1. IDE：
Intelligent Development Environm abbreviation. That is, an intelligent development environment. It is a development tool. Commonly used IDEs include adt-bundles and Android studio. Both require jdk configuration.
2. ADT：
The abbreviation of Android Development tools. That is, Android development tools. ADT is a plugin for Eclipse. It acts as a bridge between Eclipse and the SDK.
3. SDK：
The abbreviation of Soft Development Kit. Software Development Toolkit. In Android, it provides developers with library files and other tools used for development.
4. JDK：
Java development toolkit. Includes Java running environment, Java tools and Java basic Java class library.
5. NDK:
concept:
(1).NDK is a collection of tools. Help developers quickly develop dynamic libraries for C/C++.
And it can automatically package so and Java applications into apk together. These tools are of great help to developers.
(2).NDK will be the beginning of Android platform development supporting C development.
effect:
(1). Code protection. Since Java layer code is easily decompiled, it is very difficult to decompile the C/C++ library.
(2). It is easy to use the existing open source library. Most of the existing open source libraries are written in C/C++ code.
(3). Improve the execution efficiency of the program. High-performance application logic will be developed using C, thereby improving the execution efficiency of the application.
(4). Easy to transplant. Library written in C/C++ can be easily used again on other embedded platforms.