Determine if Android apps are installed, running

<span id="Label3"></p><p><p></p></p><p>This article describes 3 ways to determine if an app is installed on your phone, whether the app is running, and gets the installation intent of an APK file on your PHONE. launch the intent to install the APK directly.<br> <br>/**<br>* Determine if the app is installed<br>*<br>* @param context<br>* @param packagename<br>* @return<br>*/<br>Private Boolean isInstalled (context context, String Packagename) {<br>Boolean hasinstalled = false;<br>Packagemanager pm = Context.getpackagemanager ();<br>List<packageinfo> list = PM<br>. getinstalledpackages (packagemanager.permission_granted);<br>For (packageinfo P:list) {<br>If (packagename! = null && packagename.equals (p.packagename)) {<br>hasinstalled = true;<br>Break<br>}<br>}<br>Return hasinstalled;<br>}<br> <br>/**<br>* Get intent of File installation<br>*<br>* @param file<br>* @return<br>*/<br>Private Intent getfileintent (file File) {<br>Uri uri = Uri.fromfile (file);<br>String type = "application/vnd.android.package-archive";<br>Intent Intent = new Intent ("android.intent.action.VIEW");<br>Intent.addcategory ("android.intent.category.DEFAULT");<br>Intent.addflags (intent.flag_activity_new_task);<br>Intent.setdataandtype (uri, type);<br>Return intent;<br>}<br> <br>/**<br>* Determine if the app is running<br>*<br>* @param context<br>* @param packagename<br>* @return<br>*/<br>Private Boolean isrunning (context context, String Packagename) {<br>Activitymanager am = (activitymanager) context<br>. Getsystemservice (context.activity_service);<br>list<runningappprocessinfo> list = am.getrunningappprocesses ();<br>For (runningappprocessinfo Appprocess:list) {<br>String ProcessName = appprocess.processname;<br>If (processName! = null && processname.equals (packagename)) {<br>Return true;<br>}<br>}<br>Return false;<br>}</p><p><p>Determine if Android apps are installed, running</p></p></span>