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Editorial Team
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Asked: 2026-05-23T00:06:06+00:00

While there is documentation regarding turning a jstring to a native string ( string

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While there is documentation regarding turning a jstring to a native string (string nativeString = env->GetStringUTFChars(jStringVariable, NULL);) I can’t find an example which will convert a jboolean to a bool or a jint to an int.

Can anyone suggest how this is achieved?

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1 Answer

  1. Editorial Team

    You just need to cast jintto int using C style casts. Same for jboolean to bool (if you’re using C99 bool type) or to uint8_t (if you’re using std int types) or to unsigned char.

    Open $NDK_ROOT/platforms/android-8/arch-arm/usr/include/jni.h and you’ll see jint, jboolean etc are just typedefs.

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