Error: Unable to access android.app.Activity Android.app.Activity class file could not be found

Problem

When using the javah instruction to generate the. h file under the Android project path, Javah-classpath bin/classes-d jni com.example.myhellojni.MainActivity

---> Error occurred: Unable to access Android.app.Activity android.app.Activity class file was not found.

Where-classpath bin: represents the road strength of the class

Where-D JNI: Represents the directory where the generated header file resides

Where Com.example.hellojni.HelloJni is the full class name

"Solution"

Enter the SRC directory, using javah-d. /JNI com.example.myhellojni.MainActivity directive instead.

Where-D: Create a directory.

Among them. /jni: The header file is generated under the Jni file of the parent directory.

Principle:. Java files are also not compiled to generate. h files directly.

Error: Unable to access android.app.Activity Android.app.Activity class file could not be found