Android Open Source - BTSerialConsole Data Log List Fragment

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From Project

Back to project page BTSerialConsole.

License

The source code is released under:

MIT License

Java Source Code

package com.neykov.bluetoothserialconsole.fragments;
// ww  w .jav  a  2s .c om
import com.neykov.bluetoothserialconsole.R;
import com.neykov.bluetoothserialconsole.R.id;
import com.neykov.bluetoothserialconsole.R.layout;

import android.app.Activity;
import android.app.ListFragment;
import android.bluetooth.BluetoothDevice;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

/**
 * A simple {@link android.support.v4.app.Fragment} subclass. Activities that contain this fragment must implement the
 * {@link DataLogListFragment.OnFragmentInteractionListener} interface to handle interaction events. Use the
 * {@link DataLogListFragment#newInstance} factory method to create an instance of this fragment.
 * 
 */
public class DataLogListFragment extends ListFragment
{
  public static final String TAG = "DataLogListFragment";
  
  private static final String ARGS_BLUETOOTH_DEVICES = "device names";

  private DataLogListListener mListener;
  private DataLogListAdapter mDataLogListAdapter;
  
  /**
   * Use this factory method to create a new instance of this fragment using the provided parameters.
   * 
   * @param param1
   *            Parameter 1.
   * @param param2
   *            Parameter 2.
   * @return A new instance of fragment DataLogListFragment.
   */
  // TODO: Rename and change types and number of parameters
  public static DataLogListFragment newInstance(BluetoothDevice[] dataLogDevices)
  {
    DataLogListFragment fragment = new DataLogListFragment();
    Bundle args = new Bundle();
    args.putSerializable(ARGS_BLUETOOTH_DEVICES,dataLogDevices);
    fragment.setArguments(args);
    return fragment;
  }

  public DataLogListFragment()
  {
    // Required empty public constructor
  }

  @Override
  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    this.setRetainInstance(true);
    
    this.mDataLogListAdapter = new DataLogListAdapter(getActivity());
    
    Bundle args = getArguments();
    if (args != null)
    {
      BluetoothDevice[] devices = (BluetoothDevice[]) args.getSerializable(ARGS_BLUETOOTH_DEVICES);
      mDataLogListAdapter.addAll(devices);
    }
    
    this.setListAdapter(mDataLogListAdapter);
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
  {
    // Inflate the layout for this fragment
    return inflater.inflate(R.layout.fragment_data_log_list, container, false);
  }

  @Override
  public void onAttach(Activity activity)
  {
    super.onAttach(activity);
    try
    {
      mListener = (DataLogListListener) activity;
    } catch (ClassCastException e)
    {
      throw new ClassCastException(activity.toString() + " must implement OnFragmentInteractionListener");
    }
  }

  @Override
  public void onDetach()
  {
    super.onDetach();
    mListener = null;
  }

  @Override
  public void onDestroy()
  {
    super.onDestroy();
    this.mDataLogListAdapter.clear();
  }
  
  public void setListItems(BluetoothDevice[] devices)
  {
    if(devices==null)
    {
      throw new NullPointerException();
    }
    mDataLogListAdapter.clear();
    mDataLogListAdapter.addAll(devices);
  }
  
  public void onListItemClick(ListView l, View v, int position, long id)
  {
    mListener.onDataLogListSelected(((BluetoothDevice)l.getItemAtPosition(position)).getAddress());
  }

  /**
   * This interface must be implemented by activities that contain this fragment to allow an interaction in this
   * fragment to be communicated to the activity and potentially other fragments contained in that activity.
   * <p>
   * See the Android Training lesson <a href=
   * "http://developer.android.com/training/basics/fragments/communicating.html" >Communicating with Other
   * Fragments</a> for more information.
   */
  public interface DataLogListListener
  {
    public void onDataLogListSelected(String deviceId);
  }

  private class DataLogListAdapter extends ArrayAdapter<BluetoothDevice>
  {
    private static final int ID_ROW_LAYOUT = R.layout.data_log_list_item;
    private static final int ID_TEXT_NAME = R.id.datalog_list_item_name;
    private static final int ID_TEXT_ADRESS = R.id.datalog_list_item_adress;
        
    public DataLogListAdapter(Context context)
    {
      super(context, ID_ROW_LAYOUT);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent)
    {
      View rowView = convertView;
      if (rowView == null)
      {
        LayoutInflater inflater =  (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        rowView = inflater.inflate(ID_ROW_LAYOUT,parent,false);
      }
      
      // Set text of views.
      ((TextView) rowView.findViewById(ID_TEXT_NAME)).setText(getItem(position).getName());
      ((TextView) rowView.findViewById(ID_TEXT_ADRESS)).setText(getItem(position).getAddress());
      
      return rowView;
    }
    
  }
  
}

Java Source Code List

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