Style Bottom Line in Android

Style bottom Line in Android

It's kind of a hack, but I think this is probably the best way to do it. The dashed line will always be on the bottom, regardless of the height.

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <item>
        <shape android:shape="rectangle" >
            <solid android:color="#1bd4f6" />
        </shape>
    </item>

    <item android:top="-2dp" android:right="-2dp" android:left="-2dp">
        <shape>
            <solid android:color="@android:color/transparent" />
            <stroke
                android:dashGap="10px"
                android:dashWidth="10px"
                android:width="1dp"
                android:color="#ababb2" />
        </shape>
    </item>

</layer-list>

Explanation:

The second shape is transparent rectangle with a dashed outline. The key in making the border only appear along the bottom lies in the negative margins set the other sides. These negative margins "push" the dashed line outside the drawn area on those sides, leaving only the line along the bottom. One potential side-effect (which I haven't tried) is that, for views that draw outside their own bounds, the negative-margin borders may become visible.

Is there an easy way to add a border to the top and bottom of an Android View?

In android 2.2 you could do the following.

Create an xml drawable such as /res/drawable/textlines.xml and assign this as a TextView's background property.

<TextView
android:text="My text with lines above and below"
android:background="@drawable/textlines"
/>

/res/drawable/textlines.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
    <item>
      <shape 
        android:shape="rectangle">
            <stroke android:width="1dp" android:color="#FF000000" />
            <solid android:color="#FFDDDDDD" />

        </shape>
   </item>

   <item android:top="1dp" android:bottom="1dp"> 
      <shape 
        android:shape="rectangle">
            <stroke android:width="1dp" android:color="#FFDDDDDD" />
            <solid android:color="#00000000" />
        </shape>
   </item>

</layer-list>

The down side to this is that you have to specify an opaque background colour, as transparencies won't work. (At least i thought they did but i was mistaken). In the above example you can see that the solid colour of the first shape #FFdddddd is copied in the 2nd shapes stroke colour.

Add only top and bottom border on LinearLayout

Make this two file and put this code. you can set border top and bottom border,

main.xml

<TextView
      android:text="This is textline"
      android:background="@drawable/border_set"
/>

border_set.xml

This file located into full path project_root/res/drawable/border_set.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
    <item>
      <shape 
        android:shape="rectangle">
            <stroke android:width="1dp" android:color="#FF000000" />
            <solid android:color="#FFDDDDDD" />

        </shape>
   </item>

   <item android:top="1dp" android:bottom="1dp"> 
      <shape 
        android:shape="rectangle">
            <stroke android:width="1dp" android:color="#000" />
            <solid android:color="#FFFFFF" />
        </shape>
   </item>

</layer-list>

Changing EditText bottom line color with appcompat v7

Finally, I have found a solution. It simply consists of overriding the value for colorControlActivated, colorControlHighlight and colorControlNormal in your app theme definition and not your edittext style. Then, think to use this theme for whatever activity you desire. Below is an example:

<style name="Theme.App.Base" parent="Theme.AppCompat.Light.DarkActionBar">
    <item name="colorControlNormal">#c5c5c5</item>
    <item name="colorControlActivated">@color/accent</item>
    <item name="colorControlHighlight">@color/accent</item>
</style>

Need to apply a style for getting rid of bottom line on Entry

In case you didn't see this while you were researching, here is a solution posted to Github by dkudelko which is probably a little simpler if you are just trying to remove the underline.

To do this simply create a class in you Android project called NoUnderlineEntry then add this code.

using <YourApp>.Droid;
using Xamarin.Forms;
using Xamarin.Forms.Platform.Android;    

[assembly: ExportRenderer(typeof(Entry), typeof(NoUnderlineEntry))]
namespace <YourApp>.Droid
{
    public class NoUnderlineEntry : EntryRenderer
    {
        protected override void OnElementChanged(ElementChangedEventArgs<Entry> e)
        {
            base.OnElementChanged(e);
            Control?.SetBackgroundColor(Android.Graphics.Color.Transparent);
        }
    }
}

After you replace with the name of your app, you will have created a custom renderer that overrides the default Entry on Android to set the control background color to transparent.

Here is documentation for creating custom renderers for Entry.

**Note: I haven't personally tested it, but multiple people commented that it works.

Shape drawable as background, a line at the bottom

In general, I try to mess as little as possible with backgrounds unless absolutely necessary, since doing so overrides the default background colors that have states for focused, pressed, etc. I suggest just using an additional view (in a vertical LinearLayout) that is as thick as you need it to be. For example:

 <View 
       android:background="#FF000000" 
       android:layout_height="2dp" 
       android:layout_width="fill_parent"/>

---

Related Topics