android调用python脚本

2022-06-07 07:23| 来源: 网络整理| 查看: 265

前言

文章可以帮你解决android下调用python方法获取返回值，往python函数中传参等。开发环境基于Android studio.

详细介绍

一.环境准备

在官网下载最新的CLE for Android 开发包，其中包含示例工程和API文档。解压开发包，拷贝如下文件

http://www.srplab.com/cn/files/products.html

你可能会遇到的问题

1：注意so版本；版本都要一致，从开发包里复制粘贴； 2：注意so引入路径；as和ec是有区别的；

拷贝 starcore_android_rX.X.jar的arm64-v8a目录内容到工程的libs目录拷贝starcore_android_rX.X.jar的到starcore_android_r3.7.dex、starcore_android_r3.7.jar到libs目录

如下图：

libs的和assets里面的so；

二、编写Python代码

test.py文件内容如下：

def add(x,y) : return x+y

calljava.py内容如下：

import imp #test load path def log(content): JavaClass.d("formPython",content) log("Hello Android,form python")

py_code.py内容如下：

import time def get_time(): return time.time()

将py_code.py压缩为py_code.zip文件。将编写的Python源码放入Android 工程的assets目录，其中还要包含一些Python需要的环境及标准库（android.python.3.7.0里面arm64-v8a\lib-dynload中找到对应的so库），见下图

