Android NDK Practical Learning (iii)-Construction and use of Java End Class objects

1. Before reading this article I assume you have read:

Android NDK Practical Learning-get Java-side classes and their class variables

Android NDK Practical Learning-java End Object member assignment and get object member values

2,java the construction of the End Class object:

① first gets the class;

② gets the parameterless constructor of the class:

" <init> " " () V ");

③ Constructor Class instance:

Jobject Jresult = Env->newobject (Jcsetdatamgr, Initid);

④ assign a value to a class variable:

1     // Assignment assigns a value from C + + to Jresult 2     int 666 ; 3     true ); 4     Env->setintfield (G_testobject, Gs_testgetdatamgr.jidata, i);

Note: Additional assignment codes can refer to the Android NDK utility learning-java End Object member assignment and get object member values

⑤ class instances can be passed as return values and class parameters;

Android NDK Practical Learning (iii)-Construction and use of Java End Class objects