Android Open Source - RecipeBook Sync Drive Async Task

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Back to project page RecipeBook.

License

The source code is released under:

Copyright (c) 2013, Ian Lake All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: - Red...

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Java Source Code

package com.ianhanniballake.recipebook.auth;
/*from   w ww . j a  v a 2 s  .co  m*/
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.database.Cursor;
import android.os.AsyncTask;
import android.provider.BaseColumns;
import android.util.Log;

import com.google.android.gms.plus.PlusClient;
import com.google.gson.Gson;
import com.ianhanniballake.recipebook.BuildConfig;
import com.ianhanniballake.recipebook.model.Ingredient;
import com.ianhanniballake.recipebook.model.Instruction;
import com.ianhanniballake.recipebook.model.Recipe;
import com.ianhanniballake.recipebook.provider.RecipeContract;

class SyncDriveAsyncTask extends AsyncTask<PlusClient, Void, Void>
{
  private final WeakReference<Context> contextWeakRef;

  public SyncDriveAsyncTask(final Context context)
  {
    contextWeakRef = new WeakReference<Context>(context);
  }

  @Override
  protected Void doInBackground(final PlusClient... params)
  {
    final Context context = contextWeakRef.get();
    if (context == null)
      return null;
    final Gson gson = new Gson();
    final Cursor cursor = context.getContentResolver().query(RecipeContract.Recipes.CONTENT_URI, null, null, null,
        null);
    while (cursor.moveToNext())
    {
      final Long recipeId = cursor.getLong(cursor.getColumnIndex(BaseColumns._ID));
      final String[] recipeIdArgs = { Long.toString(recipeId) };
      final Cursor ingredientCursor = context.getContentResolver().query(RecipeContract.Ingredients.CONTENT_URI,
          null, RecipeContract.Ingredients.COLUMN_NAME_RECIPE_ID + "=?", recipeIdArgs, null);
      final List<Ingredient> ingredients = new ArrayList<Ingredient>();
      while (ingredientCursor.moveToNext())
        ingredients.add(new Ingredient(ingredientCursor));
      ingredientCursor.close();
      final Cursor instructionCursor = context.getContentResolver().query(
          RecipeContract.Instructions.CONTENT_URI, null,
          RecipeContract.Instructions.COLUMN_NAME_RECIPE_ID + "=?", recipeIdArgs, null);
      final List<Instruction> instructions = new ArrayList<Instruction>();
      while (instructionCursor.moveToNext())
      {
        final String instruction = instructionCursor.getString(instructionCursor
            .getColumnIndex(RecipeContract.Instructions.COLUMN_NAME_INSTRUCTION));
        instructions.add(new Instruction(instruction));
      }
      instructionCursor.close();
      final Recipe recipe = new Recipe(cursor, ingredients, instructions);
      if (BuildConfig.DEBUG)
        Log.d(SyncDriveAsyncTask.class.getSimpleName(), "Recipe " + recipe.getTitle());
      final String recipeJson = gson.toJson(recipe);
      Log.d(SyncDriveAsyncTask.class.getSimpleName(), "To JSON: " + recipeJson);
      Log.d(SyncDriveAsyncTask.class.getSimpleName(), "From JSON: " + gson.fromJson(recipeJson, Recipe.class));
    }
    cursor.close();
    return null;
  }

  @Override
  protected void onPostExecute(final Void params)
  {
    final Context context = contextWeakRef.get();
    if (context == null)
    {
      if (BuildConfig.DEBUG)
        Log.d(SyncDriveAsyncTask.class.getSimpleName(), "Sync completed, but context was null");
      return;
    }
    if (BuildConfig.DEBUG)
      Log.d(SyncDriveAsyncTask.class.getSimpleName(), "Sync completed successfully");
  }

  @Override
  protected void onPreExecute()
  {
    if (BuildConfig.DEBUG)
      Log.d(SyncDriveAsyncTask.class.getSimpleName(), "Starting Sync");
  }
}

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