接收蓝牙广播onReceive中getStringExtra()出现错误

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");    }}