我正在开发一个应用程序,我必须连接到Android 4.3上的Bluetooth Low Energy设备。 我想这在我的应用程序,以显示RSSI,但它不工作蓝牙低功耗Rssi Android
@Override
public void onLeScan(final BluetoothDevice device, final int rssi, byte[] scanRecord) {
//final LeDeviceListAdapter deviceLe = new LeDeviceListAdapter(device, rssi, scanRecord);
runOnUiThread(new Runnable() {
@Override
public void run() {
mLeDeviceListAdapter.addDevice(device,rssi);
mLeDeviceListAdapter.notifyDataSetChanged();
}
});
我的名单适配器代码是:
private class LeDeviceListAdapter extends BaseAdapter {
private ArrayList<BluetoothDevice> mLeDevices;
private LayoutInflater mInflator;
public LeDeviceListAdapter() {
super();
mLeDevices = new ArrayList<>();
mInflator = MainActivity.this.getLayoutInflater();
}
public void addDevice(BluetoothDevice device) {
if (!mLeDevices.contains(device)) {
mLeDevices.add(device);
}
}
public BluetoothDevice getDevice(int position) {
return mLeDevices.get(position);
}
public void clear() {
mLeDevices.clear();
// notifyDataSetChanged();
}
@Override
public int getCount() {
return mLeDevices.size();
}
@Override
public Object getItem(int i) {
return mLeDevices.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
ViewHolder viewHolder;
// General ListView optimization code.
if (view == null) {
view = mInflator.inflate(R.layout.listitem_device,viewGroup, false);
viewHolder = new ViewHolder();
viewHolder.deviceAddress = (TextView) view.findViewById(R.id.device_address);
viewHolder.deviceName = (TextView) view.findViewById(R.id.device_name);
// viewHolder.signal = (TextView) view.findViewById(R.id.device_signal);
view.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) view.getTag();
}
BluetoothDevice device = mLeDevices.get(i);
//final String rssi_s=device.getRssi();
final String deviceName = device.getName();
/* ScanResult rssi=null;
final double rssi_s = rssi.getRssi();
String rssiString = String.valueOf(rssi_s);*/
//final String rssiString =getString(valueOf(rssi_s));
if
(deviceName != null && deviceName.length() > 0){
viewHolder.deviceName.setText(deviceName);
// viewHolder.signal.setText(rssiString);
}
else
viewHolder.deviceName.setText(R.string.unknown_device);
viewHolder.deviceAddress.setText(device.getAddress());
return view;
}
}
// Device scan callback.
private BluetoothAdapter.LeScanCallback mLeScanCallback =
new BluetoothAdapter.LeScanCallback() {
@Override
public void onLeScan(final BluetoothDevice device, final int rssi, byte[] scanRecord) {
//final LeDeviceListAdapter deviceLe = new LeDeviceListAdapter(device, rssi, scanRecord);
runOnUiThread(new Runnable() {
@Override
public void run() {
// String rssi_signal=String.valueOf(rssi);
mLeDeviceListAdapter.addDevice(device);
mLeDeviceListAdapter.notifyDataSetChanged();
}
});
}
};
static class ViewHolder {
TextView deviceName;
TextView deviceAddress;
//TextView signal;
}
你有任何想法如何,我可以显示这个? 我还需要在我的oncreate方法中输入这个吗?
mLeDeviceListAdapter=new LeDeviceListAdapter();
什么是不工作?你没有得到任何扫描结果,或设备列表适配器没有显示正确的东西?请发布列表适配器的代码。 – curob
我的应用可以显示信标的名称和Mac地址,但不是rssi,我敢肯定,我的代码中缺少某些东西,这就是为什么我希望以前有人做过这个操作,请指导我 – geniusme
显示您的适配器代码请。 – curob