Change Button Background At Runtime in Android

change button background at runtime in android

I actually found a solution

You can save the initial background of your button in a Drawable object

Drawable d = button.getBackground();

Now you can modify your button's background as you wish

button.setBackgroundResource(R.drawable.custom_button);

Than you can modify it back

button.setBackgroundDrawable(d);

How to change a button shape style at runtime?

It is not exactly what you are looking for.

However using the MaterialButton component it is very simple to have rounded buttons.

Just use app:cornerRadius to define the corner radius and app:backgroundTint to change the background color.

<com.google.android.material.button.MaterialButton
    app:backgroundTint="@color/myselector"
    app:cornerRadius="xxdp"
    .../>

You can programmatically change these values using:

button.setCornerRadius(...);
button.setBackgroundTintList(..);

Android button background color

If you want to keep the general styling (rounded corners etc.) and just change the background color then I use the backgroundTint property

android:backgroundTint="@android:color/holo_green_light"

android set button background programmatically

R.color.red is an ID (which is also an int), but is not a color.

Use one of the following instead:

// If you're in an activity:
Button11.setBackgroundColor(getResources().getColor(R.color.red));
// OR, if you're not: 
Button11.setBackgroundColor(Button11.getContext().getResources().getColor(R.color.red));

Or, alternatively:

Button11.setBackgroundColor(Color.RED); // From android.graphics.Color

Or, for more pro skills:

Button11.setBackgroundColor(0xFFFF0000); // 0xAARRGGBB

Android Button background color not changing

I think you need to change your attribute from "theme" to "style". These files are intended for different things, so are used differently.

Style is used to assign attributes to individual views or components, and Theme is used to apply attributes to the entire app.

So try this instead:

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/btnLogin"
    android:id="@+id/btn_login"
    android:layout_alignParentBottom="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    <!-- This attribute was changed -->        
    android:style="@style/ButtonStlye123"
    android:onClick="login" />

You should also split these different types of XML into the correct files as appropriate (styles.xml and themes.xml - instead of keeping them all in the same file). This is convention, and won't effect the code compilation or execution, but is recommended as a code style.

Android : change button text and background color

Here is an example of a drawable that will be white by default, black when pressed:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true">
        <shape>
            <solid
                android:color="#1E669B"/>
            <stroke
                android:width="2dp"
                android:color="#1B5E91"/>
            <corners
                android:radius="6dp"/>
            <padding
                android:bottom="10dp"
                android:left="10dp"
                android:right="10dp"
                android:top="10dp"/>
        </shape>

    </item>
    <item>
        <shape>
            <gradient
                android:angle="270"
                android:endColor="#1E669B"
                android:startColor="#1E669B"/>
            <stroke
                android:width="4dp"
                android:color="#1B5E91"/>
            <corners
                android:radius="7dp"/>
            <padding
                android:bottom="10dp"
                android:left="10dp"
                android:right="10dp"
                android:top="10dp"/>
        </shape>
    </item>
</selector>

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