Returns a CharSequence concatenating the specified CharSequences - Android android.text

Android examples for android.text:SpannableString

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Description

Returns a CharSequence concatenating the specified CharSequences

Demo Code

/*//from   ww w.j ava 2  s.  com
 * Copyright (C) 2013 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.
 */
import android.text.Spannable;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.SpannedString;
import android.text.TextUtils;
import android.text.style.SuggestionSpan;
import android.text.style.URLSpan;
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main{

    /**
     * Returns a CharSequence concatenating the specified CharSequences, retaining their
     * SuggestionSpans that don't have the PARAGRAPH flag, but not other spans.
     *
     * This code is almost entirely taken from {@link TextUtils#concat(CharSequence...)}, except
     * it calls copyNonParagraphSuggestionSpansFrom instead of {@link TextUtils#copySpansFrom}.
     */
    public static CharSequence concatWithNonParagraphSuggestionSpansOnly(
            CharSequence... text) {
        if (text.length == 0) {
            return "";
        }

        if (text.length == 1) {
            return text[0];
        }

        boolean spanned = false;
        for (int i = 0; i < text.length; i++) {
            if (text[i] instanceof Spanned) {
                spanned = true;
                break;
            }
        }

        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < text.length; i++) {
            sb.append(text[i]);
        }

        if (!spanned) {
            return sb.toString();
        }

        SpannableString ss = new SpannableString(sb);
        int off = 0;
        for (int i = 0; i < text.length; i++) {
            int len = text[i].length();

            if (text[i] instanceof Spanned) {
                copyNonParagraphSuggestionSpansFrom((Spanned) text[i], 0,
                        len, ss, off);
            }

            off += len;
        }

        return new SpannedString(ss);
    }

}

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