'How set background drawable programmatically in Android

To set Background:

RelativeLayout layout =(RelativeLayout)findViewById(R.id.background);
layout.setBackgroundResource(R.drawable.ready);

Is the best way to do it?

javaandroidbackgrounddrawable


Solution 1:[1]

Try this:

layout.setBackground(ContextCompat.getDrawable(context, R.drawable.ready));

and for API 16<:

layout.setBackgroundDrawable(ContextCompat.getDrawable(context, R.drawable.ready));

Solution 2:[2]

RelativeLayout relativeLayout;  //declare this globally

now, inside any function like onCreate, onResume

relativeLayout = new RelativeLayout(this);  
relativeLayout.setBackgroundResource(R.drawable.view); //or whatever your image is
setContentView(relativeLayout); //you might be forgetting this

Solution 3:[3]

I'm using a minSdkVersion 16 and targetSdkVersion 23.
The following is working for me, it uses 

ContextCompat.getDrawable(context, R.drawable.drawable);

Instead of using: 

layout.setBackgroundResource(R.drawable.ready);

Rather use:

layout.setBackground(ContextCompat.getDrawable(this, R.drawable.ready));

getActivity() is used in a fragment, if calling from a activity use this.

Solution 4:[4]

You can also set the background of any Image:

View v;
Drawable image=(Drawable)getResources().getDrawable(R.drawable.img);
(ImageView)v.setBackground(image);

Solution 5:[5]

If you use AndroidX, you should use:

AppCompatResources.getDrawable(context, R.drawable.your_drawable)

Previous methods listed are deprecated.

Solution 6:[6]

If your backgrounds are in the drawable folder right now try moving the images from drawable to drawable-nodpi folder in your project. This worked for me, seems that else the images are rescaled by them self..

Solution 7:[7]

Use butterknife to bind the drawable resource to a variable by adding this to the top of your class (before any methods).

@Bind(R.id.some_layout)
RelativeLayout layout;
@BindDrawable(R.drawable.some_drawable)
Drawable background;

then inside one of your methods add

layout.setBackground(background);

That's all you need

Solution 8:[8]

if (android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN)
     layout.setBackgroundDrawable(getResources().getDrawable(R.drawable.ready));
else if(android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP_MR1)
     layout.setBackground(getResources().getDrawable(R.drawable.ready));
else
     layout.setBackground(ContextCompat.getDrawable(this, R.drawable.ready));

Solution 9:[9]

try this.

 int res = getResources().getIdentifier("you_image", "drawable", "com.my.package");
 preview = (ImageView) findViewById(R.id.preview);
 preview.setBackgroundResource(res);

Solution 10:[10]

Give a try to ViewCompat.setBackground(yourView, drawableBackground)

Solution 11:[11]

setBackground(getContext().getResources().getDrawable(R.drawable.green_rounded_frame));

Solution 12:[12]

Try this code:

Drawable thumb = ContextCompat.getDrawable(getActivity(), R.mipmap.cir_32);
mSeekBar.setThumb(thumb);

Solution 13:[13]

I have 4 fragment for splashscreen. i can change background by change fragment by this code

screen_main=(ConstraintLayout)view.findViewById(R.id.screen_main);
    screen_main.setBackground(getContext().getResources().getDrawable(R.color.bg_screen1));

Solution 14:[14]

Inside the app/res/your_xml_layout_file.xml

  1. Assign a name to your parent layout.
  2. Go to your MainActivity and find your RelativeLayout by calling the findViewById(R.id."given_name").
  3. Use the layout as a classic Object, by calling the method setBackgroundColor().

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