Android programmatically change background of Button

Question

I fail changing the background of my button in my activity. It is a basic button which a shape as a background.

In my main.xml it looks like this in my RelativeLayout:

<Button
    android:id="@+id/mybtn"
    android:background = "@drawable/rounded_button"
    android:elevation="0dp" />

In my MainActivity I try to change the button like this:

    Button btn = findViewById(R.id.mybtn);
    btn.setBackgroundColor(Color.RED);

But it says:

cannot resolve method setBackgroundColor

Answer 1

Try this:

Button b = ...;
int color = ...;
...
CompoundButtonCompat.setButtonTintList(button, ColorStateList.valueOf(color));

Compat libraries checks compatibility and remove most of issues that come with android fragmentation.

You can try to set background by calling compatibility library with set background color method, but I prefer and probably a common usage is to call tint methods on a components that comes from appcompat and a material design library.

Hope this helps.

BR

Answer 2

You have to change the background of your drawable I guess

Drawable mDrawable = AppCompatResources.getDrawable(context, R.drawable. rounded_button); 
Drawable wrappedDrawable = DrawableCompat.wrap(mDrawable);
DrawableCompat.setTint(wrappedDrawable, Color.RED);   

Answer 3

You have to change the setBackgroundColor to setBackground.

Button btn = findViewById(R.id.mybtn); btn.setBackground(Color.RED);

Answer 4

You have to change the setBackgroundColor to setBackground.

Button button= findViewById(R.id.mybtn);

Try this below code

button.setBackgroundResource(ContextCompat.getColor(MainActivity,this,R.color.red));

Answer 5

you can try this

button.setBackgroundDrawable(ContextCompat.getDrawable(context , active ? R.drawable.gray_schedule_button : R.drawable.curved_button_shape ));