如何通过Native 获取手机蓝牙已配对的外设硬件列表

// let arr = state.centralManager.retrieveConnectedPeripheralsWithServices();
// let arr = state.centralManager.retrieveConnectedPeripheralsWithServices(null);
// console.log("2. 中央外设管理器状态 state= ", arr);
var CBCentralManager = plus.ios.importClass("CBCentralManager");
var manager = new CBCentralManager();

        var delegate = plus.ios.implements("CBCentralManagerDelegate", {  
            "centralManagerDidUpdateState:": function(State) {  
                var www = State.plusGetAttribute('state');  
                if (www == 4) {  
                    console.log('请开启蓝牙');  
                }  
                console.log("2. 中央外设管理器状态 state= " + www);  
                console.log(JSON.stringify(www));  
            }  
        });  
        manager.initWithDelegatequeue(delegate,null);  
        console.log('1、开始扫描蓝牙外设....');  
        manager.scanForPeripheralsWithServicesoptions(null, null);  

目前我在uniapp里面写的代码是这样的， 不管是 retrieveConnectedPeripheralsWithServices 还是 scanForPeripheralsWithServicesoptions 都会使app 闪退。有成功的例子吗？处理蓝牙方面的