Get Alphanumeric InputFilter - Android android.text

Android examples for android.text:InputFilter

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  4. InputFilter

Description

Get Alphanumeric InputFilter

Demo Code

/*// w  ww. j  ava2 s .  co  m
 *
 *    * Copyright 2014 Mobien Technologies Pvt. Ltd.
 *    *
 *    * 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.
 *    *
 *    * @author Basit Parkar
 *    * @date 7/6/14 6:33 PM
 *
 */
//package com.java2s;
import android.text.InputFilter;
import android.text.Spanned;

public class Main {
    /**
     * Get Alphanumeric filter
     *
     * @return filter allowing alphabets and numbers
     */
    public static InputFilter getAlphaNumericAllowedFilter() {
        InputFilter filter = new InputFilter() {
            public CharSequence filter(CharSequence source, int start,
                    int end, Spanned dest, int dstart, int dend) {
                for (int i = start; i < end; i++) {
                    if (!Character.isLetterOrDigit(source.charAt(i))) {
                        return "";
                    }
                }
                return null;
            }
        };

        return filter;
    }
}

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