Android自定义PopupWindow简单小例子

最近没事做就写了一下popupwindow，希望对有些人有点帮助。

照常先看一下完成后的结果（界面比较难看就不要吐槽了）

点击地理位置然后弹出的popupwindow，数据我写死了但是可以根据你们的需求自己改，或者通过网络获取数据。我是通过listview进行展示的你们也可以改成表格布局，具体的实现代码如下：

popupwindow的弹出框的整体布局（listview）fragment_popup：

<?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>

listview要加载的item:pop_list_adapter.xml

<?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>

listview的适配器：popadapter

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;
  }
}

写一个mypopupwindow类继承popupwindow：

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();
    }
  }

}

接下来就是调用popupwindow显示了。actionpath：是你的组件也就是我的地理位置

mypopuwindow= new mypopuwindow(getactivity());
mypopuwindow.showpopupwindow(actionpath);

好了大概的一个代码就是这样了希望对你们有用。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。