Andriod JNI Programming C ++ Java callback function

http://blog.csdn.net/zhaoweixing1989/article/details/7846117

Generally, we are all Java programming NDK C ++ interface layer calls, but in fact only C ++ layer can also call the function of Java. Method is as follows:

1, to obtain the class name: jclass cls = env-> FindClass

2, class acquisition method: jmethodID mid = env-> GetMethodID

3, to get a class member variables: fieldID fid = env-> GetFieldID

4, to generate a class object: jobject obj = env-> NewObject (jobect may be passed down from layer Java)

5, call the class member method: env-> CallXXXMethod (XXX is the Java method's return value type)

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