蓝牙原理Android代码实现

本文实例为大家分享了android实现蓝牙原理代码，供大家参考，具体内容如下

package com.example.se7en.testbluetooth;

import android.app.activity;
import android.bluetooth.bluetoothadapter;
import android.bluetooth.bluetoothdevice;
import android.bluetooth.bluetoothserversocket;
import android.bluetooth.bluetoothsocket;
import android.content.broadcastreceiver;
import android.content.context;
import android.content.intent;
import android.content.intentfilter;
import android.os.bundle;
import android.util.log;
import android.view.view;
import android.widget.adapterview;
import android.widget.edittext;
import android.widget.listview;
import android.widget.toast;

import java.io.ioexception;
import java.util.arraylist;
import java.util.list;
import java.util.uuid;

public class mainactivity extends activity
{

  private bluetoothadapter adapter;

  private myreceiver receiver;

  private listview mlistview;

  private list<bluetoothdevice> mdevices;

  private com.example.se7en.testbluetooth.deviceadapter mdeviceadapter;

  private bluetoothsocket msocket;

  private edittext et;

  @override
  protected void oncreate(bundle savedinstancestate)
  {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_main);
    mlistview = (listview) findviewbyid(r.id.lv);
    et = (edittext) findviewbyid(r.id.et);
    adapter = bluetoothadapter.getdefaultadapter();
    bluetoothhandler.getinstance().setcontext(this);
    init();
  }

  private void init()
  {
    initlistview();
    // 判断是否支持蓝牙功能
    if (adapter == null)
    {
      toast.maketext(this, "该手机不支持蓝牙功能", toast.length_long).show();
      return;
    }
    // 判断蓝牙功能是否打开
    if (!adapter.isenabled())
    {
      // 强行打开
//      adapter.enable();
      intent intent=new intent(bluetoothadapter.action_request_enable);
      startactivity(intent);
    }

    intentfilter filter = new intentfilter();
    // 注册扫描开始的广播
    filter.addaction(bluetoothadapter.action_discovery_started);
    // 注册扫描结束的广播
    filter.addaction(bluetoothadapter.action_discovery_finished);
    // 注册扫描已经找到设备的广播
    filter.addaction(bluetoothdevice.action_found);
    receiver = new myreceiver();
    registerreceiver(receiver, filter);
    startblueserver();
  }

  /**
   * 启动蓝牙服务
   */
  private void startblueserver()
  {
    new thread()
    {
      @override
      public void run()
      {
        while (true)
        {
          try
          {
            bluetoothserversocket serversocket = adapter
                .listenusingrfcommwithservicerecord(
                    "蓝牙服务",
                    uuid.fromstring("997f1b20-b4a0-45ea-a7dd-b2097299b1f6"));
            msocket = serversocket.accept();//阻塞
            bluetoothhandler.getinstance().setsocket(msocket);
          }
          catch (ioexception e)
          {
            e.printstacktrace();
          }
        }
      }
    }.start();
  }

  public void doclick(view view)
  {
    switch (view.getid())
    {
      case r.id.btn:
        mdevices.clear();
        mdeviceadapter.notifydatasetchanged();
        // 判断是否正在扫描，如果没在扫描那么就开始扫描
        if (!adapter.isdiscovering() && adapter.startdiscovery())
        {
          toast.maketext(this, "开始扫描周围的蓝牙设备", toast.length_long)
              .show();
        }
        break;
      case r.id.send:
        if ("".equals(et.gettext().tostring()))
        {
          toast.maketext(this, "内容不能为空", toast.length_short).show();
          return;
        }
        if (bluetoothhandler.getinstance().getsocket() == null)
        {
          toast.maketext(this, "还未连接设备", toast.length_short).show();
          return;
        }
        new thread()
        {
          @override
          public void run()
          {
            bluetoothhandler.getinstance().sendmessage(
                et.gettext().tostring());
          }
        }.start();
        break;
      case r.id.dis:
        bluetoothhandler.getinstance().closesocket();
        break;
    }
  }

  @override
  protected void ondestroy()
  {
    super.ondestroy();
    if (receiver != null)
    {
      // 注销广播
      unregisterreceiver(receiver);
    }
  }

  private void initlistview()
  {
    mdevices = new arraylist<bluetoothdevice>();
    mdeviceadapter = new com.example.se7en.testbluetooth.deviceadapter(this, mdevices);
    mlistview.setadapter(mdeviceadapter);
    mlistview.setonitemclicklistener(new adapterview.onitemclicklistener()
    {
      @override
      public void onitemclick(adapterview<?> parent, view view,
          int position, long id)
      {
        try
        {
          msocket = mdevices
              .get(position)
              .createrfcommsockettoservicerecord(
                  uuid.fromstring("997f1b20-b4a0-45ea-a7dd-b2097299b1f6"));
          msocket.connect();//阻塞
          toast.maketext(mainactivity.this, "连接成功",
              toast.length_short).show();
          bluetoothhandler.getinstance().setsocket(msocket);
        }
        catch (ioexception e)
        {
          e.printstacktrace();
        }

      }
    });
  }

  public class myreceiver extends broadcastreceiver
  {

    @override
    public void onreceive(context context, intent intent)
    {
      string action = intent.getaction();
      if (action.equals(bluetoothadapter.action_discovery_started))
      {
        log.i("info", "开始扫描");
      }
      else if (action.equals(bluetoothadapter.action_discovery_finished))
      {
        log.i("info", "扫描结束");
      }
      else if (action.equals(bluetoothdevice.action_found))
      {
        bluetoothdevice device = intent
            .getparcelableextra(bluetoothdevice.extra_device);
        log.i("info", device.getname() + ":" + device.getaddress());
        if (mdevices != null)
        {
          for (int i = 0; i < mdevices.size(); i++)
          {
            if (device.getaddress()
                .equals(mdevices.get(i).getaddress()))
            {
              return;
            }
          }
          mdevices.add(device);
          mdeviceadapter.notifydatasetchanged();
        }
      }
    }

  }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。