1. 程式人生 > >Android之設定EditText輸入型別(setInputType()方法和android:inputType屬性)

Android之設定EditText輸入型別(setInputType()方法和android:inputType屬性)

在Android開發過程中,我們經常使用到EditText控制元件,並且會根據各種需求設定它的輸入型別。設定EditText輸入型別主要有兩種方法,一種是使用EditText的setInputType()方法,另一種是在佈局檔案中使用android:inputType屬性來設定。
下面將介紹這兩種方法:

(1)使用EditText的setInputType()方法設定輸入型別:

    EditText editText;

    //輸入型別為沒有指定明確的型別的特殊內容型別
    editText.setInputType(InputType.TYPE_NULL);

    //輸入型別為普通文字
    editText.setInputType
(InputType.TYPE_CLASS_TEXT); //輸入型別為數字文字 editText.setInputType(InputType.TYPE_CLASS_NUMBER); //輸入型別為電話號碼 editText.setInputType(InputType.TYPE_CLASS_PHONE); //輸入型別為日期和時間 editText.setInputType(InputType.TYPE_CLASS_DATETIME); //輸入型別為{@link#TYPE_CLASS_DATETIME}的預設變化值,允許輸入日期和時間。 editText.setInputType
(InputType.TYPE_DATETIME_VARIATION_NORMAL); //輸入型別為{@link#TYPE_CLASS_DATETIME}的預設變化值,只允許輸入一個日期。 editText.setInputType(InputType.TYPE_DATETIME_VARIATION_DATE); //輸入型別為{@link#TYPE_CLASS_DATETIME}的預設變化值,只允許輸入一個時間。 editText.setInputType(InputType.TYPE_DATETIME_VARIATION_TIME); //輸入型別為決定所給文字整體類的位掩碼 editText.setInputType
(InputType.TYPE_MASK_CLASS); //輸入型別為提供附加標誌位選項的位掩碼 editText.setInputType(InputType.TYPE_MASK_FLAGS); //輸入型別為決定基類內容變化的位掩碼 editText.setInputType(InputType.TYPE_MASK_VARIATION); //輸入型別為小數數字,允許十進位制小數點提供分數值。 editText.setInputType(InputType.TYPE_NUMBER_FLAG_DECIMAL); //輸入型別為數字是帶符號的,允許在開頭帶正號或者負號 editText.setInputType(InputType.TYPE_NUMBER_FLAG_SIGNED); //輸入型別為{@link#TYPE_CLASS_NUMBER}的預設變化值:為純普通數字文字 editText.setInputType(InputType.TYPE_NUMBER_VARIATION_NORMAL); //輸入型別為{@link#TYPE_CLASS_NUMBER}的預設變化值:為數字密碼 editText.setInputType(InputType.TYPE_NUMBER_VARIATION_PASSWORD); //輸入型別為自動完成文字型別 editText.setInputType(InputType.TYPE_TEXT_FLAG_AUTO_COMPLETE); //輸入型別為自動糾正文字型別 editText.setInputType(InputType.TYPE_TEXT_FLAG_AUTO_CORRECT); //輸入型別為所有字元大寫 editText.setInputType(InputType.TYPE_TEXT_FLAG_CAP_CHARACTERS); //輸入型別為每句的第一個字元大寫 editText.setInputType(InputType.TYPE_TEXT_FLAG_CAP_SENTENCES); //輸入型別為每個單詞的第一個字母大寫 editText.setInputType(InputType.TYPE_TEXT_FLAG_CAP_WORDS); //輸入多行文字 editText.setInputType(InputType.TYPE_TEXT_FLAG_IME_MULTI_LINE); //進行輸入時,輸入法無提示 editText.setInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS); //輸入一個短的,可能是非正式的訊息,如即時訊息或簡訊。 editText.setInputType(InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE); //輸入長內容,可能是正式的訊息內容,比如電子郵件的主體 editText.setInputType(InputType.TYPE_TEXT_VARIATION_LONG_MESSAGE); //輸入文字以過濾列表等內容 editText.setInputType(InputType.TYPE_TEXT_VARIATION_FILTER); //輸入一個電子郵件地址 editText.setInputType(InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS); //輸入電子郵件主題行 editText.setInputType(InputType.TYPE_TEXT_VARIATION_EMAIL_SUBJECT); //輸入一個密碼 editText.setInputType(InputType.TYPE_TEXT_VARIATION_PASSWORD); //輸入老式的普通文字 editText.setInputType(InputType.TYPE_TEXT_VARIATION_NORMAL); //輸入人名 editText.setInputType(InputType.TYPE_TEXT_VARIATION_PERSON_NAME); //輸入郵寄地址 editText.setInputType(InputType.TYPE_TEXT_VARIATION_POSTAL_ADDRESS); //輸入語音發音輸入文字,如聯絡人拼音名稱欄位 editText.setInputType(InputType.TYPE_TEXT_VARIATION_PHONETIC); //輸入URI editText.setInputType(InputType.TYPE_TEXT_VARIATION_URI); //輸入對使用者可見的密碼 editText.setInputType(InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD); //輸入網頁表單中的文字 editText.setInputType(InputType.TYPE_TEXT_VARIATION_WEB_EDIT_TEXT); //輸入網頁表單中的郵件地址 editText.setInputType(InputType.TYPE_TEXT_VARIATION_WEB_EMAIL_ADDRESS); //輸入網頁表單中的密碼 editText.setInputType(InputType.TYPE_TEXT_VARIATION_WEB_PASSWORD);

