Android apps-package install uninstall

1: The package name obtains the environment variables of the package.

You can obtain the resource of the corresponding package based on this variable.

Context authcontext = createpackagecontext (DESC. packagename, 0 );
Icon = authcontext. getresources (). getdrawable (DESC. iconid );

Label = authcontext. getresources (). gettext (DESC. labelid );

 

2: Get app Information Based on APK URI

/*
* Utility method to get application information for a given packageuri
*/
Public static applicationinfo getapplicationinfo (URI packageuri ){
Final string archivefilepath = packageuri. getpath ();
Packageparser = new packageparser (archivefilepath );
File sourcefile = new file (archivefilepath );
Displaymetrics metrics = new displaymetrics ();
Metrics. settodefaults ();
Packageparser. Package PKG = packageparser. parsepackage (sourcefile, archivefilepath, metrics, 0 );
If (PKG = NULL ){
Return NULL;
}
Return PKG. applicationinfo;

APK installed

Public static Boolean ispackagealreadyinstalled (activity context, string pkgname ){
List <packageinfo> installedlist = context. getpackagemanager (). getinstalledpackages (
Packagemanager. get_uninstalled_packages );
Int installedlistsize = installedlist. Size ();
For (INT I = 0; I <installedlistsize; I ++ ){
Packageinfo TMP = installedlist. Get (I );
If (pkgname. inclusignorecase (TMP. packagename )){
Return true;
}
}
Return false;
}

Get app icon and name

Public static view initsnippetforinstalledapp (activity pcontext,
Applicationinfo appinfo, int snippetid ){
View topology nippet = pcontext. findviewbyid (snippetid );
String pkgname = appinfo. packagename;
Packagemanager PM = pcontext. getpackagemanager ();
Charsequence label = appinfo. loadlabel (PM );
Drawable icon = appinfo. loadicon (PM );
(Imageview) using nippet. findviewbyid (R. Id. app_icon). setimagedrawable (icon );
(Textview) extends nippet. findviewbyid (R. Id. app_name). settext (Label );
Return response nippet;
}

 

Install app code

Packagemanager PM = getpackagemanager ();

Installflags | = packagemanager. install_replace_existing;

String installerpackagename = getintent (). getstringextra (
Intent. extra_installer_package_name );
Packageinstallobserver observer = new packageinstallobserver ();
PM. installpackage (mpackageuri, observer, installflags, installerpackagename );

Class packageinstallobserver extends ipackageinstallobserver. Stub {
Public void packageinstalled (string packagename, int returncode ){

}
}

Uninstall an app

Packagedeleteobserver observer = new packagedeleteobserver ();
Getpackagemanager (). deletepackage (mappinfo. packagename, observer, 0 );

Class packagedeleteobserver extends ipackagedeleteobserver. Stub {
Public void packagedeleted (Boolean succeeded ){
Message MSG = mhandler. obtainmessage (uninstall_complete );
MSG. arg1 = succeeded? Succeeded: failed;
Mhandler. sendmessage (MSG );
}
}