下载地址：

https://github.com/ragunathjawahar/android-saripaar

Android Saripaar

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

Android Saripaar is a simple, yet powerful rule-based UI validation library for Android. It is the SIMPLESTvalidation library available for Android.

Why
Android Saripaar?

• Declarative style validation powered by Annotations.
• Extensible
• Synchronous and Asynchronous validations, you don't have to worry about threading.
• Works with Stock Android Widgets, no custom view dependencies.
• Quick to setup, just download the jar and include it in your libs project
  folder.
• Isolates validation logic using rules.
• Compatible with other annotation frameworks such as AndroidAnnotations, RoboGuice,
  etc.,

Quick
Start

Step 1 - Annotate your widgets using Saripaar
Annotations

@Required(order = 1)
@Email(order = 2)
private EditText emailEditText;

@Password(order = 3)
@TextRule(order = 4, minLength = 6, message = "Enter at least 6 characters.")
private EditText passwordEditText;

@ConfirmPassword(order = 5)
private EditText confirmPasswordEditText;

@Checked(order = 6, message = "You must agree to the terms.")
private CheckBox iAgreeCheckBox;

The annotations are self-explanatory. The order attribute is mandatory and specifies the order in which the
validations will be performed by the library.

Step 2 - Instantiate a new Validator

public void onCreate() {
    super.onCreate();
    // 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 implements ValidationListener {

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

    public void onValidationFailed(View failedView, Rule<?> failedRule) {
        String message = failedRule.getFailureMessage();

        if (failedView instanceof EditText) {
            failedView.requestFocus();
            ((EditText) failedView).setError(message);
        } else {
            Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
        }
    }

}

• onValidationSucceeded() - Called when all your views pass all validations.
• onValidationFailed(View, Rule<?>) - Called when a Rule fails,
  you receive the View along with the Rule that
  failed.

Step 4 - Validate

registerButton.setOnClickListener(new OnClickListener() {

    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 theValidator.validateAsync() method.

Maven

<dependency>
    <groupId>com.mobsandgeeks</groupId>
    <artifactId>android-saripaar</artifactId>
    <version>1.0.2</version>
</dependency>

Gradle

dependencies {
    compile 'com.mobsandgeeks:android-saripaar:1.0.2'
}

Wiki

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

License

Copyright 2012 Mobs and 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.