27. Learn Android multimedia from scratch-use videoview to play videos

 

Videoview

Common Methods:

Method Name	Description
Public void setvideopath (string path)	Load the file in the path
Public void setvideouri (URI)	Load the video corresponding to the URI
Public void start ()	Start
Public void seekto (INT msec)	Positioning
Public void pause ()	Pause
Public void stop ()	Stop
Public void setmediacontroller (mediacontroller Controller)	Set mediacontroller object

 

About mediacontroller class

This category is also for Android. the widget package contains a mediaplayer multimedia playback component, which contains a component for "playback", "pause", "Fast forward", "Fast forward", and progress bar.

Constructor

Method Name	Description
Public mediacontroller (context, attributeset attrs)	Create a mediacontroller object through the context object and attributeset object
Public mediacontroller (context, Boolean usefastforward)	Use the context object and specify whether to allow the user to control the progress. That is, whether there are "Fast Forward" and "Fast Return" buttons. If it is set to false, the display will not be displayed (for example, film 1)
Public mediacontroller (context)	Use context to create a mediacontroller object

 

Common Methods

Method Name	Description
Public void hide ()	Set to hide mediacontroller
Public void show ()	Set to display mediacontroller
Public void show (INT timeout)	Set the display time of mediacontroller in milliseconds. If it is set to 0, it will not be hidden until the hide () method is called.
Public void setmediaplayer (mediacontroller. mediaplayercontrol player)	Set mediaplayer to bind it with the control to be bound. The parameter is a mediacontroller. the mediaplayercontrol static interface object (while videoview is mediacontroller. mediaplayercontrol: Sub-implementation class of the static interface, which enables us to better control the video playback progress)

 

 

Image 1

If you use the public mediacontroller (contextcontext, Boolean usefastforward) constructor to create a mediacontroller object and specify usefastforward = false, this effect is displayed.

Effect:The show and hide buttons are used to control the display and hiding of mediacontroller.

Encoding implementation:

Layout file code:

<?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:orientation="vertical" >    <VideoView        android:id="@+id/video"        android:layout_width="fill_parent"        android:layout_height="fill_parent" /></LinearLayout>

Activity Code:

Package COM. jiahui. videoview; import Java. io. file; import android. app. activity; import android. graphics. pixelformat; import android. OS. bundle; import android. view. view; import android. widget. button; import android. widget. mediacontroller; import android. widget. toast; import android. widget. videoview; public class videoviewdemoactivity extends activity {private videoview; private button btnhide, btnsho W; mediacontroller; Public void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); getwindow (). setformat (pixelformat. translucent); setcontentview (R. layout. main); videoview = (videoview) This. findviewbyid (R. id. video); btnshow = (button) This. findviewbyid (R. id. btnshow); btnhide = (button) This. findviewbyid (R. id. btnhide); // using this method to create mediacontroller will not display the "Fast Forward" and "Fast Return" Buttons/me Diacontroller = new mediacontroller (this, false); mediacontroller = new mediacontroller (this); file videofile = new file ("/mnt/sdcard/movie.3gp "); // first determine whether the object exists if (videofile. exists () {system. out. println ("file exists"); videoview. setvideopath (videofile. getabsolutepath (); system. out. println (videofile. getabsolutepath (); // sets videview and mediacontroller to associate videoview. setmediacontroller (mediacontroller); // sets mediaco Ntroller and videview establish association mediacontroller. setmediaplayer (videoview); // obtain the videoview focus. requestfocus (); // start to play videoview. start ();} else {toast. maketext (this, "the file does not exist", toast. length_long ). show ();} btnshow. setonclicklistener (new view. onclicklistener () {@ overridepublic void onclick (view v) {If (mediacontroller! = NULL) {// If 0 is used, it will be displayed until hide () mediacontroller is called. show (0) ;}}); btnhide. setonclicklistener (new view. onclicklistener () {@ overridepublic void onclick (view v) {If (mediacontroller! = NULL) {mediacontroller. Hide ();}}});}}

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