C调java 利用反射：
-------------------------------------------------------------------------------------------------------------------------------------
JNI类：
package com.example.JNIDDemo1;
/**
* Created by zengjx on 2018/4/11.
*/
public class JNI {
static {
System.loadLibrary("javaCallC");
}
//C语言调用 java空方法
public void helloFromJava(){
System.out.println(" C回调java 空方法 helloFromJava");
}
//C语言调用 java int方法
public int javaadd(int x,int y){
System.out.println("javaadd");
return x+y;
}
//C语言调用 java String方法
public void print(String s){
System.out.println(s);
}
//写 native 方法
public native int add(int x,int y);
public native int del(int a ,int b);
public native String getHelloFromC();//获取字符串
public native String getString(String str);
public native int[] getIntArray(int[] array);
public native int getStringLen(String str);
public native byte[] getByteArray(byte[] array);
public native String getStringAdd(String str);//字符串拼接
//调用这个方法回调java空方法
public native void callbackVoidFuntion();
//调用这个方法回调java int方法
public native void callbackIntFuntion();
//调用这个方法回调java String 方法
public native void callbackStringFuntion();
}
-
idea 在 deaCode\JNIDDemo1\out\production\JNIDDemo1\com\example\JNIDDemo1 下输入 javap -p -s 类名 JNI 获取
-
descriptor描述:
:\ideaCode\JNIDDemo1\out\production\JNIDDemo1\com\example\JNIDDemo1> javap -
-s JNI
警告: 二进制文件JNI包含com.example.JNIDDemo1.JNI
ompiled from "JNI.java"
ublic class com.example.JNIDDemo1.JNI {
public com.example.JNIDDemo1.JNI();
descriptor: ()V
public void helloFromJava();
descriptor: ()V
public int javaadd(int, int);
descriptor: (II)I
public void print(java.lang.String);
descriptor: (Ljava/lang/String;)V
public native int add(int, int);
descriptor: (II)I
public native int del(int, int);
descriptor: (II)I
public native java.lang.String getHelloFromC();
descriptor: ()Ljava/lang/String;
public native java.lang.String getString(java.lang.String);
descriptor: (Ljava/lang/String;)Ljava/lang/String;
public native int[] getIntArray(int[]);
descriptor: ([I)[I
public native int getStringLen(java.lang.String);
descriptor: (Ljava/lang/String;)I
public native byte[] getByteArray(byte[]);
descriptor: ([B)[B
public native java.lang.String getStringAdd(java.lang.String);
descriptor: (Ljava/lang/String;)Ljava/lang/String;
public native void callbackVoidFuntion();
descriptor: ()V
public native void callbackIntFuntion();
descriptor: ()V
public native void callbackStringFuntion();
descriptor: ()V
static {};
descriptor: ()V
src目录下生成头文件：
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class com_example_JNIDDemo1_JNI */
#ifndef _Included_com_example_JNIDDemo1_JNI
#define _Included_com_example_JNIDDemo1_JNI
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: com_example_JNIDDemo1_JNI
* Method: add
* Signature: (II)I
*/
JNIEXPORT jint JNICALL Java_com_example_JNIDDemo1_JNI_add
(JNIEnv *, jobject, jint, jint);
/*
* Class: com_example_JNIDDemo1_JNI
* Method: del
* Signature: (II)I
*/
JNIEXPORT jint JNICALL Java_com_example_JNIDDemo1_JNI_del
(JNIEnv *, jobject, jint, jint);
/*
* Class: com_example_JNIDDemo1_JNI
* Method: getHelloFromC
* Signature: ()Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_com_example_JNIDDemo1_JNI_getHelloFromC
