android实用工具类分享(获取内存/检查网络/屏幕高度/手机分辨率)

代码如下:public class CommonUtil {  public static boolean hasSDCard() {   String status = Environment.getExternalStorageState();  return status.equals(Environment.MEDIA_MOUNTED); }  /**  * 获取最大内存  *   * @return  */ public static long getMaxMemory() {   return Runtime.getRuntime().maxMemory() / 1024; }