need to know which programming language the creators of the program used during development, which is often very difficult to determine. Here you can install on your computer the set various programs to open sources written in different languages.
When using free software, if you have the opportunity, review the source code before the installation process, especially if the program was loaded from unofficial source... This will help protect your computer from malware that is installed along with the main one.
Also do not resort to different methods making changes to the closed source code of the program, often in such cases certain liability for violation of the rules is provided license agreement between the user and the developer. Moreover, do not post edited programs of this kind on the Internet.
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Useful advice
Check the free software sources.
The ability to view the original code various sites can be very useful when self-creation site... You can see the HTML using special settings and additional extensions browser, as well as programs for viewing text files.
You will need
- - browser program;
- - a notepad program.
Instructions
Find the "Site source code" menu item in your browser. For example, in the program Mozilla Firefox it can be found in the "Web Development" section, which is located in the "Tools" item of the main menu, and in the browser Internet Explorer html-code viewing is called from the "View" item of the main menu. Go to the site whose code you would like to study. Once the page has loaded, select the Site Source tool. The program will display a special window in which you will see the code. If the page content is displayed incorrectly, try changing the encoding.
Standard functions browser can be extended with a plugin. Often on the site of the program developer, you can find an extension that allows you to view the site code. For example, the plugin for Mozilla Firefox is called Firebug, for Opera browser- DragonFly. Download and install the plugin. You may need to restart your browser. Then go to the desired site. Click on the button for calling the plug-in console - it can be located on one of the program's working panels, - after which it will appear additional window where the source code will be displayed open page.
Save the required website pages using the appropriate browser function. To do this, click on the main menu item "File" and select the inscription "Save as". Choose a location on your computer where you will save a copy of the page. Then, from the drop-down menu titled "Save as type", select either "Web Page, Entirely" or "Web Page, HTML Only." Click on "Save". Repeat the procedure with all the necessary pages of the Internet resource. Open the folder where the files were saved. Select one of the pages and run it using notepad. You can use the operating room Windows system utility "Notepad", but better download more convenient program Notepad ++. It has a split function different types html tags by color.
IMEI is an identification the code mobile phone... In case of theft or loss of your mobile phone, you can try to find it by this the code y, if you ask for help from the employees of the internal affairs bodies.
Instructions
Find out the IMEI of your phone by dialing the combination * # 06 #. In a moment, this the code... Thus, you can find out the IMEI of absolutely any cellular model phone.
Take the box from your phone and inspect it from all sides. The IMEI of a mobile phone is usually indicated near the bar the code a and has the form of a series of numbers or also a dash the code a. If there is a possibility that this box may fall into the hands of dishonest people, hide it away so that they cannot take advantage of your carelessness.
Review documents on your mobile device. They also usually list the IMEI. View the contract that you made out in the communication salon when buying phone... IMEI is listed on the same line as Model Name.
Unplug your phone, open it back cover and carefully remove the battery. Inside the case you will see a sticker with information about the manufacturer phone, model, as well as identification the code... However, on some phone models, IMEI may not be specified in the form of a long row of numbers, but only in the form of a bar the code a.
If you decide to buy a hand-held phone, ask the seller to provide you with all the documents on the mobile device and check the IMEI by dialing * # 06 # or opening the phone.
If your phone is stolen or lost, call your carrier first and block the number. After that, contact the police and provide the police officers with all the information you have about the time and place of the kidnapping or disappearance. But the most important thing that you must tell them is the identification the code your his mobile device.
If for some reason you could not find out IMEI phone, do not refer to Internet sites offering a variety of programs and services that supposedly can help you not only find out the code mobile phone, but also to unblock old sim card without PIN and PUK. It is impossible to do this without access to the databases of telecom operators. And telecom operators care about the security of the highest level.
You cannot view the key with which you activated your software. the usual way, such as, license code programs that are stored in the registry and can be accessed when it starts or using other programs. Based on the license code, you can view the activation code on the official website of the program developer.
You will need
- - program for viewing the license code.
Instructions
Download Everest program 2006 to your computer. Install it and run it. In the main window, select the software you are interested in, the license code of which you want to find out. The information you need should appear on the right side of the window. You can also save it to a file or print it. In any case, it is best not to store such information in in electronic format on either removable media that you are not going to format.
Look at the program license code on the disk if you bought it as a separate product from the computer, on the box from it, and so on. See also code info software product contained in the register operating system... To run it, open Run from the Start menu and type regedit in the box that appears.
Find the item responsible for the software in the directories on the left. Select the program you need, look through the folders for license information. Copy it.
Rewrite the license code obtained using one of the above methods. Go to the site of the software developer whose activation code you are interested in. Find the point for activating and registering programs, if available on the site. Enter the license code for your software product and see the available activation code for it. This method is often convenient when activation of a software product is available on the website.
If this activation method is not available for your program, find out the code when reinstalling. Remove it completely through the Add or Remove Programs item in the control panel and delete the activation record, after making sure that you have a license key. After installation, complete the activation by viewing the key that matches your license code. Rewrite it.
Useful advice
Always save the information necessary for activating the application in the future, so as not to go through the procedure for obtaining the key again.
