✔UI form validation library for Android

Yet another UI form validation library for Android. It is highly customizable and easy to use. This library will works with TextView, EditText, AppCompatEditText, TextInputEditText, TextInputLayout and CheckBox. This library is designed in such a way that Its easy to add support for new widgets and add new rules.

💻Usage

1. Gradle dependency:

   implementation 'com.github.dhaval2404:android-form-validation:1.0'

2. The android-form-validation configuration is created using the builder pattern.

   private fun isValidForm(): Boolean {
       return FormValidator.getInstance()
           .addField(firstNameEt, NonEmptyRule(R.string.error_empty_first_name))
           .addField(lastNameEt, NonEmptyRule(R.string.error_empty_last_name))
           .addField(
               emailEtLyt,
               NonEmptyRule("Please enter Email"),
               EmailRule(R.string.error_invalid_email)
           )
           .addField(
               passwordEtLyt,
               NonEmptyRule("Please enter Password"),
               PasswordRule("Please provide strong Password")
           )
           .addField(
               confirmPasswordEtLyt,
               NonEmptyRule("Please enter Password"),
               EqualRule(
                   confirmPasswordEt.text.toString(),
                   "Password and Confirm password must match"
               )
           )
           .addField(
               phoneNumberEt,
               NonEmptyRule("Please enter Phone Number"),
               LengthRule(10, "Please enter valid Phone Number")
           )
           .addField(
               termsOfUseCB,
               CheckedRule("Accept terms of use")
           )
           .setErrorListener {
               // Require only for CheckBox with Toast or Custom View Only
               for (error in it) {
                   if (error.view is CheckBox) {
                       (error.view as CheckBox).error = null
                       Toast.makeText(applicationContext, error.error, Toast.LENGTH_SHORT).show()
                   }
                   Log.e("Error", error.toString())
               }
           }
           .validate()
   }

📐Supported Rules:

• CheckedRule(Used with CheckBox only)

  addField(termsOfUseCheckbox, CheckedRule("Accept terms of use"))

• EmailRule

  addField(emailEditText, EmailRule("Please enter valid Email"))

• EqualRule

  // Combile 2 rules for Confirm Password Validation
  // Check if Password is valid and Password match with Confirm Password
  addField(confirmPasswordEditText,
    PasswordRule(PasswordPattern.ALPHA_NUMERIC, "Please provide strong Password"),
    EqualRule(passwordEditText.text.toString(), "Password not matching")
  )

  // Combile 2 rules for Confirm Email Validation
  // Check if Email is valid and Email match with Confirm Email
  addField(emailEditText,
    EmailRule("Please enter valid Email"),
    EqualRule(confirmEmailEditText.text.toString(), "Email not matching")
  )

• LengthRule

  addField(phoneNumberEditText, LengthRule(10, "Please enter valid Phone Number"))

• MaxLengthRule

  addField(messageEditText, MaxLengthRule(50, "Message should be less than 50 character long"))

• MinLengthRule

  addField(messageEditText, MinLengthRule(10, "Please enter message with at least 10 character"))

  // Check if Phone Number Length is between 10-13
  addField(phoneNumberEditText,
     MinLengthRule(10, "Please enter valid Phone Number"),
     MaxLengthRule(13, "Please enter valid Phone Number"))

• NumberRule

  addField(priceEditText, NumberRule("Please enter valid Price"))

• NonEmptyRule

  addField(firstNameEditText, NonEmptyRule("Please enter First Name"))

• PasswordRule

  // Password can have any characters
  addField(passwordEditText, PasswordRule("Please enter Password"))

  // Password should have alphabets and numeric character both
  addField(passwordEditText, PasswordRule(PasswordPattern.ALPHA_NUMERIC, "Please provide strong Password"))

• RegexRule

  addField(usernameEditText, RegexRule(RegexRule.USERNAME_PATTERN, "Please enter valid Username"))

  addField(usernameEditText, RegexRule("^[a-zA-Z0-9_-]{3,16}",  "Please enter valid Username"))

💥Compatibility

• Library - Android Kitkat 4.4+ (API 19)
• Sample - Android Kitkat 4.4+ (API 19)

✔️Changelog

Version: 1.0

• Initial Build

Let us know!

We'll be really happy if you sent us links to your projects where you use our library. Just send an email to dhavalpatel244@gmail.com And do let us know if you have any questions or suggestion regarding the library.

License

Copyright 2020, Dhaval Patel

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.