Android Open Source - SimpleReader Feed Category Activity

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License

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

package com.dreamteam.app.ui;
//w w  w.  j a v  a 2  s .c o  m
import java.util.ArrayList;
import java.util.List;

import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import com.dreamteam.app.adapter.FeedCategoryAdapter;
import com.dreamteam.app.config.Contants;
import com.dreamteam.app.db.provider.RSSFeedCategoryProvider;
import com.dreamteam.app.entity.RSSFeedCategroy;
import com.dreamteam.app.utils.Logger;
import com.dreateam.app.ui.R;

public class FeedCategoryActivity extends BaseActivity implements
    LoaderManager.LoaderCallbacks<Cursor> {

  private ListView categoryList;
  private ImageButton mLeftButton;
  private ImageButton mRightButton;
  private TextView mCenterTitle;
  private List<RSSFeedCategroy> categories;
  private FeedCategoryAdapter adapter;
  private LoaderManager loaderManager;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    initProperties();
    initView();
    initData();
  }

  private void initProperties() {
    categories = new ArrayList<RSSFeedCategroy>();
    adapter = new FeedCategoryAdapter(this, categories);
    loaderManager = getSupportLoaderManager();
  }

  private void initView() {
    setContentView(R.layout.feed_category);

    mLeftButton = (ImageButton) findViewById(R.id.common_left_button);
    mRightButton = (ImageButton) findViewById(R.id.common_right_button);
    mCenterTitle = (TextView) findViewById(R.id.common_center_text);
    categoryList = (ListView) findViewById(R.id.feed_category_lsit);

    mCenterTitle.setText(R.string.feed_center);
    
    mRightButton.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        Toast.makeText(FeedCategoryActivity.this, "???????",
            Toast.LENGTH_SHORT).show();
      }
    });
    mLeftButton.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        finish();
      }
    });

    categoryList.setAdapter(adapter);
    categoryList.setOnItemClickListener(new OnItemClickListener() {
      @Override
      public void onItemClick(AdapterView<?> parent, View view,
          int position, long id) {
        Intent intent = new Intent();
        intent.putExtra("tname", categories.get(position).getTname());
        intent.setClass(FeedCategoryActivity.this,
            CategoryDetailActivity.class);
        FeedCategoryActivity.this.startActivity(intent);
      }
    });
  }
  
  private void initData() {
    loaderManager.initLoader(Contants.LOADER_CATEGORY, null, this);
  }

  // ///////////////////// load manager //////////////////////////////////
  @Override
  public Loader<Cursor> onCreateLoader(int id, Bundle data) {
    Logger.debug("tangl", "start loader manager");
    Uri uri = Uri
        .parse("content://com.dreateam.app.ui.provider.category/categories");
    CursorLoader loader = new CursorLoader(this, uri, null, null, null,
        null);
    return loader;
  }

  @Override
  public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
    Logger.debug("tangl", "finish loader manager");
    if (cursor != null) {
      while (cursor.moveToNext()) {
        RSSFeedCategroy category = new RSSFeedCategroy();
        category.setId((cursor.getInt(cursor
            .getColumnIndex(RSSFeedCategoryProvider.KEY_ID))));
        category.setTitle(cursor.getString(cursor
            .getColumnIndex(RSSFeedCategoryProvider.KEY_TITLE)));
        category.setTname(cursor.getString(cursor
            .getColumnIndex(RSSFeedCategoryProvider.KEY_TABLE)));
        category.setDescription(cursor.getString(cursor
            .getColumnIndex(RSSFeedCategoryProvider.KEY_DESCRIPTION)));
        category.setImagUrl(cursor.getString(cursor
            .getColumnIndex(RSSFeedCategoryProvider.KEY_IMAGEURL)));
        categories.add(category);
      }
    }
    cursor.close();
    Logger.debug("tangl", categories.size() + "");
    adapter.bindData(categories);
    adapter.notifyDataSetChanged();
  }

  @Override
  public void onLoaderReset(Loader<Cursor> loader) {

  }
  // ///////////////////// load manager end //////////////////////////////////

}
Java Source Code List