(JNIEnv *, jobject);
/*
* Class: com_example_JNIDDemo1_JNI
* Method: getString
* Signature: (Ljava/lang/String;)Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_com_example_JNIDDemo1_JNI_getString
(JNIEnv *, jobject, jstring);
/*
* Class: com_example_JNIDDemo1_JNI
* Method: getIntArray
* Signature: ([I)[I
*/
JNIEXPORT jintArray JNICALL Java_com_example_JNIDDemo1_JNI_getIntArray
(JNIEnv *, jobject, jintArray);
/*
* Class: com_example_JNIDDemo1_JNI
* Method: getStringLen
* Signature: (Ljava/lang/String;)I
*/
JNIEXPORT jint JNICALL Java_com_example_JNIDDemo1_JNI_getStringLen
(JNIEnv *, jobject, jstring);
/*
* Class: com_example_JNIDDemo1_JNI
* Method: getByteArray
* Signature: ([B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_com_example_JNIDDemo1_JNI_getByteArray
(JNIEnv *, jobject, jbyteArray);
/*
* Class: com_example_JNIDDemo1_JNI
* Method: getStringAdd
* Signature: (Ljava/lang/String;)Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_com_example_JNIDDemo1_JNI_getStringAdd
(JNIEnv *, jobject, jstring);
/*
* Class: com_example_JNIDDemo1_JNI
* Method: callbackVoidFuntion
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_com_example_JNIDDemo1_JNI_callbackVoidFuntion
(JNIEnv *, jobject);
/*
* Class: com_example_JNIDDemo1_JNI
* Method: callbackIntFuntion
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_com_example_JNIDDemo1_JNI_callbackIntFuntion
(JNIEnv *, jobject);
/*
* Class: com_example_JNIDDemo1_JNI
* Method: callbackStringFuntion
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_com_example_JNIDDemo1_JNI_callbackStringFuntion
(JNIEnv *, jobject);
#ifdef __cplusplus
}
#endif
#endif
------------------------------------------------------------------------------------------------------------------------------------------------
C文件： javaCallC.c
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include "com_example_JNIDDemo1_JNI.h"
#include <android/log.h>
#define TAG "JNI_TAG"
#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, TAG, __VA_ARGS__)
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO, TAG, __VA_ARGS__)
char* _JString2Cstr(JNIEnv* env,jstring jstr);
char* Jstring2CStr(JNIEnv* env,jstring jstr);
jstring CStr2Jstring( JNIEnv* env, const char* pat);
/*
* Class: com_example_JNITest2_JNI
* Method: add
* Signature: (II)I
*/
JNIEXPORT jint JNICALL JNICALL Java_com_example_JNIDDemo1_JNI_add
(JNIEnv * env, jobject jobject, jint x, jint y){
int result =0;
result=x+y;
LOGI("LOGI----result%d,%d,%d",x,y,result);
/**************c调用java*****************/
jclass cls;
jmethodID mid;
jmethodID mid_add;
jmethodID mid_string;
cls=(*env)->FindClass(env,"com/example/JNIDDemo1/JNI");
//找到字节码
mid= (*env)->GetMethodID(env,cls,"helloFromJava","()V");
//找到方法
//创建对象（可选 同一个java类中 不要创建对象jobject ）
//通过对象调用方法
(*env)->CallVoidMethod(env,jobject,mid);
//第二个 函数
//public int javaadd(int, int);
// descriptor: (II)I
mid_add= (*env)->GetMethodID(env,cls,"javaadd","(II)I");
//通过对象调用方法
int res =(*env)->CallIntMethod(env,jobject,mid_add,123,456);
LOGI("LOGI--c调用 java add--%d",res);
//第3个
// public void print(java.lang.String);
// descriptor: (Ljava/lang/String;)V
