Android Open Source - openhds-tablet Sync Database Activity

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License

The source code is released under:
OPENHDS PLATFORM OPENSOURCE LICENSE AGREEMENT Copyright (c) 2013 University of Southern Maine. All rights reserved. Redistribution and use in source and binary forms, with or without mo...
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Java Source Code

package org.openhds.mobile.activity;
//  ww w .j a  v a 2  s  . c  o m
import org.openhds.mobile.R;
import org.openhds.mobile.listener.CollectEntitiesListener;
import org.openhds.mobile.task.SyncEntitiesTask;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnCancelListener;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.AsyncTask.Status;
import android.os.Bundle;
import android.os.PowerManager;
import android.preference.PreferenceManager;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class SyncDatabaseActivity extends Activity implements CollectEntitiesListener {
  
  final Context context = this;
    public static final int ENTITY_ACTIVITY = 1;
  
  private ProgressDialog dialog;
  private SharedPreferences settings;
    private SyncEntitiesTask entitiesTask = null;
    private PowerManager.WakeLock wl;
    
    private String url;
    private String username;
    private String password;
    
  @SuppressWarnings("deprecation")
  public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setTitle(getString(R.string.app_name) + " > " + getString(R.string.syncDatabase));
     //setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
     setContentView(R.layout.sync_database);
     
     PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
     wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK, "DoNotDimScreen");
        
       initializeProgressDialog();
       
     settings = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
       url = settings.getString(ServerPreferencesActivity.OPENHDS_KEY_SERVER, getString(R.string.default_openhdsserver));
       username = settings.getString(ServerPreferencesActivity.OPENHDS_KEY_USERNAME, getString(R.string.username));
       password = settings.getString(ServerPreferencesActivity.OPENHDS_KEY_PASSWORD, getString(R.string.password));
       
       Button syncButton = (Button) findViewById(R.id.syncButton);
       syncButton.setOnClickListener(new OnClickListener() {
         public void onClick(View v) {  
           startSync();
         }
       });

  }
  
  private void initializeProgressDialog() {
        dialog = new ProgressDialog(this);
        dialog.setCancelable(true);
        dialog.setOnCancelListener(new MyOnCancelListener());
  }
  
  private void initializeAlertDialog(){
    
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setMessage(getString(R.string.sync_db_stop_sync))
           .setCancelable(false)
           .setPositiveButton(getString(R.string.yes_lbl), new DialogInterface.OnClickListener() {
               public void onClick(DialogInterface d, int id) {
                 entitiesTask.cancel(true); 
                 finish();
             Toast.makeText(getApplicationContext(),  getString(R.string.sync_interrupted), Toast.LENGTH_SHORT).show();
             
               }
           })
           .setNegativeButton(getString(R.string.no_lbl), new DialogInterface.OnClickListener() {
               public void onClick(DialogInterface d, int id) {
                    //dialog.cancel();
              Toast.makeText(getApplicationContext(),  getString(R.string.sync_restarting), Toast.LENGTH_SHORT).show();
             startSync();
              dialog.show();
              //entitiesTask.execute();
               }
           });
    AlertDialog alert = builder.create();
    alert.show();
  }
  
  private void startSync() {

    if (entitiesTask == null) {
      dialog.setTitle(getString(R.string.dialog_working_lbl));
      dialog.setMessage(getString(R.string.dialog_dont_interrupt_lbl));
      dialog.show();
      
      entitiesTask = new SyncEntitiesTask(url, username, password,
          dialog, getBaseContext(), SyncDatabaseActivity.this);
    }
    if (entitiesTask.getStatus() == Status.PENDING)
      entitiesTask.execute();

  }
  
  @Override
  protected void onPause() {
    super.onPause();
    wl.release();
    if (entitiesTask != null)
      entitiesTask.cancel(true);
  }
  
  @Override
  protected void onResume() {
    super.onResume();
    wl.acquire();
  }
    
  @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
        super.onActivityResult(requestCode, resultCode, intent);
      initializeProgressDialog();

        if (resultCode == RESULT_CANCELED) {
            // request was canceled, so do nothing
            return;
        }

        switch (requestCode) {
            case ENTITY_ACTIVITY:
              break;
        }
    }

  public void collectionComplete(Boolean result) {
    if (result) 
      Toast.makeText(getApplicationContext(),  getString(R.string.sync_entities_successful), Toast.LENGTH_LONG).show();
    else 
      Toast.makeText(getApplicationContext(), getString(R.string.sync_entities_failure), Toast.LENGTH_LONG).show();
    entitiesTask = null;
    dialog.dismiss();
  }
    
  private class MyOnCancelListener implements OnCancelListener {
    public void onCancel(DialogInterface dialog) {
      if (entitiesTask != null){
        dialog.dismiss();
        initializeAlertDialog();
      }
    }  
  }
}
Java Source Code List
