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🔽 Android LiveData Databinding Validation
DataBinding ViewModel form validation library for Android ♻
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README
Android Saripaar v2
[Logo](logo.png)
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 :)
Icon | App | Icon | App | Icon | App |
---|---|---|---|---|---|
Wikipedia | Wikipedia Beta | Mizuno Baton | |||
Fetch | HealtheMinder | MomMe | |||
Feelknit | StreetBarz | Roast Me | |||
Pipe | Snagajob | Tatva Moksh Lakshya |
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.
Saripaar Logo © 2013 - 2015, Mobs & Geeks.
*Note that all licence references and agreements mentioned in the android-saripaar README section above
are relevant to that project's source code only.