Dialog display app information for Android installation of mobile phone

Recently do feature development need to display the current mobile phone installed app information. Here I use dialog to show. as follows:

As shown above, this dialog shows the app currently installed on the phone, and when clicked on a menu item it displays a locked pattern (e.g., video/camera/contact). This is a design interface that can be locked to the app.

First look at the creation of dialog:

private void Init_create_dialog () {if (null = = Show_app_dialog) {show_app_dialog = New dialog (Getactivity ()) {protected void OnStop () {super.onstop (); Fingerprint_utils.fingerprint_save_lockapp (Getactivity ());}; Show_app_dialog.setcontentview (R.layout.finger_gride_app_choose); Show_app_dialog.settitle (R.string.finger_ Print_set_unlock_app_title); GridView Gvapp = ((GridView) Show_app_dialog.findviewbyid (R.id.gv_app)); final List<fingerprintapplicationinfo > list = Fingerprint_utils.get_lockapplicationinfolist (); Gvapp.setadapter (new Appchooseadapter (list)); Gvapp.setonitemclicklistener (New Adapterview.onitemclicklistener () {public void Onitemclick (adapterview<?> Parent, view view, int position, long id) {Fingerprintapplicationinfo fingerappinfo = (fingerprintapplicationinfo) Parent.getitematposition (position); ResolveInfo appinfo = fingerappinfo.launcher_activity;//charsequence name = Appinfo.loadlabel (Package_manager); Appchooseadapter.viewholder hold = (appchooseadapter.viewholder) view.geTtag (); if (fingerappinfo.locked) {hold.app_icon.setImageResource (0); fingerappinfo.locked = false; Fingerprint_utils.fingerprint_dele_lockapp (appinfo.activityInfo.packageName);//activityinfo.packagename}else{ Hold.app_icon.setImageResource (R.drawable.lock_app_icon); Fingerappinfo.locked = true; Fingerprint_utils.fingerprint_addnew_lockapp (appinfo.activityInfo.packageName);} Selected_str = appinfo.packagename;//if (DEBUG) log.d (TAG, "fingerprintsettingmain:name=" +name+ "; Appinfo.packagename= "+appinfo.packagename);//show_app_dialog.dismiss ();}); * Show_app_dialog.setondismisslistener (new Dialoginterface.ondismisslistener () {public void OnD                Ismiss (Final Dialoginterface Dialog) {Fingerprint_utils.fingerprint_save_lockapp (getactivity ()); }}); */show_app_dialog.getwindow (). Setcloseontouchoutside (True); Show_app_dialog.setcanceledontouchoutside (True) ;}}

And look at its layout file: Finger_gride_app_choose.xml

<?xml version= "1.0" encoding= "Utf-8"? ><gridview xmlns:android= "http://schemas.android.com/apk/res/ Android "android:id=" @+id/gv_app "android:layout_width=" match_parent "android:layout_height=" Match_parent    " android:numcolumns= "3"     android:padding= "10DP"    android:verticalspacing= "10DP"    android: horizontalspacing= "10DP"    android:gravity= "center"    />

is actually a GridView, so the focus of the whole interface is actually the adapter design of the GridView. So look at this adapter:appchooseadapter.

 Class Appchooseadapter extends baseadapter{private list<fingerprintapplicationinfo> Applicationinfos; Private Packagemanager pm;class Viewholder {TextView app_name; ImageView App_icon;    ImageView Locked_icon;}    Public Appchooseadapter (list<fingerprintapplicationinfo> list) {Applicationinfos = list;    } public int GetCount () {return applicationinfos.size ();    } public Object GetItem (int position) {return applicationinfos.get (position);    } public long Getitemid (int position) {return position;        Public View GetView (int position, view view, ViewGroup parent) {//packagemanager pm = Package_manager;        Final Viewholder hold; if (view = null) {if (DEBUG) log.d (TAG, "appchooseadapter: (view = = null) position=" +position); Context context = Parent.getcontext (); view = Layoutinflater.from (context). Inflate (r.layout.item_app_gride, NULL); hold = new Viewholder (); Hold.app_icon = (ImageView) View.findviewbyid (R.ID.IV_icon);//hold.locked_icon = (ImageView) View.findviewbyid (r.id.lock_statu_img); hold.app_name = (TextView) View.findviewbyid (R.id.tv_name); View.settag (hold);} Else{if (DEBUG) log.d (TAG, "Appchooseadapter: (view! = null) position=" +position); hold = (Viewholder) View.gettag ();} Final int curr_position = Position;view.post (new Runnable () {public void run () {//viewholder hold = (viewholder) View.gett AG (); Packagemanager pm = package_manager;if (hold! = null) {Fingerprintapplicationinfo Ainfo = (fingerprintapplicationinfo) Applicationinfos.get (curr_position); String package_name = ainfo.launcher_activity.activityinfo.packagename;//ainfo.app.packagename;if (aInfo.locked) { Hold.app_icon.setImageResource (R.drawable.lock_app_icon); }else{hold.app_icon.setimageresource (0);} Hold.app_name.setText (AInfo.launcher_activity.loadLabel (PM)); Hold.app_icon.setBackgroundDrawable ( AInfo.launcher_activity.loadIcon (PM));        Image.setimagedrawable (AInfo.app.loadIcon (PM));}});    return view; }}

