Error: Cannot Access Android.app.activity

I am working on Android application in which to make header file I am using terminal. For this I am using the following commands should in the images but getting the following erro

Solution 1:

it looks like you need to specify the path to the android.jar, which is usually located under sdk/platforms/android-version

javah -jni -classpath /path/to/sdk/platforms/android-version/android.jar:bin/classes/ -d jni/ com.ziqitza.helper.HelloJni

or with

javah -jni -bootclasspath /path/to/sdk/platforms/android-version/android.jar  -classpath bin/classes/ -d jni/ com.ziqitza.helper.HelloJni