Elements of an android app
When using an Android smartphone, you work with a multitude of different formats. Both in games, applications and files. Although it is usually possible to work with them normally on a smartphone. When downloading applications or games, it is usually in the form of an APK (Android Application Package). Although there is another format closely related to this, called XAPK that is not so well known.So, below we tell all about this XAPK format and the importance and relationship it has with Android. Although it is not a type of format that is so well known among most users, it is possible that in the future its presence is going to be increasing. So it is good to know more about it.
From its name, it is possible to deduce that the XAPK format bears some relation to the APK format, of games and applications on Android. Indeed, this is so, there is a relationship between them. Because it can be stated that a file with the XAPK format is a file in APK plus the additional OBB data, which make such a game or application is going to work properly on an Android smartphone.Therefore, there are a number of additional data files present in it. There may be times when it may not be possible to download such data. Especially if there are issues with the availability of a particular game or application. In some cases it is possible to access such data separately. Since a separate OBB file is made available to users. But the cases in which this happens are limited.
Basic structure of an android application
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In which folders are the resources of an application stored?
If the user’s device is root it doesn’t matter where you store the information because the user will be able to access the database files or the Shared preferences files or any files that are stored in the App’s folder.
Encryption is essential for the task you want to do to keep conversations private. I would recommend using the Database for storing conversations, as it will be easier for you to access the information you want and can store a large volume of data.
The best thing to do is to encrypt (and decrypt when reading them), it can be with a key encryption algorithm, I recommend you to make your own algorithm (look for bit operators for this) and encrypt each conversation data (character, value, etc) and encrypt the file (byte by byte) for a more effective encryption and the encryption key can be generated by your server.
Open an app from another android studio app
In this article we are going to take a look at **how Android stores information** in the form of folders and files. A modest dissection so that when you see certain folder names **they don’t sound exotic**.
The usual is that it has a physical internal memory where, on the one hand, all the files and folders generated by Android are stored, and on the other hand, the root memory (or **root device**) which are the most important files, the file structure of the Android system itself.
Both in the internal memory and in that SDCARD folder you will find the usual **DCIM** folders (pictures taken with the cameras built into your Android device) and others such as **Download, Movies, Music, Video, Podcasts, Ringtones** or similar. You can find them in the root directory or inside the **data** folder.
Inside **data** you will find the **app** folder (only visible with root or administrator permissions) where the applications installed on Android are stored. Basically they are **APK files** which, in turn, contain the files and folders that are part of the application.