Android uses service to play music instance code

Use of the Android service:

We can create an Android program that creates an activity in the SRC directory, a service class that inherits from the services class, and creates a raw folder in the Resource folder res directory to store audio files, such as putting Music.mp3 music files in the directory. The main interface of the program is as follows:

XML layout

The code is as follows

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<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android" android:orientation= "Vertical" Android:layout_width= "Fill_parent" android:layout_height= "Fill_parent" > <textview Android:layout_width= "Fill_parent" android:layout_height= "Wrap_content" Android:text= "Welcome to Andy ' s blog!" Android:textsize= "16sp"/> <textview Android:layout_width= "Fill_parent" android:layout_height= "Wrap_content" android:text= "Music playback service"/> <button Android:id= "@+id/startmusic" Android:layout_width= "Wrap_content" android:layout_height= "Wrap_content" android:text= "Open music playback service"/> <button Android:id= "@+id/stopmusic" Android:layout_width= "Wrap_content" android:layout_height= "Wrap_content" android:text= "Stop music playback service"/> <button Android:id= "@+id/bindmusic" Android:layout_width= "Wrap_content" android:layout_height= "Wrap_content" Android:text= "Bind music playback service"/> <button Android:id= "@+id/unbindmusic" Android:layout_width= "Wrap_content" android:layout_height= "Wrap_content" android:text= "Unbind--Bind music playback service"/> </LinearLayout>

Java code

The code is as follows

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Musicservice.java Package com.zeph.android.service; Import Android.app.Service; Import android.content.Intent; Import Android.media.MediaPlayer; Import Android.os.IBinder; public class Musicservice extends Service { Private MediaPlayer Mmediaplayer; @Override Public IBinder Onbind (Intent arg0) { return null; } @Override public void OnCreate () { Super.oncreate (); Mmediaplayer = Mediaplayer.create (this, R.RAW.MUSIC01); } @Override public void OnDestroy () { Super.ondestroy (); Mmediaplayer.stop (); Mmediaplayer.release (); }   @Override  public void OnStart (Intent Intent, int startid) {   super.onstart (Intent, Startid);   int operate = Intent.getintextra ("Operate", 3);   switch (operate) {   case 0:    if (!mmediaplayer.isplaying ()) {     mmediaplayer.start ();    }    break;   case 1:    if (mmediaplayer.isplaying ()) {      Mmediaplayer.pause ();    }    break;   case 2:    if (mmediaplayer.isplaying ()) {      Mmediaplayer.stop ();     mmediaplayer = Mediaplayer.create (this, R.RAW.MUSIC01);    }    break;   default:    break     } Servicetestactivity.java Package com.zeph.android.service; Import android.app.Activity; Import android.content.Intent; Import Android.os.Bundle; Import Android.view.View; Import Android.view.View.OnClickListener; Import Android.widget.Button; public class Servicetestactivity extends activity { Private Button PlayButton; Private Button Pausebutton; Private Button Stopbutton; Private Button StopService; @Override public void OnCreate (Bundle savedinstancestate) { Super.oncreate (savedinstancestate); Setcontentview (R.layout.main); PlayButton = (Button) Findviewbyid (R.id.playbutton); Pausebutton = (Button) Findviewbyid (R.id.pausebutton); Stopbutton = (Button) Findviewbyid (R.id.stopbutton); StopService = (Button) Findviewbyid (R.id.stopservice); Playbutton.setonclicklistener (New Buttononclicklistener ()); Pausebutton.setonclicklistener (New Buttononclicklistener ()); Stopbutton.setonclicklistener (New Buttononclicklistener ()); Stopservice.setonclicklistener (New Buttononclicklistener ()); } public class Buttononclicklistener implements Onclicklistener { @Override public void OnClick (view view) { Intent Intent = new Intent (); Intent.setclass (Getapplicationcontext (), musicservice.class); if (view = = PlayButton) { Intent.putextra ("operate", 0); StartService (Intent); else if (view = = Pausebutton) { Intent.putextra ("Operate", 1); StartService (Intent); else if (view = = Stopbutton) { Intent.putextra ("Operate", 2); StartService (Intent); else if (view = = StopService) { StopService (Intent); } } } }

The service also needs to be registered with Androidmanifest.xml:

The code is as follows

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<?xml version= "1.0" encoding= "Utf-8"?> <manifest xmlns:android= "Http://schemas.android.com/apk/res/android" Package= "Com.pocketdigi.service" Android:versioncode= "1" Android:versionname= "1.0" > <application android:icon= "@drawable/icon" android:label= "@string/app_name" > <activity android:name= ". Main" Android:label= "@string/app_name" > <intent-filter> <action android:name= "Android.intent.action.MAIN"/> <category android:name= "Android.intent.category.LAUNCHER"/> </intent-filter> </activity> <service android:enabled= "true" android:name=. Music "/> </application> </manifest>