Android InputType

转载： http://blog.csdn.net/wei_zhi/article/details/50094503

在Android开发过程中，我们经常使用到EditText控件，并且会根据各种需求设置它的输入类型。设置EditText输入类型主要有两种方法，一种是使用EditText的setInputType()方法，另一种是在布局文件中使用android:inputType属性来设置。 

下面将介绍这两种方法：

（1）使用EditText的setInputType()方法设置输入类型：

    EditText editText;

    //输入类型为没有指定明确的类型的特殊内容类型
    editText.setInputType(InputType.TYPE_NULL);

    //输入类型为普通文本
    editText.setInputType(InputType.TYPE_CLASS_TEXT);

    //输入类型为数字文本
    editText.setInputType(InputType.TYPE_CLASS_NUMBER);

    //输入类型为电话号码
    editText.setInputType(InputType.TYPE_CLASS_PHONE);

    //输入类型为日期和时间
    editText.setInputType(InputType.TYPE_CLASS_DATETIME);

    //输入类型为{@link#TYPE_CLASS_DATETIME}的缺省变化值，允许输入日期和时间。
    editText.setInputType(InputType.TYPE_DATETIME_VARIATION_NORMAL);

    //输入类型为{@link#TYPE_CLASS_DATETIME}的缺省变化值，只允许输入一个日期。
    editText.setInputType(InputType.TYPE_DATETIME_VARIATION_DATE);

    //输入类型为{@link#TYPE_CLASS_DATETIME}的缺省变化值，只允许输入一个时间。
    editText.setInputType(InputType.TYPE_DATETIME_VARIATION_TIME);

    //输入类型为决定所给文本整体类的位掩码
    editText.setInputType(InputType.TYPE_MASK_CLASS);

    //输入类型为提供附加标志位选项的位掩码
    editText.setInputType(InputType.TYPE_MASK_FLAGS);

    //输入类型为决定基类内容变化的位掩码
    editText.setInputType(InputType.TYPE_MASK_VARIATION);

    //输入类型为小数数字，允许十进制小数点提供分数值。
    editText.setInputType(InputType.TYPE_NUMBER_FLAG_DECIMAL);
    //输入类型为数字是带符号的，允许在开头带正号或者负号
    editText.setInputType(InputType.TYPE_NUMBER_FLAG_SIGNED);

    //输入类型为{@link#TYPE_CLASS_NUMBER}的缺省变化值：为纯普通数字文本
    editText.setInputType(InputType.TYPE_NUMBER_VARIATION_NORMAL);

    //输入类型为{@link#TYPE_CLASS_NUMBER}的缺省变化值：为数字密码
    editText.setInputType(InputType.TYPE_NUMBER_VARIATION_PASSWORD);

    //输入类型为自动完成文本类型
    editText.setInputType(InputType.TYPE_TEXT_FLAG_AUTO_COMPLETE);

    //输入类型为自动纠正文本类型
    editText.setInputType(InputType.TYPE_TEXT_FLAG_AUTO_CORRECT);

    //输入类型为所有字符大写
    editText.setInputType(InputType.TYPE_TEXT_FLAG_CAP_CHARACTERS);

    //输入类型为每句的第一个字符大写
    editText.setInputType(InputType.TYPE_TEXT_FLAG_CAP_SENTENCES);

    //输入类型为每个单词的第一个字母大写
    editText.setInputType(InputType.TYPE_TEXT_FLAG_CAP_WORDS);

    //输入多行文本
    editText.setInputType(InputType.TYPE_TEXT_FLAG_IME_MULTI_LINE);

    //进行输入时，输入法无提示
    editText.setInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);

    //输入一个短的，可能是非正式的消息，如即时消息或短信。
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE);

    //输入长内容，可能是正式的消息内容，比如电子邮件的主体
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_LONG_MESSAGE);

    //输入文本以过滤列表等内容
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_FILTER);

    //输入一个电子邮件地址
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS);

    //输入电子邮件主题行
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_EMAIL_SUBJECT);

