将已经下载好的第三方库jar文件拷贝在project视图中工程根目录下的libs文件中，然后在jar文件上右键，Add As Library，就会在build.gradle中的dependencies自动添加。
本例中获取天气通过中国天气网和51万年历获取，也许有其他方式来获取，这里定义了接口，统一获取天气的方式，然后在两种方式获取的M中实现（只是方法名，内容稍后）。
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001056s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.074363s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000986s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001149s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000934s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003161s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000829s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003794s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014484s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001092s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 83214 [ RunTime:0.017661s ]
