English 中文(简体)
How to add a horizontal 1px line above image view in a relative layout?
原标题:

How do I add a horizontal 1px white line above image view in a relative layout?

<RelativeLayout
android:id="@+id/widget38"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_x="108px"
android:layout_y="87px"
>  
<ImageView
android:id="@+id/widget39"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
>  
</ImageView>  
</RelativeLayout>
最佳回答

Just add the following line in your XML where ever you want it.

<View android:background="#ffffff" 
      android:layout_width = "match_parent" 
      android:layout_height="1dp"/>

Edit: Try this:

<RelativeLayout
android:id="@+id/widget38"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_x="108px"
android:layout_y="87px"
>
<View android:id="@+id/separator" 
 android:background="#ffffff" 
 android:layout_width = "fill_parent"
 android:layout_height="1dip"
 android:layout_centerVertical ="true"
 android:layout_alignParentTop="true"/>
<ImageView
 android:id="@+id/widget39"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_below="@id/separator"
 android:layout_alignParentRight="true"
/>  
</RelativeLayout>
问题回答

Consider moving the layout for the line into a separate file:

<!-- horizontal_line.xml -->
<?xml version="1.0" encoding="utf-8"?>
<View
    style="@style/HorizontalLine" />

... referencing a custom style definition:

<!-- styles.xml -->
<style name="HorizontalLine">
    <item name="android:layout_width">fill_parent</item>
    <item name="android:layout_height">@dimen/horizontal_line_height</item>
    <item name="android:background">@color/horizontal_line_fill_color</item>
    <item name="android:layout_marginTop">@dimen/large_spacer</item>
    <item name="android:layout_marginBottom">@dimen/large_spacer</item>
</style>

... and then you can include it in your layout:

<RelativeLayout
    android:id="@+id/widget38"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_x="108px"
    android:layout_y="87px" >

    <include
        android:id="@+id/horizontal_line"
        layout="@layout/horizontal_line" />

    <ImageView
        android:id="@+id/widget39"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/horizontal_line"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true" />

</RelativeLayout>




相关问题
Android - ListView fling gesture triggers context menu

I m relatively new to Android development. I m developing an app with a ListView. I ve followed the info in #1338475 and have my app recognizing the fling gesture, but after the gesture is complete, ...

AsyncTask and error handling on Android

I m converting my code from using Handler to AsyncTask. The latter is great at what it does - asynchronous updates and handling of results in the main UI thread. What s unclear to me is how to handle ...

Android intent filter for a particular file extension?

I want to be able to download a file with a particular extension from the net, and have it passed to my application to deal with it, but I haven t been able to figure out the intent filter. The ...

Android & Web: What is the equivalent style for the web?

I am quite impressed by the workflow I follow when developing Android applications: Define a layout in an xml file and then write all the code in a code-behind style. Is there an equivalent style for ...

TiledLayer equivalent in Android [duplicate]

To draw landscapes, backgrounds with patterns etc, we used TiledLayer in J2ME. Is there an android counterpart for that. Does android provide an option to set such tiled patterns in the layout XML?

Using Repo with Msysgit

When following the Android Open Source Project instructions on installing repo for use with Git, after running the repo init command, I run into this error: /c/Users/Andrew Rabon/bin/repo: line ...

Android "single top" launch mode and onNewIntent method

I read in the Android documentation that by setting my Activity s launchMode property to singleTop OR by adding the FLAG_ACTIVITY_SINGLE_TOP flag to my Intent, that calling startActivity(intent) would ...

From Web Development to Android Development

I have pretty good skills in PHP , Mysql and Javascript for a junior developer. If I wanted to try my hand as Android Development do you think I might find it tough ? Also what new languages would I ...

热门标签