利用Chaquopy实现基于Android Studio的Android-Python 混合开发

package com.example.myapplication; import androidx.appcompat.app.AppCompatActivity; import android.content.Intent; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.net.Uri; import android.os.Bundle; import android.provider.MediaStore; import android.view.View; import android.widget.*; import com.chaquo.python.Kwarg; import com.chaquo.python.PyObject; import com.chaquo.python.Python; import com.chaquo.python.android.AndroidPlatform; public class MainActivity extends AppCompatActivity { private static int IMAGE_REQUEST_CODE =1; private Button take_button; private Button text_button; private ImageView imageView; private String paths; private TextView textView; private TextView outputText; private EditText inputText; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textView = (TextView)findViewById(R.id.textView); outputText = (TextView)findViewById(R.id.OutputText); inputText = (EditText)findViewById(R.id.InputText); take_button = (Button)findViewById(R.id.take_button); text_button = (Button)findViewById(R.id.text_button); imageView = (ImageView)findViewById(R.id.ivView); take_button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { getPhoto(); } }); text_button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { textRecognition(); } }); initPython(); } private void textRecognition(){ try { Python py = Python.getInstance(); PyObject obj = py.getModule("main").callAttr("str_test",new Kwarg("tiles_str",inputText.getText().toString())); String text = obj.toJava(String.class); outputText.setText(text); }catch (Exception e){ e.printStackTrace(); outputText.setText("输入的参数应为14个"); } } private void getPhoto(){ //在这里跳转到手机系统相册里面 Intent intent = new Intent( Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); startActivityForResult(intent, IMAGE_REQUEST_CODE); } // 初始化Python环境 private void initPython(){ if (! Python.isStarted()) { Python.start(new AndroidPlatform(this)); } } // private Bytes textTest(String p){ // // // return py_photo; // } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == IMAGE_REQUEST_CODE && resultCode == RESULT_OK) { try { Uri selectedImage = data.getData(); //获取系统返回的照片的Uri String[] filePathColumn = {MediaStore.Images.Media.DATA}; Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);//从系统表中查询指定Uri对应的照片 cursor.moveToFirst(); int columnIndex = cursor.getColumnIndex(filePathColumn[0]); paths = cursor.getString(columnIndex); //获取照片路径 cursor.close(); // PyObject obj = py.getModule("process").callAttr("test",new Kwarg("a",3)); // Integer a = obj.toJava(Integer.class); // textView.setText(a+""); Python py = Python.getInstance(); PyObject obj = py.getModule("process").callAttr("photo",new Kwarg("jpg",paths)); byte[] py_photo =obj.toJava(byte[].class); int len=py_photo.length; Bitmap bitmap = BitmapFactory.decodeByteArray(py_photo, 0, len); imageView.setImageBitmap(bitmap); } catch (Exception e) { e.printStackTrace(); } } } }