Android Open Source - opentraining Spinner Data Fragment

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License

The source code is released under:

GNU General Public License

Java Source Code

/**
 * /*from ww  w . j a v  a  2  s .co m*/
 * This is OpenTraining, an Android application for planning your your fitness training.
 * Copyright (C) 2012-2014 Christian Skubich
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 */


package de.skubware.opentraining.activity.create_exercise;

import java.util.List;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import de.skubware.opentraining.R;
import de.skubware.opentraining.basic.Muscle;
import de.skubware.opentraining.basic.Translatable;

/**
 * Another abstraction level between real fragments and {@link SimpleDataFragment}.
 * Used for choosing a objects that extend {@link Translatable}s, e.g. {@link Muscle} or {@link SportsEquipment}.
 * 
 * Contract:
 *   - Spinner with the ID "spinner"
 *   - remember to obey the contract of {@link SimpleDataFragment}
 */
@SuppressWarnings("unchecked")
public abstract class SpinnerDataFragment<T extends Translatable> extends SimpleDataFragment<T> implements OnItemSelectedListener{

  protected ArrayAdapter<T> mSpinnerAdapter;
  protected CustomSpinner mSpinner;
  
  protected List mSpinnerDataList;
  
  protected int mLayoutID;

  
  /**
   * Constructor.
   * 
   * @param layoutID
   *            the layout of the fragment. Has to contain Spinner with id
   *            "spinner" and listview with id "listview".
   */
  public SpinnerDataFragment(int layoutID){
    mLayoutID = layoutID;
  }

  
  
  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View layout = inflater.inflate(mLayoutID, container, false);
  
    if(mSpinnerDataList == null)
      throw new AssertionError("Sub class of SpinnerDataFragment<T> did not set mObjectList.");
    
    ArrayAdapter<T> mSpinnerAdapter = new ArrayAdapter<T>(getActivity(), android.R.layout.simple_spinner_dropdown_item, android.R.id.text1, mSpinnerDataList);
  
    
    mSpinner = (CustomSpinner) layout.findViewById(R.id.spinner);
    mSpinner.setAdapter(mSpinnerAdapter);

    // if you dont post a runnable, the first item will be added to the mListAdapter on activity start
    mSpinner.post(new Runnable() {
      public void run() {
        mSpinner.setOnItemSelectedEvenIfUnchangedListener(SpinnerDataFragment.this);
      }
    });

    
    return layout;
  }

  @Override
  public void onItemSelected(AdapterView<?> arg0, View arg1, int position, long arg3) {
    addObject(position);
  }

  @Override
  public void onNothingSelected(AdapterView<?> arg0) {
  }

  @Override
  protected String checkObjectConstraints(int position) {
    Object selectedItem = mSpinner.getItemAtPosition(position);
    if(mObjectList.contains(selectedItem)){
      return getActivity().getString(R.string.object_already_in_list, selectedItem.toString());
    }
    return null;
  }

  @Override
  protected T buildObject(int position) {
    ((CreateExerciseActivity) getActivity()).swipeToDismissAdvise();
    return (T) mSpinner.getItemAtPosition(position);
  }

}

Java Source Code List

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