mid_string= (*env)->GetMethodID(env,cls,"print","(Ljava/lang/String;)V");
//通过对象调用方法
jstring jstr =(*env)->NewStringUTF(env,"print from c");
(*env)->CallVoidMethod(env,jobject,mid_string,jstr);
return result;
}
/*
* Class: com_example_JNITest2_JNI
* Method: del
* Signature: (II)I
*/
JNIEXPORT jint JNICALL Java_com_example_JNIDDemo1_JNI_del
(JNIEnv *env, jobject jobject, jint a, jint b){
int result =0;
result=a-b;
LOGI("LOGI----result%d",result);
return result;
}
/*
* Class: com_example_JNIDDemo1_JNI
* Method: getHelloFromC
* Signature: ()Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_com_example_JNIDDemo1_JNI_getHelloFromC
(JNIEnv *env, jobject jclass){
LOGI("LOGI---getHelloFromC\n");
//jstring jstr = CStr2Jstring( JNIEnv* env, const char* pat)
char* str=" i am from C+++++++++\n";
jstring jstr = CStr2Jstring(env,str);
return jstr;
// return (**env).NewStringUTF(env,"String from C ！！！\n");
}
char* _JString2Cstr(JNIEnv* env,jstring jstr){
char* cstr=NULL;
//获取String.class 字节码
LOGI("LOGI----resultcstr%s","_JString2Cstr");
jclass classstring=(*env)->FindClass(env,"java/lang/String");//找到String 类型的字节码
LOGI("LOGI----resultcstr%s","_JString2Cstr 2");
jstring strencode=(*env)->NewStringUTF(env,"GB2312");
LOGI("LOGI----resultcstr%s","_JString2Cstr 3");
//获取 方法 ID 号
//找到 classstring 的 getByte 方法
jmethodID mid =(*env)->GetMethodID(env,classstring,"getBytes","Ljava/lang/String;)[B");
LOGI("LOGI----resultcstr%s","_JString2Cstr 4");
// jbyteArray barr=(jbyteArray)(**env).CallObjectMethod(env,jstr,mid,strencode);
//下面这句话会报错；JNI DETECTED ERROR IN APPLICATION: JNI CallObjectMethod called with pending exception 'java.lang.NoSuchMethodError' thrown in java.lang.String com.example.JNIDDemo1.JNI.getStringAdd(java.lang.String):-2
/* 12-12 14:21:16.876 21141-21141/com.example.JNIDDemo1 A/art﹕ art/runtime/check_jni.cc:65] in call to CallObjectMethod
*/
jbyteArray barr= (jbyteArray) (*env)->CallObjectMethod(env,jstr,mid,strencode);
LOGI("LOGI----resultcstr%s","_JString2Cstr 5");
//获取数组的长度
jsize alen =(*env)->GetArrayLength(env,barr);
LOGI("LOGI----resultcstr_JString2Cstr 6 %d",alen);
//获取数组首地址
jbyte* ba=(*env)->GetByteArrayElements(env,barr,JNI_FALSE);
if(alen>0){//是否有内容
cstr=(char*)malloc(alen+1);
memcpy(cstr,ba,alen);
cstr[alen]=0;//"结束符"
}
(*env)->ReleaseByteArrayElements(env,barr,ba,0);
LOGI("LOGI---_JString2Cstr end :%s",cstr);
return cstr;
}
JNIEXPORT jstring JNICALL Java_com_example_JNIDDemo1_JNI_getString
(JNIEnv *env, jobject jobject, jstring jstr){
jsize size;
char acbuf[]="wwwwwwwwwwwwwww";
int strlen=0;
char *cstr;
int i=0;
cstr = (*env)->GetStringUTFChars(env, jstr, NULL);//获得字符串转为 字符串指针
if (cstr == NULL) {//用到分配内存可能会失败
return NULL; /* OutOfMemoryError already thrown */
}
size= (*env)->GetStringUTFLength(env, jstr);
LOGI("Get string from java size:%d\n",size);
// strlen=strlen(cstr);
// LOGI("Get string from java size:%d\n",strlen);
LOGI("Get string from java :%s\n", cstr);
for(i=0;i<size;i++){
LOGI("Get string from java :%c\n", cstr[i]);
*(cstr+i)+=1;
LOGI("Get string from java :%c\n", cstr[i]);
}
// (*env)->ReleaseStringUTFChars(env, jstr, cstr);//释放空间
// return (*env)->NewStringUTF(env,acbuf);
