Experiment 6 play audio and video in the app

Lab Report

Course Name		Mobile Internet development based on Android platform		Date of experiment	2015.4.16
Name of the experimental project		Experiment 6 play audio and video in the app		Location of the experiment	S30010
Type of experiment		-Verification Type √ design type-comprehensive type		Hours	2
The purpose and requirements of the experiment (the knowledge points which are involved in this experiment and are required to be mastered)
1. Implement audio and video processing in the application. 2. Realize playback audio, audio playback control; 3. Realize playback video, video playback control; 4. Use service services to play music from the project source file.
second, the experimental environment (the hardware equipment and related software used in this experiment)
(1) PC Machine (2) Operating system: Windows XP (3) Software: Eclipse, jdk1.6,android Sdk,adt
Third, the contents and steps of the experiment
1) New Project 2) Modify the layout file Main.xml 3) Perfect Activity class
Four, the experimental results (the experimental source program list and operating results or experimental conclusions, experimental design drawings)
Code: Package Com.example.yemediapalyer;import Java.io.file;import android.media.mediaplayer;import Android.media.mediaplayer.oncompletionlistener;import Android.net.uri;import Android.os.Bundle;import Android.app.activity;import Android.view.view;import Android.view.view.onclicklistener;import Android.widget.button;import Android.widget.imagebutton;import Android.widget.mediacontroller;import Android.widget.textview;import Android.widget.toast;import Android.widget.VideoView; Public classMainactivity extends Activity {//private Videoview video= (videoview) Findviewbyid (r.id.videoview1); PrivateMediaPlayer player;//MediaPlayer Object PrivateFile file;//the audio file to play PrivateTextView hint;//a text box that declares a message that displays a hint PrivateMediaPlayer MediaPlayer =NewMediaPlayer ();//private MediaPlayer Player1 = Mediaplayer.create (This, Uri.parse ("Http://www.mingribook.com/soung/bg.mp3"));@Override Public voidonCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (R.layout.activity_main); Final Button button1= (Button) Findviewbyid (R.id.button2);//Get the play button in SDFinal Button pausebtn = (Button) Findviewbyid (R.ID.PAUSEBTN);//Get the play button in the project//final Button button4 = (Button) Findviewbyid (r.id.button4);//Get play Video//final Button Button3 = (Button) Findviewbyid (r.id.button3);//Get the play button on the networkFinal Button stopbtn = (Button) Findviewbyid (R.ID.STOPBTN);//Get the Stop buttonhint = (TextView) Findviewbyid (r.id.hint);//Gets the text box for the user to display the prompt informationFile =NewFile ("/sdcard/ding.wav");//get the text to play in SDPausebtn.setonclicklistener (NewOnclicklistener () {@Override Public voidOnClick (View arg0) {//TODO auto-generated Method StubMediaplayer=mediaplayer.create (mainactivity. This, R.raw.chimes); Mediaplayer.start (); Hint.settext ("playing music in engineering"); } }); if(File.exists ()) {MediaPlayer= Mediaplayer.create (mainactivity. This, Uri.parse (File.getabsolutepath ())); } Else{Hint.settext ("the file to be played does not exist! "); } if(File.exists ()) {//If the file existsPlayer =MediaPlayer. Create ( This, Uri.parse (File.getabsolutepath ()));//Create a MediaPlayer object}Else{Hint.settext ("The audio file you want to play does not exist! "); Button1.setenabled (false); return; } //to add a complete event listener for a MediaPlayer objectPlayer.setoncompletionlistener (NewOncompletionlistener () {@Override Public voidOncompletion (MediaPlayer MP) {Try{player.reset (); Player.setdatasource (File.getabsolutepath ()); //Reset the audio to playPlayer.prepare ();//Pre-load audioPlayer.start ();//Start PlaybackHint.settext ("playing audio in SD ..."); } Catch(Exception e) {e.printstacktrace ();//Output Exception Information}//Start playing music } }); Button1.setonclicklistener (NewOnclicklistener () {@Override Public voidOnClick (View v) {Try{player.reset (); Player.setdatasource (File.getabsolutepath ()); //Reset the audio to playPlayer.prepare ();//Pre-load audioPlayer.start ();//Start PlaybackHint.settext ("playing audio in SD ..."); } Catch(Exception e) {e.printstacktrace ();//Output Exception Information}//Start playing music } }); //Add a Click event listener for the play button//Button4.setonclicklistener (New Onclicklistener () {////@Override//Public void OnClick (View v) {//file File1=new file ("/sdcard/1.wmv"); //get the files to play on the SD card//mediacontroller mc=new Mediacontroller (mainactivity.this);//if (file1.exists ()) {//determine if the video file you want to play exists//Video.setvideopath (File1.getabsolutepath ()); //Specify the video to play//Video.setmediacontroller (MC); //setting Videoview associated with Mediacontroller//Video.requestfocus (); //let Videoview get the focus//try {//Video.start (); //start playing video//} catch (Exception e) {//E.printstacktrace (); //Output Exception Information// }// //Add complete event listener for Videoview//Video.setoncompletionlistener (New Oncompletionlistener () {// //@Override//Public void Oncompletion (MediaPlayer MP) {//Toast.maketext (mainactivity.this, "video playback is complete! ", Toast.length_short). Show (); //pop-up message box shows playback complete// }// });//}else{////Toast.maketext (This, "the video file to play does not exist", toast.length_short). Show (); Popup message prompt file does not exist// }}// });//Button3.setonclicklistener (New Onclicklistener () {////@Override//Public void OnClick (View v) {//try {//Player1.reset ();//Player1.setdatasource (File.getabsolutepath ());//Reset the audio to play//Player1.prepare ();//Pre-load audio//Player1.start ();//Start Playback//Hint.settext ("Playing audio in Network ...");//} catch (Exception e) {//e.printstacktrace ();//Output Exception Information// }//Start playing music//// }// }); //Add a Click event listener for the stop buttonStopbtn.setonclicklistener (NewOnclicklistener () {@Override Public voidOnClick (View v) {player.stop ();//stop playing;Mediaplayer.pause (); Hint.settext ("Stop playing audio ..."); } }); } @Overrideprotected voidOnDestroy () {if(Player.isplaying ()) {player.stop ();//stop playback of audio} player.release (); //Freeing ResourcesSuper.ondestroy (); }} Run:
Five, Experimental summary (analysis of the results of the experiment, experience and improvement of experimental ideas)
The experiment learned how to play video and music in the Android project, knowing that many of the animated animations can be displayed directly in the video.
Experimental reviews
Experimental results			Guide Teacher Signature: Date

Experiment 6 play audio and video in the app