个人简历工作地点的选择（Android开源项目）

当我们在找工作时，肯定要注册简历。简历在创建的时候会有工作地点的选择，如下图：

当往上拉时，”热门城市”会取代”当前城市”并且不消失。当点击”上海”时，还有更精确地地点可以选择

我在github上找到了相关的demo（https://github.com/beworker/pinned-section-listview），并且对其进行了实现。

首先定义一个实体类

/** * Listview对应的每个条目 */public class Item {    public final static int ITEM = 0;    public static final int SECTION = 1;    /** listitem类型。SECTION大标题，ITEM小标题 */    public final int type;    /** listitem文本内容 */    public final String text;    /** listitem所在的SECTION */    public int sectionPosition;    /** listitem在整个Listview中的位置 */    public int listPosition;    /** 相对于某个section的位置 */    public int sectionlistPosition;    public Item(int type, String text) {        this.type = type;        this.text = text;    }    @Override    public String toString() {        return text;    }}

接下来是自定义的Listview

PinnedSectionListView.java
里面有英文注释，理解起来并不困难

然后是PinnedSectionListActivity，也是重点
首先定义了一个适配器

/**     * 适配器     */    class SimpleAdapter extends ArrayAdapter<Item> implements            PinnedSectionListAdapter {        private final int[] COLORS = new int[] { R.color.green_light,                R.color.orange_light, R.color.blue_light, R.color.red_light };        public SimpleAdapter(Context context, int resource,                int textViewResourceId) {            super(context, resource, textViewResourceId);            generateDataset();        }        /**         * 生成数据集         */        public void generateDataset() {            SQLiteDatabase db1 = SQLiteDatabase.openOrCreateDatabase(dst, null);            Cursor cursor = db1.query("provinces", null, null, null, null,                    null, null);            while (cursor.moveToNext()) {                String pro = cursor.getString(cursor.getColumnIndex("name"));                proset.add(pro);                int ID = cursor.getInt(cursor.getColumnIndex("_id")) - 1;                // -1是因为db文件里面数据的原因                proIDset.add(ID);            }            cursor.close();            db1.close();            int sectionPosition = 0, listPosition = 0;            // 省份 sectionPosition = 0            Item section = new Item(Item.SECTION, "省份");            section.sectionPosition = sectionPosition;            section.listPosition = listPosition++;            add(section);            final int itemsNumber = proset.size();            for (int j = 0; j < itemsNumber; j++) {                Item item = new Item(Item.ITEM, proset.get(j));                item.sectionPosition = sectionPosition;                item.listPosition = listPosition++;                item.sectionlistPosition = j;                add(item);            }            sectionPosition++;        }        @Override        public View getView(int position, View convertView, ViewGroup parent) {            TextView view = (TextView) super.getView(position, convertView,                    parent);            view.setTextColor(Color.DKGRAY);            view.setTag("" + position);            Item item = getItem(position);            if (item.type == Item.SECTION) {                view.setBackgroundColor(parent.getResources().getColor(                        COLORS[item.sectionPosition % COLORS.length]));            }            return view;        }        @Override        public int getViewTypeCount() {            return 2;        }        @Override        public int getItemViewType(int position) {            return getItem(position).type;        }        @Override        public boolean isItemViewTypePinned(int viewType) {            return viewType == Item.SECTION;        }    }

这个适配器的功能就是从db中加载数据（generateDataset），并且通过getView显示出来。
然后是响应的onListItemClick
当点击的item属于省份，下面还有城市的话（例如江苏省），那么就加载一个listview显示城市。通过设置setVisibility来隐藏和显示

    @Override    protected void onListItemClick(ListView l, View v, int position, long id) {        Item item = (Item) getListView().getAdapter().getItem(position);        if (item.type == Item.ITEM) {            Toast.makeText(this, "Item " + position + ": " + item.text,                    Toast.LENGTH_SHORT).show();            if (item.sectionPosition == 0) {// 属于"省份"的ITEM                cityset.clear();                SQLiteDatabase db1 = SQLiteDatabase.openOrCreateDatabase(dst,                        null);                // 注意这个province_id究竟应该等于哪个值                Cursor cursor = db1.query("citys", null, "province_id="                        + item.sectionlistPosition, null, null, null, null);                while (cursor.moveToNext()) {                    String city = cursor.getString(cursor                            .getColumnIndex("name"));                    if (!city.contains(".")) {                        cityset.add(city);                    }                }                cursor.close();                db1.close();                if (cityset.size() == 1) {// 直辖市                    return;                }                // 非直辖市再加载一个listview显示                getListView().setVisibility(View.GONE);                adapter = new ArrayAdapter<String>(                        PinnedSectionListActivity.this,                        android.R.layout.simple_list_item_1, cityset);                listView.setAdapter(adapter);                listView.setVisibility(View.VISIBLE);                listView.setOnItemClickListener(new OnItemClickListener() {                    @Override                    public void onItemClick(AdapterView<?> parent, View view,                            int position, long id) {                        Toast.makeText(                                PinnedSectionListActivity.this,                                "Item " + position + ": "                                        + adapter.getItem(position),                                Toast.LENGTH_SHORT).show();                    }                });                Log.i("cityset", cityset.toString());            }        } else {            Toast.makeText(this, "Item " + position, Toast.LENGTH_SHORT).show();        }    }

最后通过重写onBackPressed来进行两个listview的切换

    @Override    public void onBackPressed() {        if (listView.getVisibility() == View.VISIBLE                && getListView().getVisibility() == View.GONE) {            listView.setVisibility(View.GONE);            getListView().setVisibility(View.VISIBLE);        } else if (listView.getVisibility() == View.GONE                && getListView().getVisibility() == View.VISIBLE) {            finish();        }    }

我的代码地址：http://download.csdn.net/detail/lxj1137800599/9558528