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evelyne24evelyne24
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Simple example of form validation.
(TODO fix the RadioGroup)
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12 files changed

+476
-30
lines changed

12 files changed

+476
-30
lines changed

‎app/src/main/AndroidManifest.xml

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<category android:name="android.intent.category.LAUNCHER"/>
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</intent-filter>
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</activity>
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<activity android:name=".FormActivity"/>
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</application>
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</manifest>

‎app/src/main/java/ext/sample/FormActivity.java

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package ext.sample;
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import android.app.Activity;
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import android.os.Bundle;
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/**
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* Created by evelina on 20/09/14.
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*/
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public class FormActivity extends Activity {
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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getFragmentManager().beginTransaction()
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.replace(android.R.id.content, new SimpleFormFragment())
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.commit();
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}
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}

‎app/src/main/java/ext/sample/HomeActivity.java

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package ext.sample;
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import android.app.Activity;
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import android.content.Intent;
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import android.os.Bundle;
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import android.view.Menu;
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import android.view.MenuItem;
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import butterknife.ButterKnife;
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import butterknife.OnClick;
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public class HomeActivity extends Activity {
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_home);
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ButterKnife.inject(this);
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}
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}
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return super.onOptionsItemSelected(item);
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}
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@OnClick(R.id.button)
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void openForm() {
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startActivity(new Intent(this, FormActivity.class));
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}
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}

‎app/src/main/java/ext/sample/SimpleFormFragment.java

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package ext.sample;
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import android.app.Fragment;
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import android.os.Bundle;
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import android.util.Log;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.EditText;
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import android.widget.RadioGroup;
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import org.joda.time.DateTime;
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import java.util.HashMap;
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import java.util.Map;
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import butterknife.ButterKnife;
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import butterknife.OnClick;
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import ext.extensions.forms.Condition;
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import ext.extensions.forms.DateInput;
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import ext.extensions.forms.DateMultiInput;
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import ext.extensions.forms.Form;
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import ext.extensions.forms.Forms.FormBuilder;
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import ext.extensions.forms.Mapping;
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import ext.extensions.forms.StringInput;
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import ext.extensions.forms.ValidationException;
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import ext.sample.SimpleFormFragment.User.Gender;
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/**
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* Created by evelina on 20/09/14.
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*/
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public class SimpleFormFragment extends Fragment {
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private Form<User> mForm;
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
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View view = inflater.inflate(R.layout.fragment_simple_form, container, false);
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ButterKnife.inject(this, view);
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return view;
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}
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@Override
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public void onViewCreated(View view, Bundle savedInstanceState) {
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super.onViewCreated(view, savedInstanceState);
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FormBuilder builder = new FormBuilder();
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builder.addViewAndInput((EditText) view.findViewById(R.id.username), new StringInput("username", 6, 32));
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builder.addView("birthday_day", (EditText) view.findViewById(R.id.birthday_day));
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builder.addView("birthday_month", (EditText) view.findViewById(R.id.birthday_month));
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builder.addView("birthday_year", (EditText) view.findViewById(R.id.birthday_year));
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builder.addInput(new DateMultiInput("birthday").verifying(new Condition<DateTime>() {
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@Override
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public boolean verify(DateTime value) {
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// at least 18
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return value.isBefore(DateTime.now().minusYears(18));
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}
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}, R.string.birthday_error));
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builder.addViewAndInput((RadioGroup) view.findViewById(R.id.gender),
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new StringInput("gender").map(new Mapping<String, Gender>() {
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@Override
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public Gender bind(String value) throws ValidationException {
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try {
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return Gender.valueOf(value.toUpperCase());
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} catch (IllegalArgumentException e) {
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throw new ValidationException("gender", R.string.gender_error);
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}
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}
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@Override
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public String unbind(Gender value) {
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return value.name();
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}
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}));
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mForm = builder.build(new Mapping<Map<String, Object>, User>() {
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@Override
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public User bind(Map<String, Object> value) throws ValidationException {
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return new User((String) value.get("username"), (DateTime) value.get("birthday"), (Gender) value.get("gender"));
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}
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@Override
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public Map<String, Object> unbind(final User value) {
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return new HashMap<String, Object>() {{
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put("username", value.username);
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put("birthday", value.birthday);
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put("gender", value.gender);
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}};
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}
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});
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}
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@OnClick(R.id.submit)
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void submit() {
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try {
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User user = mForm.bind();
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Log.i("FORMS", "Validation passed: " + user);
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} catch (ValidationException e) {
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Log.i("FORMS", "Validation failed: " + e);
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}
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}
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public static class User {
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public static enum Gender {
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MALE, FEMALE
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}
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public final String username;
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public final DateTime birthday;
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public final Gender gender;
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public User(String username, DateTime birthday, Gender gender) {
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this.username = username;
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this.birthday = birthday;
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this.gender = gender;
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}
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@Override
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public String toString() {
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return "User{" +
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"username='" + username + '\'' +
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", birthday=" + birthday +
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", gender=" + gender +
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'}';
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}
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}
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}

‎app/src/main/res/layout/activity_home.xml

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android:text="Normal text"/>
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<ext.Button
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android:id="@+id/button"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_marginTop="16dp"

‎app/src/main/res/layout/fragment_simple_form.xml

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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:orientation="vertical"
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android:padding="20dp">
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<ext.EditText
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android:id="@+id/username"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:hint="Username"/>
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<RadioGroup
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android:id="@+id/gender"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:orientation="horizontal"
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android:layout_marginTop="20dp">
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<RadioButton
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android:id="@+id/male"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="Male"/>
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<RadioButton
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android:id="@+id/female"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="Female"/>
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</RadioGroup>
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<ext.TextView
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:layout_marginTop="20dp"
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android:text="Birthday"/>
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<LinearLayout
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:orientation="horizontal"
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android:layout_marginTop="20dp">
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<ext.EditText
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android:id="@+id/birthday_day"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:minEms="2"
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android:gravity="center"
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android:hint="dd"/>
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<ext.EditText
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android:id="@+id/birthday_month"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_marginLeft="8dp"
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android:minEms="2"
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android:gravity="center"
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android:hint="mm"/>
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<ext.EditText
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android:id="@+id/birthday_year"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_marginLeft="8dp"
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android:minEms="4"
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android:gravity="center"
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android:hint="yyyy"/>
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</LinearLayout>
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<ext.Button
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android:id="@+id/submit"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_marginTop="20dp"
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android:text="Submit"/>
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</LinearLayout>

‎app/src/main/res/values/strings.xml

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<string name="hello_world">Hello world!</string>
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<string name="action_settings">Settings</string>
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<string name="birthday_error">You need to be at least 18.</string>
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<string name="gender_error">Expecting \'male\' or \'female\'.</string>
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</resources>

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