onScroll
can be called multiple times. If you only want to increment your counter once, you should cache the floats
and compare them - if they are different from the cached values, a new scroll has occurred.
Android onScroll problems
Domanda
@Override
public boolean onScroll(MotionEvent arg0, MotionEvent arg1, float arg2,
float arg3) {
// TODO Auto-generated method stub
if(arg0.getX()<arg1.getX()&&id!=0x7f020000)
{
previousId=id-1;
imageView.setImageResource(id);
id++;
}
else if(arg0.getX()>arg1.getX()&& id!=0x7f020004)
{
imageView.setImageResource(previousId);
}
return true;
}
The problem is when I scrolled, the id plus 2 instead 1. I don't understand why. Does someone can explain why? and how to solve it?
Soluzione
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