Question

我有一个程序，一旦我收到来自我的网络服务的结果，我想通过蓝牙向设备发送命令：

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    switch (requestCode) {
      case DEVICE_FOUND:
        if (resultCode == Activity.RESULT_OK && data != null) {
            String deviceAddress = data.getStringExtra(BluetoothDevice.EXTRA_DEVICE);


            Log.d("nRFUART", "... onActivityResultdevice.address==" + deviceAddress);
            ((TextView) findViewById(R.id.txtState)).setText("Device found - configuration in process....");


            //activate a bluetooth connectivity to lock.

            if (mService.connect(deviceAddress)){
                Log.d("mService", " mService connected true");

            };

           //do a web service call for some values


            String rResult = "";


            WebServiceCallIO wsio = new WebServiceCallIO();
            try {

                rResult = wsio.execute(sURL + "ws/locki", deviceAddress,  Id, null, rResult).get();

                if (rResult == "") {
                    showMessage("Invalid request");
                }else{

                    btnTest.setEnabled(true);
                    instructDevice(rResult);
                }

            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        break;
    default:
        Log.e(“DeviceActivity", "wrong request code");
        break;
}

}

问题是，如果我让应用程序运行，当我来到线路时会收到错误＆＃34; instructDevice（rResult）;＆＃34;。如果我在调试模式下运行，请在＆＃34; btnTest.setEnabled（true）;＆＃34;设置断点，应用程序按原样运行。

我通过线

检查了与设备的连接

if (mService.connect(deviceAddress)){
            Log.d("mService", " mService connected true");

        };

并通过日志显示在我尝试指示设备之前系统日志服务已连接。

有人可以解释这段代码的错误吗？

谢谢！

如何在UART服务准备就绪时运行send device命令？

0 个答案: