到目前为止,这是我所拥有的:我传递了一个具有 2 个字段的对象:字符串和整数,作为参数,我想发送信息以在 C 部分处理它,这在这一点上并不重要......我得到了抱怨在 jstring 声明处
JNIEXPORT jint JNICALL Java_Tier3_NativeMethods_totalPalletsIn(
JNIEnv *env, jclass cls, jobject stat) {
jclass staticsitcs = (*env)->GetObjectClass(env, stat);
// Here I try to get it using the ID
jfieldID idDate = (*env)->GetFieldID(env, staticsitcs, "date", "S");
jstring dateString = (jstring)(*env)->GetStringRegion(env, stat, idDate);
// Here converting whatever I get in jstring to char*
char* date = (*env)->GetStringUTFChars(env,dateString,0);
// Getting the 2nd field from the object
jfieldID idNumber = (*env)->GetFieldID(env, staticsitcs, "amount", "I");
jint amount = (*env)->GetDoubleField(env, stat, idNumber);
// Calling C method
jint totalPallets = checkTotalPalletsIn(date, amount);
(*env)->ReleaseStringUTFChars(env, dateString, date);
return totalPallets;
}
我错过了什么?