EditTextValidator

EditTextValidator is a library for Android which helps in input validation using regular expressions.

Features

• Easy to use
• Input validation using regular expressions
• Has basic predefined regular expressions for form validation
• Can be used to compare one Edittext with another
• Has high flexibility allowing the use of custom ui components as backgrounds or drawables
• Has Timeout feature which waits till the desired time before validation
• Provides automatic input validation

Prerequisites

1. The library makes use of Java8. Add the following to your app build.gradle if not present.

   android{
   compileOptions{
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
   }

2. The library is built on AndroidX. So, for successful compilation migrate to AndroidX. Steps of migration :-
   • Click on Refactor on the menubar
   • At the bottom part of the Refactor menu click on Migrate to AndriodX

Adding dependency

1. Add this in your root build.gradle

   allprojects {
    repositories {
        maven { url 'https://jitpack.io' }
    }
   }

2. Add the dependency to your app build.gradle

   dependencies{
    implementation 'com.github.Gauravd701.0.2'
   }

Additional Attributes of ValidatorEditText

1. app:checkType=”” - Used to define the type of validation. By default is alpha.

   <com.gd70.android.validator.ValidatorEditText
                .
                .
                app:checkType="email"></com.gd70.android.validator.ValidatorEditText>

2. app:validBackground=”” - Background drawable to be used if input is valid

   <com.gd70.android.validator.ValidatorEditText
                .
                .
                app:validBackground="@drawable/validBackgroundDrawable"></com.gd70.android.validator.ValidatorEditText>

3. app:invalidBackground=”” - Background drawable to be used if input is invalid

   <com.gd70.android.validator.ValidatorEditText
                .
                .
                app:invalidBackground="@drawable/invalidBackgroundDrawable"></com.gd70.android.validator.ValidatorEditText>

4. app:validDrawable=”” - Drawable to be used if input is valid (This is shown inside the EditText)

   <com.gd70.android.validator.ValidatorEditText
                .
                .
                app:validDrawable="@drawable/validDrawable"></com.gd70.android.validator.ValidatorEditText>

5. app:invalidDrawable=”” - Drawable to be used if input is invalid (This is shown inside the EditText)

   <com.gd70.android.validator.ValidatorEditText
                .
                .
                app:invalidDrawable="@drawable/invalidDrawable"></com.gd70.android.validator.ValidatorEditText>

6. app:drawablePosition=”” - Location of the drawable inside the edittext. By default is Right(end) of the edittext

   <com.gd70.android.validator.ValidatorEditText
                .
                .
                app:drawablePosition="left"></com.gd70.android.validator.ValidatorEditText>

7. app:useRegex=”” - provide a custom regex to be used for validation

   <com.gd70.android.validator.ValidatorEditText
                .
                .
                app:useRegex="[0-9]+"></com.gd70.android.validator.ValidatorEditText>

8. app:timeOut=”” - wait time(in milliseconds) before validation is started. By default is 500ms

   <com.gd70.android.validator.ValidatorEditText
                .
                .
                app:timeOut="1000"></com.gd70.android.validator.ValidatorEditText>

9. app:compareTo=”” - used to compare one edittext with another

   <com.gd70.android.validator.ValidatorEditText
                .
                .
                app:compareTo="@id/password"></com.gd70.android.validator.ValidatorEditText>

10. app:required=”” - mark a field as required

    <com.gd70.android.validator.ValidatorEditText
                .
                .
                app:required="true"></com.gd70.android.validator.ValidatorEditText>

11. To check for the validity on form submission you can use the following function

    ValidatorEditText validatorEditText=findViewById(R.id.validatorText);
    if(validatorEditText.isValid()){
    //valid
    }
    else{
    //invalid
    }

How to use

1. Use ValidatorEditText instead of EditText

   <com.gd70.android.validator.ValidatorEditText
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:layout_constraintTop_toTopOf="parent"
                android:textSize="20sp"
                android:padding="10sp"
                android:hint="@string/username"
                ></com.gd70.android.validator.ValidatorEditText>

2. Define the validation type using checkType attribute or provide your own regular expression to the useRegex attribute