private void layoutChildren() {
final int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = getChildAt(i);
layoutChild(child);
}
}
private void measureAndLayoutChild(View v) {
int childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(getWidth(), MeasureSpec.EXACTLY);
int childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(getHeight(), MeasureSpec.EXACTLY);
measureChild(v, childWidthMeasureSpec, childHeightMeasureSpec);
layoutChild(v);
}