• PopupWindow


    示例demo

    main.xml布局代码:

    复制代码
     1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     2     android:layout_width="match_parent"
     3     android:layout_height="match_parent"
     4     android:orientation="vertical" >
     5 
     6     <Button
     7         android:layout_width="wrap_content"
     8         android:layout_height="wrap_content"
     9         android:onClick="show"
    10         android:text="显示" />
    11 
    12 </LinearLayout>
    复制代码

    gridview的布局代码

    复制代码
     1 <?xml version="1.0" encoding="utf-8"?>
     2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     3     android:layout_width="match_parent"
     4     android:layout_height="match_parent"
     5     android:orientation="vertical" 
     6     android:background="@drawable/bg">
     7 
     8     <GridView
     9         android:id="@+id/gv"
    10         android:layout_width="match_parent"
    11         android:layout_height="wrap_content"
    12         android:numColumns="4" 
    13         android:horizontalSpacing="2dip"
    14         android:verticalSpacing="2dip">
    15         
    16     </GridView>
    17 
    18 </LinearLayout>
    复制代码

    gridview渐变色背景

    复制代码
     1 <?xml version="1.0" encoding="utf-8"?>
     2 <shape xmlns:android="http://schemas.android.com/apk/res/android" 
     3     android:shape="rectangle">
     4     
     5     <gradient 
     6         android:startColor="#5FF2FA"
     7         android:endColor="#4BED23"
     8         />
     9     
    10 
    11 </shape>
    复制代码

    item布局

    复制代码
     1 <?xml version="1.0" encoding="utf-8"?>
     2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     3     android:layout_width="match_parent"
     4     android:layout_height="match_parent"
     5     android:orientation="vertical" >
     6 
     7     <ImageView
     8         android:id="@+id/iv"
     9         android:layout_width="wrap_content"
    10         android:layout_height="wrap_content"
    11         android:layout_gravity="center"
    12         android:src="@drawable/i1" />
    13 
    14     <TextView
    15         android:id="@+id/tv"
    16         android:layout_width="wrap_content"
    17         android:layout_height="wrap_content"
    18         android:layout_gravity="center"
    19         android:layout_marginTop="5dip"
    20         android:text="搜索"
    21         android:textColor="#f00" />
    22 
    23 </LinearLayout>
    复制代码

    Acitivity代码:

    复制代码
      1 package com.android.hzy.popupwindow;
      2 
      3 import android.app.Activity;
      4 import android.graphics.drawable.BitmapDrawable;
      5 import android.os.Bundle;
      6 import android.view.Gravity;
      7 import android.view.LayoutInflater;
      8 import android.view.View;
      9 import android.view.ViewGroup;
     10 import android.widget.AdapterView;
     11 import android.widget.AdapterView.OnItemClickListener;
     12 import android.widget.BaseAdapter;
     13 import android.widget.GridView;
     14 import android.widget.ImageView;
     15 import android.widget.PopupWindow;
     16 import android.widget.TextView;
     17 
     18 public class MainActivity extends Activity {
     19 
     20     private PopupWindow mPopupWindow;
     21     private LayoutInflater mInflater;
     22 
     23     @Override
     24     protected void onCreate(Bundle savedInstanceState) {
     25         super.onCreate(savedInstanceState);
     26         setContentView(R.layout.activity_main);
     27 
     28         mInflater = LayoutInflater.from(getApplicationContext());
     29     }
     30 
     31     public void show(View v) {
     32         View contentView = mInflater.inflate(R.layout.popupwindow, null);
     33         GridView gv = (GridView) contentView.findViewById(R.id.gv);
     34         gv.setAdapter(new MyAdapter());
     35         gv.setOnItemClickListener(new MyOnItemClickListener());
     36         
     37         mPopupWindow = new PopupWindow(contentView,
     38                 ViewGroup.LayoutParams.MATCH_PARENT,
     39                 ViewGroup.LayoutParams.WRAP_CONTENT);
     40         
     41         // 如果需要点击其他的地方 popupwindow自动消失:1.popupwindow必须指定背景   2.popupwindow必须获取焦点
     42         mPopupWindow.setBackgroundDrawable(new BitmapDrawable());
     43         mPopupWindow.setFocusable(true);
     44         
     45         // 显示popupwindow窗口
     46 //        mPopupWindow.showAsDropDown(v); // 显示在按钮下方
     47         mPopupWindow.showAtLocation((View)v.getParent(), Gravity.BOTTOM, 0, 0);// 显示在屏幕下方 
     48     }
     49     
     50     private final class MyOnItemClickListener implements OnItemClickListener{
     51 
     52         @Override
     53         public void onItemClick(AdapterView<?> parent, View view, int position,
     54                 long id) {
     55             // TODO Auto-generated method stub
     56             mPopupWindow.dismiss();
     57         }
     58         
     59     }
     60 
     61     public final class MyAdapter extends BaseAdapter {
     62 
     63         private int[] images = new int[] { R.drawable.i1, R.drawable.i2,
     64                 R.drawable.i3, R.drawable.i4, R.drawable.i5, R.drawable.i6,
     65                 R.drawable.i7, R.drawable.i8 };
     66         
     67         private String[] names = new String[] { "搜索", "文件管理", "下载管理", "全屏",
     68                 "网址", "书签", "加入书签", "页面分享" };
     69 
     70         @Override
     71         public int getCount() {
     72             // TODO Auto-generated method stub
     73             return images.length;
     74         }
     75 
     76         @Override
     77         public Object getItem(int position) {
     78             // TODO Auto-generated method stub
     79             return names[position];
     80         }
     81 
     82         @Override
     83         public long getItemId(int position) {
     84             // TODO Auto-generated method stub
     85             return position;
     86         }
     87 
     88         @Override
     89         public View getView(int position, View convertView, ViewGroup parent) {
     90             // TODO Auto-generated method stub
     91             View view = mInflater.inflate(R.layout.item, null);
     92             
     93             ImageView iv = (ImageView) view.findViewById(R.id.iv);
     94             TextView tv = (TextView) view.findViewById(R.id.tv);
     95             
     96             iv.setImageResource(images[position]);
     97             tv.setText(names[position]);
     98             return view;
     99         }
    100 
    101     }
    102 }
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  • 原文地址:https://www.cnblogs.com/Free-Thinker/p/3397474.html
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