This example shows how to run python script from flutter.
This example is based on starcore_for_flutter, which enables flutter calls other scripts.
Step by Step
1. Create flutter project
$ flutter create flutter_python 2. Add dependency package “starflut” and assets folder
Edit “pubspec.yaml”
dependencies: flutter: sdk: flutter starflut: any ... # To add assets to your application, add an assets section, like this: assets: - starfiles/ 3. Create “starfiles” folder at project root, and add file “python3.6.zip”
4. Create “assets” and “jniLibs”, and add python share libraries for android
5. dart code
- Initialize starcore
StarCoreFactory starcore = await Starflut.getFactory(); StarServiceClass Service = await starcore.initSimple("test", "123", 0, 0, []); - Register callback function
await starcore.regMsgCallBackP( (int serviceGroupID, int uMsg, Object wParam, Object lParam) async{ if( uMsg == Starflut.MSG_DISPMSG || uMsg == Starflut.MSG_DISPLUAMSG ){ ShowOutput(wParam); } print("$serviceGroupID $uMsg $wParam $lParam"); return null; }); In callback function, we capture the output from python, and show it in text window.
void ShowOutput(String Info) async{ if( Info == null || Info.length == 0) return; _outputString = _outputString + "\n" + Info; setState((){ }); } - Initialize python
for android, before run python, share libraries must be copied to app’s local folder.
bool isAndroid = await Starflut.isAndroid(); if( isAndroid == true ){ String libraryDir = await Starflut.getNativeLibraryDir(); String docPath = await Starflut.getDocumentPath(); if( libraryDir.indexOf("arm64") > 0 ){ Starflut.unzipFromAssets("lib-dynload-arm64.zip", docPath, true); }else if( libraryDir.indexOf("x86_64") > 0 ){ Starflut.unzipFromAssets("lib-dynload-x86_64.zip", docPath, true); }else if( libraryDir.indexOf("arm") > 0 ){ Starflut.unzipFromAssets("lib-dynload-armeabi.zip", docPath, true); }else{ //x86 Starflut.unzipFromAssets("lib-dynload-x86.zip", docPath, true); } await Starflut.copyFileFromAssets("python3.6.zip", "flutter_assets/starfiles",null); //desRelatePath must be null } Initialize python
if( await srvGroup.initRaw("python36", Service) == true ){ _outputString = "init starcore and python 3.6 successfully"; _isButtonDisabled = false; }else{ _outputString = "init starcore and python 3.6 failed"; } - Input and run python scrript
void runScriptCode() async{ if( myController.text.length == 0 ) return; await srvGroup.runScript("python", myController.text, null); setState((){ }); } 6. compile for ios
$ flutter clean $ export STARCORE_PATH='/Users/srplab/Desktop' $ export STARCORE_PYTHONVERSION='3.6' $ export STARCORE_PYTHONLIBRARY='star_python36,python3.6m' $ flutter build ios --no-codesign 7. screenshot