return (*env)->NewStringUTF(env,cstr);
}
/*
* Class: com_example_JNIDDemo1_JNI
* Method: getIntArray
* Signature: ([I)[I
*/
JNIEXPORT jintArray JNICALL Java_com_example_JNIDDemo1_JNI_getIntArray
(JNIEnv *env, jobject jobject, jintArray jarr){
//获取数组的长度;
int len= (*env)->GetArrayLength(env,jarr);
int i=0;
//获取数组的首地址
//最后一个参数为 0表示以不复制的方式获取
jint* p =(*env)->GetIntArrayElements(env,jarr,0);
LOGI("地址: %d--- %d ---%d\n",p,*p,jarr);
for(i=0;i<len;i++){
LOGI("改变1:%d\n",*(p+i));
*(p+i)+=100;
(*env)->SetIntArrayRegion(env,jarr, i, 1, p+i);
LOGI("改变2:%d\n",*(p+i));
}
//安卓中最后一个参数 为null 不会复制副本
jboolean isCopy=NULL;
int* p1 =(*env)->GetIntArrayElements(env,jarr,&isCopy);
for(i=0;i<len;i++){
LOGI("改变后:%d\n",*(p1+i));
}
//由于在原数组中直接修改所以
return jarr;
}
/*
* Class: com_example_JNIDDemo1_JNI
* Method: getByteArray
* Signature: ([B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_com_example_JNIDDemo1_JNI_getByteArray
(JNIEnv *env, jobject jobject, jbyteArray byteArray){
jbyte* receivedbyte = (*env)->GetByteArrayElements(env,byteArray, 0);
jsize size = (*env)->GetArrayLength(env,byteArray);
for (int i = 0; i < size; i++) {
int value = (int)(receivedbyte[i] & 0xff);
LOGI("byteArray---%d\t",value);
// jbyte v = (~value);
jbyte v = value+100;
LOGI("byteArray2---%d\t",v);
(*env)->SetByteArrayRegion(env,byteArray, i, 1, &v);
}
return byteArray;
}
/*
* Class: com_example_JNIDDemo1_JNI
* Method: getStringAdd
* Signature: (Ljava/lang/String;)Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_com_example_JNIDDemo1_JNI_getStringAdd
(JNIEnv *env, jobject jclass, jstring jstr){
char* p=Jstring2CStr(env,jstr);
//char* p =JString2Cstr(env,jstr);
LOGI("java传递的字符串---%s\n",p);
//字符串数组
char* newStr="nihao";
return (*env)->NewStringUTF(env,strcat(p,newStr));
}
/**
利用Java的String类来完成字符编码转换
*/
char* Jstring2CStr(JNIEnv* env,jstring jstr)
{
LOGI("enter CStr2Jstring 1");
char* rtn = NULL;
jclass clsstring = (*env)->FindClass(env,"java/lang/String");
jstring strencode = (*env)->NewStringUTF(env,"GB2312");//转换成Cstring的GB2312，兼容ISO8859-1
//jmethodID (*GetMethodID)(JNIEnv*, jclass, const char*, const char*);第二个参数是方法名，第三个参数是getBytes方法签名
//获得签名：javap -s java/lang/String: (Ljava/lang/String;)[B
jmethodID mid = (*env)->GetMethodID(env,clsstring,"getBytes","(Ljava/lang/String;)[B");
//等价于调用这个方法String.getByte("GB2312");
//将jstring转换成字节数组
LOGI("enter CStr2Jstring 2");
//用Java的String类getByte方法将jstring转换为Cstring的字节数组
jbyteArray barr= (jbyteArray) (*env)->CallObjectMethod(env,jstr,mid,strencode);
LOGI("enter CStr2Jstring 3");
jsize alen = (*env)->GetArrayLength(env,barr);
LOGI("enter CStr2Jstring 4");
jbyte* ba = (*env)->GetByteArrayElements(env,barr,JNI_FALSE);
LOGI("alen=%d\n",alen);
if(alen > 0)
{
rtn = (char*)malloc(alen+1+128);
LOGI("rtn address == %p",&rtn);//输出rtn地址
memcpy(rtn,ba,alen);
rtn[alen]=0; //"\0"
}
(*env)->ReleaseByteArrayElements(env,barr,ba,0);
return rtn;
}
/**
* C的字符串转jstring的字符串
*/
jstring CStr2Jstring( JNIEnv* env, const char* pat)
{
//jclass strClass = (*env)->FindClass(env,"Ljava/lang/String;");
jclass strClass = (*env)->FindClass(env,"java/lang/String");
jmethodID mID = (*env)->GetMethodID(env,strClass, "<init>", "([BLjava/lang/String;)V");
