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
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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移动技术网。
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