解析/res/xml下的xml文件

android xml目录下的文件主要用于设置界面的配置信息,但是我们也可以将一些东西存放到xml目录下,例如MIME TYPE, 废话不多说,直接上代码.

<?xml version="1.0" encoding="utf-8"?>
<MimeTypes>
    <type extension=".3gp" mimetype="video/3gpp" />
    <type extension=".apk" mimetype="application/vnd.android.package-archive" />
    <type extension=".asf" mimetype="video/x-ms-asf" />
    <type extension=".avi" mimetype="video/x-msvideo" />
    <type extension=".bin" mimetype="application/octet-stream" />
    <type extension=".bmp" mimetype="image/bmp" />
    <type extension=".c" mimetype="text/plain" />
    <type extension=".class" mimetype="application/octet-stream" />
    <type extension=".conf" mimetype="text/plain" />
    <type extension=".cpp" mimetype="text/plain" />
    <type extension=".csv" mimetype="text/csv" />
    <type extension=".doc" mimetype="application/msword" />
    <type extension=".docx" mimetype="application/msword" />
    <type extension=".exe" mimetype="application/octet-stream" />
    <type extension=".gif" mimetype="image/gif" />
    <type extension=".gtar" mimetype="application/x-gtar" />
    <type extension=".gz" mimetype="application/gzip" />
    <type extension=".h" mimetype="text/plain" />
    <type extension=".htm" mimetype="text/html" />
    <type extension=".html" mimetype="text/html" />
    <type extension=".jar" mimetype="application/java-archive" />
    <type extension=".java" mimetype="text/plain" />
    <type extension=".jpeg" mimetype="image/jpeg" />
    <type extension=".jpg" mimetype="image/jpeg" />
    <type extension=".js" mimetype="application/x-javascript" />
    <type extension=".log" mimetype="text/plain" />
    <type extension=".m3u" mimetype="audio/x-mpegurl" />
    <type extension=".m4a" mimetype="audio/mp4a-latm" />
    <type extension=".m4b" mimetype="audio/mp4a-latm" />
    <type extension=".m4p" mimetype="audio/mp4a-latm" />
    <type extension=".m4u" mimetype="video/vnd.mpegurl" />
    <type extension=".m4v" mimetype="video/x-m4v" />
    <type extension=".mid" mimetype="audio/mid" />
    <type extension=".midi" mimetype="audio/midi" />
    <type extension=".mkv" mimetype="video/*" />
    <type extension=".mov" mimetype="video/quicktime" />
    <type extension=".mp2" mimetype="audio/x-mpeg" />
    <type extension=".mp3" mimetype="audio/mp3" />
    <type extension=".mp4" mimetype="video/mp4" />
    <type extension=".mpc" mimetype="application/vnd.mpohun.certificate" />
    <type extension=".mpe" mimetype="video/mpeg" />
    <type extension=".mpg" mimetype="video/mpeg" />
    <type extension=".mpeg" mimetype="video/mpeg" />
    <type extension=".mpga" mimetype="audio/mpeg" />
    <type extension=".msg" mimetype="application/vnd.ms-outlook" />
    <type extension=".ogg" mimetype="audio/x-ogg" />
    <type extension=".pdf" mimetype="application/pdf" />
    <type extension=".php" mimetype="text/php " />
    <type extension=".png" mimetype="image/png" />
    <type extension=".pps" mimetype="application/vnd.ms-powerpoint" />
    <type extension=".ppt" mimetype="application/vnd.ms-powerpoint" />
    <type extension=".pptx" mimetype="application/vnd.ms-powerpoint" />
    <type extension=".prop" mimetype="text/plain" />
    <type extension=".rar" mimetype="application/x-rar-compressed" />
    <type extension=".rc" mimetype="text/plain" />
    <type extension=".rmvb" mimetype="video/*" />
    <type extension=".rtf" mimetype="application/rtf" />
    <type extension=".sh" mimetype="text/plain" />
    <type extension=".tar" mimetype="application/x-tar" />
    <type extension=".tgz" mimetype="application/x-compressed" />
    <type extension=".txt" mimetype="text/plain" />
    <type extension=".vob" mimetype="video/*" />
    <type extension=".wma" mimetype="audio/x-ms-wma" />
    <type extension=".wav" mimetype="audio/wav" />
    <type extension=".xml" mimetype="text/xml" />
    <type extension=".wmv" mimetype="video/*" />
    <type extension=".wps" mimetype="application/vnd.ms-works" />
    <type extension=".xls" mimetype="application/vnd.ms-excel" />
    <type extension=".xlsx" mimetype="application/vnd.ms-excel" />
    <type extension=".z" mimetype="application/x-compressed" />
    <type extension=".zip" mimetype="application/zip" />
</MimeTypes>

XmlUtils.java

public class XmlUtils {

    private static final String TAG = "XmlUtils";
    
    public static String getMimeType(Context context, String extension) {
        if (extension == null || extension.trim().length() == 0) {
            throw new IllegalArgumentException("extension can not be null or it's length is 0");
        }
        XmlResourceParser parser = context.getResources().getXml(R.xml.mimetypes);
        int eventType = 0;
        try {
            eventType = parser.getEventType();
        } catch (XmlPullParserException e) {
            Log.e(TAG, "XmlPullParserException", e);
            e.printStackTrace();
        }
        while (true) {
            if (eventType == XmlResourceParser.START_TAG) {
                if (parser.getName().equals("type") && extension.equals(parser.getAttributeValue(0))) {
                    return parser.getAttributeValue(1);　　//如果要读取<A>TEXT</A>中的TEXT就使用parser.nextText();
                }
            } else if (eventType == XmlResourceParser.END_DOCUMENT) {
                throw new RuntimeException(extension + " is not support!");
            }
            try {
                eventType = parser.next();
            } catch (Exception e) {
                Log.e(TAG, "", e);
                e.printStackTrace();
            }
        }
    }
}

这里主要使用的是android扩展XmlPullParser的XmlResourceParser