ConstraintLayout作为RecyclerView项 [英] ConstraintLayout as RecyclerView Items

问题描述

我将ConstraintLayout用作RecyclerView项目.但是现在在真实计算机上显示了一些问题，预览中的问题不一样了

I use ConstraintLayout as RecyclerView item. But now there are some problems that are displayed on the real machine and in the preview is not the same

recyclerView项的布局如下:

The recyclerView item layout as follow:

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/foreground_item_undo"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/white"
    android:orientation="horizontal"
    app:layout_constraintWidth_default="spread">

    <com.lsl.wordhelper.view.RoundBgTextView
        android:id="@+id/tv_item_icon"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_marginStart="8dp"
        android:gravity="center"
        android:padding="4dp"
        android:text="G"
        android:textColor="@android:color/white"
        android:textSize="30sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/tv_item_explain"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="释义："
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="@id/tv_item_original"
        app:layout_constraintTop_toTopOf="parent" />


    <TextView
        android:id="@+id/tv_item_original"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:text="Good"
        android:textColor="@android:color/black"
        android:textSize="24sp"
        app:layout_constraintBottom_toTopOf="@id/tv_item_explain"
        app:layout_constraintLeft_toRightOf="@id/tv_item_icon"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/tv_item_translate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="很好"
        android:textColor="@android:color/black"
        android:textSize="16sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="@id/tv_item_original"
        app:layout_constraintTop_toBottomOf="@id/tv_item_explain" />

    <TextView
        android:id="@+id/tv_item_date"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="16dp"
        android:gravity="right"
        android:text="2018/01/19"
        android:textColor="@color/text_color_date"
        app:layout_constraintBottom_toBottomOf="@id/tv_item_original"
        app:layout_constraintRight_toRightOf="parent" />
</android.support.constraint.ConstraintLayout>

在Android Studio预览中.

In Android Studio preview .

但是在电话上

But on the phone

出什么问题了?

推荐答案

在您的代码中: layout_marginStart和layout_constraintLeft_toLeftOf不相同，应使用 layout_marginStart和layout_constraintStart_toStartOf或layout_margintLeft和layout_constraintLeft_toLeftOf保持相同.向左离开，开始的时间有些不同. 如果您想将constraintlayout作为recyclerview看到更多. https://developer.android.google.cn/reference/android/support/constraint/ConstraintLayout.html .

in you code: layout_marginStartandlayout_constraintLeft_toLeftOf didn't same ,you should use layout_marginStartandlayout_constraintStart_toStartOf or layout_margintLeftandlayout_constraintLeft_toLeftOf,keep same. left and start is diffent in some time. see that get more if you want to make constraintlayout as recyclerview. https://developer.android.google.cn/reference/android/support/constraint/ConstraintLayout.html.

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