jbyteArray bytes = (*env)->NewByteArray(env,(jsize)strlen(pat));
(*env)->SetByteArrayRegion(env,bytes, 0, (jsize)strlen(pat), (jbyte*)pat); //将char* 转换为byte数组
jstring encoding = (*env)->NewStringUTF(env,"GB2312");
return (jstring)(*env)->NewObject(env,strClass, mID, bytes, encoding);
}
/*---------------------
作者：JQ_AK47
来源：CSDN
原文：https://blog.csdn.net/jq_ak47/article/details/53428101
版权声明：本文为博主原创文章，转载请附上博文链接！
-------------------------------------------------*/
/*
Funtion：调用 java 的空方法
* Class: com_example_JNIDDemo1_JNI
* Method: callbackVoidFuntion
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_com_example_JNIDDemo1_JNI_callbackVoidFuntion
(JNIEnv *env, jobject obj){
jclass cls;
jmethodID mid;
jmethodID mid_add;
jmethodID mid_string;
LOGI("-------------JNIDDemo1_JNI_callbackVoidFuntion--------------------\n");
// 函数原型：jclass (JNICALL *FindClass)(JNIEnv *env, const char *name);
//1.找到字节码 第二个参数： 要找到字节码对应类的路径
jclass clazz =(*env)->FindClass(env,"com/example/JNIDDemo1/JNI");
//2.找到方法
// jmethodID (JNICALL *GetMethodID) (JNIEnv *env, jclass clazz, const char *name, const char *sig);
// public void helloFromJava(); 第三个参数函数名称
// descriptor: ()V //第4个参数 Java方法参数
jmethodID jmethodID=(*env)->GetMethodID(env,clazz,"helloFromJava","()V");
//3创建对象. 可选，如果native 和要回调的方法在同一个类里面就不要创建对象
//直接使用 jobject
//4. 通过对象调用方法
// void (JNICALL *CallVoidMethod)// (JNIEnv *env, jobject obj, jmethodID methodID, ...);
//第一个参数：env
//第二个参数： 要调用方法的对象 obj
//要调用的方法ID jmethodID
// 第四个参数 可变参数
(*env)->CallVoidMethod(env,obj,jmethodID);
cls=(*env)->FindClass(env,"com/example/JNIDDemo1/JNI");
//找到字节码
mid= (*env)->GetMethodID(env,cls,"helloFromJava","()V");
//找到方法
//创建对象（可选 同一个java类中 不要创建对象jobject ）
//通过对象调用方法
(*env)->CallVoidMethod(env,obj,mid);
}
/* Funtion：传递整型
* Class: com_example_JNIDDemo1_JNI
* Method: callbackIntFuntion
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_com_example_JNIDDemo1_JNI_callbackIntFuntion
(JNIEnv *env, jobject obj){
// 函数原型：jclass (JNICALL *FindClass)(JNIEnv *env, const char *name);
//1.找到字节码 第二个参数： 要找到字节码对应类的路径
jclass clazz =(*env)->FindClass(env,"com/example/JNIDDemo1/JNI");
//2.找到方法
// jmethodID (JNICALL *GetMethodID) (JNIEnv *env, jclass clazz, const char *name, const char *sig);
/// public int javaadd(int, int);
// descriptor: (II)I
jmethodID jmethodID=(*env)->GetMethodID(env,clazz,"javaadd","(II)I");
//3创建对象. 可选，如果native 和要回调的方法在同一个类里面就不要创建对象
//直接使用 jobject
//4. 通过对象调用方法
// void (JNICALL *CallVoidMethod)// (JNIEnv *env, jobject obj, jmethodID methodID, ...);
//第一个参数：env
//第二个参数： 要调用方法的对象 obj
//要调用的方法ID jmethodID
// 第四个参数 可变参数
int ret= (*env)->CallIntMethod(env,obj,jmethodID,123,456);
LOGI("LOGI--c调用 java add--%d",ret);
}
/* Funtion：传递字符串
* Class: com_example_JNIDDemo1_JNI
* Method: callbackStringFuntion
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_com_example_JNIDDemo1_JNI_callbackStringFuntion
(JNIEnv *env, jobject obj){
// 函数原型：jclass (JNICALL *FindClass)(JNIEnv *env, const char *name);
//1.找到字节码 第二个参数： 要找到字节码对应类的路径
jclass clazz =(*env)->FindClass(env,"com/example/JNIDDemo1/JNI");
//2.找到方法
