谨慎去获取控件的高和宽，以防带来不必要的性能问题

int w = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);
int h = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);
ssidtext.measure(w, h);
int width =ssidtext.getMeasuredWidth();
int height =ssidtext.getMeasuredHeight();

ViewTreeObserver vto = ssidtext.getViewTreeObserver();
vto.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
public boolean onPreDraw() {
int height = ssidtext.getMeasuredHeight();
int width = ssidtext.getMeasuredWidth();
return true;
}
});