FindClass from any thread in Android JNI

Question

Android\'s JNI tips page mentions this FAQ: Why didn\'t FindClass find my class? They mention multiple solutions and the last option there is this one:

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Answer 1

Try attaching your native thread to the JVM first.

The pointer to jvm you can obtain first thing in JNI_OnLoad

env->GetJavaVM(&jvm);

Then from your native thread

JNIEnv *env;
jvm->AttachCurrentThread((void **)&env, NULL);

Then use that env for FindClass