// jmethodID (JNICALL *GetMethodID) (JNIEnv *env, jclass clazz, const char *name, const char *sig);
// public void helloFromJava(); 第三个参数函数名称
// descriptor: ()V //第4个参数 Java方法参数
jmethodID jmethodID=(*env)->GetMethodID(env,clazz,"print","(Ljava/lang/String;)V");
jstring jstr =(*env)->NewStringUTF(env,"C数据 print from c ");
(*env)->CallVoidMethod(env,obj,jmethodID,jstr);
LOGI("LOGI--c调用 java print-");
}
------------------------------------------------------------------------------------------------------------------------------------------------
Android.mk:
LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE :=javaCallC LOCAL_SRC_FILES := javaCallC.c LOCAL_LDLIBS += -llog include $(BUILD_SHARED_LIBRARY) #include $(BUILD_STATIC_LIBRARY)
----------------------------------------------------------------------------------------------------------------------------------------------
编译：
运行结果：
12-13 13:58:09.680 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ LOGI----result12,23,35
12-13 13:58:09.680 19981-19981/com.example.JNIDDemo1 I/System.out﹕ C回调java 空方法 helloFromJava
12-13 13:58:09.680 19981-19981/com.example.JNIDDemo1 I/System.out﹕ javaadd
12-13 13:58:09.680 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ LOGI--c调用 java add--579
12-13 13:58:09.680 19981-19981/com.example.JNIDDemo1 I/System.out﹕ print from c
12-13 13:58:09.681 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ LOGI----result12,23,35
12-13 13:58:09.681 19981-19981/com.example.JNIDDemo1 I/System.out﹕ C回调java 空方法 helloFromJava
12-13 13:58:09.683 19981-19981/com.example.JNIDDemo1 I/System.out﹕ javaadd
12-13 13:58:09.683 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ LOGI--c调用 java add--579
12-13 13:58:09.683 19981-19981/com.example.JNIDDemo1 I/System.out﹕ print from c
12-13 13:58:09.683 19981-19981/com.example.JNIDDemo1 I/MyActivity﹕ 计算结果:35
12-13 13:58:09.684 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 地址: -1219296544--- 1 ----1095299104
12-13 13:58:09.684 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变1:1
12-13 13:58:09.684 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变2:101
12-13 13:58:09.684 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变1:2
12-13 13:58:09.684 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变2:102
12-13 13:58:09.684 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变1:3
12-13 13:58:09.684 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变2:103
12-13 13:58:09.685 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变1:4
12-13 13:58:09.685 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变2:104
12-13 13:58:09.685 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变1:5
12-13 13:58:09.685 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变2:105
12-13 13:58:09.685 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变后:101
12-13 13:58:09.685 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变后:102
12-13 13:58:09.685 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变后:103
12-13 13:58:09.685 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变后:104
12-13 13:58:09.685 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ 改变后:105
12-13 13:58:09.689 19981-19981/com.example.JNIDDemo1 I/int数组返回结果﹕ 101
