ACTION_DISCOVERY_STARTED从未调用过android

概述我有下一个代码： public class AddPrinter extends ListActivity {@Overridepublic void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); bluetoothAdapter.startDiscovery(); 我有下一个代码：

public class AddPrinter extends ListActivity {@OverrIDepublic voID onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    bluetoothAdapter.startdiscovery();    filter = new IntentFilter();    filter.addAction(BluetoothDevice.ACTION_FOUND);    filter.addAction(BluetoothAdapter.ACTION_disCOVERY_STARTED);    filter.addAction(BluetoothAdapter.ACTION_disCOVERY_FINISHED);    registerReceiver(receiver,filter);}broadcastReceiver receiver = new broadcastReceiver() {    @OverrIDe    public voID onReceive(Context context,Intent intent) {        String action = intent.getAction();        System.out.println(action);        if (BluetoothDevice.ACTION_FOUND.equals(action)) {            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);            adapter.add(device);        }        else if (BluetoothAdapter.ACTION_disCOVERY_STARTED.equals(intent.getAction())) {            System.out.println("STARTED");        }        else if (BluetoothAdapter.ACTION_disCOVERY_FINISHED.equals(intent.getAction())) {            Utils.dialog.dismiss();        }    }};@H_404_12@  
我遇到的问题是如此奇怪,由于某种原因,从未调用过ACTION_disCOVERY_STARTED,但所有其他 *** 作都没问题,我缺少什么？感谢您的时间.
解决方法 试试这个  
  
  
public class AddPrinter extends ListActivity {@OverrIDepublic voID onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);            filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);              registerReceiver(receiver,filter);              filter = new IntentFilter(BluetoothAdapter.ACTION_disCOVERY_STARTED);              registerReceiver(receiver,filter);              filter = new IntentFilter(BluetoothAdapter.ACTION_disCOVERY_FINISHED);              registerReceiver(receiver,filter);              //             bluetoothAdapter.startdiscovery();}@H_404_12@  
把bluetoothAdapter.startdiscovery();注册接收后
                            	          总结       
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