为什么我的蓝牙搜索不到设备？

如下代码，我测试好几遍不知道问题出在哪里，蓝牙是可以打开的，但就是搜索不到设备（我同时开了另外手机的蓝牙，并设置可发现），求大神解答！！！已经搞了很多天了！

document.addEventListener('plusready', function() {  
                document.getElementById("DingWei").addEventListener('tap', function() {  
                    main = plus.android.runtimeMainActivity();  
                    BluetoothAdapter = plus.android.importClass("android.bluetooth.BluetoothAdapter");  
                    BluetoothDevice = plus.android.importClass("android.bluetooth.BluetoothDevice");  
                    //          BluetoothSocket = plus.android.importClass("android.bluetooth.BluetoothSocket");  
                    BAdapter = BluetoothAdapter.getDefaultAdapter();  
                    var receiver = plus.android.implements('io.dcloud.android.content.BroadcastReceiver', {  
                        onReceive: function(context, intent) { //实现onReceiver回调函数  
                            plus.android.importClass(intent);  
                            var action = intent.getAction();  
                            console.log(action);  
                            //如果发现蓝牙热点  
                            if (BluetoothDevice.ACTION_FOUND == action) {  

                                alert(99);  
                            }  

                            main.unregisterReceiver(receiver);  
                        }  
                    });  
                    IntentFilter = plus.android.importClass('android.content.IntentFilter');  
                    var filter = new IntentFilter();  
                    filter.addAction(BluetoothDevice.ACTION_FOUND);  
                    filter.addAction(BAdapter.ACTION_STATE_CHANGED); //监听蓝牙开关   
                    filter.addAction(BAdapter.ACTION_DISCOVERY_STARTED);  
                    filter.addAction(BAdapter.ACTION_DISCOVERY_FINISHED);  
                    filter.addAction(BAdapter.ACTION_SCAN_MODE_CHANGED);  
                    main.registerReceiver(receiver, filter); //注册监听    
                    if (!BAdapter.isEnabled()) {  
                        BAdapter.enable(); //启动蓝牙  
                        BAdapter.startDiscovery();  
                    } else {  
                        BAdapter.disable();  
                    }  
                })  
            });