标签：java android android-sdcard sensor gyroscope

我正在做我的项目来记录加速度计和陀螺仪传感器的数据并将其保存到SD卡中的文件中.但是我有问题,当我开始录制超过1秒时,文件中的结果只有1个数据,包括1 x轴,1 y轴和1 z轴.理想情况下,我应该在记录文件时获得更多数据

  public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    //return inflater.inflate(R.layout.get_data, container, false);

    //get path from sdcard
    sdcard = Environment.getExternalStorageDirectory().getPath();

    rootView = inflater.inflate(R.layout.get_data, container,false);
    Button start = (Button) rootView.findViewById(R.id.buttonstart);
    Button stop = (Button) rootView.findViewById(R.id.buttonstop);

    //eksekusi saat klik button stop
    stop.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            rekam = false;
            // TODO Auto-generated method stub

            //sensorManager.unregisterListener(mySensorEventListener);
            //super.onStop();


        }
    });

    //eksekusi saat klik button start
    start.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            rekam = true;
            String nama = sdcard+"/datasensor.txt";
            namafile = new File(nama);



        }
    });
    return rootView;
public void onActivityCreated(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onActivityCreated(savedInstanceState);
    parent = getActivity();
    sensorManager = (SensorManager) parent.getSystemService(Context.SENSOR_SERVICE);
    sensor = sensorManager.getSensorList(Sensor.TYPE_ACCELEROMETER).get(0);
    sensorgyroscope = sensorManager.getSensorList(Sensor.TYPE_GYROSCOPE).get(0);

    koordinatX = (TextView)rootView.findViewById(R.id.coordinatx);
    koordinatY = (TextView)rootView.findViewById(R.id.coordinaty);
    koordinatZ = (TextView)rootView.findViewById(R.id.coordinatz);

    koordinatrollX = (TextView)rootView.findViewById(R.id.coordinatrollx);
    koordinatpitchY = (TextView)rootView.findViewById(R.id.coordinatpitchy);
    koordinatyawZ = (TextView)rootView.findViewById(R.id.coordinatyawz);

    sensorManager=(SensorManager) parent.getSystemService(Context.SENSOR_SERVICE);
    //add listener for accelerometer
    sensorManager.registerListener(this,sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),SensorManager.SENSOR_DELAY_NORMAL);
    //add listener for gyroscope
    sensorManager.registerListener(this, sensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE), SensorManager.SENSOR_DELAY_NORMAL); 
}

@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
    // TODO Auto-generated method stub

}

@Override
public void onSensorChanged(SensorEvent event) {
    // TODO Auto-generated method stub
    if(event.sensor.getType()==Sensor.TYPE_ACCELEROMETER)
    {

        //assign directions accelometer
        float x = event.values[0];
        float y = event.values[1];
        float z = event.values[2];

        koordinatX.setText("X: "+x);
        koordinatY.setText("Y: "+y);
        koordinatZ.setText("Z: "+z);

        if(rekam==true)
        {
            try
            {
                BufferedWriter out = new BufferedWriter(new FileWriter(namafile));
                out.write(Float.toString(event.values[0]) + Float.toString(event.values[1]) + Float.toString(event.values[2]) );
                out.close();
            }
            catch (IOException e)
            {
                System.out.println("Exception");
            }

        }
    }

    if(event.sensor.getType()==Sensor.TYPE_GYROSCOPE)
    {                   
        float roolX = event.values[0];
        float pitchY = event.values[1];
        float yawZ = event.values[2];


        koordinatrollX.setText("Orientation X (Roll) :" + Float.toString(event.values[0]));
        koordinatpitchY.setText("Orientation Y (Pitch) :" + Float.toString(event.values[1]));
        koordinatyawZ.setText("Orientation Z (Yaw):" + Float.toString(event.values[2]));

        if(rekam==true)
        {
            try
            {
            BufferedWriter out = new BufferedWriter(new FileWriter(namafile));
            out.write(Float.toString(event.values[0]) + Float.toString(event.values[1]) + Float.toString(event.values[2]) );
            out.close();
            }

            catch (IOException e)
            {
                System.out.println("Exception");
            }

        }
}

}
}

解决方法:

而不是buf.write(),尝试buf.append()

当你使用buf.write()时,它会附加新的传感器读数而不是写入

标签：java,android,android-sdcard,sensor,gyroscope
来源： https://codeday.me/bug/20190703/1371393.html

本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享；
2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关；
3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关；
4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除；
5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。