Android Saripaar v2

சரிபார் - sari-paar (Tamil for "to check", "verify" or "validate")

Android Saripaar is a simple, feature-rich and powerful rule-based UI form validation library for Android. It is the SIMPLEST UI validation library available for Android.

Why Android Saripaar?

Built on top of Apache Commons Validator, a validation framework with proven track record on the web, desktop and mobile platforms.
Declarative style validation using Annotations.
Extensible, now allows Custom Annotations.
Synchronous and Asynchronous validations, you don't have to worry about threading.
Supports both BURST and IMMEDIATE modes.
Works with Stock Android Widgets, no custom view dependencies.
Isolates validation logic using rules.
Compatible with other annotation-based libraries and frameworks such as ButterKnife, AndroidAnnotations, RoboGuice, etc.,

Quick Start

Step 1 - Annotate your widgets using Saripaar Annotations

@NotEmpty
@Email
private EditText emailEditText;

@Password(min = 6, scheme = Password.Scheme.ALPHA_NUMERIC_MIXED_CASE_SYMBOLS)
private EditText passwordEditText;

@ConfirmPassword
private EditText confirmPasswordEditText;

@Checked(message = "You must agree to the terms.")
private CheckBox iAgreeCheckBox;

The annotations are self-explanatory. The @Order annotation is required ONLY when performing ordered validations using Validator.validateTill(View) and Validator.validateBefore(View) or in IMMEDIATE mode.

Step 2 - Instantiate a new Validator

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // Code…

    validator = new Validator(this);
    validator.setValidationListener(this);

    // More code…
}

You will need a Validator and a ValidationListener for receiving callbacks on validation events.

Step 3 - Implement a ValidationListener

public class RegistrationActivity extends Activity implements ValidationListener {

    // Code…

    @Override
    public void onValidationSucceeded() {
        Toast.makeText(this, "Yay! we got it right!", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onValidationFailed(List<ValidationError> errors) {
        for (ValidationError error : errors) {
            View view = error.getView();
            String message = error.getCollatedErrorMessage(this);

            // Display error messages ;)
            if (view instanceof EditText) {
                ((EditText) view).setError(message);
            } else {
                Toast.makeText(this, message, Toast.LENGTH_LONG).show();
            }
        }
    }
}

onValidationSucceeded() - Called when all your views pass all validations.
onValidationFailed(List<ValidationError> errors) - Called when there are validation error(s).

Step 4 - Validate

registerButton.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {
        validator.validate();
    }
});

The Validator.validate() call runs the validations and returns the result via appropriate callbacks on the ValidationListener. You can run validations on a background AsyncTask by calling the Validator.validate(true) method.

Saripaar X

If you are looking for country-specific annotations, checkout the Saripaar X project. The extensions project is in its early stages and needs contributors. Feel free to contribute.

Maven

<dependency>
    <groupId>com.mobsandgeeks</groupId>
    <artifactId>android-saripaar</artifactId>
    <version>(latest version)</version>
</dependency>

Gradle

dependencies {
    compile 'com.mobsandgeeks:android-saripaar:(latest version)'
}

Snapshots

In your {project_base}/build.gradle file, include the following.

allprojects {
    repositories {
        jcenter()
        maven {
            url "https://oss.sonatype.org/content/repositories/snapshots/"
        }
    }
}

ProGuard

Exclude Saripaar classes from obfuscation and minification. Add the following rules to your proguard-rules.pro file.

-keep class com.mobsandgeeks.saripaar.** {*;}
-keep @com.mobsandgeeks.saripaar.annotation.ValidateUsing class * {*;}

Evolution

For those interested in finding out how v2 evolved from v1, watch this (~20 second) video.

Using Saripaar?

Tweet me with your Google Play URL and I'll add your app to the list :)

App	App	App
Wikipedia	Wikipedia Beta	Mizuno Baton
Fetch	HealtheMinder	MomMe
Feelknit	StreetBarz

Wiki

Please visit the wiki for a complete guide on Android Saripaar.

License

Copyright 2012 - 2015 Mobs & Geeks

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.

damson/android-saripaar