Android Open Source - android-training-tutorial Main Activity

• Back to Development/tutorial  ↑

From Project

Back to project page android-training-tutorial.

License

The source code is released under:

MIT License

Java Source Code

package im.ene.pinnedheaderlistviewsample;
//  w  w  w .ja va 2s  .c o m
import java.util.ArrayList;
import java.util.List;

import com.hb.views.PinnedSectionListView.PinnedSectionListAdapter;

import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends Activity {

  private ListView mListView;
  private Context mContext;

  private List<Items> mItemList;

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

    mContext = this;
    mListView = (ListView) findViewById(android.R.id.list);
    mItemList = new ArrayList<MainActivity.Items>();

    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));
    mItemList.add(new Items("top", "bot"));

    mListView.setAdapter(new CustomListAdapter(mContext,
        android.R.layout.simple_list_item_1, mItemList));
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {

    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
      return true;
    }
    return super.onOptionsItemSelected(item);
  }

  public class Items {
    public String top;
    public String bot;

    public Items(String top, String bot) {
      this.top = top;
      this.bot = bot;
    }
  }

  public class ListItemViewHolder {
    public TextView mTopText;
    public TextView mBotText;
  }

  public class CustomListAdapter extends ArrayAdapter<Items> implements
      PinnedSectionListAdapter {

    private Context mContext;
    private LayoutInflater mInflater;
    private List<Items> mList;

    public CustomListAdapter(Context context, int resource, List<Items> list) {
      super(context, resource, list);
      mContext = context;
      mInflater = (LayoutInflater) mContext
          .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
      mList = list;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      final ListItemViewHolder mViewHolder;
      View view;

      if (position % 5 == 0) {
        view = mInflater.inflate(android.R.layout.simple_list_item_1,
            parent, false);
        
        TextView mText = (TextView) view;
        mText.setText("section " + position / 5);
        mText.setTextColor(Color.YELLOW);
        mText.setGravity(Gravity.CENTER);
        
        view.setBackgroundColor(Color.BLACK);
        view.setTag(-1, -1);
      } else {
        view = convertView;

        if (convertView == null) {
          view = mInflater.inflate(R.layout.list_item_layout, parent,
              false);
          mViewHolder = new ListItemViewHolder();
          mViewHolder.mTopText = (TextView) view
              .findViewById(R.id.item_top_text);
          mViewHolder.mBotText = (TextView) view
              .findViewById(R.id.item_bot_text);

          view.setTag(mViewHolder);

        } else {
          mViewHolder = (ListItemViewHolder) view.getTag();
        }

        final Items item = mList.get(position);
        mViewHolder.mTopText.setText(item.top);
        mViewHolder.mBotText.setText(item.bot);

      }

      return view;
    }

    @Override
    public int getViewTypeCount() {
      return 2;
    }

    @Override
    public int getItemViewType(int position) {
      if (position % 5 == 0)
        return -1;
      else
        return 0;
    }

    @Override
    public boolean isItemViewTypePinned(int viewType) {
      return viewType == -1;
    }

  }
}

Java Source Code List

• Back to Development/tutorial  ↑