接上篇，接下來我們就來看一下如何掃描到周圍的手機藍牙，主要是經典藍牙

// 廣播接收發現藍牙設備

private BroadcastReceiver mReceiver = new BroadcastReceiver() {

@Override

public void onReceive(Context context, Intent intent) {

String action = intent.getAction();

if (BluetoothAdapter.ACTION_DISCOVERY_STARTED.equals(action)) {

Log.i("Lyb", "開始掃描...");

}

if (BluetoothDevice.ACTION_FOUND.equals(action)) {

BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);

if (device != null) {

if (device.getType() != BluetoothDevice.DEVICE_TYPE_LE)

Log.i("Lyb", "discovery==" + "設備名:" + device.getName() + "\n設備地址:" + device.getAddress());

}

}

if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {

Log.i("Lyb", "掃描結束.");

//

}

}

};

然后

// 注冊廣播接收器。

// 接收藍牙發現

IntentFilter filterFound = new IntentFilter(BluetoothDevice.ACTION_FOUND);

getPageContext().registerReceiver(mReceiver, filterFound);

IntentFilter filterStart = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_STARTED);

getPageContext().registerReceiver(mReceiver, filterStart);

IntentFilter filterFinish = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);

getPageContext().registerReceiver(mReceiver, filterFinish);

try {

Method setDiscoverableTimeout = BluetoothAdapter.class.getMethod("setDiscoverableTimeout", int.class);

setDiscoverableTimeout.setAccessible(true);

Method setScanMode = BluetoothAdapter.class.getMethod("setScanMode", int.class, int.class);

setScanMode.setAccessible(true);

setDiscoverableTimeout.invoke(BluetoothAdapter.getDefaultAdapter(), Integer.MAX_VALUE);

setScanMode.invoke(BluetoothAdapter.getDefaultAdapter(), BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE, Integer.MAX_VALUE);

} catch (Exception e) {

e.printStackTrace();

}

最后

mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();

mBluetoothAdapter.startDiscovery();

好了這樣就能獲取到最近的藍牙設備了

與50位技術專家面對面20年技術見證，附贈技術全景圖

總結

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