Experiment 6 play audio and video in the app

Lab Report

Course Name		Mobile Internet development based on Android platform		Date of experiment	April 15
Name of the experimental project		Play audio and video in the app		Location of the experiment	S3002
Type of experiment		-Verification Type √ design type-comprehensive type		Hours
The purpose and requirements of the experiment (the knowledge points which are involved in this experiment and are required to be mastered)
Enables processing of audio and video in an application. Requirements 1) Realize playback audio, audio playback control; 2) realize playback video, video playback control; 3) 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 /*** * This class is mainly used to test the function of calling the functions of the Andriod.media.MediaPlayer package to implement music playback. * The music files in the resource files in the project, the files in the local file system, and the music on the network are played separately; * video playback function, using the videoview control; * The code specifies the path of the audio and video files in the local file system, before testing the program, please follow the path in the code and the name of the audio and video files to add files to the phone; (4) Create a new service class that uses service services to play the music in the project source file, enabling the background to continue to play audio.
Four, the experimental results (the experimental source program list and operating results or experimental conclusions, experimental design drawings)
Code: 1.MainActivity Package com.example.mediapiayer; Import Java.io.File; Import java.io.IOException; Import Android.media.MediaPlayer; Import Android.media.MediaPlayer.OnCompletionListener; Import Android.net.Uri; Import Android.os.Bundle; Import android.os.Environment; Import android.app.Activity; Import android.content.Intent; Import Android.view.Menu; Import Android.view.View; Import Android.view.View.OnClickListener; Import Android.widget.Button; Import Android.widget.TextView; public class Mainactivity extends Activity { Public MediaPlayer myPlayer1 = new MediaPlayer (); Private Button bt1, BT2, BT3, Bt4, Bt5, BT6; Private TextView MTextView1; Private String uri = "http://bd.kuwo.cn/yinyue/2324240"; @Override protected void OnCreate (Bundle savedinstancestate) { Super.oncreate (savedinstancestate); Setcontentview (R.layout.activity_main); MTextView1 = (TextView) Findviewbyid (R.ID.TEXTVIEW1); BT1 = (Button) Findviewbyid (R.id.button1); BT2 = (Button) Findviewbyid (R.id.button2); BT3 = (Button) Findviewbyid (R.id.button3); BT4 = (Button) Findviewbyid (R.ID.BUTTON4); BT5 = (Button) Findviewbyid (R.ID.BUTTON5); BT6 = (Button) Findviewbyid (R.ID.BUTTON6); Bt1.setonclicklistener (New Onclicklistener () { @Override public void OnClick (View arg0) { TODO auto-generated Method Stub try { if (myplayer1.isplaying () = = True) { Myplayer1.reset (); } MyPlayer1 = Mediaplayer.create (Mainactivity.this, R.raw.song); Myplayer1.start (); Mtextview1.settext (R.string.str_start); } catch (IllegalStateException e) { Mtextview1.settext (R.string.str_stop); E.printstacktrace (); } } }); Bt2.setonclicklistener (New Onclicklistener () { String sdcard = Environment.getexternalstoragedirectory (). GetPath (); @Override public void OnClick (View arg0) { TODO auto-generated Method Stub try { if (myplayer1.isplaying () = = True) { Myplayer1.reset (); } Myplayer1.setdatasource (SDcard + file.separator + "F.I.R.