我正在使用 Eclipse 开发一个 Android 应用程序来返回蓝牙设备的 RSSI 值。我已经修改了 Android 蓝牙聊天示例以满足我的需要，但是我在返回 RSSI 值时遇到了问题。点击Scan按钮以发现附近的设备后，它返回设备名称、设备地址，并且还假设返回 RSSI 值，但它null显示的是 RSSI。
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
// When discovery finds a device
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
// Get the BluetoothDevice object from the Intent
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
// Get the Bluetooth RSSI
short Rssi = intent.getShortExtra(BluetoothDevice.EXTRA_RSSI,Short.MIN_VALUE);
// If it's already paired, skip it, because it's been listed already
// Added getRssi()
if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
mNewDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress() + getRssi());
}
// When discovery is finished, change the Activity title
} else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
setProgressBarIndeterminateVisibility(false);
setTitle(R.string.select_device);
if (mNewDevicesArrayAdapter.getCount() == 0) {
String noDevices = getResources().getText(R.string.none_found).toString();
mNewDevicesArrayAdapter.add(noDevices);
}
}
}
};