Android用PopupWindow实现新浪微博的分组信息

在上一篇文章(http://blog.csdn.net/jiahui524/article/details/7269738) 中我曾经用重写Dialog的方法来实现过对于分组信息的一些实现。后来在我的文章下面的评论中有人告诉我可以用PopupWindow来实现分组。并且 新浪微博用的就是这种方法。非常感谢网友songfantasy的提醒。于是乎,今天特再写上一篇文章的续集,希望能帮到大家一些。

废话不多说!看效果,继续我的风格,先上图,再上代码,最终上源代码!

最终实现效果:

//img-my.csdn.net/uploads/201202/27/0_1330330409jKSZ.gif

实现思路:

在一个PopupWindow里放一个ListView,从而来达到分组信息的实现!

具体主要实现代码:

group_list.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_margin="0.0px"
    android:background="@drawable/group_bg"
    android:orientation="vertical"
    android:paddingLeft="0.0sp"
    android:paddingRight="0.0sp" >

    <TextView
        android:id="@+id/groupAll"
        style="@style/grouplist_item_textview"
        android:layout_width="fill_parent"
        android:layout_height="@dimen/group_item_height"
        android:background="@drawable/grouplist_fixed_item_bg"
        android:gravity="center"
        android:text="全部" />

    <ImageView
        android:id="@+id/iv_group_list_bg_divider"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="0.0px"
        android:background="@drawable/group_divider"
        android:padding="0.0px" />

    <ListView
        android:id="@+id/lvGroup"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="0.0"
        android:cacheColorHint="#00000000"
        android:divider="@drawable/group_divider"
        android:dividerHeight="2.0px"
        android:drawSelectorOnTop="true"
        android:fadingEdgeLength="0.0sp"
        android:listSelector="@drawable/grouplist_item_bg" />

</LinearLayout>

Activity中的代码:

package com.jiahui.popwindow;

import java.util.ArrayList;
import java.util.List;

import com.jiahui.adapter.GroupAdapter;

import android.app.Activity;
import android.content.Context;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.TextView;
import android.widget.Toast;

public class PoupWindowDemoActivity extends Activity {

    private PopupWindow popupWindow;

    private ListView lv_group;

    private View view;

    private View top_title;

    private TextView tvtitle;

    private List<String> groups;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        top_title = this.findViewById(R.id.top_title);

        tvtitle = (TextView) top_title.findViewById(R.id.tvtitle);

        tvtitle.setText("做一个低调的码农");

        tvtitle.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                showWindow(v);
            }
        });

    }

    /**
     * 显示
     * 
     * @param parent
     */
    private void showWindow(View parent) {

        if (popupWindow == null) {
            LayoutInflater layoutInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            view = layoutInflater.inflate(R.layout.group_list, null);

            lv_group = (ListView) view.findViewById(R.id.lvGroup);
            // 加载数据
            groups = new ArrayList<String>();
            groups.add("我的微博");
            groups.add("好友");
            groups.add("亲人");
            groups.add("陌生人");

            GroupAdapter groupAdapter = new GroupAdapter(this, groups);
            lv_group.setAdapter(groupAdapter);
            // 创建一个PopuWidow对象
            popupWindow = new PopupWindow(view, 200, 250);
        }

        // 使其聚集
        popupWindow.setFocusable(true);
        // 设置允许在外点击消失
        popupWindow.setOutsideTouchable(true);

        // 这个是为了点击“返回Back”也能使其消失,并且并不会影响你的背景
        popupWindow.setBackgroundDrawable(new BitmapDrawable());
        WindowManager windowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
        // 显示的位置为:屏幕的宽度的一半-PopupWindow的高度的一半
        int xPos = windowManager.getDefaultDisplay().getWidth() / 2
                - popupWindow.getWidth() / 2;

        Log.i("coder", "windowManager.getDefaultDisplay().getWidth()/2:"
                + windowManager.getDefaultDisplay().getWidth() / 2);
        //
        Log.i("coder", "popupWindow.getWidth()/2:" + popupWindow.getWidth() / 2);

        Log.i("coder", "xPos:" + xPos);

        popupWindow.showAsDropDown(parent, xPos, 0);

        lv_group.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> adapterView, View view,
                    int position, long id) {

                Toast.makeText(PoupWindowDemoActivity.this,
                        "groups.get(position)" + groups.get(position), 1000)
                        .show();

                if (popupWindow != null) {
                    popupWindow.dismiss();
                }
            }
        });
    }
}

如需转载引用请注明出处:http://blog.csdn.net/jiahui524

欢迎大家多多交流。分享为快乐之本!让我们菜鸟一起成长!

两次感谢网友songfantasy的提醒!

提供源代码下载 :http://download.csdn.net/detail/jiahui524/4094114

posted @ 2013-11-15 00:16  山顶的鱼  阅读(213)  评论(0编辑  收藏  举报