Implementation of a TextView and all its direct/indirect subclasses with native support for the Roboto fonts, includes the brand new Roboto Slab and Roboto Mono fonts.

Supported fonts:

• Roboto
• Roboto Condensed
• Roboto Slab
• Roboto Mono

This project is deprecated in favor of the native implementation introduced in Android O.

This library is compatible from API 14 (Android 4.0).

Gradle:

compile 'com.github.johnkil.android-robototextview:robototextview:4.0.0'

Maven:

<dependency>
    <groupId>com.github.johnkil.android-robototextview</groupId>
    <artifactId>robototextview</artifactId>
    <version>4.0.0</version>
    <type>aar</type>
</dependency>

To set up a typeface you must specify the parameter robotoTypeface:

<com.devspark.robototextview.widget.RobotoTextView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:robotoTypeface="roboto_light_italic"/>

or specify a set of parameters robotoFontFamily, robotoTextWeight and robotoTextStyle:

<com.devspark.robototextview.widget.RobotoTextView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:robotoFontFamily="roboto"
    app:robotoTextWeight="light"
    app:robotoTextStyle="italic"/>

Set up typeface in code:

Using parameter typeface:

RobotoTextView textView = new RobotoTextView(context);
RobotoTypefaces.setUpTypeface(
        textView, 
        RobotoTypefaces.TYPEFACE_ROBOTO_LIGHT_ITALIC);

Using parameters fontFamily, textWeight and textStyle:

RobotoTextView textView = new RobotoTextView(context);
RobotoTypefaces.setUpTypeface(
        textView, 
        RobotoTypefaces.FONT_FAMILY_ROBOTO,
        RobotoTypefaces.TEXT_WEIGHT_LIGHT,
        RobotoTypefaces.TEXT_STYLE_ITALIC);

Using parameter typeface:

RobotoTypefaceSpan span = new RobotoTypefaceSpan(
        context, 
        RobotoTypefaces.TYPEFACE_ROBOTO_LIGHT_ITALIC);
Spannable spannable = new SpannableString("text");
spannable.setSpan(span, 0, 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

Using parameters fontFamily, textWeight and textStyle:

RobotoTypefaceSpan span = new RobotoTypefaceSpan(
        context,
        RobotoTypefaces.FONT_FAMILY_ROBOTO,
        RobotoTypefaces.TEXT_WEIGHT_LIGHT,
        RobotoTypefaces.TEXT_STYLE_ITALIC);
Spannable spannable = new SpannableString("text");
spannable.setSpan(span, 0, 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

To apply roboto typeface for original TextView (like a Calligraphy) you must attach inflater in your Activity class in the #onCreate() method.

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    RobotoInflater.attach(this);
    super.onCreate(savedInstanceState);
}

and specify the typeface in xml:

<TextView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:robotoTypeface="roboto_light_italic"
    tools:ignore="MissingPrefix"/>

Note: Popular IDE's (Android Studio, IntelliJ) will likely mark this as an error despite being correct. You may want to add tools:ignore="MissingPrefix" to either the View itself or its parent ViewGroup to avoid this. You'll need to add the tools namespace to have access to this "ignore" attribute. xmlns:tools=" http://schemas.android.com/tools". See https://code.google.com/p/android/issues/detail?id=65176.

If you intend to use is not all fonts, the extra fonts can be removed.

android.applicationVariants.all{ variant ->
    variant.mergeAssets.doLast {
        File fonts = file("$variant.mergeAssets.outputDir/fonts")
        if (fonts.exists()) {
            for (File file : fonts.listFiles()) {
                if (file.getName().contains("RobotoSlab")) {
                    println("delete " + file.getName() + " font")
                    file.delete()
                }
            }
        }
    }
}

Copyright 2014 Evgeny Shishkin

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.