All the basic code has been posted above. Here's a description:

(1) Every time this dialog will be a little bit delayed, how to solve this problem. I have two ways to solve it:

First, load the app information for the phone installation, I'll load it before displaying this dialog, and then just need to pass fingerprint_utils.get_lockapplicationinfolist () You can get it. The Load app information is done using Asynctask. The use of Asynctask is simple, here I only give the code to load the app's information:

    private static Arraylist<fingerprintapplicationinfo> Getinstalledlaunchableapps ( Fingerprintsettingmain.applabelcomparator mcomparator) {        final Intent Mainintent = new Intent (intent.action_main, null);        mainintent.addcategory ( Intent.category_launcher);                Packagemanager pm = Mcomparator.getpackagemanager ();        List List = Pm.queryintentactivities (mainintent, 0);//Query get all installed app                 arraylist<fingerprintapplicationinfo> array = new arraylist< Fingerprintapplicationinfo> ();        arraylist<fingerprintapplicationinfo > array1 = new arraylist<fingerprintapplicationinfo> ();                 int Size = List.size ();        string[] App_dele = all_app_dele_packagename;        string[] Lock_app_dele = lock_app_dele_packagename;        // LOG.D (TAG, "getinstalledlaunchableapps:size=" +size);        boolean has = false;         string locked_packagename = app_locked_packagename!=null?app_locked_ Packagename.tostring ():null;        resolveinfo curr;         for (int i=0; i<size; i++) {            have = false;            curr = (ResolveInfo) list.get (i);             if (null = = Curr) {                 continue;            }            String str = curr.activityinfo.packagename;            if (!wei_xing_install && 0 = = Weixing_package.compareto (str)) {// Detect if installation                 wei_xing_install = true;             }             Iterator Iterator = Array.iterator ();            if (null! = App_ DELE) {                for (int j = 0; j < App_dele.length; J + +) {//Some apps don't need to be shown here, filter out some app                     if (App_dele[j].compareto (str) = = 0) {                         has = true;   &NBSP;&NBSP;&NBsp              }                }            }             if (has) continue;                 fingerprintapplicationinfo app = new Fingerprintapplicationinfo ();                app.launcher_activity = curr;                 if (locked_packagename! = null && locked_packagename.indexof (str) >-1 ) {                    app.locked = true;& nbsp;               }                                 Array.add (APP);                 if (null! = Lock_app_dele) {                     for (int n = 0; n < lock_app_dele.length; n++) {       &N bsp;                if (Lock_app_dele[n].compareto (str) = = 0) {                            has = true;                         }                     }                }                 if (HAS) Continue; &nbsP              array1.add (APP);        }                collections.sort ( Array, mcomparator);        collections.sort (array1, mcomparator);         if (array1 = null) {            unlock_pacakegename_ App_dele = array1;        }        return array;    }

Even if the app information is loaded before the dialog is displayed, there is a long delay when the dialog is displayed because it takes time to load each app's icon and Text_name. So, As in the above code appchooseadapter GetView I used the View.post (new Runnable ()) method to load the displayed information.

(2) How to achieve a click on an app menu option to display a lock on the image above. Look closely at the above source code can be found, here I used ImageView image and background to do. First ImageView background image is used to show the app icon, And ImageView's image shows the picture that is a lock. If locked, this imageview sets the image:

Hold.app_icon.setImageResource (R.drawable.lock_app_icon);

Otherwise:

Hold.app_icon.setImageResource (0);

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

Dialog display app information for Android installation of mobile phone