How to customize firebase-ui-auth for Android

Readme.md

Instructions

This is a snippet to customize Firebase-Ui-auth login. Thanks to the wonderfull people in Firebase-Ui.

1. Download and add to your project this files

• bg_login
• logo

2. Use the colors provided in colors.xml
3. Copy paste the themes in the styles.xml
4. Apply the theme and the logo in the java as the example in LoginActivity.java

This are the size of the background in pixels, so you can create your own:

• mdpi: 360 x 640
• hpdi: 540 x 960
• xhdpi: 720 x 1280
• xxhdpi: 1080 x 1920
• xxxhdpi: 1440 x 2560

I'm still working in a solution to support correctly other devices like tablets, my first thought contemplate using the dimens still not sure if it is gonna be a dirty but quick fix

colors.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#673AB7</color>
    <color name="colorPrimaryDark">#512DA8</color>
    <color name="colorPrimaryLight">#EDE7F6</color>
    <color name="colorAccent">#7C4DFF</color>
    <color name="colorSecondary">#FFC107</color>
</resources>

LoginActivity.java

public class LoginActivity extends AppCompatActivity {

    private static final int RC_SIGN_IN = 343;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        
        //I rather using a list, this way handling providers is separeted from the login methods
        List<AuthUI.IdpConfig> providers = Arrays.asList(
                new AuthUI.IdpConfig.EmailBuilder().build(),
                new AuthUI.IdpConfig.GoogleBuilder().build(),
                new AuthUI.IdpConfig.FacebookBuilder().build()
        );
        startActivityForResult(
                AuthUI.getInstance()
                        .createSignInIntentBuilder()
                        .setAvailableProviders(providers)                        
                        .setTheme(R.style.LoginTheme)
                        .setLogo(R.mipmap.logo)
                        .build(),
                RC_SIGN_IN);
    }
}

styles.xml

<resources>
    <style name="LoginTheme" parent="FirebaseUI">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
        <item name="colorButtonNormal">@color/colorAccent</item>
        <item name="colorControlNormal">@android:color/white</item>
        <item name="colorControlActivated">@android:color/white</item>
        <item name="colorControlHighlight">@android:color/white</item>
        <item name="android:textColor">@android:color/white</item>
        <item name="android:textColorPrimary">@android:color/white</item>
        <item name="android:textColorSecondary">@android:color/white</item>
        <item name="android:windowBackground">@mipmap/bg_login</item>
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
        <item name="android:textColorHint">@android:color/white</item>
    </style>

    <style name="FirebaseUI.Text">
        <item name="android:layout_width">match_parent</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:fontFamily">sans-serif</item>
        <item name="android:textColor">@android:color/white</item>
    </style>

    <style name="FirebaseUI.Text.Link">
        <item name="android:textColor">@color/colorSecondary</item>
    </style>

</resources>