Write Bluetooth AP on Android

參考網站

http://developer.android.com/guide/topics/wireless/bluetooth.html

所有的bluetooth API都在android.bluetooth  package下

BluetoothAdapter

允許你查詢local的資料(ex. MAC address), 搜尋設備, 初始化連線

首先使用BluetoothAdapter的getDefaultAdaper得到local device的handle

用意在於確認local設備是否存在(or 你可以使用getAddress得到local device MAC address)

之後得到的handle就可以使用startDiscovery
官方說會預設12秒搜尋時間

你可以先註冊兩個message
ACTION_FOUND and ACTION_DISCOVERY_FINISHED
註冊用意在於
ACTION_FOUND：有找到設備的時候通知
ACTION_DISCOVERY_FINISHED: 搜尋結束的時候通知



        // Register for broadcasts when a device is discovered
        IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
        this.registerReceiver(mReceiver, filter);

        // Register for broadcasts when discovery has finished
        filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
        this.registerReceiver(mReceiver, filter);




此外寫個接收端

private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if (BluetoothDevice.ACTION_FOUND.equals(action)) {
            } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
            }
}