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课程名称 |
基于Android平台移动互联网开发 |
实验日期 |
2016年4月22日 |
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实验项目名称 |
BindService模拟通信 |
实验地点 |
S30010 |
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实验类型 |
□验证型 √设计型 □综合型 |
学 时 |
2 |
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一、实验目的及要求（本实验所涉及并要求掌握的知识点） |
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1．目的：实现启动端和BindService之间的双向通信 2．要求：实现从启动端传递一个数据至BindService端； 实现使用BindService服务播放项目源文件中的音乐； 实现在启动端通过“增加”和“降低”两个按钮控制音频音量大小。 实现在启动端通过“暂停”按钮控制音频暂停播放。 |
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二、实验环境（本实验所使用的硬件设备和相关软件） |
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(1)PC机 (2)操作系统：Windows XP (3)软件： Eclipse, JDK1.6，Android SDK，ADT |
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三、实验内容及步骤 |
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1）完善Activity类 2）新建Service类 |
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四、实验结果（本实验源程序清单及运行结果或实验结论、实验设计图）
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代码： import android.app.Service; import android.content.Context; import android.content.Intent; import android.media.AudioManager; import android.media.MediaPlayer; import android.os.Binder; import android.os.IBinder; public class BindService extends Service{ private MediaPlayer mp; private int count; private boolean quit; private MyBinder binder=new MyBinder(); public class MyBinder extends Binder{ public int getCount() { return count; } public void MusicStar() { mp=MediaPlayer.create(BindService.this,R.raw.big); mp.start(); } public void MusicPause() { mp.pause(); } public void MusicStop() { mp.stop(); } } @Override public IBinder onBind(Intent arg0) { // TODO Auto-generated method stub System.out.println("Service is Binded"); return binder; } @Override public void onCreate() { // TODO Auto-generated method stub super.onCreate(); System.out.println("Service is Created"); new Thread() { public void run() { while(!quit) { try { Thread.sleep(1000); } catch ( InterruptedException e) { // TODO: handle exception } count++; } }; }.start(); } @Override public int onStartCommand(Intent intent, int flags, int startId) { // TODO Auto-generated method stub //mp.start(); //mp.pause(); return super.onStartCommand(intent, flags, startId); } @Override public boolean onUnbind(Intent intent) { // TODO Auto-generated method stub System.out.println("Service is Unbinded"); return super.onUnbind(intent); } @Override public void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); this.quit=true; System.out.println("Service is Destroyed"); } } package com.example.bindservicedemo; import android.app.Activity; import android.app.Service; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.ServiceConnection; import android.media.AudioManager; import android.os.Bundle; import android.os.IBinder; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.Toast; public class MainActivity extends Activity { private Button bind,unbind,getServiceStatus,intentServiceButton,comServiceButton,star,stop,pause,voicejia,voicejian; private BindService.MyBinder binder; private ServiceConnection conn=new ServiceConnection() { @Override public void onServiceDisconnected(ComponentName arg0) { // TODO Auto-generated method stub System.out.println("Service is disconnected"); } @Override public void onServiceConnected(ComponentName arg0, IBinder arg1) { // TODO Auto-generated method stub System.out.println("Service Connected"); binder=(BindService.MyBinder) arg1; } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); bind=(Button)findViewById(R.id.button1); unbind=(Button)findViewById(R.id.button3); getServiceStatus=(Button)findViewById(R.id.button2); intentServiceButton=(Button)findViewById(R.id.button4); comServiceButton=(Button)findViewById(R.id.button5); star=(Button) findViewById(R.id.buttonStar); pause=(Button) findViewById(R.id.buttonPause); stop=(Button) findViewById(R.id.buttonStop); voicejian=(Button) findViewById(R.id.buttonVoicejian); voicejia=(Button) findViewById(R.id.buttonVoicejia); final Intent intent=new Intent(MainActivity.this,BindService.class); //绑定方式创建Service bind.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub bindService(intent, conn, Service.BIND_AUTO_CREATE); } }); //解绑Service unbind.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub unbindService(conn); } }); //获取Service状态 getServiceStatus.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub Toast.makeText(MainActivity.this, "Service 的count值为："+binder.getCount(), Toast.LENGTH_LONG).show(); } }); //普通Service创建方式 comServiceButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub Intent intent=new Intent(MainActivity.this,ComService.class); startService(intent); } }); //使用IntentService方式创建 intentServiceButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub Intent intent=new Intent(MainActivity.this,MyIntentService.class); startService(intent); } }); star.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub binder.MusicStar(); } }); pause.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub binder.MusicPause(); } }); stop.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub binder.MusicStop(); } }); voicejian.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub AudioManager mAudioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE); mAudioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC,AudioManager.ADJUST_LOWER, AudioManager.FX_FOCUS_NAVIGATION_UP); } }); voicejia.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub AudioManager mAudioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE); mAudioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC,AudioManager.ADJUST_RAISE, AudioManager.FX_FOCUS_NAVIGATION_UP); } }); } @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; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } }
运行结果：（截图）
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五、实验总结（对本实验结果进行分析，实验心得体会及改进意见） |
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这次实验相对来说比较难，也睡通过别人的帮助和上网找资料才勉强完成，感觉掌握得还是不够。 |
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实验评语 |
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实验成绩 |
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指导教师签名： 年 月 日 |
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原文地址：http://www.cnblogs.com/woaiQ1314/p/5453136.html