    //输入一个密码
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_PASSWORD);

    //输入老式的普通文本
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_NORMAL);

    //输入人名
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_PERSON_NAME);

    //输入邮寄地址
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_POSTAL_ADDRESS);

    //输入语音发音输入文本，如联系人拼音名称字段
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_PHONETIC);

    //输入URI
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_URI);

    //输入对用户可见的密码
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);

    //输入网页表单中的文本
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT);

    //输入网页表单中的邮件地址
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS);

    //输入网页表单中的密码
    editText.setInputType(InputType.TYPE_TEXT_VARIATION_WEB_PASSWORD);

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下面是几个简单的例子：

        /**
         * 第一个例子：对用户可见的密码字段
         */
        editText.setInputType(InputType.TYPE_CLASS_TEXT |
                InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);

        /**
         * 第二个例子：具有自动大写的多行邮寄地址
         */
        editText.setInputType(InputType.TYPE_CLASS_TEXT |
                InputType.TYPE_TEXT_VARIATION_POSTAL_ADDRESS |
                InputType.TYPE_TEXT_FLAG_MULTI_LINE);

        /**
         * 第三个例子：一个时间字段
         */
        editText.setInputType(InputType.TYPE_CLASS_DATETIME |
                InputType.TYPE_DATETIME_VARIATION_TIME);

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在本文的后续，将会附上Android源码中的InputType.java。

（2）在布局文件中使用android:inputType属性来设置：

    //输入类型为没有指定明确的类型的特殊内容类型
    android:inputType="none"

    //输入类型为普通文本
    android:inputType="text"

     //输入类型为数字文本
     android:inputType="number"

    //输入类型为电话号码
     android:inputType=”phone”

    //输入类型为日期和时间
     android:inputType=”datetime”

     //输入类型为{@link#TYPE_CLASS_DATETIME}的缺省变化值，只允许输入一个日期。
     android:inputType=”date”

     //输入类型为{@link#TYPE_CLASS_DATETIME}的缺省变化值，只允许输入一个时间。
     android:inputType=”time”

    //输入类型为小数数字，允许十进制小数点提供分数值。
     android:inputType="numberDecimal"

    //输入类型为数字是带符号的，允许在开头带正号或者负号
     android:inputType="numberSigned"

    //输入类型为数字密码
     android:inputType="numberPassword"

    //输入类型为自动完成文本类型
     android:inputType="textAutoComplete"

    //输入类型为自动纠正文本类型
     android:inputType="textAutoCorrect"

    //输入类型为所有字符大写
     android:inputType="textCapCharacters"

    //输入类型为每句的第一个字符大写
     android:inputType="textCapSentences"

    //输入类型为每个单词的第一个字母大写
     android:inputType="textCapWords"

    //输入法多行文本
     android:inputType="textImeMultiLine"

    //进行输入时，输入法无提示
     android:inputType="textNoSuggestions"

     //输入一个短的，可能是非正式的消息，如即时消息或短信。
     android:inputType="textShortMessage"

    //输入长内容，可能是正式的消息内容，比如电子邮件的主体
     android:inputType="textLongMessage"

    //输入文本以过滤列表等内容
     android:inputType="textFilter"

    //输入一个电子邮件地址
     android:inputType="textEmailAddress"

    //输入电子邮件主题行
     android:inputType="textEmailSubject"

    //输入一个密码
     android:inputType="textPassword"

    //输入对用户可见的密码
     android:inputType="textVisiblePassword"

    //输入人的姓名
     android:inputType="textPersonName"

    //输入邮寄地址
     android:inputType="textPostalAddress"

    //输入语音发音输入文本，如联系人拼音名称字段
     android:inputType="textPhonetic"

    //输入URI
     android:inputType="textUri"

    //输入网页表单中的文本
     android:inputType="textWebEditText"

    //输入网页表单中的邮件地址
     android:inputType="textWebEmailAddress"

    //输入网页表单中的密码
     android:inputType="textWebPassword"

