Experimental seven Bindservice analog communication

Lab Report

Course Name		Mobile Internet development based on Android platform		Date of experiment	April 22, 2016
Name of the experimental project		Bindservice Analog Communication		Location of the experiment	S30010
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 two-way communication between the start-up and Bindservice. 1) The implementation of a data transfer from the start side to the Bindservice end; 2) realize the use of Bindservice service to play the music in the project source file; 3) enable the audio volume to be controlled by the "add" and "lower" two buttons on the boot side. 4) The implementation of the "Pause" button to control the audio pause playback on the boot side.
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. Create a service in musicsetting using bind mode 2. Create a service Connection listener object 3. Create a class that inherits from the service Bindservice.java and modifies 4. Create an action monitor 5. Define volume control using Audiomanager initialization 6, using the Adjuststreamvolume method to achieve volume size adjustment, Setstreammute method set Mute
Four, the experimental results (the experimental source program list and operating results or experimental conclusions, experimental design drawings)
Code: Musicservice Class Code Public class Musicsetting extends Activity { Private TextView TV2; Private Button bindbtn; Private Button getservicebtn; Private Button strongbtn; Private Button lowbtn; Private CheckBox checkbox; Private Serviceconnection connection; protected void onCreate (Bundle savedinstancestate) { Super. OnCreate (savedinstancestate); Setcontentview (r.layout. Music_setting); Final Audiomanager maudiomanager= (Audiomanager) Getsystemservice (Context.      Audio_service); Volume Control initialization definition Final Intent Intent=new Intent (musicsetting. this, Bindservice. class); Tv2= (TextView) Findviewbyid (r.id. TextView2); Create a service Connection listener object Connection =new serviceconnection () { Public void onservicedisconnected (componentname arg0) { System. out. println ("Service is disconnected"); } Public void onserviceconnected (componentname arg0, IBinder arg1) { System.   out. println ("Service connected"); Create connection Get IBinder } }; Strongbtn= (Button) Findviewbyid (r.id. Strongbtn); Strongbtn.setonclicklistener (new Onclicklistener () { Public void OnClick (View arg0) { int currentvolume = Maudiomanager.getstreamvolume (Audiomanager. Stream_music); Increase volume, bring up the system volume control Maudiomanager.adjuststreamvolume (Audiomanager. Stream_music, Audiomanager. Adjust_raise, Audiomanager.     fx_focus_navigation_up); Parameter meaning: sound type, adjust the direction of the volume, optional flag bit Tv2.settext ("Current volume size is:" +currentvolume); } }); Lowbtn= (Button) Findviewbyid (r.id. Lowbtn); Lowbtn.setonclicklistener (new Onclicklistener () { Public void OnClick (View arg0) { Maudiomanager.adjuststreamvolume (Audiomanager. Stream_music, Audiomanager. Adjust_lower, Audiomanager.  fx_focus_navigation_up); Parameter meaning: sound type, adjust the direction of the volume, optional flag bit int currentvolume = Maudiomanager.getstreamvolume (Audiomanager. Stream_music); Tv2.settext ("Current volume size is:" +currentvolume); } }); checkbox= (CheckBox) Findviewbyid (r.id. CheckBox1); Checkbox.setonclicklistener (new Onclicklistener () { Public void OnClick (View arg0) { Maudiomanager.setstreammute (Audiomanager. Stream_music,true); } }); } } Bindservice Class Code: Public class Bindservice extends service{ Private int Count; Private Mybinder binder=New mybinder (); Public  class Mybinder extends binder{//Create a class Bindservice that inherits from the service, creating an inner class in the Bindservice class } Public void Oncreate () { Super. OnCreate (); System. out. println ("Service is Created"); } Public IBinder Onbind (Intent arg0) { System. out. println ("Service is binded"); return Binder; } } Run Result: () When you click the menu, it displays: Show after clicking Increase Volume Click Decrease Volume Display: Tick mute and click the increase volume again to display:
Five, Experimental summary (analysis of the results of the experiment, experience and improvement of experimental ideas)
At the beginning of the experiment when the idea is not clear, Mainactivity class, Musicsetting class, Bindservice class, Musicservice service between the relationship is very messy, do not know where to create service, Do not know how to create Servic with binding method, do not know where to create a service connection listener object. Some of the parameters of the constructor also do not understand what the meaning, and then carefully read the experimental steps and lesson plans, gradually realize the use of bindservice to adjust the volume size, set mute.
Experimental reviews
Experimental results			Guide Teacher Signature: Date

Experimental seven Bindservice analog communication