ConstraintLayout：以编程方式更改约束

小编典典

ConstraintLayout：以编程方式更改约束

all

我需要帮助ConstraintSet。我的目标是在代码中更改视图的约束，但我不知道如何正确地做到这一点。

我有 4TextView和 1 ImageView。我需要为ImageView其中一个设置约束TextView。

check_answer4 = (TextView) findViewById(R.id.check_answer4);
check_answer1 = (TextView) findViewById(R.id.check_answer1);
check_answer2 = (TextView) findViewById(R.id.check_answer2);
check_answer3 = (TextView) findViewById(R.id.check_answer3);

correct_answer_icon = (ImageView) findViewById(R.id.correct_answer_icon);

如果第一个答案是正确的，我需要将约束设置ImageView为

app:layout_constraintRight_toRightOf="@+id/check_answer1"
app:layout_constraintTop_toTopOf="@+id/check_answer1"

如果第二个答案是正确的，我需要将约束设置ImageView为

app:layout_constraintRight_toRightOf="@+id/check_answer2"
app:layout_constraintTop_toTopOf="@+id/check_answer2"

等等。

阅读 97

2022-07-28

共1个答案

小编典典

要将图像视图的约束设置为：
```
 app:layout_constraintRight_toRightOf="@+id/check_answer1"
```
app:layout_constraintTop_toTopOf=”@+id/check_answer1”

利用：

     ConstraintLayout constraintLayout = findViewById(R.id.parent_layout);
 ConstraintSet constraintSet = new ConstraintSet();
 constraintSet.clone(constraintLayout);
 constraintSet.connect(R.id.imageView,ConstraintSet.RIGHT,R.id.check_answer1,ConstraintSet.RIGHT,0);
 constraintSet.connect(R.id.imageView,ConstraintSet.TOP,R.id.check_answer1,ConstraintSet.TOP,0);
 constraintSet.applyTo(constraintLayout);

要将图像视图的约束设置为：
```
 app:layout_constraintRight_toRightOf="@+id/check_answer2"
```
app:layout_constraintTop_toTopOf=”@+id/check_answer2”

利用：

     ConstraintLayout constraintLayout = findViewById(R.id.parent_layout);
 ConstraintSet constraintSet = new ConstraintSet();
 constraintSet.clone(constraintLayout); 
 constraintSet.connect(R.id.imageView,ConstraintSet.RIGHT,R.id.check_answer2,ConstraintSet.RIGHT,0);      
 constraintSet.connect(R.id.imageView,ConstraintSet.TOP,R.id.check_answer2,ConstraintSet.TOP,0);
 constraintSet.applyTo(constraintLayout);

2022-07-28