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最后，附上上Android源码中的InputType.java：

/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * 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.
 */

package android.text;

import android.text.TextUtils;

/**
 * Bit definitions for an integer defining the basic content type of text
 * held in an {@link Editable} object. Supported classes may be combined
 * with variations and flags to indicate desired behaviors.
 *
 * <h3>Examples</h3>
 *
 * <dl>
 * <dt>A password field with with the password visible to the user:
 * <dd>inputType = TYPE_CLASS_TEXT |
 *     TYPE_TEXT_VARIATION_VISIBLE_PASSWORD
 *
 * <dt>A multi-line postal address with automatic capitalization:
 * <dd>inputType = TYPE_CLASS_TEXT |
 *     TYPE_TEXT_VARIATION_POSTAL_ADDRESS |
 *     TYPE_TEXT_FLAG_MULTI_LINE
 *
 * <dt>A time field:
 * <dd>inputType = TYPE_CLASS_DATETIME |
 *     TYPE_DATETIME_VARIATION_TIME
 * </dl>
 */
public interface InputType {
    /**
     * Mask of bits that determine the overall class
     * of text being given.  Currently supported classes are:
     * {@link #TYPE_CLASS_TEXT}, {@link #TYPE_CLASS_NUMBER},
     * {@link #TYPE_CLASS_PHONE}, {@link #TYPE_CLASS_DATETIME}.
     * <p>IME authors: If the class is not one you
     * understand, assume {@link #TYPE_CLASS_TEXT} with NO variation
     * or flags.<p>
     */
    public static final int TYPE_MASK_CLASS = 0x0000000f;

    /**
     * Mask of bits that determine the variation of
     * the base content class.
     */
    public static final int TYPE_MASK_VARIATION = 0x00000ff0;

    /**
     * Mask of bits that provide addition bit flags
     * of options.
     */
    public static final int TYPE_MASK_FLAGS = 0x00fff000;

    /**
     * Special content type for when no explicit type has been specified.
     * This should be interpreted to mean that the target input connection
     * is not rich, it can not process and show things like candidate text nor
     * retrieve the current text, so the input method will need to run in a
     * limited "generate key events" mode, if it supports it. Note that some
     * input methods may not support it, for example a voice-based input
     * method will likely not be able to generate key events even if this
     * flag is set.
     */
    public static final int TYPE_NULL = 0x00000000;

    /**
     * Class for normal text.  This class supports the following flags (only
     * one of which should be set):
     * {@link #TYPE_TEXT_FLAG_CAP_CHARACTERS},
     * {@link #TYPE_TEXT_FLAG_CAP_WORDS}, and.
     * {@link #TYPE_TEXT_FLAG_CAP_SENTENCES}.  It also supports the
     * following variations:
     * {@link #TYPE_TEXT_VARIATION_NORMAL}, and
     * {@link #TYPE_TEXT_VARIATION_URI}.  If you do not recognize the
     * variation, normal should be assumed.
     */
    public static final int TYPE_CLASS_TEXT = 0x00000001;

    /**
     * Flag for {@link #TYPE_CLASS_TEXT}: capitalize all characters.  Overrides
     * {@link #TYPE_TEXT_FLAG_CAP_WORDS} and
     * {@link #TYPE_TEXT_FLAG_CAP_SENTENCES}.  This value is explicitly defined
     * to be the same as {@link TextUtils#CAP_MODE_CHARACTERS}. Of course,
     * this only affects languages where there are upper-case and lower-case letters.
     */
    public static final int TYPE_TEXT_FLAG_CAP_CHARACTERS = 0x00001000;

    /**
     * Flag for {@link #TYPE_CLASS_TEXT}: capitalize the first character of
     * every word.  Overrides {@link #TYPE_TEXT_FLAG_CAP_SENTENCES}.  This
     * value is explicitly defined
     * to be the same as {@link TextUtils#CAP_MODE_WORDS}. Of course,
     * this only affects languages where there are upper-case and lower-case letters.
     */
    public static final int TYPE_TEXT_FLAG_CAP_WORDS = 0x00002000;

