activty开启关闭工具类详解编程语言

    public class ActivityUtils {   
        /**  
         * 开启新的activity 并且关闭掉自己  
         */   
        public static void startActivityAndFinish(Activity context, Class<?> cls){   
            Intent intent = new Intent(context,cls);   
            context.startActivity(intent);   
            context.finish();   
        }   
           
           
        /**  
         * 开启新的activity   
         */   
        public static void startActivity(Activity context, Class<?> cls){   
            Intent intent = new Intent(context,cls);   
            context.startActivity(intent);   
        }   
    }