Silicon Valley NEWS 3-Parse json data using the API provided by Android, androidjson

Silicon Valley NEWS 3-Parse json data using the API provided by Android, androidjson

NewsCenterPagerBean2 bean2 = new NewsCenterPagerBean2 (); try {JSONObject object = new JSONObject (json); int retcode = object. optInt ("retcode ");..........

1. What is the difference between optXXX and getXXX of a JSONObject?

If the getInt ("key") value does not exist or the type is incorrect, an error is returned.
If the optInt ("key") value does not exist, the default value is returned.

If the getDouble ("key") value does not exist or the type is incorrect, an error is returned.
OptDouble ("key", 0) value does not exist return Default Value