I want to add a ViewStub
to my layout. This is how the ViewStub
should look like, as xml:
<ViewStub
android:id="@+id/viewstub_id"
android:layout="@layout/use_this_layout"
android:inflatedId="@+id/inflated_stub"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
I have come up with this code, but the layout is not showing.
I'm reusing the id
, because I'm deleting and adding the stub again. I guess the code not working has something to do with the constraints or the layout width/height, but I'm not sure. What am I doing wrong?
ViewStub vs = new ViewStub(this);
vs.setId(R.id.viewstub_id);
vs.setLayoutResource(R.layout.use_this_layout);
vs.setInflatedId(R.id.inflated_stub);
ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(0, 0);
vs.setLayoutParams(layoutParams);
ConstraintLayout cl = findViewById(R.id.viewStubWrapper);
ConstraintSet cs = new ConstraintSet();
cs.clone(cl);
cs.connect(ConstraintSet.PARENT_ID, ConstraintSet.TOP, ConstraintSet.PARENT_ID, ConstraintSet.BOTTOM);
cs.applyTo(cl);
cl.addView(vs); // the ConstraintLayout is the ViewStub's parent
vs.inflate();
I found something that seems to work:
ViewStub vs = new ViewStub(this);
vs.setId(R.id.viewstub_id);
vs.setLayoutResource(R.layout.use_this_layout);
vs.setInflatedId(R.id.inflated_stub);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
vs.setLayoutParams(lp);
ConstraintLayout cl = findViewById(R.id.viewStubWrapper);
cl.addView(vs);
vs.inflate();
Seems like I didn't need the constraints after all, I just needed to use LayoutParams.MATCH_PARENT
for width and height instead of 0.