如何将回收视图放在微调器的底部

Question

我在片段中使用约束布局。我已经设置了 TopToBottomOf 虽然它没有到达底部。

<Spinner
        android:id="@+id/filterSpinner"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"
        android:layout_marginRight="10dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"

        tools:ignore="SpeakableTextPresentCheck,TouchTargetSizeCheck" />

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerViewCallLog"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/filterSpinner" />

我设置了它app:layout_constraintTop_toBottomOf="@+id/filterSpinner"。我想将 recyclerView 放在 Spinner 的底部。我要做到无边无际。

页面中的约束布局似乎不起作用。因此我展示了整个 xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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:layout_width="match_parent"
    android:layout_marginTop="30dp"
    android:layout_height="match_parent"
    tools:context=".fragment.DialerFragment">

    <Spinner
        android:id="@+id/filterSpinner"
        android:layout_width="match_parent"
        android:layout_height="20dp"
        android:layout_marginTop="5dp"
        android:layout_marginRight="10dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"

        tools:ignore="SpeakableTextPresentCheck,TouchTargetSizeCheck" />

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerViewCallLog"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="20dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/filterSpinner" />

    <com.futuremind.recyclerviewfastscroll.FastScroller
        android:id="@+id/fastscroll_dialer"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:orientation="vertical"
        app:fastscroll__bubbleColor="#5e64ce"
        app:fastscroll__handleColor="#8f93d1"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@id/recyclerViewCallLog"
        app:layout_constraintTop_toTopOf="@+id/recyclerViewCallLog" />

</androidx.constraintlayout.widget.ConstraintLayout>

Answer 1

您只需为 RecyclerView 设置 0dp 高度。如下图

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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:layout_width="match_parent"
    android:layout_marginTop="30dp"
    android:layout_height="match_parent">

    <Spinner
        android:id="@+id/filterSpinner"
        android:layout_width="match_parent"
        android:layout_height="20dp"
        android:layout_marginTop="5dp"
        android:layout_marginRight="10dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"

        tools:ignore="SpeakableTextPresentCheck,TouchTargetSizeCheck" />

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerViewCallLog"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_marginTop="20dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/filterSpinner" />

    <com.futuremind.recyclerviewfastscroll.FastScroller
        android:id="@+id/fastscroll_dialer"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:orientation="vertical"
        app:fastscroll__bubbleColor="#5e64ce"
        app:fastscroll__handleColor="#8f93d1"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@id/recyclerViewCallLog"
        app:layout_constraintTop_toTopOf="@+id/recyclerViewCallLog" />

</androidx.constraintlayout.widget.ConstraintLayout>

如何将回收视图放在微调器的底部

how to put recyclerview on bottom of spinner

xml

android

constraints

android-constraintlayout