下面是幾個簡單的例子:

        /**
         * 第一個例子:對使用者可見的密碼欄位
         */
        editText.setInputType(InputType.TYPE_CLASS_TEXT |
                InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);

        /**
         * 第二個例子:具有自動大寫的多行郵寄地址
         */
        editText.setInputType(InputType.TYPE_CLASS_TEXT |
                InputType.TYPE_TEXT_VARIATION_POSTAL_ADDRESS |
                InputType.TYPE_TEXT_FLAG_MULTI_LINE);

        /**
         * 第三個例子:一個時間欄位
         */
        editText.setInputType(InputType.TYPE_CLASS_DATETIME |
                InputType.TYPE_DATETIME_VARIATION_TIME);

在本文的後續,將會附上Android原始碼中的InputType.java。

(2)在佈局檔案中使用android:inputType屬性來設定:

    //輸入型別為沒有指定明確的型別的特殊內容型別
    android:inputType="none"

    //輸入型別為普通文字
    android:inputType="text"

     //輸入型別為數字文字
     android:inputType="number"

    //輸入型別為電話號碼
     android:inputType=”phone”

    //輸入型別為日期和時間
     android:inputType=”datetime”

     //輸入型別為{@link#TYPE_CLASS_DATETIME}的預設變化值,只允許輸入一個日期。
     android:inputType=”date //輸入型別為{@link#TYPE_CLASS_DATETIME}的預設變化值,只允許輸入一個時間。
     android:inputType=”time //輸入型別為小數數字,允許十進位制小數點提供分數值。
     android:inputType="numberDecimal"

    //輸入型別為數字是帶符號的,允許在開頭帶正號或者負號
     android:inputType="numberSigned"

    //輸入型別為數字密碼
     android:inputType="numberPassword"

    //輸入型別為自動完成文字型別
     android:inputType="textAutoComplete"

    //輸入型別為自動糾正文字型別
     android:inputType="textAutoCorrect"

    //輸入型別為所有字元大寫
     android:inputType="textCapCharacters"

    //輸入型別為每句的第一個字元大寫
     android:inputType="textCapSentences"

    //輸入型別為每個單詞的第一個字母大寫
     android:inputType="textCapWords"

    //輸入法多行文字
     android:inputType="textImeMultiLine"

    //進行輸入時,輸入法無提示
     android:inputType="textNoSuggestions"

     //輸入一個短的,可能是非正式的訊息,如即時訊息或簡訊。
     android:inputType="textShortMessage"

    //輸入長內容,可能是正式的訊息內容,比如電子郵件的主體
     android:inputType="textLongMessage"

    //輸入文字以過濾列表等內容
     android:inputType="textFilter"

    //輸入一個電子郵件地址
     android:inputType="textEmailAddress"

    //輸入電子郵件主題行
     android:inputType="textEmailSubject"

    //輸入一個密碼
     android:inputType="textPassword"

    //輸入對使用者可見的密碼
     android:inputType="textVisiblePassword"

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

    //輸入郵寄地址
     android:inputType="textPostalAddress"

    //輸入語音發音輸入文字,如聯絡人拼音名稱欄位
     android:inputType="textPhonetic"

    //輸入URI
     android:inputType="textUri"

    //輸入網頁表單中的文字
     android:inputType="textWebEditText"

    //輸入網頁表單中的郵件地址
     android:inputType="textWebEmailAddress"

    //輸入網頁表單中的密碼
     android:inputType="textWebPassword"

最後,附上上Android原始碼中的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;
}