CODEWITHSUNDEEP
androidlayoutbackgroundborder
Skip
Skip

Reputation: 6531

Rectangle shape as background causes black background

I would like to create a border around my RableRow. I am using the following shape as background.

bg_stroke_dotted_right

    <?xml version="1.0" encoding="utf-8"?>
    <layer-list  xmlns:android="http://schemas.android.com/apk/res/android">
        <item
            android:top="-4dp"
            android:left="-2dp"
            android:bottom="-4dp" 

            android:drawable="@drawable/stroke_dotted">
        </item>
    </layer-list>

stroked_dotted drawable

    <?xml version="1.0" encoding="utf-8"?>
    <shape xmlns:android="http://schemas.android.com/apk/res/android" >
        <solid android:color="#000000" />
        <stroke
            android:dashGap="4dp"
            android:dashWidth="2dp"
            android:width="2dp"
            android:color="@color/greyDark" />

    </shape>

I do not understand why using "bg_stroke_dotted_right" as bg - files the background with black color. As soon as I add "bg_stroke_dotted_right" as bg - the bg turns to black.

        <TableRow
            android:id="@+id/tableRow2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/bg_stroke_dotted_right"
            >

enter image description here

Upvotes: 5

Views: 3091

Answers (2)

pablisco
pablisco

Reputation: 14237

The accepted answer suggests to use transparent in the solid element. Where as this is the reason for the bug (missing the solid element falls back to black on android <4.2) the solution is not the most optimal.

For starters instead of hard code the colour you can use @android:color/transparent however it's potentially best to use @null so that it doesn't overdraw. Something like this:

<solid android:color="@null" />

Upvotes: 9

user3574454
user3574454

Reputation: 124

in the shape try this :

<solid android:color="#00000000" />

in this case the first 2 "00" are the alpha of the colors, and "00" meand transparent.

enjoy!

Upvotes: 10

Related Questions