原因：getStringExtra()为空导致

解决：用以下判断接收

Bundle bundle = intent.getExtras();                if (bundle != null) {                    String data = bundle.getString(BluetoothLeService.EXTRA_DATA);                                       if (data != null) {                                           }                }

 

Bundle bundle = intent.getExtras(); if (bundle != null) {
      String data = bundle.getString(BluetoothLeService.EXTRA_DATA);     Log.e("mainData1",data); //显示到界面 if (data != null) {
          Log.e("mainData2",data); //初始化圆形进度条 initArcProgressBar(100,Integer.parseInt(data),"优");     } }