| JNI Example |
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| This sample shows how to build a native code library, package it into an APK, and call it using JNI. |
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| Prerequesites |
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| You must install the Android SDK in order to build the Java APK. The Android SDK can be downloaded |
| from |
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| http://code.google.com/android/download.html |
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| Build Steps: |
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| 1) Create an Eclipse project to for the Java code. |
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| Launch Eclipse |
| Choose File : New : Project... |
| Choose Android : Android Project |
| Choose Next |
| Enter "JNIExample" into the Project name: field. |
| Choose "Create project from existing source" |
| Click the Browse button and browse to the ndk/samplejni directory |
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| Click Finish |
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| 2) Build the Eclipse Project |
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| Select the JNIExample project in the Package Explorer |
| Make sure that the menu item Project:Build Automatically is not checked. |
| Choose Project:Build |
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| The resulting apk file ends up in bin/full/JNIExample.apk |
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| 2) Build the shared library, insert the shared library into the APK file and resign the |
| shared library. |
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| ANDROID_SDK_BASE=<directory where SDK is installed> make |
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| Install the APK on the device: |
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| adb install -r bin/full/JNIExample.apk |
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| Once the application is installed, you can run it by tapping on the "JNI Example" icon. |
