nani/app

Julien LepillerSat Jun 25 23:44:09+0200 2022

ebfd268

Replace deprecated AsyncTask

app/src/main/java/eu/lepiller/nani/DictionaryActivity.java

 import android.app.Activity;
 import android.content.Intent;
 import android.os.AsyncTask;
 import android.os.Bundle;
 import androidx.activity.result.contract.ActivityResultContracts;
     List<String> langs;
     String selectedLanguage = "";
     private SwipeRefreshLayout refresher;
     private DownloadThread downloadThread;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
     }
     private void refresh() {
         new DownloadTask().execute();
         if(downloadThread == null)
             downloadThread = new DownloadThread();
         downloadThread.start();
     }
     private void setObserver() {
         LiveData<Boolean> data = DownloadTask.getRefreshingData();
         if(downloadThread == null)
             return;
         LiveData<Boolean> data = downloadThread.getRefreshingData();
         data.observe(this, refreshing -> {
             refresher.setRefreshing(refreshing);
             if(!refreshing)
     }
     private void unsetObserver() {
         LiveData<Boolean> data = DownloadTask.getRefreshingData();
         if(downloadThread == null)
             return;
         LiveData<Boolean> data = downloadThread.getRefreshingData();
         data.removeObservers(this);
     }
     private static class DownloadTask extends AsyncTask<String, Integer, Integer> {
         final private static MutableLiveData<Boolean> refreshing = new MutableLiveData<>();
     private class DownloadThread extends Thread {
         final private MutableLiveData<Boolean> refreshing = new MutableLiveData<>();
         static LiveData<Boolean> getRefreshingData() {
         LiveData<Boolean> getRefreshingData() {
             return refreshing;
         }
         @Override
         protected Integer doInBackground(String... strings) {
         public void run() {
             refreshing.postValue(true);
             update();
             refreshing.setValue(false);
         }
         private void update() {
             try {
                 URL url = DictionaryFactory.getListUrl();
                 HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                     byte[] data = new byte[4096];
                     FileOutputStream output = new FileOutputStream(file);
                     while((count = input.read(data)) != -1) {
                         if (isCancelled()) {
                             input.close();
                             return null;
                         }
                         output.write(data, 0, count);
                     }
                 } else {
                     return R.string.error_dico_not_found;
                     postResult(R.string.error_dico_not_found);
                 }
             } catch (MalformedURLException e) {
                 e.printStackTrace();
                 return R.string.error_dico_url;
                 postResult(R.string.error_dico_url);
             } catch (IOException e) {
                 e.printStackTrace();
                 return R.string.error_dico_io;
                 postResult(R.string.error_dico_io);
             }
             return null;
         }
         @Override
         protected void onPostExecute(Integer i) {
             super.onPostExecute(i);
             refreshing.setValue(false);
         protected void postResult(Integer i) {
             runOnUiThread(() -> postMessage(i));
         }
     }
     private void postMessage(Integer i) {
         Snackbar.make(findViewById(R.id.dictionary_view), getString(i), Snackbar.LENGTH_LONG).show();
         refresh();
     }
     private void updateDataSet() {
         DictionaryFactory.updatePackageList();
         dictionaries.clear();