控件看不见

1.

问题造成原因

在fragment里，线性布局里面有RecycView和最下面的一个LinearLayout，结果最下面的控件不显示

解决办法：

最外面加多一个

<androidx.core.widget.NestedScrollView

全部XML

<?xml version="1.0" encoding="utf-8"?>
<androidx.core.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context=".ui.fragment.BlankFragment3">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
        <androidx.recyclerview.widget.RecyclerView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/rv_latest"/>
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:gravity="center">

            <Button
                android:layout_weight="1"
                android:text="跳转到"
                android:background="@drawable/shape_blue"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/bt_jump"/>
            <EditText
                android:gravity="center"
                android:hint="页"
                android:inputType="number"
                android:maxLength="2"
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:id="@+id/et_pager"/>
            <!--上一页-->
            <com.deadline.statebutton.StateButton
                android:layout_weight="1"
                android:text="上一页"
                android:id="@+id/bt_previous"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                android:layout_gravity="center_horizontal"

                app:radius="5dp"
                app:round="true"
                app:animationDuration="200"

                app:strokeDashGap="2dp"
                app:strokeDashWidth="5dp"
                app:normalStrokeWidth="2dp"
                app:pressedStrokeWidth="2dp"
                app:unableStrokeWidth="2dp"

                app:normalStrokeColor="@android:color/white"
                app:pressedStrokeColor="@android:color/white"
                app:unableStrokeColor="@android:color/white"

                app:normalTextColor="@android:color/white"
                app:pressedTextColor="@android:color/white"
                app:unableTextColor="@android:color/white"

                app:normalBackgroundColor="@color/colorPrimaryDark"
                app:pressedBackgroundColor="@color/colorPrimaryDark"
                app:unableBackgroundColor="@color/colorPrimaryDark"/>
            <TextView
                android:id="@+id/tv_current_page"
                android:gravity="center"
                android:layout_width="40dp"
                android:layout_height="wrap_content"
                android:text="1"/>
            <com.deadline.statebutton.StateButton
                android:layout_weight="1"
                android:text="下一页"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/bt_next"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintRight_toRightOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                android:layout_gravity="center_horizontal"

                app:radius="5dp"
                app:round="true"
                app:animationDuration="200"

                app:strokeDashGap="2dp"
                app:strokeDashWidth="5dp"
                app:normalStrokeWidth="2dp"
                app:pressedStrokeWidth="2dp"
                app:unableStrokeWidth="2dp"

                app:normalStrokeColor="@android:color/white"
                app:pressedStrokeColor="@android:color/white"
                app:unableStrokeColor="@android:color/white"

                app:normalTextColor="@android:color/white"
                app:pressedTextColor="@android:color/white"
                app:unableTextColor="@android:color/white"

                app:normalBackgroundColor="@color/colorPrimaryDark"
                app:pressedBackgroundColor="@color/colorPrimaryDark"
                app:unableBackgroundColor="@color/colorPrimaryDark"/>
        </LinearLayout>
    </LinearLayout>

</androidx.core.widget.NestedScrollView>