Validator

Get easy error validation by swapping out TextInputLayout with ValidatingTextInputLayout:

<com.johnpetitto.validator.ValidatingTextInputLayout
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   app:errorLabel="@string/some_error">

   <EditText
       android:layout_width="match_parent"
       android:layout_height="wrap_content" />

</com.johnpetitto.validator.ValidatingTextInputLayout>

Then set a Validator on your ValidatingTextInputLayout:

layout.setValidator(new Validator() {
   @Override
   public boolean isValid(String input) {
       return input.startsWith("J");
   }
});

To validate, simply call validate() on the ValidatingTextInputLayout.

Validators provides a handful of predefined validators, including email and phone validation, which you can set with the app:validator tag. It also contains a helpful function for validating multiple ValidatingTextInputLayout objects at once.

For a more comprehensive introduction, refer to this blog post.

Download

compile 'com.johnpetitto.validator:validator:1.0.2'

License

Copyright 2017 John Petitto

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.