Android Open Source - AndroidGridImageSearch Search Activity

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From Project

Back to project page AndroidGridImageSearch.

License

The source code is released under:

MIT License

Java Source Code

package net.julienlecomte.gridimagesearch;
//from   w  w  w  . ja v  a 2 s . com
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;

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

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
// import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.GridView;
import android.widget.Toast;

import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.JsonHttpResponseHandler;

public class SearchActivity extends Activity {
  public static final String SETTINGS_FILE_NAME = "settings";

  EditText etSearchBox;
  Button btnSearch;
  GridView gvResults;
  ArrayList<ImageResult> results;
  ImageResultArrayAdapter adapter;
  String query = "";
  SearchSettings settings;

  private final int SETTINGS_ACTIVITY_REQUEST_CODE = 50; 

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_search);

    setupViews();

    try {
      loadSettings();
    } catch (Exception e) {
      settings = new SearchSettings();
    }

    results = new ArrayList<ImageResult>();
    adapter = new ImageResultArrayAdapter(this, results);
    gvResults.setAdapter(adapter);

    gvResults.setOnScrollListener(new EndlessScrollListener() {
      @Override
      public void onLoadMore(int page, int totalItemsCount) {
        search(totalItemsCount);
      }
    });

    gvResults.setOnItemClickListener(new OnItemClickListener() {
      @Override
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        ImageResult target = results.get(position);
        Intent i = new Intent(getApplicationContext(), ImageDisplayActivity.class);
        i.putExtra("image", target);
        startActivity(i);
      }
    });
  }

  protected void setupViews() {
    etSearchBox = (EditText) findViewById(R.id.etSearchBox);
    btnSearch = (Button) findViewById(R.id.btnSearch);
    gvResults = (GridView) findViewById(R.id.gvResults);
  }

  void loadSettings() throws Exception {
    FileInputStream fis = this.openFileInput(SETTINGS_FILE_NAME);
    ObjectInputStream is = new ObjectInputStream(fis);
    settings = (SearchSettings) is.readObject();
    is.close();
  }

  void storeSettings() throws Exception {
    FileOutputStream fos = this.openFileOutput(SETTINGS_FILE_NAME, Context.MODE_PRIVATE);
    ObjectOutputStream os = new ObjectOutputStream(fos);
    os.writeObject(settings);
    os.close();
  }

  public void onSearchButtonClick(View v) {
    String s = etSearchBox.getText().toString().trim();

    if (s.equals(query)) {
      return;
    }

    query = s;
    adapter.clear();

    if (query.length() > 0) {
      Toast.makeText(this, "Searching for " + query,  Toast.LENGTH_SHORT).show();
      search(0);
    }
  }

  public void search(int offset) {
    AsyncHttpClient http = new AsyncHttpClient();

    String url = "https://ajax.googleapis.com/ajax/services/search/images?v=1.0&rsz=8" +
        "&start=" + offset +
        "&q=" + Uri.encode(query);

    switch (settings.imageSize) {
    case LARGE:
      url += "&imgsz=large";
      break;
    case MEDIUM:
      url += "&imgsz=medium";
      break;
    case SMALL:
      url += "&imgsz=small";
      break;
    default:
      break;
    }

    switch (settings.imageColor) {
    case BlACK_AND_WHITE_ONLY:
      url += "&imgc=gray";
      break;
    case COLOR_ONLY:
      url += "&imgc=color";
      break;
    default:
      break;
    }

    if (settings.safesearch) {
      url += "&safe=active";
    }

    http.get(url,
        new JsonHttpResponseHandler() {
          @Override
          public void onSuccess(JSONObject response) {
            JSONArray jsonResults = null;
            try {
              jsonResults = response.getJSONObject("responseData").getJSONArray("results");
              adapter.addAll(ImageResult.fromJSONArray(jsonResults));
              // Log.d("DEBUG", results.toString());
            } catch (JSONException e) {
              e.printStackTrace();
            }
          }
        });
  }

  @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.search_menu, menu);
        return true;
    }

  public void onSettings(MenuItem mi) {
    Toast.makeText(this, "Clicked", Toast.LENGTH_SHORT).show();
    Intent i = new Intent(this, SettingsActivity.class);
    i.putExtra("settings", settings);
    startActivityForResult(i, SETTINGS_ACTIVITY_REQUEST_CODE);
  }

  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == SETTINGS_ACTIVITY_REQUEST_CODE) {
      settings = (SearchSettings)data.getSerializableExtra("settings");
      if (query.length() > 0) {
        // TODO: refresh...
      }
    }
  }

  public void onClear(View v) {
    query = "";
    etSearchBox.setText(query);
    adapter.clear();
  }
}

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