How to determine whether an app is system ROM integration in Android

Codenong's style, directly on the code.

Android determines whether an app is system ROM integration:

Import android. app. activity; <br/> Import android. content. PM. applicationinfo; <br/> Import android. content. PM. packageinfo; <br/> Import android. content. PM. packagemanager. namenotfoundexception; <br/> Import android. OS. bundle; <br/> Import android. widget. textview; </P> <p> public class apptypeactivity extends activity {</P> <p> // software type judgment software <br/> // unknown software type <br/> Public static final int unknow_app = 0; <br/> // user software type <Br/> Public static final int user_app = 1; <br/> // System Software <br/> Public static final int system_app = 2; <br/> // system upgrade software <br/> Public static final int system_update_app = 4; <br/> // system + upgrade software <br/> Public static final int system_ref_app = system_app | system_update_app; </P> <p>/** called when the activity is first created. */<br/> @ override <br/> Public void oncreate (bundle savedinstancestate) {<br/> super. Oncreate (savedinstancestate); <br/> setcontentview (R. layout. main); </P> <p> // package name to be judged <br/> string pname = "com. hiapk. marketpho "; <br/> // text output in text <br/> stringbuffer sb = new stringbuffer (); <br/> Sb. append (pname ). append ("is:"); </P> <p> switch (checkapptype (pname) {<br/> case system_ref_app: <br/> // system ROM integration software <br/> Sb. append ("system_ref_app"); <br/> break; </P> <p> case user_app: <br/> // install software <br/> SB. append ("user_app"); <br/> break; </P> <p> default: <br/> // unknown software <br/> Sb. append ("unknow_app"); <br/> break; <br/>}</P> <p> textview TV = (textview) findviewbyid (R. id. textview); <br/> TV. settext (sb. tostring ()); </P> <p >}</P> <p>/** <br/> * check whether the app is integrated with the system ROM. <br/> * @ Param pname <br /> * @ return <br/> */<br/> private int checkapptype (string pname) {<br/> try {<br/> packageinfo pinfo = getpackagemanager (). get Packageinfo (pname, 0); <br/> // system software or System Software Update <br/> If (issystemapp (pinfo) | issystemupdateapp (pinfo )) {<br/> return system_ref_app; <br/>}else {<br/> return user_app; <br/>}</P> <p >}catch (namenotfoundexception E) {<br/> E. printstacktrace (); <br/>}< br/> return unknow_app; <br/>}</P> <p>/** <br/> * Whether it is a system software or an update software of the system software <br/> * @ return <br/> */<br/> Public Boolean issystemapp (packageinfo pinfo) {<br /> Return (pinfo. applicationinfo. Flags & applicationinfo. flag_system )! = 0); <br/>}</P> <p> Public Boolean issystemupdateapp (packageinfo pinfo) {<br/> return (pinfo. applicationinfo. flags & applicationinfo. flag_updated_system_app )! = 0); <br/>}</P> <p> Public Boolean isuserapp (packageinfo pinfo) {<br/> return (! Issystemapp (pinfo )&&! Issystemupdateapp (pinfo); <br/>}</P> <p>}