Android Open Source - MultiWork Slide Expandable List View

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License

The source code is released under:

Copyright (c) 2013, Torti Andr?s Fernando All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions a...

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Java Source Code

package com.tjerkw.slideexpandable.library;
//from   w ww .  j  a v  a2s.  co  m
import android.os.Parcelable;
import android.util.AttributeSet;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.content.Context;

/**
 * Simple subclass of listview which does nothing more than wrap
 * any ListAdapter in a SlideExpandalbeListAdapter
 */
class SlideExpandableListView extends ListView {
  private SlideExpandableListAdapter adapter;

  public SlideExpandableListView(Context context) {
    super(context);
  }

  public SlideExpandableListView(Context context, AttributeSet attrs) {
    super(context, attrs);
  }

  public SlideExpandableListView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
  }

  /**
   * Collapses the currently open view.
   *
   * @return true if a view was collapsed, false if there was no open view.
   */
  public boolean collapse() {
    if(adapter!=null) {
      return adapter.collapseLastOpen();
    }
    return false;
  }

  public void setAdapter(ListAdapter adapter) {
    this.adapter = new SlideExpandableListAdapter(adapter);
    super.setAdapter(this.adapter);
  }

  /**
   * Registers a OnItemClickListener for this listview which will
   * expand the item by default. Any other OnItemClickListener will be overriden.
   *
   * To undo call setOnItemClickListener(null)
   *
   * Important: This method call setOnItemClickListener, so the value will be reset
   */
  public void enableExpandOnItemClick() {
    this.setOnItemClickListener(new OnItemClickListener() {
      @Override
      public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
        SlideExpandableListAdapter adapter = (SlideExpandableListAdapter)getAdapter();
        adapter.getExpandToggleButton(view).performClick();
      }
    });
  }

  @Override
  public Parcelable onSaveInstanceState() {
    return adapter.onSaveInstanceState(super.onSaveInstanceState());
  }

  @Override
  public void onRestoreInstanceState(Parcelable state) {
    if(!(state instanceof AbstractSlideExpandableListAdapter.SavedState)) {
      super.onRestoreInstanceState(state);
      return;
    }

    AbstractSlideExpandableListAdapter.SavedState ss = (AbstractSlideExpandableListAdapter.SavedState)state;
    super.onRestoreInstanceState(ss.getSuperState());

    adapter.onRestoreInstanceState(ss);
  }
}

Java Source Code List