How to kill an application based on the meta-data content

Application scenarios:
During the specific application process on the all-in-one development machine, it is found that all-in-one resource switching and different applications use different resources. Because you need to switch between different signal source Modes
Use different resources. Therefore, the description "meta-data" is used to kill the specified application.

In androidmanifest. XML, the <meta-data> element can be used as a child element and is contained in <activity>, <Application>, <service>, and <Cycler> elements,
However, the methods for reading different parent elements in an application are also different.

My example is:
<Meta-data Android: Name = "androidtv. meidasource. mode" Android: value = 'digit-mode "/>
At the <Application>... </Application> level

OK. It's easy to implement this function. Just go to the code !!

The following code directly implements a kill method for specifying the meta-data process and a method for running an activity based on the package name.

Package COM. skyworth. DTV; import Java. lang. reflect. method; import Java. util. arraylist; import Java. util. list; import android. app. activitymanager; import android. content. componentname; import android. content. context; import android. content. intent; import android. content. PM. applicationinfo; import android. content. PM. packageinfo; import android. content. PM. packagemanager; import android. content. PM. packagemanager. Namenotfoundexception; import android. content. PM. resolveinfo; import android. util. log; public class dtvapphelper {public static final string meta_source_mode = "androidtv. meidasource. mode "; public static final string meta_source_mode_dtv =" DTV "; static final string tag =" dtvappclosehelper "; static method forcestoppackage = NULL; public static void shutdowndtvapps (context CTX) {packagemanager PM = CTX. g Etpackagemanager (); activitymanager AM = (activitymanager) CTX. getsystemservice (context. activity_service); List <string> List = getrunningdtvapps (AM, PM); For (INT I = 0; I <list. size (); I ++) {log. I (TAG, "will stop package name:" + list. get (I); forcestoppackage (AM, list. get (I) ;}} Private Static void forcestoppackage (activitymanager AM, string pkgname) {try {If (forcestoppackage = NULL) {forcestopp Ackage = aM. getclass (). getdeclaredmethod ("forcestoppackage", String. Class);} If (forcestoppackage! = NULL) {forcestoppackage. setaccessible (true); forcestoppackage. invoke (AM, pkgname) ;}} catch (exception e) {log. E (TAG, "forcestoppackage error:" + E) ;}} Private Static list <string> getrunningdtvapps (activitymanager AM, packagemanager pm) {list <string> plist = new arraylist <string> (); List <activitymanager. runningappprocessinfo> applist = aM. getrunningappprocesses (); For (activitymanager. runningappprocess Info appprocess: applist) {string [] pkgnamelist = appprocess. pkglist; // get the package name list int pid = appprocess. PID; For (INT I = 0; I <pkgnamelist. length; I ++) {string pkgname = pkgnamelist [I]; try {applicationinfo AI = PM. getapplicationinfo (pkgname, packagemanager. get_meta_data); If (AI. metadata! = NULL) {string value = AI. metadata. getstring (meta_source_mode); If (meta_source_mode_dtv.equals (value) {log. I (TAG, "packagename:" + pkgname + "process PID:" + PID); plist. add (pkgname) ;}} catch (namenotfoundexception e) {log. E (TAG, "Get meta data is empty") ;}}return plist;} public static void rundtvapps (context CTX, string packagename) {log. I (TAG, "will start packagename:" + packagename); packageinf O Pi = NULL; try {Pi = CTX. getpackagemanager (). getpackageinfo (packagename, 0); intent resolveintent = new intent (intent. action_main, null); resolveintent. setpackage (Pi. packagename); packagemanager pmanager = CTX. getpackagemanager (); List <resolveinfo> apps = pmanager. queryintentactivities (resolveintent, 0); resolveinfo rI = apps. iterator (). next (); If (Ri! = NULL) {packagename = Ri. activityinfo. packagename; string classname = Ri. activityinfo. name; log. I (TAG, "packagename:" + packagename + "classname:" + classname); intent = new intent (intent. action_main); componentname Cn = new componentname (packagename, classname); intent. setcomponent (CN); intent. setflags (intent. flag_activity_new_task); CTX. startactivity (intent) ;}} catch (exception e) {log. E (TAG, "Start activity failed" + E );}}}

The following describes the reading methods for different parent elements (you can split them as needed to facilitate comparison and writing them into a function ):

Void test (context CTX, string packagename, string classname) {/* Application in application */try {applicationinfo appinfo = CTX. getpackagemanager (). getapplicationinfo (packagename, packagemanager. get_meta_data); string MSG = appinfo. metadata. getstring ("mymsg"); log. I (TAG, "message:" + MSG); // todo} catch (exception e) {log. E (TAG, "getapplicationinfo error:" + E);}/* Application in activity */componentname Cn = new componentname (packagename, classname); try {activityinfo info = CTX. getpackagemanager (). getactivityinfo (CN, packagemanager. get_meta_data); string MSG = info. metadata. getstring ("mymsg"); log. I (TAG, "message:" + MSG); // todo} catch (exception e) {log. E (TAG, "getactivityinfo error:" + E);}/* Application in Service */try {serviceinfo info = CTX. getpackagemanager (). getserviceinfo (CN, packagemanager. get_meta_data); string MSG = info. metadata. getstring ("mymsg"); log. I (TAG, "message:" + MSG); // todo} catch (exception e) {log. E (TAG, "getserviceinfo error:" + E);}/* Application in worker er */try {componentname CRN = new componentname (CTX, classname); activityinfo info = CTX. getpackagemanager (). getreceiverinfo (CRN, packagemanager. get_meta_data); string MSG = info. metadata. getstring ("mymsg"); log. I (TAG, "message:" + MSG); // todo} catch (exception e) {log. E (TAG, "getreceiverinfo error:" + E );}}