实验报告
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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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时间： 2024-08-24 09:15:51