[Pin to top] popupwindow of common android UI controls

Today we will learn how to implement the popupwindow bubble window. The effect is similar to that of the pop-up menu, but the implementation method is completely different. The following is a case of this scenario:

I. Case code

1. androidmanifest. xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.android.popupwindow"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="8"        android:targetSdkVersion="15" />    <application        android:icon="@drawable/ic_launcher"        android:label="@string/app_name" >        <activity            android:name=".PopupWindowActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>

2. String. xml

<Resources> <string name = "app_name"> bubble window </string> <string name = "button"> open popupwindow </string> </resources>

3. Main Interface layout file: Main. 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"    android:orientation="vertical"    android:id="@+id/main" >    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:onClick="openPopupWindow"        android:text="@string/button" /></LinearLayout>

4. popupwindow layout file: popupwindow. 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" Android: Orientation = "vertical" Android: background = "@ drawable/background"> <! -- <Textview Android: layout_width = "match_parent" Android: layout_height = "match_parent" Android: text = "I am popupwindow"/> --> <gridview Android: id = "@ + ID/gridview" Android: layout_width = "match_parent" Android: layout_height = "match_parent" Android: numcolumns = "4" Android: verticalspacing = "10dp" Android: horizontalspacing = "10dp"/> </linearlayout>

5. gridviewitem layout file: grid_item.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"    android:orientation="vertical"    android:gravity="center" >    <ImageView         android:id="@+id/imageView"        android:layout_width="wrap_content"        android:layout_height="wrap_content"/>    <TextView         android:id="@+id/textView"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:gravity="center"        android:textSize="16sp"        android:textColor="#000099"/></LinearLayout>

6. popupwindow: Enter. xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"    android:shareInterpolator="false" >    <translate         android:fromYDelta="100%p"        android:toYDelta="0"        android:duration="500" />        <alpha        android:fromAlpha="0.5"         android:toAlpha="1.0"        android:duration="300" /></set>

7. popupwindow: exit. xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"    android:shareInterpolator="false" >    <translate         android:fromYDelta="0"        android:toYDelta="100%p"        android:duration="500" />        <alpha        android:fromAlpha="1.0"         android:toAlpha="0.5"        android:duration="300" /></set>

8. popupwindowactivity. Java

Package COM. android. popupwindow; import Java. util. arraylist; import Java. util. hashmap; import Java. util. list; import android. app. activity; import android. graphics. drawable. bitmapdrawable; import android. OS. bundle; import android. view. gravity; import android. view. view; import android. view. viewgroup; import android. widget. adapterview; import android. widget. adapterview. onitemclicklistener; import android. widget. g Ridview; import android. widget. listadapter; import android. widget. popupwindow; import android. widget. simpleadapter; public class popupwindowactivity extends activity {private popupwindow; private view parent; // sets the private int [] images = {R. drawable. i1, R. drawable. i2, R. drawable. i3, R. drawable. i4, R. drawable. i5, R. drawable. i6, R. drawable. i7, R. drawable. i8}; // set the gridview Item Name resource private string [] names = {"Search", "file", "Download", "full screen", "url", "bookmarks", "add ", "share"}; @ override public void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. main); // construct the popupwindow content view contentview = getlayoutinflater (). inflate (R. layout. popupwindow, null); gridview = (gridview) contentview. findviewbyid (R. id. gridview); gridview. setadapt Er (getadapter (); gridview. setonitemclicklistener (New onitemclicklistener () {@ override public void onitemclick (adapterview <?> Parent, view, int position, long ID) {If (popupwindow. isshowing () {popupwindow. dismiss () ;}}); // initialize popupwindow control popupwindow = new popupwindow (contentview, viewgroup. layoutparams. match_parent, viewgroup. layoutparams. wrap_content); // allows popupwindow to obtain the focus popupwindow. setfocusable (true); // set the popupwindow background image popupwindow. setbackgrounddrawable (New bitmapdrawable (); // set popupwindow to pop up the animation effect popupwindow. setanimationstyle (R. style. animation); // find the layout file parent = findviewbyid (R. id. main);}/*** construct the adapter used to fill the gridview data entry * @ return listadapter */private listadapter getadapter () {list 
 
Note: store, and in the drawable-hdpi folder.
Ii. Case results

Iii. Code download:Http://download.csdn.net/detail/leverage_1229/5470815