我想从我的加速计传感器读取数据，并在第一个浮子数改变时进行比较。我有一些问题要取消注册监听器或暂停以便比较并查看平均值/ Note是否增加了一个完整的Int，例如“注意：5.677”增加到“注意：6.234”然后它应该被识别为事件。
我把它们变成了Ints，所以我可以检查它们是否相等。 我已经尝试使用Thread.Sleep延迟它并暂停但不起作用。也许是因为Lock（_synlock）？
public void OnSensorChanged(SensorEvent e)
{
lock (_syncLock)
{
avg = e.Values.Average();
_sensorTextView.Text = string.Format("x={0:f}, y={1:f}, z={2:f}", e.Values[0], e.Values[1], e.Values[2]);
_sensorTextView2.Text = string.Format("Note: {0}", avg);
note1 = e.Values.Average();
//Thread.Sleep(500);
//base.OnPause();
//_sensorManager.UnregisterListener(this);
//base.OnResume();
//_sensorManager.RegisterListener(this, _sensorManager.GetDefaultSensor(SensorType.Accelerometer), SensorDelay.Ui);
//_sensorTextView.Text = string.Format("x={0:f}, y={1:f}, z={2:f}", e.Values[0], e.Values[1], e.Values[2]);
//avg = e.Values.Average();
//_sensorTextView2.Text = string.Format("Note: {0}", avg);
//note2 = e.Values.Average();
}
int noteInt1 = Convert.ToInt32(note1);
int noteInt2 = Convert.ToInt32(note2);
//Thread.Sleep(2000); "zeige alle 2 sekunden an"
List<double> eventnumbers = new List<double> { };
if (noteInt1 != noteInt2)
{
avg = e.Values.Average();
//Console.WriteLine("bye");
_sensorTextView2.Text = string.Format("Note: {0}", avg);
//foreach(SensorEvent e){
eventnumbers.Add(new double()); //Value of avg is the value of the eventnumber element
eventnumbers.ForEach(Console.WriteLine);
}
}
更新：
public void OnSensorChanged(SensorEvent e)
{
lock (_syncLock)
{
_sensorTextView.Text = string.Format("x={0:f}, y={1:f}, y={2:f}", e.Values[0], e.Values[1], e.Values[2]);
//_sensorTextView2.Text = string.Format("Note: {0}", e.Values.Average());
avg = e.Values.Average();
}
eventCounter();
}
public void eventCounter()
{
eventnumbers.Add(avg); //add number to our buffer
Console.WriteLine(avg);
eventnumbers.Add(avg+1); //adding a number different of our first one to see if the method works
Console.WriteLine(avg+1);
while (eventnumbers.Count >= 1) //as long as two elements included
{
for (int puffer = 0; puffer <= 10; puffer++) //buffer of 10 Elements
{
for (int i = 0; i < eventnumbers.Count; i++) //compare first number of our buffer
{
note1 = eventnumbers[i]; //remember value of first element
Console.WriteLine(note1);
Console.WriteLine("i ist:" + i);
for (int j = 1; j <= eventnumbers.Count; j++) //with the second number of our buffer
{
Console.WriteLine("j ist:" + j);
note2 = eventnumbers[j]; //remember value of second element
Console.WriteLine(note2);
}
}
while (eventnumbers.Count >= 1) //as long as two elements included
{
try
{
noteInt1 = Convert.ToInt32(note1); //double to Int
noteInt2 = Convert.ToInt32(note2);
if (noteInt1 != noteInt2) //we parse to int in order to compare if event has changed
{
_sensorTextView2.Text = string.Format("Note: {0}", avg); //if yes update our displaying mark/number
eventcounters.Add(avg); //add element to elementcounter
}
break; //
}
catch (System.ArgumentOutOfRangeException) //for the case if there are less than 2 elements to compare
{
eventcounters.ForEach(Console.WriteLine); //return all marks(numbers) from our eventcounter
}
break;
} break;
}
//throw new NotImplementedException();
}
eventnumbers.Clear();
}
我的问题是，当我调用e.Value.Average（）时，我没有得到另一个（不同的）值。我需要在方法之外执行它并再次调用onSensorChanged但我不知道该怎么做，因为我需要创建另一个事件，对吧？这就是为什么我使用了e1和e2，但我认为我想念初始化的东西。
这就是我到目前为止创建两个事件的方法：
public class MainActivity : Activity, ISensorEventListener
{
static readonly object _syncLock = new Object();
SensorManager _sensorManager;
TextView _sensorTextView;
TextView _sensorTextView2;
double note1;
double note2;
double avg;
SensorEvent e1;
SensorEvent e2;
我的一个create（）：
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.activity_main);
_sensorManager = (SensorManager)GetSystemService(SensorService);
_sensorTextView = FindViewById<TextView>(Resource.Id.accelerometer_text);
_sensorTextView2 = FindViewById<TextView>(Resource.Id.accelerometer_note);
e1 = (SensorEvent)GetSystemService(ISensorEventListener);
e2 = (SensorEvent)GetSystemService(ISensorEventListener);
displayMark();
ISensorEventListener被标记为错误的顺便说一句
public void displayMark()
{
OnSensorChanged(e1);
note1 = e1.Values.Average();
OnSensorChanged(e2);
note2 = e2.Values.Average();
int noteInt1 = Convert.ToInt32(note1);
int noteInt2 = Convert.ToInt32(note2);
Console.WriteLine(noteInt1);
Console.WriteLine(noteInt2);
List<double> eventnumbers = new List<double> { };
if (noteInt1 != noteInt2)
{
avg = e2.Values.Average();
Console.WriteLine("bye");
_sensorTextView2.Text = string.Format("Note: {0}", avg);
//foreach(SensorEvent e){
eventnumbers.Add(new double()); //Value of avg is the value of the eventnumber element
}
eventnumbers.ForEach(Console.WriteLine);
我将在这里处理一般方法。我会使用事件记录一个值，然后将新的值与最后一个值进行比较，而不是试图在事件中等待一些新数据。因此，函数外部将是一个变量，如：
private int previousValue;
然后，当调用该函数时，它将'new'值与前一个值进行比较：
public void OnSensorChanged(SensorEvent e)
{
// Can't tell if this is required with information available
lock (_syncLock)
{
// Capture the 'new' data to a local variable
var newValue = e.Values.Average();
if (newValue != previousValue)
{
// Value has changed by required amount so do something here
}
// Update the previous so next we we use this as our reference value
previousValue = newValue;
}
这不是一个完整的解决方案，但应该是开发一个解决方案的更好的起点。