三、编写Android相关代码，初始化CLE并调用Python

package com.cootf.mytest; import android.app.Activity; import android.app.ActivityManager; import android.content.Context; import android.content.Intent; import android.net.ConnectivityManager; import android.os.AsyncTask; import android.os.Bundle; import android.os.RemoteException; import android.telephony.TelephonyManager; import android.util.Log; import com.srplab.www.starcore.StarCoreFactory; import com.srplab.www.starcore.StarCoreFactoryPath; import com.srplab.www.starcore.StarObjectClass; import com.srplab.www.starcore.StarServiceClass; import com.srplab.www.starcore.StarSrvGroupClass; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.Iterator; import java.util.concurrent.TimeUnit; import rx.Observable; import rx.Observer; import rx.Subscription; import rx.android.schedulers.AndroidSchedulers; public class MainActivity extends Activity { private static final String TAG = MainActivity.class.getSimpleName(); private Subscription mSubscription; ActivityManager mAm; public StarSrvGroupClass SrvGroup; private StarServiceClass Service; private StarCoreFactory starcore; private StarObjectClass python; private File appFile ; private String appLib ; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.d(TAG,"onCreate"); setContentView(R.layout.activity_main); mAm = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); Iterator iter = mAm.getRunningTasks(100).iterator(); appFile = getApplicationContext().getFilesDir(); /*-- /data/data/packageName/files --*/ appLib = getApplicationInfo().nativeLibraryDir; loadPy(); } void loadPy(){ loadPyEnviroment(); initCle(); runPy(); } private void loadPyEnviroment() { //拷贝Python相关环境 File pythonLibFile = new File(appFile, "python3.7.zip"); if (!pythonLibFile.exists()) { copyFile(this, "python3.7.zip"); copyFile(this, "_struct.cpython-37m.so"); copyFile(this, "binascii.cpython-37m.so"); copyFile(this, "time.cpython-34m.so"); copyFile(this, "zlib.cpython-37m.so"); } // 拷贝Python 代码 copyFile(this, "calljava.py"); //copyFileFromSdcard(this, "test.py"); //验证读取sdcard里面的文件也可以 copyFile(this, "test.py"); try { // 加载Python解释器 System.load(appLib + File.separator + "libpython3.7m.so"); // 除了将代码直接拷贝，还支持将代码压缩为zip包，通过Install方法解压到指定路径 InputStream dataSource = getAssets().open("py_code.zip"); StarCoreFactoryPath.Install(dataSource, appFile.getPath(),true ); } catch (Exception e) { e.printStackTrace(); } } private void initCle() { /*----init starcore----*/ StarCoreFactoryPath.StarCoreCoreLibraryPath = appLib; StarCoreFactoryPath.StarCoreShareLibraryPath = appLib; StarCoreFactoryPath.StarCoreOperationPath = appFile.getPath(); starcore = StarCoreFactory.GetFactory(); starcore._SRPLock(); Log.d(TAG,"zjy startcore:"+starcore); SrvGroup = starcore._GetSrvGroup(0); Log.d(TAG,"zjy SrvGroup:"+SrvGroup); Service = SrvGroup._GetService("test","123"); Log.d(TAG,"zjy Service:"+Service); if( Service == null ){ // the service has not been initialized Log.d(TAG,"zjy Service is null"); Service = starcore._InitSimple("test", "123", 0, 0); }else{ Log.d(TAG,"zjy SrvGroup:"+SrvGroup); Service._CheckPassword(false); } Service._CheckPassword(false); /*----run python code----*/ SrvGroup._InitRaw("python37", Service); // this place python = Service._ImportRawContext("python", "", false, ""); StarObjectClass model = python._GetObject("pd"); python._Call("import", "sys"); StarObjectClass pythonSys = python._GetObject("sys"); StarObjectClass pythonPath = (StarObjectClass) pythonSys._Get("path"); pythonPath._Call("insert", 0, appFile.getPath()+ File.separator +"python3.7.zip"); pythonPath._Call("insert", 0, appLib); pythonPath._Call("insert", 0, appFile.getPath()); starcore._SRPUnLock(); } private void runPy() { //调用Python代码 Service._DoFile("python", appFile.getPath() + "/py_code.py", ""); long time = python._Calllong("get_time"); Log.d(TAG, "form python time="+time); Service._DoFile("python", appFile.getPath() + "/test.py", ""); int result = python._Callint("add", 5, 2); Log.d(TAG, "result="+result); python._Set("JavaClass", Log.class); Service._DoFile("python", appFile.getPath() + "/calljava.py", ""); } private void copyFile(Activity c, String Name) { File outfile = new File(c.getFilesDir(), Name); BufferedOutputStream outStream = null; BufferedInputStream inStream = null; try { outStream = new BufferedOutputStream(new FileOutputStream(outfile)); inStream = new BufferedInputStream(c.getAssets().open(Name)); byte[] buffer = new byte[1024 * 10]; int readLen = 0; while ((readLen = inStream.read(buffer)) != -1) { outStream.write(buffer, 0, readLen); } } catch (IOException e) { e.printStackTrace(); } finally { try { if (inStream != null) inStream.close(); if (outStream != null) outStream.close(); } catch (IOException e) { e.printStackTrace(); } } } private void copyFileFromSdcard(Activity c, String Name) { File outfile = new File(c.getFilesDir(), Name); BufferedOutputStream outStream = null; BufferedInputStream inStream = null; InputStream redis = null; try { String sdpath = Environment.getExternalStorageDirectory().getAbsolutePath(); String filePath = sdpath +File.separator + Name; redis = new FileInputStream(new File(filePath)); outStream = new BufferedOutputStream(new FileOutputStream(outfile)); inStream = new BufferedInputStream(redis); byte[] buffer = new byte[1024 * 10]; int readLen = 0; while ((readLen = inStream.read(buffer)) != -1) { outStream.write(buffer, 0, readLen); } } catch (IOException e) { e.printStackTrace(); } finally { try { if (inStream != null) inStream.close(); if (outStream != null) outStream.close(); } catch (IOException e) { e.printStackTrace(); } } } @Override protected void onStart() { super.onStart(); Log.d(TAG,"onStart"); } @Override protected void onResume() { super.onResume(); Log.d(TAG,"onResume"); } @Override protected void onPause() { super.onPause(); Log.d(TAG,"onPause"); } @Override protected void onDestroy() { super.onDestroy(); Log.d(TAG,"onDestroy X"); starcore._ModuleClear(); // starcore._ModuleExit(); Log.d(TAG,"onDestroy E"); } }

app的 build.gradle配置：

apply plugin: 'com.android.application' android { compileSdkVersion 25 defaultConfig { applicationId "com.cootf.mytest" minSdkVersion 14 targetSdkVersion 25 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' } } // jni配置 sourceSets { main { jniLibs.srcDirs = ['libs'] } } } dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) implementation 'com.android.support.constraint:constraint-layout:1.1.3' testImplementation 'junit:junit:4.12' androidTestImplementation 'com.android.support.test:runner:1.0.2' androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' }

【本文地址】

公司简介

联系我们