html5+ 监听usb动态

html5+ 监听usb动态

var main = plus.android.runtimeMainActivity();    
          var receiver = plus.android.implements('io.dcloud.feature.internal.reflect.BroadcastReceiver',{onReceive:getReceive});  
          var IntentFilter = plus.android.importClass('android.content.IntentFilter');  
          var Intent = plus.android.importClass('android.content.Intent');   
          var filter= new IntentFilter();  
          var action="android.hardware.usb.action.USB_STATE";  
              filter.addAction(action);   
              main.registerReceiver(receiver, filter);          
              function getReceive(context,intent)  
              {   
                   var type= intent.getAction();   
                       if(type==action)  
                       {  
                         var connected=intent.getExtras();   
                         plus.android.importClass(connected);   
                         var isusb=connected.getBoolean("connected");  
                             if(isusb)  
                             {  
                                 uni.showToast({title:"USB 已连接",icon:"none"});   
                             }else{  
                                 uni.showToast({title:"USB 已拔出",icon:"none"});   
                             }   
                       }   
              }