CardView 无法正常工作

Question

我使用 RecyclerView，我使用 CardView，因为 well.I 已经制定了所有这些标准程序（创建了 ViewHolder，实施了必要的方法）但问题是 CardView 的角不是 rounded.I 仅获取 CardView 的矩形角。

这里是适配器"main layout"的XML代码：

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

<android.support.v7.widget.CardView
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"
    android:layout_height="250dp"
    android:layout_margin="15dp"
    card_view:cardElevation="10dp"
    card_view:cardCornerRadius="30dp">

    <RelativeLayout
        android:layout_margin="20dp"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <TextView
            android:id="@+id/adapterText"
            android:text="@string/textCaption"
            android:layout_alignParentStart="true"
            android:layout_alignParentLeft="true"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/adapterDate"
            android:text="@string/date"
            android:layout_marginTop="10dp"
            android:layout_alignParentStart="true"
            android:layout_alignParentLeft="true"
            android:layout_below="@+id/adapterText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

    </RelativeLayout>

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

还有另一个带有 RecyclerView 的布局：

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_margin="10dp"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/contactList"
        android:scrollbars="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </android.support.v7.widget.RecyclerView>

</RelativeLayout>

以及 RecyclerView 的初始化：

@Override
public void onViewCreated(View root, Bundle savedInstanceState) {
    if (root != null) {
        RecyclerView mRecyclerContactList=(RecyclerView)(root.findViewById(R.id.contactList));
        mContactAdapter=new ContactAdapter(getContext(),mContextualMultiMode,mContactList);
        mRecyclerContactList.setAdapter(mContactAdapter);
        RecyclerView.ItemAnimator animator=new DefaultItemAnimator();
        mRecycle

rContactList.setItemAnimator(animator);
            RecyclerView.ItemDecoration mVerticalDecoration=new DividerItemDecoration
                    (getContext(), LinearLayoutManager.VERTICAL);
            mRecyclerContactList.addItemDecoration(mVerticalDecoration);
            mRecyclerContactList.setLayoutManager(new LinearLayoutManager(getContext()));

        }

    }

有人知道如何解决这个问题吗？

Answer 1

您好，请尝试使用此代码

<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:cardview="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="250dp"
    android:baselineAligned="false"
    android:elevation="6dp"
    cardview:cardCornerRadius="6dp"
    cardview:cardElevation="6dp"
    cardview:cardPreventCornerOverlap="false"
    cardview:cardUseCompatPadding="true"
    cardview:contentPadding="0dp">
</android.support.v7.widget.CardView>

Answer 2

Use this code when you are using cardview

<android.support.v7.widget.CardView
            android:id="@+id/cardview"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:elevation="100dp"
            card_view:cardBackgroundColor="@color/cardview_initial_background"
            card_view:cardCornerRadius="8dp"
            android:layout_marginLeft="@dimen/margin_large"
            android:layout_marginRight="@dimen/margin_large"
            >

Answer 3

作为 root 的 Cardview 给我带来了奇怪的问题。尝试以 root 身份使用 Relativelayout。

CardView 无法正常工作

CardView doesn't work properly

java

android

android-recyclerview

android-6.0-marshmallow

cardview