掃描,或發現的
- 獲取列表,所有的人在範圍
要獲取當前配對設備的列表並重復:
Set<BluetoothDevice> pairedDevices = BluetoothAdapter.getDefaultAdapter().getBondedDevices();
if (pairedDevices.size() > 0) {
for (BluetoothDevice d: pairdDevices) {
String deviceName = d.getName();
String macAddress = d.getAddress();
Log.i(LOGTAG, "paired device: " + deviceName + " at " + macAddress);
// do what you need/want this these list items
}
}
發現有點多一個複雜的操作。要做到這一點,你需要告訴BluetoothAdapter開始掃描/發現。當它發現事情時,它發出你需要用BroadcastReceiver接收的Intents。
首先,我們將設置接收器:
private void setupBluetoothReceiver()
{
BroadcastRecevier btReceiver = new BroadcastReciver() {
@Override
public void onReceive(Context context, Intent intent) {
handleBtEvent(context, intent);
}
};
IntentFilter eventFilter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
// this is not strictly necessary, but you may wish
// to know when the discovery cycle is done as well
eventFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
myContext.registerReceiver(btReceiver, eventFilter);
}
private void handleBtEvent(Context context, Intent intent)
{
String action = intent.getAction();
Log.d(LOGTAG, "action received: " + action);
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
Log.i(LOGTAG, "found device: " + device.getName());
} else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
Log.d(LOGTAG, "discovery complete");
}
}
現在所有剩下的就是告訴BluetoothAdapter開始掃描:
BluetoothAdapter btAdapter = BluetoothAdapter.getDefaultAdapter();
// if already scanning ... cancel
if (btAdapter.isDiscovering()) {
btAdapter.cancelDiscovery();
}
btAdapter.startDiscovery();
你只是聽是正確的acl connected/disconnect存在問題,因爲它可能在您的應用未運行或收聽廣播時發生 – behelit