<intent-filter>
        <action android:name="android.intent.action.VIEW" />
        <category android:name="android.intent.category.DEFAULT" />
        <data android:mimeType="application/com.gmail.heagoo.apkeditor-translate" />
    </intent-filter>

package com.gmail.heagoo.apkeditor.translate;
 
import java.io.Serializable;

public class TranslateItem implements Serializable {
 
    private static final long serialVersionUID = -3101805950698159689L;
    public String name;
    public String originValue;
    public String translatedValue;
 
    public TranslateItem(String _n, String _o) {
       this.name = _n;
       this.originValue = _o;
    }
 
    public TranslateItem(String _n, String _o, String _t) {
       this.name = _n;
       this.originValue = _o;
       this.translatedValue = _t;
    }
}

    @Override
    protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       // ...
       Intent intent = getIntent();
       Bundle bundle = intent.getExtras();
       // Target language code like "-de"
       this.targetLanguageCode = bundle.getString("targetLanguageCode");
       // Translated items are also passed, so that we can revise it
       this.translatedFilePath = bundle.getString("translatedList_file");
       this.translatedList = (List<TranslateItem>) readObjectFromFile(translatedFilePath);
       // Untranslated items, which are to be translated
       String path =bundle.getString("untranslatedList_file");
       this.untranslatedList = (List<TranslateItem>) readObjectFromFile(path);
       // ...
    }
 
    public static Object readObjectFromFile(String filePath) {
       Object result = null;
       File file = new File(filePath);
       ObjectInputStream objIn = null;
       try {
           objIn = new ObjectInputStream(new FileInputStream(file));
           result = objIn.readObject();
       } catch (IOException e) {
           e.printStackTrace();
       } catch (ClassNotFoundException e) {
           e.printStackTrace();
       } finally {
           closeWithoutThrow(objIn);
       }
       return result;
    }

    private void setResult(List<TranslateItem> stringValues) {
       Intent intent = new Intent();
       intent.putExtra("targetLanguageCode", this.targetLanguageCode);
       writeObjectToFile(this.translatedFilePath, stringValues);
       intent.putExtra("translatedList_file", this.translatedFilePath);
 
       this.setResult(RESULT_OK, intent);
    }
 
    public static void writeObjectToFile(String filePath, Object obj) {
       File file = new File(filePath);
       ObjectOutputStream objOut = null;
       try {
           objOut = new ObjectOutputStream(new FileOutputStream(file));
           objOut.writeObject(obj);
           objOut.flush();
       } catch (IOException e) {
           e.printStackTrace();
       } finally {
           closeWithoutThrow(objOut);
       }
    }