    /**
     * Flag for {@link #TYPE_CLASS_TEXT}: capitalize the first character of
     * each sentence.  This value is explicitly defined
     * to be the same as {@link TextUtils#CAP_MODE_SENTENCES}. For example
     * in English it means to capitalize after a period and a space (note that other
     * languages may have different characters for period, or not use spaces,
     * or use different grammatical rules). Of course,
     * this only affects languages where there are upper-case and lower-case letters.
     */
    public static final int TYPE_TEXT_FLAG_CAP_SENTENCES = 0x00004000;

    /**
     * Flag for {@link #TYPE_CLASS_TEXT}: the user is entering free-form
     * text that should have auto-correction applied to it. Without this flag,
     * the IME will not try to correct typos. You should always set this flag
     * unless you really expect users to type non-words in this field, for
     * example to choose a name for a character in a game.
     * Contrast this with {@link #TYPE_TEXT_FLAG_AUTO_COMPLETE} and
     * {@link #TYPE_TEXT_FLAG_NO_SUGGESTIONS}:
     * {@code TYPE_TEXT_FLAG_AUTO_CORRECT} means that the IME will try to
     * auto-correct typos as the user is typing, but does not define whether
     * the IME offers an interface to show suggestions.
     */
    public static final int TYPE_TEXT_FLAG_AUTO_CORRECT = 0x00008000;

    /**
     * Flag for {@link #TYPE_CLASS_TEXT}: the text editor (which means
     * the application) is performing auto-completion of the text being entered
     * based on its own semantics, which it will present to the user as they type.
     * This generally means that the input method should not be showing
     * candidates itself, but can expect the editor to supply its own
     * completions/candidates from
     * {@link android.view.inputmethod.InputMethodSession#displayCompletions
     * InputMethodSession.displayCompletions()} as a result of the editor calling
     * {@link android.view.inputmethod.InputMethodManager#displayCompletions
     * InputMethodManager.displayCompletions()}.
     * Note the contrast with {@link #TYPE_TEXT_FLAG_AUTO_CORRECT} and
     * {@link #TYPE_TEXT_FLAG_NO_SUGGESTIONS}:
     * {@code TYPE_TEXT_FLAG_AUTO_COMPLETE} means the editor should show an
     * interface for displaying suggestions, but instead of supplying its own
     * it will rely on the Editor to pass completions/corrections.
     */
    public static final int TYPE_TEXT_FLAG_AUTO_COMPLETE = 0x00010000;

    /**
     * Flag for {@link #TYPE_CLASS_TEXT}: multiple lines of text can be
     * entered into the field.  If this flag is not set, the text field
     * will be constrained to a single line. The IME may also choose not to
     * display an enter key when this flag is not set, as there should be no
     * need to create new lines.
     */
    public static final int TYPE_TEXT_FLAG_MULTI_LINE = 0x00020000;

    /**
     * Flag for {@link #TYPE_CLASS_TEXT}: the regular text view associated
     * with this should not be multi-line, but when a fullscreen input method
     * is providing text it should use multiple lines if it can.
     */
    public static final int TYPE_TEXT_FLAG_IME_MULTI_LINE = 0x00040000;

    /**
     * Flag for {@link #TYPE_CLASS_TEXT}: the input method does not need to
     * display any dictionary-based candidates. This is useful for text views that
     * do not contain words from the language and do not benefit from any
     * dictionary-based completions or corrections. It overrides the
     * {@link #TYPE_TEXT_FLAG_AUTO_CORRECT} value when set.
     * Please avoid using this unless you are certain this is what you want.
     * Many input methods need suggestions to work well, for example the ones
     * based on gesture typing. Consider clearing
     * {@link #TYPE_TEXT_FLAG_AUTO_CORRECT} instead if you just do not
     * want the IME to correct typos.
     * Note the contrast with {@link #TYPE_TEXT_FLAG_AUTO_CORRECT} and
     * {@link #TYPE_TEXT_FLAG_AUTO_COMPLETE}:
     * {@code TYPE_TEXT_FLAG_NO_SUGGESTIONS} means the IME should never
     * show an interface to display suggestions. Most IMEs will also take this to
     * mean they should not try to auto-correct what the user is typing.
     */
    public static final int TYPE_TEXT_FLAG_NO_SUGGESTIONS = 0x00080000;

