Android自定义PopupWindow简单小例子

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent">  <ListView    android:id="@+id/pop_path"    android:layout_width="match_parent"    android:layout_height="wrap_content">  </ListView></LinearLayout>

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent">  <TextView    android:id="@+id/item_content"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:textSize="18dp"/></LinearLayout>

public class PopAdapter extends BaseAdapter {  private List<String> list;  private Context context;  public PopAdapter(List<String> list, Context context) {    this.list = list;    this.context = context;  }  @Override  public int getCount() {    return list.size();  }  @Override  public Object getItem(int position) {    return position;  }  @Override  public long getItemId(int position) {    return position;  }  @Override  public View getView(int position, View convertView, ViewGroup parent) {    ViewHolder viewHolder;    if (convertView == null) {      viewHolder = new ViewHolder();      convertView = LayoutInflater.from(context).inflate(R.layout.pop_list_adapter, null);      viewHolder.item_content = (TextView) convertView.findViewById(R.id.item_content);      convertView.setTag(viewHolder);    } else {      viewHolder = (ViewHolder) convertView.getTag();    }    viewHolder.item_content.setText(list.get(position));    return convertView;  }  private class ViewHolder {    private TextView item_content;  }}

public class MyPopuWindow extends PopupWindow {  private View contentView;  private ListView lv_pop;  private List<String> paths;  private Context context;  public MyPopuWindow(final Activity context) {    this.context = context;    //获得 LayoutInflater 的实例    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);    contentView = inflater.inflate(R.layout.fragment_popup, null);    //获取屏幕的宽高    int h = context.getWindowManager().getDefaultDisplay().getHeight();    int w = context.getWindowManager().getDefaultDisplay().getWidth();    this.setContentView(contentView);    // 设置SelectPicPopupWindow弹出窗体的宽    this.setWidth(LayoutParams.MATCH_PARENT);    // 设置SelectPicPopupWindow弹出窗体的高    this.setHeight(LayoutParams.WRAP_CONTENT);    // 设置SelectPicPopupWindow弹出窗体可点击    this.setFocusable(true);    this.setOutsideTouchable(true);    // 刷新状态    this.update();    // 实例化一个ColorDrawable颜色为半透明    ColorDrawable dw = new ColorDrawable(0000000000);    // 点back键和其他地方使其消失,设置了这个才能触发OnDismisslistener ，设置其他控件变化等操作    this.setBackgroundDrawable(dw);    // 设置SelectPicPopupWindow弹出窗体动画效果    this.setAnimationStyle(R.style.AnimationPreview);    initData();  }  private void initData() {    paths = new ArrayList<>();    paths.add("北京");    paths.add("上海");    paths.add("广州");    paths.add("天津");    paths.add("大连");    paths.add("长春");    paths.add("济南");    paths.add("青岛");    paths.add("无锡");    paths.add("郑州");    paths.add("宁波");    paths.add("厦门");    lv_pop = (ListView) contentView.findViewById(R.id.pop_path);    lv_pop.setAdapter(new PopAdapter(paths, context));    lv_pop.setOnItemClickListener(new AdapterView.OnItemClickListener() {      @Override      public void onItemClick(AdapterView<?> parent, View view, int position, long id) {        Toast.makeText(context, paths.get(position), Toast.LENGTH_SHORT).show();        showPopupWindow(view);      }    });  }  /**   * 显示popupWindow   *   * @param parent   */  public void showPopupWindow(View parent) {    if (!this.isShowing()) {      // 以下拉方式显示popupwindow      this.showAsDropDown(parent, parent.getLayoutParams().width / 2, 18);    } else {      this.dismiss();    }  }}

myPopuWindow= new MyPopuWindow(getActivity());myPopuWindow.showPopupWindow(actionPath);