Introduction
Definition : Native Development Kit is a tool development kit for Android.
NDK belongs to Android and has no direct relationship with Java
Function : Rapidly develop C and C++ dynamic libraries, and automatically package so and applications into APK
You can use JNI to interact with native code (such as C, C++) in Android through NDK
Application scenario : use JNI in the Android scenario.
Features :
Steps for usage
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1. Configure the Android NDK environment
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2. Create an Android project and associate it with NDK
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3. Declare the Native method that needs to be called in the Android project
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4. Use the native code that Android needs to interact to implement the Native method declared in Android.
For example, if Android needs to interact with C++, then use C++ to implement the Java Native method -
5. Compile and generate the .so library file through the ndk - bulid command
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6. Compile the Android Studio project to realize Android calling local code
NDK and JNI relationship
Android Studio 2.2 or above implements NDK
Because Android Studio 2.2 and above have integrated NDK, you only need to configure it inside Android Studio
Step 1: Follow the prompts to create a project
When creating a project, you need to configure NDK and install it step by step according to the prompts.
Step 2: Use NDK according to your needs
- After configuring the NDK, Android Studio will automatically generate the C++ file and set the calling code
- You only need to modify the C++ file according to your needs & Android can use it.
