popWindowdemo

xml文件
1.main.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:background="@android:color/white"    android:orientation="horizontal"    >    <LinearLayout        android:id="@+id/title_layout"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_centerVertical="true"        android:background="@drawable/bg"         android:gravity="center">        <TextView            android:id="@+id/title"            android:text="@string/str_title"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:singleLine="true"            android:textSize="@dimen/size_title"             android:textColor="@android:color/white"/>        <ImageView            android:id="@+id/arrow"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_gravity="center"            android:layout_marginLeft="5dip"            android:background="@drawable/icon_arrow_down"       />    </LinearLayout></LinearLayout>

2.pop.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:gravity="center"    android:layout_width="fill_parent"    android:layout_height="fill_parent"><!--   <ListViewandroid:id="@+id/pop_list"    android:layout_width="fill_parent"     android:layout_height="wrap_content"android:dividerHeight="2dip" android:cacheColorHint="#00000000"    ></ListView>  -->   <TextView       android:layout_width="fill_parent"     android:layout_height="wrap_content"    android:textColor="#000000"    android:text="城市："      />  <EditText       android:layout_width="fill_parent"     android:layout_height="wrap_content"    android:lines="1"      />   <TextView       android:layout_width="fill_parent"     android:layout_height="wrap_content"    android:textColor="#000000"    android:text="地点:"      />  <EditText       android:layout_width="fill_parent"     android:layout_height="wrap_content"    android:lines="1"      />  <Button       android:layout_width="wrap_content"     android:layout_height="wrap_content"    android:text=" 确 定 "      />  </LinearLayout>

3.(activity)PopwindowActivity.java

import java.util.ArrayList;import java.util.HashMap;import java.util.Map;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.view.Gravity;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.ListView;import android.widget.PopupWindow;import android.widget.PopupWindow.OnDismissListener;import android.widget.SimpleAdapter;import android.widget.Toast;public class PopwindowActivity extends Activity{private ImageView arrow;private boolean isOpenPop = false;private PopupWindow window;private ListView list;private LinearLayout title_layout;public static final String KEY = "key";ArrayList<Map<String, Object>> items = new ArrayList<Map<String, Object>>();Context mContext;@Overrideprotected void onCreate(Bundle savedInstanceState){// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.main);mContext = this;arrow = (ImageView) findViewById(R.id.arrow);title_layout = (LinearLayout) findViewById(R.id.title_layout);title_layout.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v){// TODO Auto-generated method stubchangPopState(v);}});}/** * 更改Pop状态 * */public void changPopState(View v){isOpenPop = !isOpenPop;if (isOpenPop){arrow.setBackgroundResource(R.drawable.icon_arrow_up);popAwindow(v);} else{arrow.setBackgroundResource(R.drawable.icon_arrow_down);if (window != null){window.dismiss();}}}private void popAwindow(View parent){if (window == null){LayoutInflater lay = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);View v = lay.inflate(R.layout.pop, null);window = new PopupWindow(v, 260, 300);int x = (int) getResources().getDimension(R.dimen.pop_x);int y = (int) getResources().getDimension(R.dimen.pop_y);window = new PopupWindow(v, x, y);}window.setBackgroundDrawable(getResources().getDrawable(R.drawable.pop_bg));window.setFocusable(true);window.setOutsideTouchable(false);window.setOnDismissListener(new OnDismissListener(){@Overridepublic void onDismiss(){// TODO Auto-generated method stubisOpenPop = false;arrow.setBackgroundResource(R.drawable.icon_arrow_down);}});window.update();window.showAtLocation(parent, Gravity.CENTER_HORIZONTAL | Gravity.TOP,0, (int) getResources().getDimension(R.dimen.pop_layout_y));}}

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