在ConstraintLayout中以编程方式添加视图 [英] Add a view programmatically in ConstraintLayout

问题描述

我尝试在ConstraintLayout中将另一个View添加到另一个View的同一位置，但是添加的View无法获得另一个View的LayoutParams.

I try to add a View at the same place of an other View in a ConstraintLayout but the added View don't get the LayoutParams of the other View.

添加的视图位于容器的顶部|左侧.

The added View take place on the top|left of the container.

这是我的代码:

TextView cloneView = new TextView(getContext());
cloneView.setLayoutParams(otherView.getLayoutParams());
mainContainer.addView(cloneView);

推荐答案

要将视图添加到ConstraintLayout中，必须使用ConstraintSet添加约束.

To add views to a ConstraintLayout you have to add the constraints using a ConstraintSet.

View v = findViewById(...);
ConstraintLayout cl = (ConstraintLayout) findViewById(...);


ConstraintSet c = new ConstraintSet();
cl.addView(v);
int id = v.getId();

c.clone(cl);
c.connect(id, ConstraintSet.Top, otherViewIdAboveV, ConstraintSet.BOTTOM, 0);
...
other constraints
...
c.applyTo(cl);

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