public bool dispatchTouchEvent(MotionEvent ev)
{
float x = ev.GetX();
float y = ev.GetY();
switch (ev.Action())
{
case MotionEventActions.Down:
mLastX = x;
mLastY = y;
mDownTime = Java.Lang.JavaSystem.CurrentTimeMillis();
mTmpAngle = 0;
if (isFling)
{
RemoveCallbacks(mFlingRunnable);
isFling = false;
return(true);
}
break;
case MotionEventActions.Move:
float start = getAngle(mLastX, mLastY);
float end = getAngle(x, y);
// Log.e("TAG", "start = " + start + " , end =" + end);
if (getQuadrant(x, y) == 1 || getQuadrant(x, y) == 4)
{
mStartAngle += end - start;
mTmpAngle += end - start;
}
else
{
mStartAngle += start - end;
mTmpAngle += start - end;
}
RequestLayout();
mLastX = x;
mLastY = y;
break;
case MotionEventActions.Up:
float anglePerSecond = mTmpAngle * 1000
/ (Java.Lang.JavaSystem.CurrentTimeMillis() - mDownTime);
// Log.e("TAG", anglePrMillionSecond + " , mTmpAngel = " +
// mTmpAngle);
if (Math.Abs(anglePerSecond) > mFlingableValue && !isFling)
{
Post(mFlingRunnable = new AutoFlingRunnable(anglePerSecond));
return(true);
}
if (Math.Abs(mTmpAngle) > NOCLICK_VALUE)
{
return(true);
}
break;
}
return(base.DispatchTouchEvent(ev));
}