如何向 ConstraintLayout 视图添加不同的权重

本文介绍了如何向 ConstraintLayout 视图添加不同的权重的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

在我的布局中，我有一个 ConstraintLayout 包含两个 TextView 元素.它们目前大小相同，但我希望它们具有 6:4 比率的不同权重.

In my layout, I have a ConstraintLayout containing two TextView elements. They are currently the same size, but I would like them to have different weights with a 6:4 ratio.

如何在我的 ConstraintLayout 中实现?

How can this be achieved in my ConstraintLayout?

In XML

创建一个水平链，然后使用app:layout_constraintHorizontal_weight属性:

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/one"
        android:layout_width="0dp"
        android:layout_height="48dp"
        android:background="#caf"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toLeftOf="@+id/two"
        app:layout_constraintHorizontal_weight="6"/>

    <TextView
        android:id="@+id/two"
        android:layout_width="0dp"
        android:layout_height="48dp"
        android:background="#fac"
        app:layout_constraintLeft_toRightOf="@+id/one"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintHorizontal_weight="4"/>

</android.support.constraint.ConstraintLayout>

创建您的视图并将它们添加到父ConstraintLayout.你需要给他们每个人一个 id 以便一切正常；你可以使用 View.generateViewId() 或者你可以为它们定义一个 id 资源.

Create your views and add them to the parent ConstraintLayout. You will need to give them each an id in order for everything to work; you can use View.generateViewId() or you can define an id resource for them.

// this will be MATCH_CONSTRAINTS width and 48dp height
int height = (int) (getResources().getDisplayMetrics().density * 48);
ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(0, height);

View left = new View(this);
left.setId(R.id.one);
parent.addView(left, params);

View right = new View(this);
right.setId(R.id.two);
parent.addView(right, params);

然后创建一个 ConstraintSet 对象并创建您的链:

Then create a ConstraintSet object and create your chain:

ConstraintSet set = new ConstraintSet();
set.clone(parent);

int[] chainIds = { R.id.one, R.id.two }; // the ids you set on your views above
float[] weights = { 6, 4 };
set.createHorizontalChain(ConstraintSet.PARENT_ID, ConstraintSet.LEFT,
                          ConstraintSet.PARENT_ID, ConstraintSet.RIGHT,
                          chainIds, weights, ConstraintSet.CHAIN_SPREAD);

set.applyTo(parent);

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ConstraintLayout