match_parent 宽度在 RecyclerView 中不起作用 [英] match_parent width does not work in RecyclerView

问题描述

我的 RecyclerView 和 item 具有 match_parent 宽度，但结果是:

My RecyclerView and item has match_parent width but the result is :

    <view
    class="android.support.v7.widget.RecyclerView"
    android:layout_width="match_parent"

和项目:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:fab="http://schemas.android.com/apk/res-auto"
android:id="@+id/ll_itm"
android:orientation="horizontal"
android:layout_width="match_parent"

完整:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:fab="http://schemas.android.com/apk/res-auto"
android:id="@+id/ll_itm"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weightSum="100"
android:gravity="right"
>


<Button
    android:layout_width="0dp"
    android:layout_weight="15"
    android:layout_height="fill_parent"
    android:text="ملاحظات"
    android:id="@+id/button" />

<LinearLayout
    android:layout_width="0dp"
    android:layout_height="fill_parent"
    android:layout_weight="20"
    android:gravity="center"
    >
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        >

        <com.getbase.floatingactionbutton.FloatingActionButton
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            fab:fab_plusIconColor="#ff56ff83"
            fab:fab_colorNormal="@color/d_red"
            fab:fab_colorPressed="#ff5c86ff"
            fab:fab_size="mini"
            fab:fab_icon="@drawable/ic_remove_white"
            android:id="@+id/fab_rmv" />
        <esfandune.ir.elmikarbordiardakan.other.CustomTxtView
            android:layout_weight="25"
            android:layout_width="0dp"
            android:layout_height="fill_parent"
            android:textAppearance="?android:attr/textAppearanceLarge"
            android:text="0"
            android:gravity="right|center_vertical"
            android:id="@+id/txt_takhir_itm" />
        <com.getbase.floatingactionbutton.FloatingActionButton
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            fab:fab_plusIconColor="@color/colorprimarylight"
            fab:fab_colorNormal="@color/colorprimarydark"
            fab:fab_colorPressed="@color/colorprimary"
            fab:fab_size="mini"
            fab:fab_icon="@drawable/ic_add_white"
            android:id="@+id/fab_add" />

    </LinearLayout>
</LinearLayout>
    <Spinner
        android:layout_width="0dp"
        android:layout_height="fill_parent"
        android:layout_weight="10"
        android:id="@+id/sp_nomre_itm"

        android:entries="@array/degrees"/>


<LinearLayout
    android:layout_width="0dp"
    android:layout_height="fill_parent"
    android:layout_weight="10"
    android:gravity="center"
    >
    <!--LinearLayout baraye ine ke nameshod fab ro weight behosh dad-->
    <com.getbase.floatingactionbutton.FloatingActionButton
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        fab:fab_plusIconColor="#ff56ff83"
        fab:fab_colorNormal="@color/d_green"
        fab:fab_colorPressed="@color/d_orange"
        fab:fab_size="normal"
        fab:fab_icon="@drawable/ic_done_white"
        android:id="@+id/fab_hazr" />



</LinearLayout>
<esfandune.ir.elmikarbordiardakan.other.CustomTxtView
    android:layout_weight="5"
    android:layout_width="0dp"
    android:layout_height="fill_parent"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:text="100"
    android:gravity="right|center_vertical"
    android:id="@+id/txt_ghybtNumber_itm" />

<esfandune.ir.elmikarbordiardakan.other.CustomTxtView
        android:layout_weight="30"
        android:layout_width="0dp"
        android:layout_height="fill_parent"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="عباسعلی ملاحسینی اردکانی"
        android:gravity="right|center_vertical"
        android:id="@+id/txt_title_itm"
    android:layout_marginRight="10dp"
    />

<view
    android:layout_width="0dp"
    android:layout_height="fill_parent"
    android:layout_weight="10"
    class="de.hdodenhof.circleimageview.CircleImageView"
    android:id="@+id/view"
    android:src="@drawable/mmrdf"
   />
</LinearLayout>

推荐答案

在你的适配器中，你在 onCreateViewHolder 中膨胀项目，是 inflate 的第二个参数调用 null?.

In your adapter where you are inflating the item in onCreateViewHolder, is the second parameter of the inflate call null?.

如果是这样，请将其更改为 parent，这是 onCreateViewHolder 函数签名中的第一个参数.

If so change it to parent which is the first parameter in the onCreateViewHolder function signature.

View rootView = LayoutInflater.from(context).inflate(R.layout.itemLayout, parent, false);

如果您需要第二个参数为 null 那么当您获得有关膨胀的视图引用时，请执行以下操作

If you need the second parameter to be null then when you get the view reference on inflating, do the following

View rootView = LayoutInflater.from(context).inflate(R.layout.itemLayout, null, false);
RecyclerView.LayoutParams lp = new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
rootView.setLayoutParams(lp);
return new RecyclerViewHolder(rootView);

这篇关于match_parent 宽度在 RecyclerView 中不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！