    /**
     * Default variation of {@link #TYPE_CLASS_TEXT}: plain old normal text.
     */
    public static final int TYPE_TEXT_VARIATION_NORMAL = 0x00000000;

    /**
     * Variation of {@link #TYPE_CLASS_TEXT}: entering a URI.
     */
    public static final int TYPE_TEXT_VARIATION_URI = 0x00000010;

    /**
     * Variation of {@link #TYPE_CLASS_TEXT}: entering an e-mail address.
     */
    public static final int TYPE_TEXT_VARIATION_EMAIL_ADDRESS = 0x00000020;

    /**
     * Variation of {@link #TYPE_CLASS_TEXT}: entering the subject line of
     * an e-mail.
     */
    public static final int TYPE_TEXT_VARIATION_EMAIL_SUBJECT = 0x00000030;

    /**
     * Variation of {@link #TYPE_CLASS_TEXT}: entering a short, possibly informal
     * message such as an instant message or a text message.
     */
    public static final int TYPE_TEXT_VARIATION_SHORT_MESSAGE = 0x00000040;

    /**
     * Variation of {@link #TYPE_CLASS_TEXT}: entering the content of a long, possibly
     * formal message such as the body of an e-mail.
     */
    public static final int TYPE_TEXT_VARIATION_LONG_MESSAGE = 0x00000050;

    /**
     * Variation of {@link #TYPE_CLASS_TEXT}: entering the name of a person.
     */
    public static final int TYPE_TEXT_VARIATION_PERSON_NAME = 0x00000060;

    /**
     * Variation of {@link #TYPE_CLASS_TEXT}: entering a postal mailing address.
     */
    public static final int TYPE_TEXT_VARIATION_POSTAL_ADDRESS = 0x00000070;

    /**
     * Variation of {@link #TYPE_CLASS_TEXT}: entering a password.
     */
    public static final int TYPE_TEXT_VARIATION_PASSWORD = 0x00000080;

    /**
     * Variation of {@link #TYPE_CLASS_TEXT}: entering a password, which should
     * be visible to the user.
     */
    public static final int TYPE_TEXT_VARIATION_VISIBLE_PASSWORD = 0x00000090;

    /**
     * Variation of {@link #TYPE_CLASS_TEXT}: entering text inside of a web form.
     */
    public static final int TYPE_TEXT_VARIATION_WEB_EDIT_TEXT = 0x000000a0;

    /**
     * Variation of {@link #TYPE_CLASS_TEXT}: entering text to filter contents
     * of a list etc.
     */
    public static final int TYPE_TEXT_VARIATION_FILTER = 0x000000b0;

    /**
     * Variation of {@link #TYPE_CLASS_TEXT}: entering text for phonetic
     * pronunciation, such as a phonetic name field in contacts. This is mostly
     * useful for languages where one spelling may have several phonetic
     * readings, like Japanese.
     */
    public static final int TYPE_TEXT_VARIATION_PHONETIC = 0x000000c0;

    /**
     * Variation of {@link #TYPE_CLASS_TEXT}: entering e-mail address inside
     * of a web form.  This was added in
     * {@link android.os.Build.VERSION_CODES#HONEYCOMB}.  An IME must target
     * this API version or later to see this input type; if it doesn't, a request
     * for this type will be seen as {@link #TYPE_TEXT_VARIATION_EMAIL_ADDRESS}
     * when passed through {@link android.view.inputmethod.EditorInfo#makeCompatible(int)
     * EditorInfo.makeCompatible(int)}.
     */
    public static final int TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS = 0x000000d0;

