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Theming the FloatingActionButton (FAB) primarily involves changing its background color, ripple color, and icon. Here's a step-by-step guide to theme a FloatingActionButton in Android:
Declare your FloatingActionButton in your XML layout:
activity_main.xml:
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:contentDescription="@string/fab_desc"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:srcCompat="@android:drawable/ic_dialog_email" />
</androidx.constraintlayout.widget.ConstraintLayout>
You can theme the FAB directly in XML:
<com.google.android.material.floatingactionbutton.FloatingActionButton
...
app:backgroundTint="@color/yourColor"
app:rippleColor="@color/yourRippleColor"
app:tint="@color/yourIconColor"
/>
Replace yourColor, yourRippleColor, and yourIconColor with your desired colors.
Alternatively, you can also theme the FAB programmatically:
MainActivity.java:
import android.graphics.Color;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FloatingActionButton fab = findViewById(R.id.fab);
// Set background color
fab.setBackgroundTintList(ColorStateList.valueOf(Color.BLUE));
// Set ripple color
fab.setRippleColor(Color.RED);
// Set icon color
fab.setImageTintList(ColorStateList.valueOf(Color.WHITE));
}
}
Don't forget to import android.content.res.ColorStateList.
To use the FloatingActionButton, ensure you have the Material Components library in your build.gradle:
implementation 'com.google.android.material:material:<version>'
Replace <version> with the appropriate library version. Always ensure you're using the latest stable version.
Finally, to leverage Material Components fully, make sure your app's theme inherits from a Material Components theme (e.g., Theme.MaterialComponents.Light.DarkActionBar).
Customizing Floating Action Button appearance in Android:
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_add"
app:backgroundTint="@color/colorAccent"
app:borderWidth="0dp"
app:elevation="6dp"
app:fabSize="normal"
app:rippleColor="@color/colorAccentDark"
app:layout_anchor="@id/bottomAppBar"
app:layout_anchorGravity="bottom|end" />
Changing color and style of Floating Action Button in Android:
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_add"
app:backgroundTint="@color/customFabColor"
app:borderWidth="2dp"
app:elevation="8dp"
app:fabSize="mini"
app:rippleColor="@color/customFabRippleColor"
app:layout_anchor="@id/bottomAppBar"
app:layout_anchorGravity="bottom|end" />
Material Design theming for Floating Action Button Android:
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
style="@style/Widget.MaterialComponents.FloatingActionButton"
... />
Using styles and themes with FloatingActionButton in Android:
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
style="@style/MyFloatingActionButton"
... />
<!-- styles.xml -->
<style name="MyFloatingActionButton" parent="Widget.MaterialComponents.FloatingActionButton">
<item name="backgroundTint">@color/customFabColor</item>
<item name="borderWidth">2dp</item>
<!-- Add other style attributes as needed -->
</style>
Adding icon and text to Floating Action Button with theming:
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_add"
app:backgroundTint="@color/colorAccent"
app:borderWidth="0dp"
app:elevation="6dp"
app:fabSize="normal"
app:rippleColor="@color/colorAccentDark"
app:layout_anchor="@id/bottomAppBar"
app:layout_anchorGravity="bottom|end"
app:labelText="Add" />
Floating Action Button animations and theming in Android:
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
style="@style/Widget.MaterialComponents.FloatingActionButton.Extended"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_add"
android:contentDescription="@string/add"
android:text="@string/add"
app:backgroundTint="@color/colorAccent"
app:rippleColor="@color/colorAccentDark"
app:layout_anchor="@id/bottomAppBar"
app:layout_anchorGravity="bottom|end" />
Themed Floating Action Button with CoordinatorLayout in Android:
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
style="@style/Widget.MaterialComponents.FloatingActionButton"
... />
<!-- Add other layout elements as needed -->
</androidx.coordinatorlayout.widget.CoordinatorLayout>
Applying custom colors to FloatingActionButton Android:
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_add"
app:backgroundTint="@color/customFabBackground"
app:rippleColor="@color/customFabRippleColor"
... />
Floating Action Button theming in XML layout in Android:
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
style="@style/Widget.MaterialComponents.FloatingActionButton"
... />
Changing size and elevation of FloatingActionButton with theming:
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
android:layout_width="56dp"
android:layout_height="56dp"
android:src="@drawable/ic_add"
app:elevation="12dp"
... />
Floating Action Button states and theming in Android:
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
style="@style/Widget.MaterialComponents.FloatingActionButton"
app:backgroundTint="@color/customFabColorStateList"
... />
Custom drawable for FloatingActionButton in Android theming:
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="@drawable/custom_fab_icon"
... />
Creating themed Floating Action Button with Kotlin in Android:
val fab: FloatingActionButton = findViewById(R.id.fab) fab.backgroundTintList = ColorStateList.valueOf(ContextCompat.getColor(this, R.color.customFabColor)) fab.setImageResource(R.drawable.ic_add)