Android Open Source - android-http Start Activity

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License

The source code is released under:
Apache License
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Java Source Code

/*
 * Copyright (C) 2012, 2013 the diamond:dogs|group
 */* w  w  w.  j  a  va2 s. c  o  m*/
 * 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 at.diamonddogs.example.http.activity;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import at.diamonddogs.example.http.R;
import at.diamonddogs.example.http.dataobject.Example;

/**
 * A simple {@link Activity} that lists all examples included in this app
 */
public class StartActivity extends Activity {
  private ListView list;
  private ExampleAdapter adapter;

  /**
   * {@inheritDoc}
   */
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.startactivity);
    list = (ListView) findViewById(R.id.startactivity_listview);
    adapter = new ExampleAdapter(this);
    adapter.add(new Example("HttpExampleActivity",
        "Explains how to issue, process and handle asynchronous and synchronous webrequests.", HttpExampleActivity.class));
    adapter.add(new Example("HttpServiceAssisterExampleActivity", "Explains how to use the HttpServiceAssister",
        HttpServiceAssisterExampleActivity.class));
    adapter.add(new Example("HttpOrderedAsyncAssisiterExampleActivity",
        "Shows how to send ordered, conditional, asynchronous Webrequests", HttpOrderedAsyncAssisiterExampleActivity.class));
    adapter.add(new Example("CachingExampleActivity", "Demonstrates cached Webrequests", CachingExampleActivity.class));
    adapter.add(new Example("NonTimeCriticalTasks", "Shows how to use the API that handles non time critical tasks",
        NonTimeCriticalExampleActivity.class));
    adapter.add(new Example("ImageLoadingExampleListActivity", "Shows how to work with images in lists",
        ImageLoadingExampleListActivity.class));
    list.setAdapter(adapter);
    list.setOnItemClickListener(new OnItemClickListener() {

      @Override
      public void onItemClick(AdapterView<?> list, View view, int position, long id) {
        Intent i = new Intent(StartActivity.this, adapter.getItem(position).getActivityClass());
        startActivity(i);
      }
    });
  }

  private static final class ExampleAdapter extends ArrayAdapter<Example> {

    /**
     * @param context
     *            a {@link Context}
     */
    public ExampleAdapter(Context context) {
      super(context, android.R.layout.simple_list_item_2);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      ViewHolder h;
      if (convertView == null) {
        convertView = LayoutInflater.from(getContext()).inflate(android.R.layout.simple_list_item_2, parent, false);
        h = new ViewHolder();
        h.t1 = (TextView) convertView.findViewById(android.R.id.text1);
        h.t2 = (TextView) convertView.findViewById(android.R.id.text2);
        convertView.setTag(h);
      } else {
        h = (ViewHolder) convertView.getTag();
      }
      Example item = getItem(position);
      h.t1.setText(item.getName());
      h.t2.setText(item.getDescription());
      return convertView;
    }

    private static final class ViewHolder {
      private TextView t1;
      private TextView t2;
    }
  }
}
Java Source Code List