    /**
     * Variation of {@link #TYPE_CLASS_TEXT}: entering password inside
     * of a web form.  This was added in
     * {@link android.os.Build.VERSION_CODES#HONEYCOMB}.  An IME must target
     * this API version or later to see this input type; if it doesn't, a request
     * for this type will be seen as {@link #TYPE_TEXT_VARIATION_PASSWORD}
     * when passed through {@link android.view.inputmethod.EditorInfo#makeCompatible(int)
     * EditorInfo.makeCompatible(int)}.
     */
    public static final int TYPE_TEXT_VARIATION_WEB_PASSWORD = 0x000000e0;

    /**
     * Class for numeric text.  This class supports the following flags:
     * {@link #TYPE_NUMBER_FLAG_SIGNED} and
     * {@link #TYPE_NUMBER_FLAG_DECIMAL}.  It also supports the following
     * variations: {@link #TYPE_NUMBER_VARIATION_NORMAL} and
     * {@link #TYPE_NUMBER_VARIATION_PASSWORD}.
     * <p>IME authors: If you do not recognize
     * the variation, normal should be assumed.</p>
     */
    public static final int TYPE_CLASS_NUMBER = 0x00000002;

    /**
     * Flag of {@link #TYPE_CLASS_NUMBER}: the number is signed, allowing
     * a positive or negative sign at the start.
     */
    public static final int TYPE_NUMBER_FLAG_SIGNED = 0x00001000;

    /**
     * Flag of {@link #TYPE_CLASS_NUMBER}: the number is decimal, allowing
     * a decimal point to provide fractional values.
     */
    public static final int TYPE_NUMBER_FLAG_DECIMAL = 0x00002000;

    /**
     * Default variation of {@link #TYPE_CLASS_NUMBER}: plain normal
     * numeric text.  This was added in
     * {@link android.os.Build.VERSION_CODES#HONEYCOMB}.  An IME must target
     * this API version or later to see this input type; if it doesn't, a request
     * for this type will be dropped when passed through
     * {@link android.view.inputmethod.EditorInfo#makeCompatible(int)
     * EditorInfo.makeCompatible(int)}.
     */
    public static final int TYPE_NUMBER_VARIATION_NORMAL = 0x00000000;

    /**
     * Variation of {@link #TYPE_CLASS_NUMBER}: entering a numeric password.
     * This was added in {@link android.os.Build.VERSION_CODES#HONEYCOMB}.  An
     * IME must target this API version or later to see this input type; if it
     * doesn't, a request for this type will be dropped when passed
     * through {@link android.view.inputmethod.EditorInfo#makeCompatible(int)
     * EditorInfo.makeCompatible(int)}.
     */
    public static final int TYPE_NUMBER_VARIATION_PASSWORD = 0x00000010;

    /**
     * Class for a phone number.  This class currently supports no variations
     * or flags.
     */
    public static final int TYPE_CLASS_PHONE = 0x00000003;

    /**
     * Class for dates and times.  It supports the
     * following variations:
     * {@link #TYPE_DATETIME_VARIATION_NORMAL}
     * {@link #TYPE_DATETIME_VARIATION_DATE}, and
     * {@link #TYPE_DATETIME_VARIATION_TIME}.
     */
    public static final int TYPE_CLASS_DATETIME = 0x00000004;

    /**
     * Default variation of {@link #TYPE_CLASS_DATETIME}: allows entering
     * both a date and time.
     */
    public static final int TYPE_DATETIME_VARIATION_NORMAL = 0x00000000;

    /**
     * Default variation of {@link #TYPE_CLASS_DATETIME}: allows entering
     * only a date.
     */
    public static final int TYPE_DATETIME_VARIATION_DATE = 0x00000010;

    /**
     * Default variation of {@link #TYPE_CLASS_DATETIME}: allows entering
     * only a time.
     */
    public static final int TYPE_DATETIME_VARIATION_TIME = 0x00000020;
}