Display and close of the Popupwindow of the Android Master Road

The effect of Popwindow is similar to a fixed small window. Just look at the effect.

Effect:

Main code:

Package Com.example.popupwindowdemo;import Android.os.bundle;import Android.app.activity;import Android.app.actionbar.layoutparams;import Android.util.log;import Android.view.gravity;import Android.view.layoutinflater;import Android.view.menu;import Android.view.view;import Android.view.view.onclicklistener;import Android.widget.button;import Android.widget.popupwindow;public Class Mainactivity extends Activity implements Onclicklistener{private Button btn_show,btn_close;private Popupwindow Mpopupwindow; @Overrideprotected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (r.layout.activity_main); btn_show = (Button) Findviewbyid (r.id.btn_show); btn_ Show.setonclicklistener (this), Btn_close = (Button) Findviewbyid (r.id.btn_close); Btn_close.setonclicklistener (this );} @Overridepublic boolean Oncreateoptionsmenu (Menu menu) {//Inflate the menu; This adds items to the action bar if it is PR Esent.getmenuinflater (). Inflate (R.menu.main, menu); return true;} @Overridepublic void OnClick (View v) {switch (V.getid ()) {case R.id.btn_show:if (null = = Mpopupwindow | |!mpopupwindow.isshowi Ng ()) {Layoutinflater Mlayoutinflater = (layoutinflater) this. Getsystemservice (Layout_inflater_service);  View music_popunwindwow = mlayoutinflater.inflate (R.layout.music_popwindow, NULL); Mpopupwindow = new Popupwindow (music_popunwindwow,layoutparams.match_parent,layoutparams.wrap_content); Mpopupwindow.showatlocation (Findviewbyid (r.id.main), gravity.right| Gravity.bottom, 0, 0);} Break;case r.id.btn_close:if (null! = Mpopupwindow && mpopupwindow.isshowing ()) {Mpopupwindow.dismiss (); if ( NULL = = Mpopupwindow) {log.e ("mainactivity", "null = = Mpopupwindow");}} Break;default:break;}}}

Activity_main.xml:

<linearlayout xmlns:android= "http://schemas.android.com/apk/res/android"    xmlns:tools= "http// Schemas.android.com/tools "    android:layout_width=" match_parent "    android:layout_height=" Match_parent "    android:id= "@+id/main"    android:orientation= "horizontal"    >    <button        android:layout_ Width= "Wrap_content"        android:layout_height= "wrap_content"        android:id= "@+id/btn_show"        android:text = "Show"/>    <button         android:layout_width= "wrap_content"        android:layout_height= "wrap_content "        android:id=" @+id/btn_close "        android:text=" Close "/></linearlayout>

Music_popwindow.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= "Wrap_content"
Android:background= "#77777777"
android:orientation= "Vertical" >
<button android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
Android:layout_gravity= "Right"
android:text= "Like"/>


</LinearLayout>

<?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=" Wrap_content "    android: Background= "#77777777"    android:orientation= "vertical" >    <button android:layout_width= "wrap_content "        android:layout_height=" wrap_content "        android:layout_gravity=" right "        android:text=" like "/>< /linearlayout>

Display and close of the Popupwindow of the Android Master Road