How to use Font Awesome icon in android application?

You can follow this answer.

First Download the fontawesome.ttf from here. And put the file in asset/fontawesome.ttf.

Then Make a FontAwesome class which actually represents the textview of FontAwesome like this way.

public class FontAwesome extends TextView {


    public FontAwesome(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init();
    }

    public FontAwesome(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public FontAwesome(Context context) {
        super(context);
        init();
    }

    private void init() {
    
    //Font name should not contain "/".
        Typeface tf = Typeface.createFromAsset(getContext().getAssets(),
                "fontawesome.ttf");
        setTypeface(tf);
    }
    
}

now you can use the Fontawesome class as your need and also follow the cheatsheet. to get your icon’s Unicode.

So, your TextView will be like this.

<PACKAGE_NAME.FontAwesome 
    android:id="@+id/userLogin"
    android:text="&#xf007;  Login Now"
    android:clickable="true"
    android:onClick="login"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />