Android Open Source - KnightNews_Android Home Activity

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License

The source code is released under:
Copyright (c) 2014, James Van Gaasbeck All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are m...
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Java Source Code

package knightnews.android;
//from   w  ww  .ja  v  a2  s. c  om
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.Toast;

import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.parse.ParseAnalytics;
import com.squareup.picasso.Picasso;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.List;


public class HomeActivity extends ActionBarActivity {
  private static final String TAG = "HomeActivity";

  public static final String ERROR_IMAGE = "error_image";

  private static final String URL_JSON_HOME_ACTIVITY =
      "http://knightnews.com/api/get_recent_posts/?count=5";
  private static final String STATE_NEWS_POSITION = "com.sigmobile.ucf_news.HomeActivity" +
      ".STATE_NEWS_POSITION";
  private static final String STATE_NEWS_URL_LIST = "com.sigmobile.ucf_news.HomeActivity" +
      ".STATE_NEWS_URL_LIST";
  private static final String STATE_ATHLETICS_POSITION = "com.sigmobile.ucf_news" +
      ".HomeActivity.STATE_ATHLETICS_POSITION";
  private static final String STATE_EVENTS_POSITION = "com.sigmobile.ucf_news" +
      ".HomeActivity.STATE_EVENTS_POSITION";

  private ImageView mImageButtonText, mImageButtonMap,
      mImageButtonEvents, mImageButtonSports;
  private ImageView mImageButtonNews;
  private ArrayList<String> mListOfImageUrls;
  private Context mContext;
  private int i = 0,
      j = 0,
      k = 0;

  //drawable resources for populating the "Athletics" imageView
  private final int[] mAthleticsDrawables = {R.drawable.footballucftoday_png,
      R.drawable.baseball_field_png,
      R.drawable.stadium1_png};
  //drawable resources for populating the "events" imageView
  private final int[] mEventsDrawables = {R.drawable.events_knitro,
      R.drawable.events_beach,
      R.drawable.events_splash};


  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_home);


    ParseAnalytics.trackAppOpened(getIntent());

    mContext = this;
    mListOfImageUrls = new ArrayList<String>();

    if (savedInstanceState != null) {
      mListOfImageUrls = savedInstanceState.getStringArrayList(STATE_NEWS_URL_LIST);
      i = savedInstanceState.getInt(STATE_NEWS_POSITION, 0);
      j = savedInstanceState.getInt(STATE_ATHLETICS_POSITION, 0);
      k = savedInstanceState.getInt(STATE_EVENTS_POSITION, 0);
      swapPictureAfterInterval();

    } else {
      fetchNewsItems();
    }

    mImageButtonNews = (ImageView) findViewById(R.id.home_imageButton_one);
    mImageButtonNews.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View v) {
        //News

        Intent i = new Intent(mContext,
            FeedListActivity.class);
        startActivity(i);
      }
    });
    //TextView textNews = (TextView)findViewById(R.id.newsText);

    mImageButtonText = (ImageView) findViewById(R.id.home_imageButton_two);
    //Picasso.with(this).load(R.drawable.tip96).fit().into(mImageButtonText);
    mImageButtonText.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View v) {
        //Text a tip
        Uri smsToUri = Uri.parse("smsto:" + "4075847823");
        Intent returnIt = new Intent(Intent.ACTION_SENDTO, smsToUri);
        returnIt.putExtra("sms_body", "Tip for KnightNews: ");
        returnIt.putExtra("exit_on_sent", true);

        PackageManager manager = getPackageManager();
        List<ResolveInfo> activities = manager.queryIntentActivities(
            returnIt, 0);
        if (!manager.hasSystemFeature(PackageManager.FEATURE_TELEPHONY)) {
          Toast.makeText(
              mContext,
              "Sorry, there were no apps that worked with that request.",
              Toast.LENGTH_SHORT).show();
        } else if (activities != null && activities.size() > 0) {
          startActivity(returnIt);
        } else {
          Toast.makeText(
              mContext,
              "Sorry, there were no apps that worked with that request.",
              Toast.LENGTH_SHORT).show();
        }
      }
    });

    mImageButtonEvents = (ImageView) findViewById(R.id.home_imageButton_three);
    mImageButtonEvents.setImageResource(mEventsDrawables[0]);
    mImageButtonEvents.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View v) {
        //Events
        Intent i = new Intent(mContext,
            EventsActivity.class);
        startActivity(i);
      }
    });

