我正在尝试在彼此之下添加多个ConstraintLayouts。但他们似乎处于相同的位置。 (见图)。
问题:如何让ConstraintLayouts低于对方?
现在有什么乐趣:
示例1:
示例2:
它应该如何:
Activity.java
String response = (String) databaseManager.execute(phpLocation, parameters).get();
List<Review> listOfReviews = (List<Review>) EntityConverter.getInstance().jsonToObject(response,
new TypeToken<Collection<Review>>(){}.getType());
int totalscore = 0;
int amountOfReviews = 0;
RelativeLayout relativeLayoutReviews = (RelativeLayout) findViewById(R.id.relativeLayoutReviews);
for(Review r : listOfReviews) {
LayoutInflater vi = (LayoutInflater) getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = vi.inflate(R.layout.reviewtemplate, null);
v.setId(amountOfReviews);
TextView name = (TextView) v.findViewById(R.id.textViewReviewName);
name.setText(r.getName());
RatingBar ratingBar = (RatingBar) v.findViewById(R.id.ratingBarReviewScore);
ratingBar.setRating(r.getScore());
totalscore += r.getScore();
TextView ratingText = (TextView) v.findViewById(R.id.textViewReviewText);
ratingText.setText(r.getReviewtext());
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
if (amountOfReviews != 0) {
// add the rule that places your button below your EditText object
params.addRule(RelativeLayout.BELOW, v.getId() -1);
}
relativeLayoutReviews.addView(v, amountOfReviews);
amountOfReviews++;
}
reviewtemplate.xml(我试图插入的内容)
<?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:id="@+id/reviewTemplate"
android:layout_height="match_parent">
<TextView
android:id="@+id/textViewReviewName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Pietje"
android:textSize="24sp"
android:textColor="#000000"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent" />
<RatingBar
android:id="@+id/ratingBarReviewScore"
android:layout_width="243dp"
android:layout_height="58dp"
android:numStars="5"
android:rating="0"
android:layout_marginTop="8dp"
app:layout_constraintTop_toBottomOf="@+id/textViewReviewName"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_marginRight="8dp"
app:layout_constraintRight_toRightOf="parent" />
<TextView
android:id="@+id/textViewReviewText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginRight="8dp"
android:layout_marginTop="8dp"
android:text="Text"
android:textColor="#000000"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/ratingBarReviewScore" />
</android.support.constraint.ConstraintLayout>
RelativeLayout,它将包含所有评论。
<RelativeLayout
android:id="@+id/relativeLayoutReviews"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_marginStart="20dp"
android:layout_marginTop="1dp"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
</RelativeLayout>
答案 0 :(得分:1)
答案 1 :(得分:1)
这是因为根(父)布局是RelativeLayout而不是LinearLayout。
添加到RelativeLayout中的子视图不会一个接一个地定位,因为它们的父级根据其子属性布置其定位(因此定位是相对的)。
将它们添加到具有垂直方向的LinearLayout中。