private void cacheLayoutPositions() {
for (int i = 0; i < getChildCount(); i++) {
final ViewConstraints viewConstraints = mViewConstraints[i];
final View v = viewConstraints.getView();
if (viewConstraints.isHorizontalSpring() && !viewConstraints.isHorizontalSpringUsed()) {
throw new IllegalStateException(
"Horizontal weight defined but never used, please review your layout. Remember that the chain of views cannot divert when using springs: Problematic view (please also check other dependant views): "
+ v
+ ", problematic layout: "
+ this);
} else if (viewConstraints.isVerticalSpring() && !viewConstraints.isVerticalSpringUsed()) {
throw new IllegalStateException(
"Vertical weight defined but never used, please review your layout. Remember that the chain of views cannot divert when using springs: Problematic view (please also check other dependant views): "
+ v
+ ", problematic layout: "
+ this);
} else {
int anchor = 0;
try {
LayoutParams st = (LayoutParams) v.getLayoutParams();
anchor = LEFT;
st.left = viewConstraints.innerLeft.getValue();
anchor = RIGHT;
st.right = viewConstraints.innerRight.getValue();
anchor = TOP;
st.top = viewConstraints.innerTop.getValue();
anchor = BOTTOM;
st.bottom = viewConstraints.innerBottom.getValue();
v.measure(
MeasureSpec.makeMeasureSpec(st.right - st.left, MeasureSpec.EXACTLY),
MeasureSpec.makeMeasureSpec(st.bottom - st.top, MeasureSpec.EXACTLY));
} catch (IllegalStateException e) {
throw new IllegalStateException(
"View "
+ ANCHOR_NAMES[anchor]
+ " position could not be calculated, please review your layout. Remember that A.above = B and B.below = A are not equivalent in terms of calculation order, please refer to documentation. Problematic view (please also check other dependant views): "
+ v
+ ", problematic layout: "
+ this,
e);
} catch (StackOverflowError e) {
throw new IllegalStateException(
"Constraints of a view could not be resolved (circular dependency), please review your layout. Problematic view (please also check other dependant views): "
+ v
+ ", problematic layout: "
+ this);
}
}
}
}
