Question

虽然我已经将RecyclerView高度设置为wrap_content，但是在项目之间创建了空间。在应用程序的开头，有一些元素（可以适合屏幕）没有空间但是当我再次滚动大空间时在每个项目之间创建

<android.support.v7.widget.RecyclerView
    android:id="@+id/recycler"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginBottom="8dp"
    android:layout_marginLeft="8dp"
    android:layout_marginRight="8dp"
    android:layout_marginTop="8dp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintHorizontal_bias="0.0"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/display"
    app:layout_constraintVertical_bias="0.0" />

ViewHolder布局

    <?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"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:ignore="GradleDependency">

    <TextView
        android:id="@+id/desgn"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginTop="8dp"
        android:text="@string/designation"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/name"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginLeft="32dp"
        android:layout_marginRight="8dp"
        android:layout_marginTop="8dp"
        android:text="@string/Name"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/desgn"
        tools:ignore="RtlHardcoded" />
</android.support.constraint.ConstraintLayout>

Answer 1

检查您的自定义布局。您必须将match_parent更改为wrap_content。

如果布局中的此布局变大，则

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"  //todo made the changes here
tools:ignore="GradleDependency">

<TextView
    android:id="@+id/desgn"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginLeft="8dp"
    android:layout_marginRight="8dp"
    android:layout_marginTop="8dp"
    android:text="@string/designation"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

<TextView
    android:id="@+id/name"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginLeft="32dp"
    android:layout_marginRight="8dp"
    android:layout_marginTop="8dp"
    android:text="@string/Name"
    app:layout_constraintHorizontal_bias="0.5"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/desgn"
    tools:ignore="RtlHardcoded" />

RecyclerView在每个项目之间创建大空间

1 个答案: