WebUtils.java

package io.hefuyi.zhihudaily.util;

import java.util.List;

/**
 * Created by hefuyi on 16/8/8.
 */
public class WebUtils {

    public static final String BASE_URL = "file:///android_asset/";
    public static final String MIME_TYPE = "text/html";
    public static final String ENCODING = "utf-8";
    public static final String FAIL_URL = "http//:daily.zhihu.com/";

    private static final String CSS_LINK_PATTERN = " <link href=\"%s\" type=\"text/css\" rel=\"stylesheet\" />";
    private static final String NIGHT_DIV_TAG_START = "<div class=\"night\">";
    private static final String NIGHT_DIV_TAG_END = "</div>";

    private static final String DIV_IMAGE_PLACE_HOLDER="class=\"img-place-holder\"";
    private static final String DIV_IMAGE_PLACE_HOLDER_IGNORED = "class=\"img-place-holder-ignored\"";

    public static String buildHtmlWithCss(String html, List<String> cssUrls, boolean isNigheMode) {
        StringBuilder result = new StringBuilder();
        for (String cssUrl : cssUrls) {
            result.append(String.format(CSS_LINK_PATTERN, cssUrl));
        }

        if (isNigheMode) {
            result.append(NIGHT_DIV_TAG_START);
        }
        result.append(html.replace(DIV_IMAGE_PLACE_HOLDER, DIV_IMAGE_PLACE_HOLDER_IGNORED));
        if (isNigheMode) {
            result.append(NIGHT_DIV_TAG_END);
        }
        return result.toString();
    }
}