-Yueyawan.mp3"); Myplayer1.prepare (); Myplayer1.start (); Mtextview1.settext (R.string.str_tishi); } catch (IllegalStateException e) { Mtextview1.settext (R.string.str_stop); E.printstacktrace (); } catch (IllegalArgumentException e) { TODO auto-generated Catch block E.printstacktrace (); } catch (SecurityException e) { TODO auto-generated Catch block E.printstacktrace (); } catch (IOException e) { TODO auto-generated Catch block E.printstacktrace (); } } }); Bt3.setonclicklistener (New Onclicklistener () { @Override public void OnClick (View arg0) { TODO auto-generated Method Stub Myplayer1.reset (); try { Myplayer1.setdatasource (URI); } catch (IllegalArgumentException e) { TODO auto-generated Catch block E.printstacktrace (); } catch (SecurityException e) { TODO auto-generated Catch block E.printstacktrace (); } catch (IOException e) { TODO auto-generated Catch block E.printstacktrace (); } Intent Intent = new Intent (Intent.action_view, Uri.parse (Uri)); StartActivity (Intent); Mtextview1.settext (R.string.str_wangluo); } }); Bt4.setonclicklistener (New Onclicklistener () { @Override public void OnClick (View arg0) { TODO auto-generated Method Stub Myplayer1.stop (); Mtextview1.settext (r.string.str_finished); } }); Bt5.setonclicklistener (New Onclicklistener () { @Override public void OnClick (View arg0) { TODO auto-generated Method Stub } }); Bt6.setonclicklistener (New Onclicklistener () { @Override public void OnClick (View arg0) { TODO auto-generated Method Stub Myplayer1.stop (); Mtextview1.settext (R.string.str_jieshu); } }); } @Override public boolean Oncreateoptionsmenu (Menu menu) { Inflate the menu; This adds items to the action bar if it is present. Getmenuinflater (). Inflate (R.menu.main, menu); return true; } } 2.activity_main.xml <relativelayout 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:paddingbottom="@dimen/activity_vertical_margin" android:paddingleft="@dimen/activity_horizontal_margin" android:paddingright="@dimen/activity_horizontal_margin" android:paddingtop="@dimen/activity_vertical_margin" android:background="@drawable/u311593540665946679fm15gp0" Tools:context=". Mainactivity " > <textview android:id="@+id/textview1" Android:layout_width="Wrap_content" android:layout_height="Wrap_content" android:layout_alignparenttop="true" Android:layout_centerhorizontal="true" Android:text = "Test multimedia playback" /> <button android:id="@+id/button1" Android:layout_width="Wrap_content" android:layout_height="Wrap_content" android:layout_alignleft="@+id/button2" android:layout_alignright="@+id/button2" android:layout_below="@+id/textview1" android:layout_margintop="26DP" Android:text = "Play music from the source file" /> <button android:id="@+id/button3" Android:layout_width="Wrap_content" android:layout_height="Wrap_content" android:layout_alignleft="@+id/button2" android:layout_alignright="@+id/button2" android:layout_below="@+id/button2" Android:text = "Play Music on the network" /> <button android:id="@+id/button2" Android:layout_width="Wrap_content" android:layout_height="Wrap_content" android:layout_below="@+id/button1" Android:layout_centerhorizontal="true" Android:text = "Play music in the local file system" /> <button android:id="@+id/button4" Android:layout_width="Wrap_content" android:layout_height="Wrap_content" android:layout_alignbaseline="@+id/button5" android:layout_alignbottom="@+id/button5" android:layout_alignleft="@+id/button3" Android:text = "Stop playing" /> <button android:id="@+id/button5" Android:layout_width="Wrap_content" android:layout_height="Wrap_content" android:layout_below="@+id/button3" android:layout_torightof="@+id/button4" Android:text = "Play video" /> <button android:id="@+id/button6" Android:layout_width="Wrap_content" android:layout_height="Wrap_content" android:layout_below="@+id/button3" android:layout_torightof="@+id/button5" Android:text = "Exit" /> </RelativeLayout> Run Result: () 1. 2.
Five, Experimental summary (analysis of the results of the experiment, experience and improvement of experimental ideas)
Through experiments, Android learns to control the playback of media files by invoking functions inside the Andriod.media.MediaPlayer package, enabling audio playback on selected files, local SD cards, and the network. Deepen your understanding of Android development.
Experimental reviews
Experimental results			instructing teachers to sign: year -month Day

Experiment 6 play audio and video in an application