Android Open Source - atb-mobile Web Service Loader

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License

The source code is released under:

Apache License

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Java Source Code

/*
 * Copyright (C) 2013 Omar BELKHODJA/* w w w .ja v  a 2  s  .  com*/
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.androidinahurry.network.utils;

import android.content.Context;
import android.support.v4.content.AsyncTaskLoader;

public abstract class WebServiceLoader<D> extends AsyncTaskLoader<D> {

  D mData;
  
  protected WebServiceLoader(Context context) {
    super(context);
  }

  @Override
  public void deliverResult(D newData) {
    if (isReset()) {
      releaseResources(newData);
      return;
    }

    D oldData = mData;
    mData = newData;

    if (isStarted()) {
      super.deliverResult(newData);
    }

    if (oldData != null && oldData != newData) {
      releaseResources(oldData);
    }
  }

  @Override
  protected void onStartLoading() {
    if (mData != null) {
      deliverResult(mData);
    }

    if ((mData == null) || (takeContentChanged())) {
      forceLoad();
    }
  }

  @Override
  protected void onStopLoading() {
    cancelLoad();
  }

  @Override
  protected void onReset() {
    onStopLoading();

    if (mData != null) {
      releaseResources(mData);
      mData = null;
    }
  }
  
  @Override
  public void onCanceled(D data) {
    super.onCanceled(data);
    releaseResources(data);
  }
  
  protected void storeLoadedData(D data) {
    mData = data;
  }

  abstract protected void releaseResources(D data);

}

Java Source Code List