Consider how to determine the original the code pages, because this parameter is very important when working on the Internet. If you need any news, tags or a picture, but you don’t know how to write it, you can always copy information from another site, having found out the original the code pages if he is not for the code created by the developers of the site. The original is important the code in paged files that are not programs using the original the code but you can work with pages and edit them.
You will need
- Instructions for viewing the source code of the page.
Instructions
To be visible, it is written with the original the code ohm. Pour it with the code ohm you can, if you are the owner of the resource, or change with notepad, editor, using for this special extensions... The user can also change the page by editing the file and adding his own to the page. In - browsers view source the code but is carried out with the help different teams, we will consider them in more detail.
For Internet Explorer, select the "View" tab, then "Source the code pages»Or the item can be selected by clicking on right button mice. To encrypted by developers the code in this we go to the "service" menu, then "developer tools", press the arrow, select required element on and the code become. Next, click on the icon and the code v text format and copy from its components to html.
Mozilla Browser Firefox provides the ability to view with a simple command "Ctrl + U" or in the "Tools" menu select the substring "view source the code". You can view encrypted information in Mozilla Firefox by installing a special Web Developer, choose from the menu “ the code"String" generated the code"And below pages the value of the original the code a. Copy the file to the clipboard or save it with the page.htm extension.
At using google Chrome in the main menu "tools" select the substring "view source the code", Then use the right mouse button to open the item" view the code a pages»Or using the" Ctrl + U "keys.
To find the original the code Opera in the menu "view" select "development tools" and in it the item "source the code pages»Or by using the" Ctrl + U "keyboard shortcut.
For Safari browser in the menu we find "view html- the code", Also by pressing the right mouse button, open the substring" view source "or use the keyboard shortcut" Ctrl + Alt + U ".
note
The ability to view encrypted information about the source code is carried out using two browsers.
Useful advice
If you are not a site developer, you can change the page only for your own use.
The program is its license code, on the basis of which the activation code is generated. This is done through communication via the Internet connection or by phone, and for some developers, other activation methods are also provided.
By using and learning open source apps, you can learn how to build good apps yourself.
The best open source Android projects are listed below. Thanks to them, you can learn a lot of great practices for Android development.
1. Android application with MVP architecture
MVP using .
2. Android application with MVVM architecture
This repository contains an application that implements the architecture MVVM using Dagger2, GreenDao, RxJava2, Fast-Android-Networking and PlaceholderView.
3. Google I / O Android APP
Google I / O is a developer conference held every year. It features hundreds of technology demos from developers.
This project is an Android conference application. The app supports devices running Android 5.0+ and is optimized for phones and tablets of all shapes and sizes.
4. Drawings of the architecture of Google Android
The Android platform has a lot of flexibility when organizing and archiving an application. This freedom can lead to applications with large classes. This can make it difficult to test, maintain, and expand.
Architecture Android Blueprint is intended to demonstrate how you can help solve these problems. This project shows the same application implemented many times using different architectural concepts and tools.
You can use these samples as a starting point to create your own applications. The focus here is on code structure, architecture, testing. However, keep in mind that there are many ways to create applications with these architectures and tools. Focus on your own priorities and don't get too carried away with what might be considered canonical examples.
5. Telegram
An Android application that is able to inspire with its design, thanks to the excellent implementation of material design.
7. Wire
This chat app is full of pictures, movies, GIFs, music, sketches and other forms of multimedia. It also always provides secure end-to-end encryption.
8. Android application ribot
Kickstarter is a global community that helps bring creative projects to life. Explore thousands of projects in art, design, film, games, music, and more.
10. PocketHub
GitHub refused to support the app, so it was released to the public and is maintained as a public project. Now the society is actively working on the republishing of this application in the Play Store. This app will be the spiritual successor to the original app.
11. Simple Android Application with MVP
A very simple application showing how to implement the MVP architecture.
Every day there are more and more applications for Android. Millions interesting games and useful programs can be found in Play Market... They all have user-friendly interface and cope with the task at hand. It's hard to imagine without them modern world information technologies... This article is aimed at people who not only value functionality and appearance applications, and are also interested in their internal structure.
If you have ever wondered what is “under the hood” of your favorite application, and you know a little about programming, this article is for you. We will tell you how to view the source code Android apps right on your gadget. Go!
General information
Most programs for the Android OS, like most of the operating system itself, are written in a programming language. This means that by looking at the source code of Android programs, we will most likely see Java code using Android SDK(which includes tools Android platforms). I repeat: to understand the source code of applications, you need to have basic knowledge Java and Android principles.
How do I find the source code of Android apps?
To get started, download the application, the source code of which interests you. Then go to the Play Market and download a utility called Show Java. It will be she who will do the decompilation. Have you installed it? Great, now let's move on to the fun part - extracting the original Android code programs. Launch Show Java.
Please select desired application installed, or find it on your SD card. Now you need to select a decompiler. I usually choose CRF. If you have any problems, try JaDX.
Upon completion of the process, you will receive a list of packages with Android sources applications. Of course, this is not a 100% copy of the code that the developers of this application wrote. But the main logic remains, it is not difficult to make out. What to do with the sources? Anything. Look, disassemble, perhaps you will be interested in some "features" or features of the implementation of the program's functionality.
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