Android编程之蓝牙测试实例

<?xml version="1.0" encoding="utf-8"?> 
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" 
 android:layout_width="fill_parent" 
 android:layout_height="fill_parent" android:orientation="vertical">
 <textview android:id="@+id/textview1" android:layout_width="wrap_content" android:text="textview" android:layout_height="wrap_content"></textview> 
 <linearlayout android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/linearlayout1"> 
  <button android:id="@+id/button1" android:text="off" android:layout_width="wrap_content" android:layout_height="wrap_content"></button> 
 </linearlayout> 
 <linearlayout android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/linearlayout2"> 
  <button android:id="@+id/button2" android:text="开启可见 " android:layout_width="wrap_content" android:layout_height="wrap_content"></button> 
  <textview android:id="@+id/textview2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="设备不可见 "></textview> 
 </linearlayout> 
 <linearlayout android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/linearlayout3"> 
  <button android:id="@+id/button3" android:text="扫描:off" android:layout_width="wrap_content" android:layout_height="wrap_content"></button> 
  <textview android:id="@+id/textview3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="停止扫描 "></textview> 
 </linearlayout> 
 <listview android:id="@+id/listview1" android:layout_height="wrap_content" android:layout_width="match_parent"></listview> 
</linearlayout>

package com.test_bluetooth; 
import java.util.set; 
import android.app.activity; 
import android.bluetooth.bluetoothadapter; 
import android.bluetooth.bluetoothdevice; 
import android.content.broadcastreceiver; 
import android.content.context; 
import android.content.intent; 
import android.content.intentfilter; 
import android.os.bundle; 
import android.os.countdowntimer; 
import android.view.view; 
import android.widget.arrayadapter; 
import android.widget.button; 
import android.widget.listview; 
import android.widget.textview; 
public class test_bluetooth extends activity implements view.onclicklistener 
{ 
 private static final int request_enable_bt = 2; 
 textview txt; 
 textview txt_see; 
 textview txt_scan; 
 bluetoothadapter mbluetoothadapter; 
 arrayadapter<string> marrayadapter; 
 button btn_switch; 
 button btn_see; 
 button btn_scan; 
 listview list; 
 countdowntimer see_timer; 
 countdowntimer scan_timer; 
 /** called when the activity is first created. */ 
 @override 
 public void oncreate(bundle savedinstancestate) 
 { 
  super.oncreate(savedinstancestate); 
  setcontentview(r.layout.main); 
  txt = (textview)findviewbyid(r.id.textview1); 
  txt_see = (textview)findviewbyid(r.id.textview2); 
  txt_scan = (textview)findviewbyid(r.id.textview3); 
  //绑定xml中的listview，作为item的容器 
  list = (listview) findviewbyid(r.id.listview1); 
  //获取蓝牙适配器 
  mbluetoothadapter = bluetoothadapter.getdefaultadapter(); 
  marrayadapter = new arrayadapter<string>(this,android.r.layout.simple_list_item_1);
  if (mbluetoothadapter == null) 
  { 
   // device does not support bluetooth 
   txt.settext("fail"); 
   //退出程序 
   test_bluetooth.this.finish(); 
  } 
  btn_switch = (button)findviewbyid(r.id.button1); 
  btn_switch.setonclicklistener(this); 
  btn_see = (button)findviewbyid(r.id.button2); 
  btn_see.setonclicklistener(this); 
  btn_see.setenabled(false);  
  btn_scan = (button)findviewbyid(r.id.button3); 
  btn_scan.setonclicklistener(this); 
  btn_scan.settext("扫描:off"); 
  btn_scan.setenabled(false); 
  //判断蓝牙是否已经被打开 
  if (mbluetoothadapter.isenabled()) 
  { 
   //打开 
   btn_switch.settext("on"); 
   btn_see.setenabled(true); 
   btn_scan.setenabled(true); 
  } 
  see_timer = new countdowntimer(120000,1000) 
  { 
   @override 
   public void ontick( long millisuntilfinished) 
   { 
    txt_see.settext( "剩余可见时间" + millisuntilfinished / 1000 + "秒"); 
   }   
   @override 
   public void onfinish() 
   { 
    //判断蓝牙是否已经被打开 
    if (mbluetoothadapter.isenabled()) 
    { 
     btn_see.setenabled(true); 
     txt_see.settext( "设备不可见"); 
    } 
   } 
  }; 
  scan_timer = new countdowntimer(12000,1000) 
  { 
   @override 
