Question

我正在开发一个Android应用程序，其中我有一个ListView，我想为ListView中的每一行添加一个边框。通常添加边框应该不是问题，但设计规范中的边框只是一半。我怎样才能做到这一点？看看截图：

正如您可以看到灰线，即未触及屏幕一端的边框。

代码：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical">

    <ListView
        android:id="@+id/conversationList"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/relativeLayout3"
        />

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:background="@color/common_signin_btn_dark_text_default"
        android:orientation="horizontal"
        android:id="@+id/relativeLayout3">

        <ImageView
            android:id="@+id/trashImage"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_centerVertical="true"
            android:layout_marginLeft="46dp"
            android:layout_marginStart="46dp"
            android:src="@drawable/swappossible" />

        <ImageView
            android:id="@+id/swapImage"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignTop="@+id/trashImage"
            android:layout_centerHorizontal="true"
            android:src="@drawable/footerheart" />

        <ImageView
            android:id="@+id/button3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentEnd="true"
            android:layout_alignParentRight="true"
            android:layout_alignTop="@+id/swapImage"
            android:layout_marginBottom="5dp"
            android:layout_marginEnd="41dp"
            android:layout_marginRight="41dp"
            android:src="@drawable/footermessages" />
    </RelativeLayout>

</RelativeLayout>

更新了代码

以下是ListView中各行的代码。

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:descendantFocusability="blocksDescendants"
    android:orientation="horizontal"
    android:padding="5dip"
    android:background="@color/common_action_bar_splitter"

    >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:layout_marginLeft="5dp"
        android:layout_marginStart="5dp"
        android:layout_marginTop="5dp"
        android:layout_marginBottom="5dp"
        android:layout_marginRight="5dp"
        android:layout_marginEnd="5dp"
        >

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="150dp"
            >
            <ImageView
                android:layout_width="80dp"
                android:layout_height="80dp"
                android:id="@+id/seller"
                android:src="@drawable/perfume"
                android:background="@drawable/layout_image"
                android:layout_alignTop="@+id/buyer"
                android:layout_alignParentLeft="true"
                android:layout_alignParentStart="true" />
            <ImageView
                android:layout_width="80dp"
                android:layout_height="80dp"
                android:id="@+id/buyer"
                android:src="@drawable/mixer"

                android:background="@drawable/layout_image"
                android:layout_alignTop="@+id/uploader"
                android:layout_centerHorizontal="true" />

            <ImageButton
                android:layout_width="35dp"
                android:layout_height="35dp"
                android:id="@+id/swapButton"
                android:src="@drawable/swap_ready"
                android:background="@null"
                android:layout_marginTop="20dp"
                android:layout_marginLeft="8dp"
                android:layout_marginStart="8dp"
                android:layout_alignTop="@+id/uploader"
                android:layout_toRightOf="@+id/seller"
                android:layout_toEndOf="@+id/seller" />

            <TextView
                android:id="@+id/swapMessage"
                android:layout_width="170dp"
                android:layout_height="30dp"
                android:textAppearance="?android:attr/textAppearanceMedium"
                android:gravity="left"
                android:singleLine="true"
                android:text="Hey! I&apos;d like to swap..."
                android:layout_above="@+id/textView4"
                android:layout_alignParentLeft="true"
                android:layout_alignParentStart="true" />

            <TextView
                android:id="@+id/uploaderName"
                android:layout_width="100dp"
                android:layout_height="25dp"
                android:layout_gravity="center_horizontal|top"
                android:ellipsize="end"
                android:singleLine="true"
                android:gravity="center"
                android:scrollHorizontally="true"
                android:visibility="visible"
                android:textAppearance="?android:attr/textAppearanceMedium"

                android:text="Bridget"
                android:layout_below="@+id/uploader"
                android:layout_alignParentRight="true"
                android:layout_alignParentEnd="true" />

            <ImageView
                android:layout_width="60dp"
                android:layout_height="80dp"
                android:id="@+id/uploader"
                android:src="@drawable/lena_round"
                android:background="@null"
                android:layout_above="@+id/swapMessage"
                android:layout_alignLeft="@+id/uploaderName"
                android:layout_alignStart="@+id/uploaderName"
                android:layout_marginLeft="25dp"
                android:layout_marginStart="25dp"
                />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textAppearance="?android:attr/textAppearanceMedium"
                android:text="10 minutes ago"
                android:id="@+id/textView4"
                android:layout_alignParentBottom="true"
                android:layout_alignParentLeft="true"
                android:layout_alignParentStart="true"
                android:layout_alignRight="@+id/buyer"
                android:layout_alignEnd="@+id/buyer" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textAppearance="?android:attr/textAppearanceMedium"
                android:text="Morrison"
                android:id="@+id/uploaderLastName"
                android:gravity="center"

                android:layout_alignParentBottom="true"
                android:layout_alignLeft="@+id/uploaderName"
                android:layout_alignStart="@+id/uploaderName"
                android:layout_alignRight="@+id/uploaderName"
                android:layout_alignEnd="@+id/uploaderName" />
        </RelativeLayout>

    </LinearLayout>

    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_margin="3dp"
        android:layout_alignParentBottom="true"
        android:background="#555555"/>
</RelativeLayout>

谢谢。

Answer 1

To use a custom separator, you can add a View to the bottom of your list item xml:

<View background="#555555" height="1dp" width="match_parent" margin="5dp"/>

Adjust a color, size and margins for your requirements.

To remove a default system divider, use

<ListView
    android:divider="@null"
    ...
/>

Answer 2

Add the following given below at the bottom of your list item layout.

<View
    android:layout_width="match_parent"
    android:layout_height="5dp"
    android:layout_alignParentBottom="true"
    android:background="#d7d7d7"/>

or you can use recylerview like this

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

and please add the following in your build.gradle

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'com.android.support:design:23.1.1'
    compile 'com.android.support:recyclerview-v7:23.1.1'
}

Android：如何添加部分边框？

2 个答案: