图片下载工具类：BitmapUtil
http://blog.csdn.net/flying_vip_521/article/details/7656413

GSPUtil


WebService for Android

获取手机ip地址工具类
public class ClassUtils {    /**     * Checks if a class is a subclass of a class with the specified name. Used     * as an instanceOf without having to load the class, useful when trying to     * check for classes that might not be available in the runtime JRE.     *      * @param clazz     *            The class to check     * @param className     *            The class name to look for in the super classes     * @return true if the class extends a class by the specified name.     */    public static boolean extendsClass(final Class<?> clazz, String className) {        Class<?> superClass = clazz.getSuperclass();        while (superClass != null) {            if (superClass.getName().equals(className)) {                return true;            }            superClass = superClass.getSuperclass();        }        return false;    }}


android时时监听log