Finds the first occurrence of text and applies color to the span. - Android Graphics

Android examples for Graphics:Spannable Color

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Description

Finds the first occurrence of text and applies color to the span.

Demo Code

/**//from w w  w . ja v a2 s  . c  om
 * Copyright (c) 2014, Airbitz Inc
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms are permitted provided that 
 * the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer. 
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. Redistribution or use of modified source code requires the express written
 *    permission of Airbitz Inc.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * The views and conclusions contained in the software and documentation are those
 * of the authors and should not be interpreted as representing official policies, 
 * either expressed or implied, of the Airbitz Project.
 */
import android.graphics.Typeface;
import android.text.Spannable;
import android.text.Spanned;
import android.text.TextUtils;
import android.text.style.BackgroundColorSpan;
import android.text.style.ForegroundColorSpan;
import android.text.style.StyleSpan;

public class Main{
    /**
     * Finds the first occurrence of <code>text</code> and applies <code>color</code> to
     * the span.
     * 
     * @param span the span
     * @param text the text to apply color to
     * @param color the color
     */
    public static void setColorSpan(Spannable span, String text, int color) {

        if (TextUtils.isEmpty(text)) {
            return;
        }

        // Find index where to apply color
        final int start = span.toString().indexOf(text);
        final int end = start + text.length();

        if (start != -1) {
            final ForegroundColorSpan colorSpan = new ForegroundColorSpan(
                    color);
            span.setSpan(colorSpan, start, end,
                    Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
        }
    }
}

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