If you want to change the background of fab, use app:backgroundTint attribute to define your own background color You can define the size of the button by using app:fabSize attributeīy default, fab takes colorAccent as background color. For example:īutton button = (Button) findViewById(R.id.button_send) ītOnClickListener(new View.You can position the floating button by using layout_gravity attribute.įAB supports two sizes normal and mini. To declare the event handler programmatically, create an View.OnClickListener object and assign it to the button by calling setOnClickListener(View.OnClickListener). Might be necessary if you instantiate the Button at runtime or you need toĭeclare the click behavior in a Fragment subclass. You can also declare the click event handler programmatically rather than in an XML layout. Define a View as its only parameter (this will be the View that was clicked).The method you declare in the android:onClick attribute must haveĪ signature exactly as shown above. Do something in response to button click ** Called when the user touches the button */ Within the Activity that hosts this layout, the following method handles The Activity hosting the layout must then implement theįor example, here's a layout with a button using android:onClick:

The value for this attribute must be the name of the method you want to call in response To define the click event handler for a button, add the android:onClick attribute to the element in your XML When the user clicks a button, the Button object receives

With text and an icon, using the Button class with the android:drawableLeft attribute:.

With an icon, using the ImageButton class:.A button consists of text or an icon (or both text and an icon) that communicates what actionĭepending on whether you want a button with text, an icon, or both, you can create the

Android studio theme borderless