Returns a TelephonyManager int constant as a string. - Android android.telephony

Android examples for android.telephony:TelephonyManager

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Description

Returns a TelephonyManager int constant as a string.

Demo Code

/*/*from w w  w .jav  a 2 s.  c o m*/
 * This source is part of the
 *      _____  ___   ____
 *  __ / / _ \/ _ | / __/___  _______ _
 * / // / , _/ __ |/ _/_/ _ \/ __/ _ `/
 * \___/_/|_/_/ |_/_/ (_)___/_/  \_, /
 *                              /___/
 * repository.
 *
 * Copyright (C) 2013 Carmen Alvarez (c@rmen.ca)
 *
 * 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.
 */
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;

import android.telephony.TelephonyManager;
import android.text.TextUtils;

public class Main {
  private static final String TAG = "";
  private static final Map<String, String> sConstantsCache = new HashMap<String, String>();

  /**
   * Returns a TelephonyManager int constant as a string. For example, for
   * {@link TelephonyManager#DATA_CONNECTED}, this returns the string
   * "CONNECTED".
   *
   * @param fieldPrefix
   *          the prefix of the TelephonyManager field name. For example, for
   *          {@link TelephonyManager#DATA_CONNECTED}, this should be "DATA"
   * @param excludePrefix
   *          in most cases this can be null. However, in the case of
   *          {@link TelephonyManager#DATA_CONNECTED}, we need to set exclude
   *          prefix to "DATA_ACTIVITY" to make sure we don't return OUT, as
   *          DATA_ACTIVITY_OUT has the same value as DATA_CONNECTED.
   * @param value
   *          the value of the constant.
   * @return the name of the constant having the given fieldPrefix, not having
   *         the given excludePrefix, and having the given value.
   */
  public static String getConstantName(String fieldPrefix,
      String excludePrefix, int value) {

    final String key = fieldPrefix + ":" + value;
    String result = sConstantsCache.get(key);
    if (result != null) {
      return result;
    }
    Field[] fields = TelephonyManager.class.getFields();
    for (Field field : fields) {
      try {
        String fieldName = field.getName();
        if (fieldName.startsWith(fieldPrefix)) {
          if (!TextUtils.isEmpty(excludePrefix)
              && fieldName.startsWith(excludePrefix))
            continue;
          if (field.getInt(null) == value) {
            result = field.getName().substring(fieldPrefix.length() + 1);

            sConstantsCache.put(key, result);
            return result;
          }
        }
      } catch (IllegalArgumentException e) {
      } catch (IllegalAccessException e) {
      }
    }
    return "";
  }
}

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