RecyclerView Abschneiden von Seiten von CardView

Question

Ich habe einen RecyclerView, der programmgesteuert CardViews aufbläst. Die linke Seite der Karte wird abgeschnitten und sie sind nicht zentriert. Wenn Sie mehr Code gebucht haben, würde ich mich freuen, dies zu tun. Hier

einige hilfreiche Code:

Aktivität:

<?xml version="1.0" encoding="utf-8"?> 

<LinearLayout 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_height="match_parent" 
    android:layout_width="match_parent" 
    app:layout_behavior="@string/appbar_scrolling_view_behavior" 
    tools:context=".Activity.ClassRoster" 
    tools:showIn="@layout/activity_class_roster" 
    android:orientation="vertical" 
    android:gravity="center"> 

<android.support.v7.widget.RecyclerView android:id="@+id/roster_recycler" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingStart="16dp" 
    android:paddingEnd="16dp" 
    android:paddingTop="16dp" 
    android:clipToPadding="false" 
    android:scrollbars="vertical" 
    android:gravity="center"/> 

</LinearLayout> 

Karten aufgeblasen:

<?xml version="1.0" encoding="utf-8"?> 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:card_view="http://schemas.android.com/apk/res-auto" 
    android:id="@+id/student_card_linlayout" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:orientation="vertical" 
    android:gravity="center"> 

<android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto" 
    android:id="@+id/student_card" 
    android:layout_width="@dimen/student_card_width" 
    android:layout_height="@dimen/student_card_height" 
    android:layout_marginBottom="8dp" 
    android:layout_marginEnd="8dp" 
    card_view:cardUseCompatPadding="true" 
    card_view:cardPreventCornerOverlap="false" 
    android:clickable="true" 
    android:foreground="@drawable/custom_bg" 
    card_view:cardCornerRadius="@dimen/student_card_radius" 
    card_view:cardElevation="@dimen/student_card_elevation"> 

    <RelativeLayout android:id="@+id/card_layout" 
     android:background="@color/a" 
     android:layout_width="match_parent" 
     android:layout_height="160dp"> 

     <TextView android:id="@+id/student_name" 
      android:layout_width="wrap_content" 
      android:layout_height="100dp" 
      android:textColor="@android:color/white" 
      android:text="TS" 
      android:textSize="@dimen/student_card_text_size" 
      android:gravity="center" 
      android:textIsSelectable="false" 
      android:layout_centerVertical="true" 
      android:layout_centerHorizontal="true" /> 

    </RelativeLayout> 

    <android.support.v7.widget.Toolbar android:id="@+id/card_toolbar" 
     android:layout_height="wrap_content" 
     android:layout_width="match_parent" 
     android:layout_gravity="bottom"> 

     <ImageView android:id="@+id/student_delete" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_gravity="bottom|end" 
      android:layout_marginBottom="25dp" 
      android:layout_marginEnd="5dp" 
      android:src="@drawable/ic_delete_black_24dp"/> 

     <ImageView android:id="@+id/student_absent" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_gravity="bottom|start" 
      android:layout_marginBottom="25dp" 
      android:src="@drawable/ic_change_history_black_24dp"/> 

    </android.support.v7.widget.Toolbar> 

</android.support.v7.widget.CardView> 

</LinearLayout> 

Answer 1

Um Ihren Text Zentrum zu machen, ändern TextView Breite match_parent

<RelativeLayout android:id="@+id/card_layout" 
    > 

     <TextView android:id="@+id/student_name" 
      android:layout_width="match_parent" // before it is wrap_content 
      ... /> 

    </RelativeLayout> 

Sie Ihr unten in der Mitte richtig

// I organize the flow of your layout from left-to-right 
// Before it is right-to-left 

<android.support.v7.widget.Toolbar android:id="@+id/card_toolbar" 
     android:layout_height="wrap_content" 
     android:layout_width="match_parent" 
     android:layout_gravity="bottom"> 

     <ImageView android:id="@+id/student_absent" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_gravity="bottom|start" 
      android:layout_marginBottom="25dp" 
      android:src="@drawable/ic_change_history_black_24dp"/> 

     <ImageView android:id="@+id/student_delete" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_gravity="bottom|end" 
      android:layout_marginBottom="25dp" 
      android:src="@drawable/ic_delete_black_24dp"/> 

    </android.support.v7.widget.Toolbar> 

Hope this Hilfe