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
packagecom.example.se7en.testbluetooth;
importandroid.app.Activity;
importandroid.bluetooth.BluetoothAdapter;
importandroid.bluetooth.BluetoothDevice;
importandroid.bluetooth.BluetoothServerSocket;
importandroid.bluetooth.BluetoothSocket;
importandroid.content.BroadcastReceiver;
importandroid.content.Context;
importandroid.content.Intent;
importandroid.content.IntentFilter;
importandroid.os.Bundle;
importandroid.util.Log;
importandroid.view.View;
importandroid.widget.AdapterView;
importandroid.widget.EditText;
importandroid.widget.ListView;
importandroid.widget.Toast;
importjava.io.IOException;
importjava.util.ArrayList;
importjava.util.List;
importjava.util.UUID;
publicclassMainActivityextendsActivity
{
privateBluetoothAdapteradapter;
privateMyReceiverreceiver;
privateListViewmListView;
privateList<BluetoothDevice>mDevices;
privatecom.example.se7en.testbluetooth.DeviceAdaptermDeviceAdapter;
privateBluetoothSocketmSocket;
privateEditTextet;
@Override
protectedvoidonCreate(BundlesavedInstanceState)
{
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();
}
privatevoidinit()
{
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();
Intentintent=newIntent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivity(intent);
}
IntentFilterfilter=newIntentFilter();
//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=newMyReceiver();
registerReceiver(receiver,filter);
startBlueServer();
}
/**
*启动蓝牙服务
*/
privatevoidstartBlueServer()
{
newThread()
{
@Override
publicvoidrun()
{
while(true)
{
try
{
BluetoothServerSocketserverSocket=adapter
.listenUsingRfcommWithServiceRecord(
"蓝牙服务",
UUID.fromString("997f1b20-b4a0-45ea-a7dd-b2097299b1f6"));
mSocket=serverSocket.accept();//阻塞
BlueToothHandler.getInstance().setSocket(mSocket);
}
catch(IOExceptione)
{
e.printStackTrace();
}
}
}
}.start();
}
publicvoiddoClick(Viewview)
{
switch(view.getId())
{
caseR.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;
caseR.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;
}
newThread()
{
@Override
publicvoidrun()
{
BlueToothHandler.getInstance().sendMessage(
et.getText().toString());
}
}.start();
break;
caseR.id.dis:
BlueToothHandler.getInstance().closeSocket();
break;
}
}
@Override
protectedvoidonDestroy()
{
super.onDestroy();
if(receiver!=null)
{
//注销广播
unregisterReceiver(receiver);
}
}
privatevoidinitListView()
{
mDevices=newArrayList<BluetoothDevice>();
mDeviceAdapter=newcom.example.se7en.testbluetooth.DeviceAdapter(this,mDevices);
mListView.setAdapter(mDeviceAdapter);
mListView.setOnItemClickListener(newAdapterView.OnItemClickListener()
{
@Override
publicvoidonItemClick(AdapterView<?>parent,Viewview,
intposition,longid)
{
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(IOExceptione)
{
e.printStackTrace();
}
}
});
}
publicclassMyReceiverextendsBroadcastReceiver
{
@Override
publicvoidonReceive(Contextcontext,Intentintent)
{
Stringaction=intent.getAction();
if(action.equals(BluetoothAdapter.ACTION_DISCOVERY_STARTED))
{
Log.i("info","开始扫描");
}
elseif(action.equals(BluetoothAdapter.ACTION_DISCOVERY_FINISHED))
{
Log.i("info","扫描结束");
}
elseif(action.equals(BluetoothDevice.ACTION_FOUND))
{
BluetoothDevicedevice=intent
.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
Log.i("info",device.getName()+":"+device.getAddress());
if(mDevices!=null)
{
for(inti=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毛票票。