在单位的项目中，需要一个算法来计算一个特殊值，可是相关的部门却不给计算公式，只是给了几个封装好的so文件和一个.h文件，让传入几个值，然后得到相应的值。拷。。。。。没法子，人家不给，我们只好调用这个了。

这里在导入so文件和调用其中的方法时，遇到很多坑，这里做一个记录，以备以后查询。

我使用的as1.5版本，一直没有升级呢。所以这里的所有方法，都是针对这个版本来的。

第一步，我们将相关的so文件，复制到libs文件里。

这里，相关部门给出了所有应该有的文件夹的.so文件，如下图

这里要注意一点，如果你加完之后，找不到.so文件，你看一下你有没有armeabi-v7a文件夹，在此文件夹里，一定要有so文件，不然在有些版本中就会出现错误。

第二步，修改，我们app下面的build.gradle文件，添加如下代码

task nativeLibsToJar(type: Zip, description: "create a jar archive of the native libs") {

destinationDir file("$projectDir/libs")

baseName "Native_Libs2"

extension "jar"

from fileTree(dir: "libs", include: "**/*.so")

into "lib"

}

tasks.withType(JavaCompile) {

compileTask -> compileTask.dependsOn(nativeLibsToJar)

}                    这段代码，是与buildTypes同级的，如下图

第三步，建立相应的包与类文件

这里我们要根据给的.h文件来建立相应的包,文件名是这个com_romaway_stocklib_StockIndex.h那么，我们就要建立一个com.romaway.stocklib包，然后在此包中，建立StockIndex.class文件。建好后，如下图

第四步，根据给出的.h文件，我们根据里面的方法，编写相应的方法，我的文件里，是这样的，只有一个方法，带了10多个数组。

下面是我的.h文件，我们/* DO NOT EDIT THIS FILE - it is machine generated */

#include

/* Header for class com_romaway_stocklib_StockIndex */

#ifndef _Included_com_romaway_stocklib_StockIndex

#define _Included_com_romaway_stocklib_StockIndex

#ifdef __cplusplus

extern "C" {

#endif

/*

* Class: com_romaway_stocklib_StockIndex

* Method: CalcZiWuLine

* Signature: ([D[D[D[D[D[D[D[D[D[D[D[D[D[D[D[D[D)I

*这里注意，看到_CalcZiWuLine了吗，这个就是你要编写的方法名了

*/

JNIEXPORT jint JNICALL Java_com_romaway_stocklib_StockIndex_CalcZiWuLine

(JNIEnv *, jclass, jdoubleArray, jdoubleArray, jdoubleArray, jdoubleArray, jdoubleArray, jdoubleArray, jdoubleArray, jdoubleArray, jdoubleArray, jdoubleArray, jdoubleArray, jdoubleArray, jdoubleArray, jdoubleArray, jdoubleArray, jdoubleArray, jdoubleArray);

#ifdef __cplusplus

}

#endif

#endif                    StockIndex.class文件如下

public class StockIndex{

public static native void CalcZiWuLine(double[] list_open,double[] list_close,double[] list_high,double[] list_low,

double[] list1,double[] list2,double[] list3,double[] list4,double[] list5,

double[] list6,double[] list7,double[] list8,double[] list9,double[] list10,

double[] list11,double[] list12,double[] list13);

}

OK，当你写完之后，你会发现这页有提示有错，这里呢，我们先不去管它，一会做统一处理。

第五步，在你想要的地方进行调用这个方法

package com.example.cg.sofileopera;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

import com.romaway.stocklib.StockIndex;

public class MainActivity extends AppCompatActivity implements View.OnClickListener{

static

{

System.loadLibrary("StockIndex"); //引入包名

}

private Button btn_view;

private TextView txt_1;

private TextView txt_2;

private TextView txt_3;

private TextView txt_4;

private TextView txt_5;

private TextView txt_6;

private TextView txt_7;

private TextView txt_8;

private TextView txt_9;

private TextView txt_10;

private TextView txt_11;

private TextView txt_12;

private TextView txt_13;

@Override

protected void onCreate(Bundle savedInstanceState){

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

initControls();