12-13 13:58:09.689 19981-19981/com.example.JNIDDemo1 I/int数组返回结果﹕ 102
12-13 13:58:09.690 19981-19981/com.example.JNIDDemo1 I/int数组返回结果﹕ 103
12-13 13:58:09.690 19981-19981/com.example.JNIDDemo1 I/int数组返回结果﹕ 104
12-13 13:58:09.690 19981-19981/com.example.JNIDDemo1 I/int数组返回结果﹕ 105
12-13 13:58:09.690 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ byteArray---10
12-13 13:58:09.690 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ byteArray2---110
12-13 13:58:09.690 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ byteArray---20
12-13 13:58:09.690 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ byteArray2---120
12-13 13:58:09.690 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ byteArray---30
12-13 13:58:09.690 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ byteArray2----126
12-13 13:58:09.690 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ byteArray---59
12-13 13:58:09.690 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ byteArray2----97
12-13 13:58:09.690 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ byteArray---43
12-13 13:58:09.691 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ byteArray2----113
12-13 13:58:09.691 19981-19981/com.example.JNIDDemo1 I/byte数组返回结果﹕ 110
12-13 13:58:09.691 19981-19981/com.example.JNIDDemo1 I/byte数组返回结果﹕ 120
12-13 13:58:09.691 19981-19981/com.example.JNIDDemo1 I/byte数组返回结果﹕ -126
12-13 13:58:09.691 19981-19981/com.example.JNIDDemo1 I/byte数组返回结果﹕ -97
12-13 13:58:09.691 19981-19981/com.example.JNIDDemo1 I/byte数组返回结果﹕ -113
12-13 13:58:09.691 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ LOGI---getHelloFromC
12-13 13:58:09.694 19981-19981/com.example.JNIDDemo1 I/获取字符串===﹕ i am from C+++++++++
12-13 13:58:09.695 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ enter CStr2Jstring 1
12-13 13:58:09.695 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ enter CStr2Jstring 2
12-13 13:58:09.695 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ enter CStr2Jstring 3
12-13 13:58:09.695 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ enter CStr2Jstring 4
12-13 13:58:09.695 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ alen=23
12-13 13:58:09.695 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ rtn address == 0xbeb70f8c
12-13 13:58:09.696 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ java传递的字符串--- i am from java -----
12-13 13:58:09.696 19981-19981/com.example.JNIDDemo1 I/获取字符串拼接===﹕ i am from java -----nihao
12-13 13:58:09.696 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ -------------JNIDDemo1_JNI_callbackVoidFuntion--------------------
12-13 13:58:09.696 19981-19981/com.example.JNIDDemo1 I/System.out﹕ C回调java 空方法 helloFromJava
12-13 13:58:09.696 19981-19981/com.example.JNIDDemo1 I/System.out﹕ C回调java 空方法 helloFromJava
12-13 13:58:09.696 19981-19981/com.example.JNIDDemo1 I/System.out﹕ javaadd
12-13 13:58:09.696 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ LOGI--c调用 java add--579
12-13 13:58:09.696 19981-19981/com.example.JNIDDemo1 I/System.out﹕ C数据 print from c
12-13 13:58:09.697 19981-19981/com.example.JNIDDemo1 I/JNI_TAG﹕ LOGI--c调用 java print-