Android obtains all installed applications and displays them on listview.

First view;

Read the code in detail;

Package COM. taskmanage. file; import Java. util. arraylist; import Java. util. collections; import Java. util. hashmap; import Java. util. iterator; import Java. util. list; import Java. util. map; import android. app. activity; import android. app. progressdialog; import android. content. componentname; import android. content. context; import android. content. intent; import android. content. PM. applicationinfo; import android. conten T. PM. packagemanager; import android. content. PM. resolveinfo; import android. graphics. drawable. drawable; import android.net. uri; import android. OS. build; import android. OS. bundle; import android. OS. handler; import android. OS. message; import android. provider. settings; import android. util. log; import android. view. layoutinflater; import android. view. view; import android. view. viewgroup; import android. widget. abslist View; import android. widget. adapterview; import android. widget. abslistview. onscrolllistener; import android. widget. adapterview. onitemclicklistener; import android. widget. baseadapter; import android. widget. imageview; import android. widget. listview; import android. widget. simpleadapter; import android. widget. textview; public class softactivity extends activity implements runnable, onitemclicklistener {private Static final string scheme = "package"; Private Static final string app_pkg_name_21 = "com. android. settings. applicationpkgname "; Private Static final string app_pkg_name_22 =" PKG "; Private Static final string app_details_package_name =" com. android. settings "; Private Static final string app_details_class_name =" com. android. settings. installedappdetails "; private list <Map <string, Object> List = NULL; Private listview softlist = NULL; private progressdialog PD; private context mcontext; private packagemanager release; private list <resolveinfo> mallapps; @ overrideprotected void oncreate (bundle savedinstancestate) {setcontentview (R. layout. software); settitle ("File Manager"); mcontext = This; mpackagemanager = getpackagemanager (); softlist = (listview) findviewbyid (R. id. softlist); Pd = progressdialog. sh Ow (this, "Please wait .. "," collecting software information... ", true, false); thread = new thread (this); thread. start (); super. oncreate (savedinstancestate);}/*** check the system application and add it to the Application List */private void bindmsg () {// apply the filter condition intent mainintent = new intent (intent. action_main, null); mainintent. addcategory (intent. category_launcher); mallapps = mpackagemanager. queryintentactivities (mainintent, 0); softlist. setadapter (New myadapter (mcon Text, mallapps); softlist. setonitemclicklistener (this); // sort collections by registration. sort (mallapps, new resolveinfo. displaynamecomparator (mpackagemanager) ;}@ overridepublic void run () {bindmsg (); handler. sendemptymessage (0);} private handler = new handler () {public void handlemessage (Message MSG) {PD. dismiss () ;}}; class myadapter extends baseadapter {private context; private list <resolv Einfo> resinfo; private imageview app_icon = NULL; private textview app_tilte = NULL, app_des = NULL; private resolveinfo res; private layoutinflater infater = NULL; Public myadapter (context, list <resolveinfo> resinfo) {This. context = context; this. resinfo = resinfo; infater = (layoutinflater) context. getsystemservice (context. layout_inflater_service);} @ overridepublic int getcount () {return resinfo. s Ize () ;}@ overridepublic object getitem (INT arg0) {return arg0 ;}@ overridepublic long getitemid (INT position) {return position ;}@ overridepublic view getview (INT position, view convertview, viewgroup parent) {// view = NULL; viewholder holder = NULL; If (convertview = NULL | convertview. gettag () = NULL) {convertview = infater. inflate (R. layout. soft_row, null); holder = new viewholder (convertvie W); convertview. settag (holder);} else {// view = convertview; holder = (viewholder) convertview. gettag () ;}// get the application package name, program name, and program icon res = resinfo. get (position); holder. appicon. setimagedrawable (res. loadicon (mpackagemanager); holder. tvapplabel. settext (res. loadlabel (mpackagemanager ). tostring (); holder. tvpkgname. settext (res. activityinfo. packagename + '\ n' + Res. activityinfo. name); Return convertview;/* Co Nvertview = layoutinflater. from (context ). inflate (R. layout. soft_row, null); app_icon = (imageview) convertview. findviewbyid (R. id. IMG); app_tilte = (textview) convertview. findviewbyid (R. id. name); app_des = (textview) convertview. findviewbyid (R. id. DESC); Res = resinfo. get (position); app_icon.setimagedrawable (res. loadicon (mpackagemanager); app_tilte.settext (res. loadlabel (mpackagemanager ). tostring (); app_des.s Ettext (res. activityinfo. packagename + '\ n' + Res. activityinfo. name); Return convertview; * // set the class viewholder {imageview appicon; textview tvapplabel; textview tvpkgname; Public viewholder (view) {This. appicon = (imageview) view. findviewbyid (R. id. IMG); this. tvapplabel = (textview) view. findviewbyid (R. id. name); this. tvpkgname = (textview) view. findviewbyid (R. id. DESC);}/*** click the application to enter System Application Management Interface */@ overridepublic void onitemclick (adapterview <?> Arg0, view arg1, int position, long arg3) {resolveinfo res = mallapps. get (position); string PKG = res. activityinfo. packagename; intent = new intent (); Final int apilevel = build. version. sdk_int; If (apilevel> = 9) {// intent later than Version 2.2. setaction (settings. action_application_details_settings); Uri uri = Uri. fromparts (scheme, PKG, null); intent. setdata (URI);} else {// final string apppkgname = (apilev El = 8? App_pkg_name_22: app_pkg_name_21); intent. setaction (intent. action_view); intent. setclassname (intent, intent); intent. putextra (apppkgname, PKG);} startactivity (intent );}}

Software. xml layout;

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical" android:layout_width="fill_parent"android:layout_height="fill_parent"><ListView     android:layout_width="fill_parent"android:layout_height="fill_parent" android:drawSelectorOnTop="false"android:id="@+id/softlist" /></LinearLayout>

Soft_row.xml layout;

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/vw1"    android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:orientation="horizontal">        <ImageView android:id="@+id/img"        android:layout_width="32dip"        android:layout_margin="4dip"        android:layout_height="32dip"/>    <LinearLayout        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:orientation="vertical">        <TextView android:id="@+id/name"            android:textSize="18sp"            android:textStyle="bold"            android:layout_width="fill_parent"            android:layout_height="wrap_content"/>        <TextView android:id="@+id/desc"            android:textSize="14sp"            android:layout_width="fill_parent"            android:paddingLeft="10dip"            android:layout_height="wrap_content"/>    </LinearLayout></LinearLayout>

Do not forget to add permissions;

<uses-permission android:name="android.permission.READ_PHONE_STATE"/> <uses-permission android:name="android.permission.GET_TASKS"/>