{ jclass strClass = (env)->FindClass("java/lang/String"); jmethodID ctorID = (env)->GetMethodID(strClass, "<init>", "([BLjava/lang/String;)V"); jbyteArray bytes = (env)->NewByteArray(strlen(pat)); (env)->SetByteArrayRegion(bytes, 0, strlen(pat), (jbyte*) pat); jstring ...
return (*env)->NewStringUTF(env, cap); } C++代码: JNIEXPORT jstring JNICALL Java_Sample1_stringMethod(JNIEnv *env, jobject obj, jstring string) { const char *str = (env)->GetStringUTFChars(string, 0); char cap[128]; strcpy(cap, str); (env)->ReleaseStringUTFChars(string, str); int...
Java代码的声明和调用与常规的静态方法时一致的。 2、Jni层代码 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #include<jni.h>#include<string>extern"C"JNIEXPORTjstringJNICALLGetstringFromJNI(JNIEnv*env,jobject/* this */){std::string hello="Hello from jni test2 by dynamic load";returnenv->...
private static String callbackStatic() { return "From static Java method"; } //测试驱动程序 public static void main(String args[]) { new TestJNICallBackMethod().nativeMethod(); } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22....
}returnSmsRead(x,&example);//调用sms.c里的SmsRead方法} JNIEXPORT jint JNICALL Java_SendSMS_foo(JNIEnv*env, jobject obj, jobject fooObj) {//printf("debug -10\n");charbuf[1024]; printf("debug -9\n"); memset(buf,0x00,1024); ...
2466 return JNI_ERR; // Not reached except in unit tests. 2467 } 2468 CHECK_NON_NULL_ARGUMENT_FN_NAME("RegisterNatives", java_class, JNI_ERR); 2469 ScopedObjectAccess soa(env); 2470 StackHandleScope<1> hs(soa.Self(...
to find class '%s'\n",className);return-1;}int result=0;if((env)->RegisterNatives(clazz,gJni_Methods_table,numMethods)<0){LOGE("JNI","RegisterNatives failed for '%s'\n",className);result=-1;}(env)->DeleteLocalRef(clazz);returnresult;}jintJNI_OnLoad(JavaVM*vm,void*reserved){LOGI(...
1、方法参数或者返回值为java中的对象时,签名中必须以“L”加上其路径,不过此路径必须以“/”分开,自定义的对象也使用本规则。 比如说 java.lang.String为“java/lang/String”,com.nedu.jni.helloword.Student为"Lcom /nedu/jni/helloword/Student;" ...
JNIEXPORTjstringJNICALLJava_Prompt_getLine(JNIEnv*env,jobjectobj,jstringprompt){printf("%s",prompt);...} 3.2.1. 转换到本地字符串 使用对应的JNI函数把jstring转成C/C++字串。JNI支持Unicode/UTF-8字符编码互转。Unicode以16-bits值编码;UTF-8是一种以字节为单位变长格式的字符编码,并与7-bits ASCII码...
(path,0);// 将 String 转为 char*ptr->init_model(cpath);env->ReleaseStringUTFChars(path,cpath);// 释放Stringreturn(long)ptr;};JNIEXPORTvoidJNICALLJava_com_vivo_demo_model_ModelComputer_close(JNIEnv*env,jclassclazz,jlongptr){vivo::Computer*computer=(vivo::Computer*)ptr;// 获取到对象...