    mImageButtonMap = (ImageView) findViewById(R.id.home_imageButton_four);
    Picasso.with(this).load(R.drawable.map).fit().into(mImageButtonMap);
    mImageButtonMap.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View v) {
        //Map
        Intent i = new Intent(mContext,
            UcfMapActivity.class);
        startActivity(i);
      }
    });

    mImageButtonSports = (ImageView) findViewById(R.id.home_imageButton_five);
    mImageButtonSports.setImageResource(mAthleticsDrawables[0]);
    mImageButtonSports.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View v) {
        //Sports WebView
        Intent i = new Intent(mContext,
            SportsActivity.class);
        startActivity(i);
      }
    });
  }

  @Override
  public void onDestroy() {
    RequestManager.getInstance(this).cancelRequestByTag(TAG);
    mContext = null;
    super.onDestroy();
  }

  @Override
  protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    outState.putStringArrayList(STATE_NEWS_URL_LIST, mListOfImageUrls);
    outState.putInt(STATE_NEWS_POSITION, i);
    outState.putInt(STATE_ATHLETICS_POSITION, j);
    outState.putInt(STATE_EVENTS_POSITION, k);

  }

  private void setUpUi(int imagePosition, int athleticsPosition, int eventsPosistion) {
    if (mListOfImageUrls != null && mListOfImageUrls.size() > 0) {

      if (!mListOfImageUrls.get(imagePosition).equals(HomeActivity.ERROR_IMAGE)) {
        Picasso.with(this).load(mListOfImageUrls.get(imagePosition)).fit()
               .error(R.drawable
                   .news_error)
               .into(mImageButtonNews);
      } else {
        mImageButtonNews.setImageResource(R.drawable.news_error);
      }

    } else {
      mImageButtonNews.setImageResource(R.drawable.news_error);
    }

    if (mAthleticsDrawables != null) {
      mImageButtonSports.setImageResource(mAthleticsDrawables[athleticsPosition]);
    }
    if (mEventsDrawables != null) {
      mImageButtonEvents.setImageResource(mEventsDrawables[eventsPosistion]);
    }
  }

  private void swapPictureAfterInterval() {
    final Handler handler = new Handler();
    Runnable runnable = new Runnable() {

      public void run() {
        if (i >= mListOfImageUrls.size()) {
          i = 0;
        }
        if (j >= mAthleticsDrawables.length) {
          j = 0;
        }
        if (k >= mEventsDrawables.length) {
          k = 0;
        }
        setUpUi(i++, j++, k++);
        handler.postDelayed(this, 4500);  //for interval...
      }
    };
    handler.postDelayed(runnable, 0); //for initial delay..
  }

  private void fetchNewsItems() {
    JsonObjectRequest mRequest = new JsonObjectRequest(URL_JSON_HOME_ACTIVITY, null,
        new Response.Listener<JSONObject>() {
          @Override
          public void onResponse(JSONObject response) {//
            // VolleyLog.v("Response:%n %s", response.toString(4));
//                            Log.i(TAG, "Response: " + response.toString());

            parseJSON(response);
            swapPictureAfterInterval();
          }
        }, new Response.ErrorListener() {
      @Override
      public void onErrorResponse(VolleyError error) {
        //VolleyLog.e("Error: ", error.getMessage());
      }
    }
    );
    RequestManager.getInstance(this).addToRequestQueue(mRequest, TAG);
  }

  private void parseJSON(JSONObject response) {
    if (response == null) {
      return;
    }

    try {
      JSONArray posts = response.getJSONArray("posts");

      for (int i = 0; i < posts.length(); i++) {
        JSONObject p = posts.getJSONObject(i);

        JSONObject customFields = p.getJSONObject("custom_fields");
        String img = customFields.optString("image", HomeActivity.ERROR_IMAGE);

        StoryItem item = new StoryItem();
        item.setPictureUrl(img);
        mListOfImageUrls.add(item.getPictureUrl());

        //Log.d(TAG, "ImageURLS: " + item.getPictureUrl());
      }
    } catch (JSONException e) {
      e.printStackTrace();
    }
  }

}
Java Source Code List