}

/**

* 初始化控件

*/

private void initControls(){

btn_view = (Button)findViewById(R.id.btn_view);

btn_view.setOnClickListener(this);

txt_1 = (TextView)findViewById(R.id.txt_1);

txt_2 = (TextView)findViewById(R.id.txt_2);

txt_3 = (TextView)findViewById(R.id.txt_3);

txt_4 = (TextView)findViewById(R.id.txt_4);

txt_5 = (TextView)findViewById(R.id.txt_5);

txt_6 = (TextView)findViewById(R.id.txt_6);

txt_7 = (TextView)findViewById(R.id.txt_7);

txt_8 = (TextView)findViewById(R.id.txt_8);

txt_9 = (TextView)findViewById(R.id.txt_9);

txt_10 = (TextView)findViewById(R.id.txt_10);

txt_11 = (TextView)findViewById(R.id.txt_11);

txt_12 = (TextView)findViewById(R.id.txt_12);

txt_13 = (TextView)findViewById(R.id.txt_13);

}

@Override

public void onClick(View view){

switch (view.getId())

{

case R.id.btn_view:

tempData();

break;

}

}

private void tempData(){

double[] arrOpen = new double[5];

double[] arrClose = new double[5];

double[] arrHigh = new double[5];

double[] arrLow = new double[5];

double[] arr1 = new double[5];

double[] arr2 = new double[5];

double[] arr3 = new double[5];

double[] arr4 = new double[5];

double[] arr5 = new double[5];

double[] arr6 = new double[5];

double[] arr7 = new double[5];

double[] arr8 = new double[5];

double[] arr9 = new double[5];

double[] arr10 = new double[5];

double[] arr11 = new double[5];

double[] arr12 = new double[5];

double[] arr13 = new double[5];

arrOpen[0] = 19.69;

arrOpen[1] = 25.99;

arrOpen[2] = 28.59;

arrOpen[3] = 28.59;

arrOpen[4] = 34.6;

arrClose[0] = 23.63;

arrClose[1] = 25.99;

arrClose[2] = 28.59;

arrClose[3] = 31.45;

arrClose[4] = 34.6;

arrHigh[0] = 23.63;

arrHigh[1] = 25.99;

arrHigh[2] = 28.59;

arrHigh[3] = 31.45;

arrHigh[4] = 34.6;

arrLow[0] = 19.69;

arrLow[1] = 25.99;

arrLow[2] = 28.59;

arrLow[3] = 31.45;

arrLow[4] = 34.6;

new StockIndex().CalcZiWuLine(arrOpen, arrClose, arrHigh, arrLow, arr1, arr2, arr3, arr4, arr5, arr6, arr7, arr8, arr9, arr10,

arr11, arr12, arr13);

String str1= "";

String str2= "";

String str3= "";

String str4= "";

String str5= "";

String str6= "";

String str7= "";

String str8= "";

String str9= "";

String str10= "";

String str11= "";

String str12= "";

String str13= "";

for(int i=0;i<5;i++)

{

str1 += arr1[i] + ",";

str2 += arr2[i] + ",";

str3 += arr3[i] + ",";

str4 += arr4[i] + ",";

str5 += arr5[i] + ",";

str6 += arr6[i] + ",";

str7 += arr7[i] + ",";

str8 += arr8[i] + ",";

str9 += arr9[i] + ",";

str10 += arr10[i] + ",";

str11 += arr11[i] + ",";

str12 += arr12[i] + ",";

str13 += arr13[i] + ",";

}

txt_1.setText(str1);

txt_2.setText(str2);

txt_3.setText(str3);

txt_4.setText(str4);

txt_5.setText(str5);

txt_6.setText(str6);

txt_7.setText(str7);

txt_8.setText(str8);

txt_9.setText(str9);

txt_10.setText(str10);

txt_11.setText(str11);

txt_12.setText(str12);

txt_13.setText(str13);

}

}

代码完成，现在编译，运行，报错。没事，这里只要设置一下。File--->Settings--->Plugins，将Android NDK Support后面的对勾去掉如下图

再运行，一切正常，得到了我想要的值