使用StaggedGridLayoutManager[Android/Kotlin]的recyclerview中的ImageView高度过大

Question

它在用java编写的旧项目中运行良好

当相同的东西写在kotlin它不工作...

回收问题查看项目高度过大

lateinit var mImageProcessedRecyclerViewAdapater:ImageProcessedRecyclerViewAdapater
lateinit var mImageContainerAfterProcess: RecyclerView

//初始化适配器和项目装饰

    mImageContainerAfterProcess= findViewById(R.id.ImageContainerAfterProcess)

    mImageContainerAfterProcess.addItemDecoration(RecyclerViewItemDecoration(16))

    mImageContainerAfterProcess.layoutManager=StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL)

    mImageContainerAfterProcess.adapter=mImageProcessedRecyclerViewAdapater

项目视图xml文件

<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="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical">

<ImageView
    android:id="@+id/processedImage"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="2dp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

包含recyclerview的活动布局文件

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".activitis.ImageProcess">

    // layout height and width is match_constraint 
    <android.support.v7.widget.RecyclerView
        android:id="@+id/ImageContainerAfterProcess"
        android:layout_width="0dp"
        android:layout_height="0dp"
        tools:listitem="@layout/processd_image_item_view"
        app:layout_constraintEnd_toEndOf="parent" app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"/>
</android.support.constraint.ConstraintLayout>

我找不到我做错了什么

通过布局检查器捕获输出

我的旧项目输出

Answer 1

你的图像视图应该是这样的

   <ImageView
    android:id="@+id/processedImage"
    android:layout_width="match_parent"
    android:layout_height="200dp"
    android:padding="2dp"
    android:scaleType="fitXY"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent" />

Answer 2

wrap\u内容与约束布局的行为方式不同。要实现所需，您需要将以下代码添加到您的图像视图中，并将其宽度和高度设置为0dp

app:layout_constraintWidth_default="wrap"
app:layout_constraintHeight_default="wrap"

Answer 3

尝试将其添加到您处理的ImageImageView中。

android:scaleType="centerCrop"
android:adjustViewBounds="true"
//use centerCrop to fill staggered view or centerInside to avoid cropping.