LBPS.zip_java 蓝牙定位_定位_蓝牙 定位_蓝牙 精确定位_蓝牙定位

package com.moka; 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.content.ContextWrapper; /** 类名：LBPS(Local BlueTooth Position Service) *功能：取定位信息，以系统广播的方式将定位信息通知给应用层 *要求：只能在Android2.0及以上版本使用；使用此服务需要添加BLUETOOTH_ADMIN和BLUETOOTH权限 *@author ltu *@version v1.0.0 */ public class LBPS extends ContextWrapper{ /**LBPS 广播定位信息的广播动作*/ public static final String ACTION_LBPS_FINISHED = "com.moka.lbps.LBPS_RESULT"; /**LBPS 提取定位信息 */ public static final String EXTRA_LBPS_POSITION = "com.moka.lbps.position"; /**LBPS 提取定位状态*/ public static final String EXTRA_LBPS_STATE = "com.moka.lbps.result"; /**LBPS 提取失败描述*/ public static final String EXTRA_LBPS_FAILE_MESSAGE = "com.moka.lbps.failemessage"; public static final int ERROR = 0x00; public static final int STATE_LBPS_OK = 0x01; public static final int STATE_LBPS_FAILE = 0x02; /**蓝牙广播消息接收器 */ private BTBReceiver btbReceiver = null; /**蓝牙定位装置MAC地址*/ private String btMac; /**定位信息,默认值为"null"*/ private String lbpsPosition = "null"; /**记录是否定位成功*/ private boolean isLbpsOk = false; /**构造函数，LBPS(Context context,String Mac) *@param Context context:实例化LBPS的Context引用 *@param String Mac ：蓝牙定位装置中固定的蓝牙适配器地址*/ public LBPS(Context context, String mac){ super(context); btMac = mac; init(); } /**初始化LBPS服务*/ private void init(){ btbReceiver = new BTBReceiver(); if(btbReceiver != null){ //注册本地蓝牙适配器状态改变接收器 registerReceiver(btbReceiver, new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED)); //注册用于接收已经搜索到的蓝牙设备 registerReceiver(btbReceiver, new IntentFilter(BluetoothDevice.ACTION_FOUND)); //注册本地蓝牙适配器状态改变接收器 registerReceiver(btbReceiver, new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED)); } } /**停止LBPS服务*/ public void StopService(){ if(null != btbReceiver){ unregisterReceiver(btbReceiver); } } /**启动LBPS服务*/ public void StartService(){ if (!BTAdmin.getInstance().IsEnable()){ broadcast(false, "蓝牙原本关闭,请求打开蓝牙"); BTAdmin.getInstance().Open(); }else{ broadcast(false, "scan..."); beginSearch(); } } /**开始搜索定位信息*/ private void beginSearch(){ //如果正在搜索，先取消搜索 if(BTAdmin.getInstance().GetAdapter().isDiscovering()){ BTAdmin.getInstance().GetAdapter().cancelDiscovery(); } BTAdmin.getInstance().GetAdapter().startDiscovery(); } /**广播LBPS定位结果*/ private void broadcast(boolean isFond, String position){ Intent broadcastIndtent = new Intent(ACTION_LBPS_FINISHED); //设置定位信息广播数据 String name = (isFond)?EXTRA_LBPS_POSITION:EXTRA_LBPS_FAILE_MESSAGE; broadcastIndtent.putExtra(name, position); //设置定位状态广播数据 int lbpsResult = (isFond)?STATE_LBPS_OK:STATE_LBPS_FAILE; broadcastIndtent.putExtra(EXTRA_LBPS_STATE, lbpsResult); sendBroadcast(broadcastIndtent); } //定义广播事件消息接收器 private class BTBReceiver extends BroadcastReceiver{ public void onReceive(Context c, Intent intent) { String action = intent.getAction(); //蓝牙适配器状态改变广播消息 if (action.endsWith(BluetoothAdapter.ACTION_STATE_CHANGED)){ int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR); String strState; switch(state){ case BluetoothAdapter.STATE_OFF: //不必要再打开蓝牙，因为在StartService方法中，如果蓝牙关闭，则会打开。 //如果此时打开蓝牙，则将无法关闭蓝牙适配器 //BTAdmin.getInstance().Open(); strState = "STATE_OFF"; break; case BluetoothAdapter.STATE_ON: strState = "STATE_ON"; beginSearch(); break; case BluetoothAdapter.STATE_TURNING_OFF: strState="STATE_TURNING_OFF"; break; case BluetoothAdapter.STATE_TURNING_ON: strState = "STATE_TURNING_ON"; break; default: strState = "unkonw"; } broadcast(false, strState); } //获得已经搜索到的蓝牙设备 else if(action.endsWith(BluetoothDevice.ACTION_FOUND)){ BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); //如果是蓝牙定位装置,获取定位信息，取消搜索，发送定位信息广播 if(device.getAddress().endsWith(btMac)){ lbpsPosition = device.getName(); isLbpsOk = true; BTAdmin.getInstance().GetAdapter().cancelDiscovery(); broadcast(true, lbpsPosition); } } //搜索完毕 else if(action.endsWith(BluetoothAdapter.ACTION_DISCOVERY_FINISHED)){ if (!isLbpsOk){ broadcast(false, lbpsPosition); } isLbpsOk = false; } } }//结束BTBReceiver类定义 }