How to get the information of installed applications in android mobile phone

This article mainly introduces how to obtain the application information installed in the android phone, which has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let's take a look at it.

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/ * whether the application * @ param context * @ param apk_package package name * @ return * / public static boolean isInstallApp (Context context, String apk_package) {PackageInfo packageInfo has been installed Try {packageInfo = context.getPackageManager () .getPackageInfo (apk_package, 0);} catch (NameNotFoundException e) {packageInfo = null; e.printStackTrace () } if (packageInfo! = null) {return true;} return false } / * traverses the specified files in the folder under a path * @ param Path search directory * @ param Extension extension (the suffix of the file type determined) * @ param IsIterative whether to enter the subfolder * @ return * / public static final List GetFiles (String Path, String Extension) Boolean IsIterative) {List apklist = new ArrayList () / / result List try {File [] files = new File (Path). ListFiles (); for (int I = 0; I < files.length; iTunes +) {File f = files [I] If (f.isFile ()) {if (f.getPath () .substring (f.getPath (). Length ()-Extension.length ()) .equals (Extension)) / / determine the extension apklist.add (f.getPath ()) If (! IsIterative) break / / if you do not enter the subset directory, jump out of} else if (f.isDirectory () & & f.getPath (). IndexOf ("/.") = =-1) / / ignore point files (hidden files / folders) GetFiles (f.getPath (), Extension, IsIterative) / / here we begin to recurse}} catch (Exception e) {/ / TODO: handle exception e.printStackTrace ();} return apklist } / * install apk * @ param apk_url * / public static void installApkFromLocalPath (Context context,String apk_url) {try {Intent intent = new Intent (Intent.ACTION_VIEW) according to the local path Intent.setDataAndType (Uri.fromFile (new File (apk_url)), "application/vnd.android.package-archive"); context.startActivity (intent);} catch (Exception e) {/ / TODO: handle exception e.printStackTrace () }} / * Uninstall the application * @ param context * @ param apk_pkg package name * / public static void unInstallApkFromPackage (Context context,String apk_pkg) {try {Intent intent = new Intent (Intent.ACTION_DELETE) Intent.setData (Uri.parse ("package:" + apk_pkg)); context.startActivity (intent);} catch (Exception e) {/ / TODO: handle exception e.printStackTrace () }} / * Open another application according to the package name * @ param context * @ param apk_pkg package name * / public static void openApkFromPackage (Context context,String apk_pkg) {try {Intent intent = new Intent (Intent.ACTION_VIEW) Intent.setComponent (new ComponentName (context, apk_pkg)); context.startActivity (intent);} catch (Exception e) {/ / TODO: handle exception e.printStackTrace () }} Thank you for reading this article carefully. I hope the article "how to get the Information of applications installed in android phones" shared by the editor will be helpful to you. At the same time, I also hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!