1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.android.setupdesign.span; 18 19 import android.text.Spannable; 20 21 /** 22 * Contains helper methods for dealing with text spans, e.g. the ones in {@code android.text.style}. 23 */ 24 public class SpanHelper { 25 26 /** 27 * Adds {@code newSpans} at the same start and end indices as {@code oldSpan} and remove {@code 28 * oldSpan} from the {@code spannable}. 29 */ replaceSpan(Spannable spannable, Object oldSpan, Object... newSpans)30 public static void replaceSpan(Spannable spannable, Object oldSpan, Object... newSpans) { 31 final int spanStart = spannable.getSpanStart(oldSpan); 32 final int spanEnd = spannable.getSpanEnd(oldSpan); 33 spannable.removeSpan(oldSpan); 34 for (Object newSpan : newSpans) { 35 spannable.setSpan(newSpan, spanStart, spanEnd, 0); 36 } 37 } 38 } 39