• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Tim Cooke
  • paul wheaton
  • Jeanne Boyarsky
  • Ron McLeod
Sheriffs:
  • Paul Clapham
  • Liutauras Vilda
  • Devaka Cooray
Saloon Keepers:
  • Tim Holloway
  • Roland Mueller
Bartenders:

how to set layout background from xml

 
Ranch Hand
Posts: 107
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
hi i have tried a number of ways and from java setting if as drawable but they background never alters i have also tried altering color but it still remains white if anyone could point me in the right direction


 
 
Greenhorn
Posts: 4
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
To set the background of a `LinearLayout` or any other view from XML in Android, make sure you're following these steps:

1. Check Drawable Resource
Ensure that `@drawable/faderback` is a valid drawable resource. If it's an image, make sure it's placed in the `res/drawable` directory. If it's a color, it should be defined in `res/color` or `res/values/colors.xml`.

2. XML Layout Example
Your XML layout code looks mostly correct. Here’s a cleaned-up version to ensure it’s set correctly:

```xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:id="@+id/butback"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:background="@drawable/faderback"
   android:orientation="horizontal"> <!-- Added orientation to make sure it lays out as intended -->

   <ImageButton
       android:id="@+id/revoff"
       android:layout_width="0dp"
       android:layout_height="wrap_content"
       android:layout_weight="1"
       android:background="@drawable/off"
       android:text="off"/>

   <ImageButton
       android:id="@+id/smroom"
       android:layout_width="0dp"
       android:layout_height="wrap_content"
       android:layout_weight="1"
       android:background="@drawable/smroom"
       android:text="Small room"/>

   <ImageButton
       android:id="@+id/largeroom"
       android:layout_width="0dp"
       android:layout_height="wrap_content"
       android:layout_weight="1"
       android:background="@drawable/largeroom"
       android:text="Large room"/>

   <ImageButton
       android:id="@+id/midhall"
       android:layout_width="0dp"
       android:layout_height="wrap_content"
       android:layout_weight="1"
       android:background="@drawable/medhall"
       android:text="Small hall"/>

   <ImageButton
       android:id="@+id/largehall"
       android:layout_width="0dp"
       android:layout_height="wrap_content"
       android:layout_weight="1"
       android:background="@drawable/largehall"
       android:text="Mid hall"/>

   <ImageButton
       android:id="@+id/plate"
       android:layout_width="0dp"
       android:layout_height="wrap_content"
       android:layout_weight="1"
       android:background="@drawable/plate"
       android:text="Plate"/>
</LinearLayout>
```

3. Verify Drawable Resource

- Drawable File:Ensure that `faderback` is indeed a drawable resource. If it’s an image or XML file, make sure it's correctly defined and placed in the `res/drawable` folder.
- Drawable Type: If you are using a color, you should use `@color` instead of `@drawable`. For example: `android:background="@color/your_color"`.

4. Check for Overriding Styles

Ensure that there are no styles or themes that might override the background settings for this layout.

5. Clean and Rebuild

Sometimes, simply cleaning and rebuilding your project can resolve issues. In Android Studio:
- Go to `Build` -> `Clean Project`
- Then, `Build` -> `Rebuild Project`

6. Check in Java/Kotlin Code

If you’re setting the background programmatically and it’s not reflecting, ensure there are no conflicting code snippets overriding the XML settings. For instance, check if there are any calls to `setBackgroundColor()` or `setBackgroundResource()` in your activity or fragment code.

If you follow these steps and verify the drawable resource, you should be able to set the background successfully. If you still encounter issues, double-check the drawable and XML file for any errors or inconsistencies.
 
No more fooling around. Read this tiny ad:
Smokeless wood heat with a rocket mass heater
https://woodheat.net
reply
    Bookmark Topic Watch Topic
  • New Topic