   public void ontick( long millisuntilfinished) 
   { 
    txt_scan.settext( "剩余扫描时间" + millisuntilfinished / 1000 + "秒"); 
   }   
   @override 
   public void onfinish() 
   { 
    //判断蓝牙是否已经被打开 
    if (mbluetoothadapter.isenabled()) 
    { 
     btn_scan.setenabled(true); 
     //关闭扫描 
     mbluetoothadapter.canceldiscovery(); 
     btn_scan.settext("扫描:off"); 
     txt_scan.settext( "停止扫描"); 
    } 
   } 
  }; 
 } 
 @override 
 protected void ondestroy() { 
  super.ondestroy(); 
  android.os.process.killprocess(android.os.process.mypid()); 
 } 
 @override 
 public void onclick(view v) 
 { 
  // todo auto-generated method stub 
  switch (v.getid()) 
  { 
  case r.id.button1: 
   { 
    string str = btn_switch.gettext().tostring(); 
    if (str == "off") 
    { 
     if (!mbluetoothadapter.isenabled()) 
     { 
      //打开蓝牙 
      intent enablebtintent = new intent(bluetoothadapter.action_request_enable); 
      startactivityforresult(enablebtintent, request_enable_bt); 
      txt.settext("s1"); 
      btn_see.setenabled(true); 
      btn_scan.settext("扫描:off"); 
      btn_scan.setenabled(true); 
     } 
    } 
    else 
    { 
     //关闭蓝牙 
     mbluetoothadapter.disable(); 
     btn_switch.settext("off"); 
     marrayadapter.clear(); 
     list.setadapter(marrayadapter); 
     btn_see.setenabled(false); 
     btn_scan.setenabled(false); 
    } 
    break; 
   } 
  case r.id.button2: 
  { 
   //开启可见 
   intent enablebtintent_see = new intent(bluetoothadapter.action_request_discoverable); 
   startactivityforresult(enablebtintent_see, 3); 
   txt.settext("s1"); 
   btn_see.setenabled(false); 
   see_timer.start(); 
   break; 
  } 
  case r.id.button3: 
  { 
   string str = btn_scan.gettext().tostring(); 
   if (str == "扫描:off") 
   { 
    txt.settext("s5"); 
    if (mbluetoothadapter.isenabled()) 
    { 
     //开始扫描 
     mbluetoothadapter.startdiscovery(); 
     txt.settext("s6"); 
     btn_scan.settext("扫描:on"); 
     // create a broadcastreceiver for action_found 
     final broadcastreceiver mreceiver = new broadcastreceiver() 
     { 
      @override 
      public void onreceive(context context, intent intent) 
      { 
       // todo auto-generated method stub 
       string action = intent.getaction(); 
       // when discovery finds a device 
       marrayadapter.clear(); 
       if (bluetoothdevice.action_found.equals(action)) 
       { 
        // get the bluetoothdevice object from the intent 
        bluetoothdevice device = intent.getparcelableextra(bluetoothdevice.extra_device); 
        // add the name and address to an array adapter to show in a listview 
        marrayadapter.add(device.getname() + ":" + device.getaddress()); 
       } 
       list.setadapter(marrayadapter); 
      } 
     }; 
     // register the broadcastreceiver 
     intentfilter filter = new intentfilter(bluetoothdevice.action_found); 
     registerreceiver(mreceiver, filter); // don't forget to unregister during ondestroy 
     scan_timer.start(); 
    } 
   } 
   else 
   { 
    //关闭扫描 
    mbluetoothadapter.canceldiscovery(); 
    btn_scan.settext("扫描:off"); 
    scan_timer.cancel(); 
    txt_scan.settext( "停止扫描"); 
   } 
   break; 
  } 
  default: 
   break; 
  } 
 } 
 public void onactivityresult(int requestcode, int resultcode, intent data) 
 { 
  switch (requestcode) 
  { 
  case request_enable_bt: 
   // when the request to enable bluetooth returns 
   if (resultcode == activity.result_ok) 
   { 
    // bluetooth is now enabled, so set up a chat session 
    btn_switch.settext("on"); 
    txt.settext("s4"); 
    //获取蓝牙列表 
    set<bluetoothdevice> paireddevices = mbluetoothadapter.getbondeddevices(); 
    marrayadapter.clear(); 
    // if there are paired devices 
    if (paireddevices.size() > 0) 
    { 
     //txt.settext("s3"); 
     // loop through paired devices 
     for (bluetoothdevice device : paireddevices) 
     { 
      // add the name and address to an array adapter to show in a listview 
      marrayadapter.add(device.getname() + ":" + device.getaddress()); 
     } 
     list.setadapter(marrayadapter); 
     } 
   } else 
   { 
    finish(); 
   } 
  } 
 } 
}