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Android example source code file (SmileyParser.java)

This example Android source code file (SmileyParser.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

abstractmessageparser, android, arraylist, charsequence, content, imagespan, override, part, resources, smileyparser, smileyresources, spannablestringbuilder, style, text, token, util

The SmileyParser.java Android example source code

/*
 * Copyright (C) 2007 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.
 */

package com.google.android.util;

import android.content.Context;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.style.ImageSpan;

import java.util.ArrayList;

/**
 * Parses a text message typed by the user looking for smileys.
 */
public class SmileyParser extends AbstractMessageParser {

    private SmileyResources mRes;

    public SmileyParser(String text, SmileyResources res) {
        super(text,
                true,   // smilies
                false,  // acronyms
                false,  // formatting
                false,  // urls
                false,  // music
                false   // me text
        );
        mRes = res;
    }

    @Override
    protected Resources getResources() {
        return mRes;
    }

    /**
     * Retrieves the parsed text as a spannable string object.
     * @param context the context for fetching smiley resources.
     * @return the spannable string as CharSequence.
     */
    public CharSequence getSpannableString(Context context) {
        SpannableStringBuilder builder = new SpannableStringBuilder();

        if (getPartCount() == 0) {
            return "";
        }

        // should have only one part since we parse smiley only
        Part part = getPart(0);
        ArrayList<Token> tokens = part.getTokens();
        int len = tokens.size();
        for (int i = 0; i < len; i++) {
            Token token = tokens.get(i);
            int start = builder.length();
            builder.append(token.getRawText());
            if (token.getType() == AbstractMessageParser.Token.Type.SMILEY) {
                int resid = mRes.getSmileyRes(token.getRawText());
                if (resid != -1) {
                    builder.setSpan(new ImageSpan(context, resid),
                            start,
                            builder.length(),
                            Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                }
            }
        }
        return builder;
    }

}

Other Android examples (source code examples)

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