Sort out the APN for Android

 

APN Organization

Some time ago, you added the APN setting function for your company project. Now I want to make some preparations for sharing and taking notes.

APN Field

Different mobile phones have different fields for storing APN-related data. The fields shown here are all public parts.

PublicclassAPN { PublicStringid; PublicStringset; // added by myself. The user confirms whether to set it to the default value. PublicString name; // The name displayed. PublicString APN; // Access Point name cmwap/cmnet ....... PublicString MCC; // country ID PublicString MNC; // carrier ID PublicString numeric; // unique identifier of the MCC + MNC operator globally PublicString user; // User Name PublicString password; // Password PublicString server; // Service PublicString proxy; // proxy PublicString port; // Port PublicString mmsport; // SMS Port PublicString mmsproxy; // SMS proxy PublicString mmsc; PublicString authtype; PublicString current; // when = "1", it is displayed PublicString type; // type }

Storage path of APN

1.
View All APN data

PublicUricreateuri = Uri.Parse("Content: // telephony/carriers ");

2.
View the APN data currently in use

Uri preferuri = Uri.Parse("Content: // telephony/carriers/preferapn ");

Increase of APN

/** * Create a new data */ PublicUriaddnewapn (APN ){ Log.I("Apnhelper", "add operations "); Contentresolver = context. getcontentresolver (); Contentvalues =NewContentvalues (); Contentvalues. Put ("name", APN. getname ()); Contentvalues. Put ("APN", APN. getapn ()); Contentvalues. Put ("MCC", APN. getmcc ()); Contentvalues. Put ("MNC", APN. getmnc ()); Contentvalues. Put ("numeric", APN. getnumeric ()); Contentvalues. Put ("proxy", APN. getproxy ()); Contentvalues. Put ("Port", APN. getport ()); Contentvalues. Put ("authtype", APN. getauthtype ()); Contentvalues. Put ("current", APN. getcurrent ()); Contentvalues. Put ("type", APN. GetType ()); Contentvalues. Put ("user", APN. getuser ()); Contentvalues. Put ("server", APN. getserver ()); Contentvalues. Put ("password", APN. GetPassword ()); Contentvalues. Put ("mmsport", APN. getmmsport ()); Contentvalues. Put ("mmsproxy", APN. getmmsproxy ()); Contentvalues. Put ("mmsc", APN. getmmsc ()); Uri newuri = contentresolver. insert (createuri, contentvalues ); Log.I("Apnhelper", "newuri. tostring ():" + newuri. tostring ()); ReturnNewuri; }

Delete APN

/** * DeletesAPN *@ ParamID *@ ReturnSuccessful or not */ PublicbooleanDeleteapn (string ID ){ BooleanFlag =True; APN = NewAPN (); Contentvalues =NewContentvalues (); Contentvalues. Put ("current", APN. getcurrent ()); Contentresolver = context. getcontentresolver (); Try{ Contentresolver. Delete (createuri, "_ id =? ",New String [] {ID }); Log.I("Apnhelper", "delete operation "); }Catch(Nullpointerexception e ){ //Todo: Handle exception E. printstacktrace (); Flag =False; } ReturnFlag; }

APN sets the current default value

/** * Set the default APN *@ ParamID */ PublicintSetdefault (Int ID ){ Log.I("Apnhelper", "execute settings for current default operations "); Contentresolver = context. getcontentresolver (); Contentvalues =NewContentvalues (); Contentvalues. Put ("apn_id", ID ); IntRows = contentresolver. Update (preferapnuri, Contentvalues,Null,Null); Log.I("Apnhelper", "set current value "); ReturnRows; }

 

 

About the APN Process

 

 

 

For setting the current default APN, when comparing the two lists, you should save the APN to be set as the current default one to an object, and then when modifying, obtain all visible APN again, traverse them, find the ID of this APN, and set the current default APN.

 

I think this flowchart is incomplete. However, the complete figure is not completed, and the current default setting is not shown above. When this part of the function is completed, most of the difficulties in determining the entire logic are the default setting.