What are some use cases for using the Android NDK?

The main use cases of Android NDK include the following:

1. Improve performance: The NDK can utilize low-level C/C++ libraries to directly access hardware resources, enhancing the performance of applications. Particularly for applications that require handling a large amount of computation, graphic rendering, and audio/video processing, using the NDK can significantly improve performance.
2. Cross-platform development: With NDK, C/C++ code can be compiled into native libraries, which can be reused across different platforms. This can reduce development effort while maintaining consistency of the application across various platforms.
3. Private algorithm protection: NDK can compile sensitive algorithms or critical code into native libraries, encrypting them to prevent reverse engineering or cracking.
4. Compatible with old code: Existing C/C++ code can be integrated into an Android application using NDK without the need for rewriting.

It is important to be aware that using NDK also comes with some potential risks and issues, such as increased development complexity, platform compatibility, and debugging difficulties. Therefore, when considering to use NDK, it is important to take into account project requirements and the capabilities of the development team.