android

Bluetooth蓝牙

Posted by アライさん on 2019年10月22日

BluetoothDevice

BluetoothDevice.getBondState()获取绑定状态。
BluetoothDevice.BOND_BONDING：正在绑定
BluetoothDevice.BOND_BONDED：已经绑定
BluetoothDevice.BOND_NONE：未绑定

所需权限：

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<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

获取已绑定的蓝牙设备列表

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BluetoothAdapter adapter =  BluetoothAdapter.getDefaultAdapter();
   Set<BluetoothDevice> devices = adapter.getBondedDevices();
   if (devices.size() > 0) {
      for (BluetoothDevice device : devices) {
          LogUtils.d(TAG, "已配对的设备：" +device.getName());
       }
    }

扫描蓝牙设备

和wifi类似，启动蓝牙扫描，然后接受扫描结果的广播
实测Android设置中的蓝牙，也只会扫描一次，用户点击扫描按钮才会再次扫描 

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BroadcastReceiver receiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if (BluetoothDevice.ACTION_FOUND.equals(action)) {
            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
            if (device != null) {
                // 添加到ListView的Adapter。
                LogUtils.d(TAG, device.getName());
            }
        }
    }
};

IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(BluetoothDevice.ACTION_FOUND);
intentFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);
intentFilter.addAction(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED);
intentFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
registerReceiver(receiver, intentFilter);

BluetoothAdapter adapter =  BluetoothAdapter.getDefaultAdapter();
adapter.startDiscovery();

@Override
public void onDestroy() {
    try {
        adapter.cancelDiscovery();
        unregisterReceiver(receiver);
    } catch (Exception e) {
        LogUtils.d(TAG, e.toString());
    }
    super.onDestroy();
}

打开关闭蓝牙

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BluetoothAdapter adapter =  BluetoothAdapter.getDefaultAdapter();
if (adapter.isEnabled()){
   adapter.disable();
    tvBluetooth.setText("已关闭蓝牙");
}else{
    adapter.enable();
    tvBluetooth.setText("已开启蓝牙");
}

绑定蓝牙设备

绑定蓝牙会发送BluetoothDevice.ACTION_BOND_STATE_CHANGED广播 

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BluetoothDevice device = list.get(position);
try {
    Method method = device.getClass().getMethod("createBond");
    method.invoke(device);
} catch (Exception e) {
    LogUtils.e(TAG, e.toString());
}

或者

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BluetoothDevice device = list.get(position);
device.createBond();

解除绑定蓝牙设备

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BluetoothDevice device = list.get(position);
Method removeBondMethod = device.getClass().getMethod("removeBond");
Boolean returnValue = (Boolean) removeBondMethod.invoke(device);



Tags
android