Question

我是初学的android编程我的问题是我如何在使用android的传感器中执行占空比，这样我需要在某个ON周期（即3秒）开始时注册Acc传感器并在此3秒内记录数据（无论何种类型的数据）关于传感器状态的改变和在开启周期（3秒）结束时取消注册同一传感器，然后传感器进入休眠周期关闭期间（例如10秒）然后再次重复操作。 / p>

如果可能在android中没有，请帮助我，如果它可能明确告诉我如何做到这一点？

我试着写这段代码但是没有验证我需要的东西!!

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    tv1 = (TextView) findViewById(R.id.textView1);
    tv2 = (TextView) findViewById(R.id.textView2);
    tv3 = (TextView) findViewById(R.id.textView3);
    tv4 = (TextView) findViewById(R.id.textView4);
    tv5 = (TextView) findViewById(R.id.textView5);
    sensorManager= (SensorManager) getSystemService(Context.SENSOR_SERVICE);
    eol = System.getProperty("line.separator");
    sdCard =getExternalFilesDir(FileName);
    file = new File(sdCard,FileName);
    csd = new collected_sensor_data();
    update_timer = new Timer();
    t = new MyTask();
    update_timer.scheduleAtFixedRate(t,0,3000);

}

class MyTask extends TimerTask {        
    @Override
    public void run() {
        //Called each time when 1000 milliseconds (1 second) (the period parameter)
        //We must use this function in order to change the text view text
        runOnUiThread(new Runnable() {

            @Override
            public void run() {

                csd.onSensorChanged(event);

            }

        });  


        }
    }
@Override
public void onResume() {
    super.onResume();
    startSimulation();
}

@Override
public void onPause() {
    super.onPause();
    stopSimulation();
}

class collected_sensor_data implements SensorEventListener{

    @Override
    public void onAccuracyChanged(Sensor arg0, int arg1) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        x= event.values[0];
        y= event.values[1];
        z= event.values[2];
        sum = x+y+z;
        tv1.setText(String.valueOf(sum));

    }
}
public void startSimulation(){

    sensorManager.registerListener(csd ,sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_NORMAL);
    sensorManager.registerListener(csd,sensorManager.getDefaultSensor(Sensor.TYPE_GRAVITY), SensorManager.SENSOR_DELAY_NORMAL);

}

public void stopSimulation(){
    sensorManager.unregisterListener(csd);
}

我怎么能做占空比传感器听众

0 个答案: