Android ListView selected item stay highlighted

Question

I have an XML with two ListView  one with a list of clients filled by a select query  lv cli  and the other with the details of the client selected  lv cli det   I would like to keep the client selected in the lv cli while the lv cli det show the details   XML    lt ListView     android id    id cli lista      android layout width  512dp      android layout height  wrap content      android fadeScrollbars  false       gt   lt  ListView gt    lt ListView     android id    id cli lista det      android layout width  512dp      android layout height  wrap content      android layout toRightOf    id cli lista      android fadeScrollbars  false   gt   lt  ListView gt    Java   Cursor cursor   db rawQuery  Select NrCl       Nome From Clientes   null   final ListView t    ListView findViewById R id cli lista   ArrayAdapter lt String gt  myarrayAdapter   new ArrayAdapter lt String gt  this  android R layout simple expandable list item 1  listItems   t setAdapter myarrayAdapter    final ListView td    ListView findViewById R id cli lista detalhe   final ArrayAdapter lt String gt  myarrayAdapter2   new ArrayAdapter lt String gt  this  android R layout simple expandable list item 1  listItems2    t setOnItemClickListener new OnItemClickListener          Override     public void onItemClick AdapterView lt   gt  parent  View view  int position  long id            String item     TextView view  getText   toString            String   strArray   item split                  cli load strArray 0  toString             td setAdapter myarrayAdapter2           listItems2 clear            listItems2 add  Nome      cli getNome             listItems2 add  Morada      cli getMorada             listItems2 add  Localidade      cli getLoca             listItems2 add  C  digo Postal      cli getCp             listItems2 add  Pais      cli getPais             listItems2 add  Nif      cli getNif             listItems2 add  Tel      cli getTel             listItems2 add  Tlm      cli getTlm             listItems2 add  Tipo Pre  o      cli getTipoPvn             listItems2 add  Cond  Pagamento      cli getCpg             listItems2 add  Obs      cli getObs             td setAdapter myarrayAdapter2           myarrayAdapter2 notifyDataSetChanged

User · Answer

You need selector like this    lt selector xmlns android  http   schemas android com apk res android  gt    lt  -- State when a row is being pressed  but hasn t yet been activated  finger down  -- gt   lt item android drawable   color app primary color light  android state pressed  true    gt    lt  -- Used when the view is  activated   -- gt   lt item android drawable   color app primary color  android state activated  true    gt    lt  -- Default   just hangin  out  state  -- gt   lt item android drawable   android color transparent    gt  lt  selector gt    And then set android choiceMode  singleChoice  to your ListView

User · Answer

listView setOnItemClickListener new AdapterView OnItemClickListener              Override         public void onItemClick AdapterView lt   gt  adapterView  View view  int i  long l                 for  int j   0  j  lt  adapterView getChildCount    j                    adapterView getChildAt j  setBackgroundColor Color TRANSPARENT                   change the background color of the selected element             view setBackgroundColor Color LTGRAY         Perhaps you might want to save the current selected element in a global variable using the index i

User · Answer

Simplistic way is if you are using listview in a xml use this attributes on your listview   android choiceMode  singleChoice  android listSelector   your color code    if not using xml by programatically  listview setChoiceMode AbsListView CHOICE MODE SINGLE   listview setSelector android R color holo blue light

User · Answer

please be sure there is no Ripple at your root layout of list view container  add this line to your list view  android listSelector   drawable background listview    here is the  background listview xml  file    lt selector xmlns android  http   schemas android com apk res android  gt   lt item android drawable   color white background  android state pressed  true    gt   lt item android drawable   color primary color  android state focused  false    gt  lt  selector gt    the colors that used in the background listview xml file     lt color name  primary color  gt  cc7e00 lt  color gt   lt color name  white background  gt  ffffffff lt  color gt    after these       clicked item contain orange color until you click another item

User · Answer

To hold the color of listview item when you press it  include the following line in your listview item layout   android background   drawable bg key    Then define bg key xml in drawable folder like this    lt  xml version  1 0  encoding  utf-8    gt   lt selector xmlns android  http   schemas android com apk res android  gt       lt item          android state selected  true          android drawable   color pressed color   gt       lt item         android drawable   color default color    gt   lt  selector gt    Finally  include this in your ListView onClickListener   listView setOnItemClickListener new OnItemClickListener          Override     public void onItemClick AdapterView lt   gt  parent  View view  int position long arg3            view setSelected true                  Anything             This way  only one item will be color-selected at any time  You can define your color values in res values colors xml with something like this    lt  xml version  1 0  encoding  utf-8   gt   lt resources gt       lt color name  pressed color  gt  4d90fe lt  color gt       lt color name  default color  gt  ffffff lt  color gt   lt  resources gt

User · Answer

Use the id instead   This is the easiest method that can handle even if the list is long   public View getView final int position  View convertView  ViewGroup parent           TODO Auto-generated method stub     Holder holder new Holder        View rowView      rowView   inflater inflate R layout list item  null         Handle your items        StringHolder mSelectedItem is a public static variable      if getItemId position   StringHolder mSelectedItem           rowView setBackgroundColor Color LTGRAY         else          rowView setBackgroundColor Color TRANSPARENT             return rowView      And then in your onclicklistener   list setOnItemClickListener new AdapterView OnItemClickListener              Override         public void onItemClick AdapterView lt   gt  adapterView  View view  int i  long l                StringHolder mSelectedItem   catagoryAdapter getItemId i-1               catagoryAdapter notifyDataSetChanged

User · Answer

One way you can do this  is to Keep track of the current selected position in your activity    Override     public void onItemClick AdapterView lt   gt  arg0  View arg1  int position              long arg3            currentPosition   position         lv cli notifyDataSetChanged            Now  be sure you assign an ID to the parent layout  linearLayout  boxLayout  relativeLayout     Whatever you prefer  of your list item   Then in your ListView you can do something Like this   layoutBackground    LinearLayout  convertView findViewById R id layout background    if  YourActivity this currentPosition    position        layoutBackground setBackgroundColor YourActivity this getResources   getColor R color hilight color      else      layoutBackground setBackgroundResource R drawable list item drawable       Basically  you just set the hilight color to the layout as a background when it equals your current selected position  Notice how I set a drawable background resource when the item is not selected  This could be in your case different  since you posted no code   In my case  this drawable is a selector which makes sure the item is hi-lighted when pressed      NOTE  This simple code doesn t use a view-holder  but I really   recommend using one

User · Answer

I found the proper way  It s very simple  In  resource describe following   android choiceMode  singleChoice  android listSelector   666666     or you may specify a resource link instead of color value   Programmatical   listView setSelector Drawable selector   listView setSelector int resourceId   listView setChoiceMode int mode     mode can be one of these  AbsListView CHOICE MODE SINGLE  AbsListView CHOICE MODE MULTIPLE  AbsListView CHOICE MODE NONE  default    AbsListView is the abstract ancestor for the ListView class   P S  manipulations with onItemClick and changing view background are bankrupt  because a view itself is a temporary object  Hence you must not to track a view   If our list is long enough  the views associated with scrolled out items will be removed from hierarchy  and will be recreated when those items will shown again  with cached display options  such as background   So  the view we have tracked is now not an actual view of the item  and changing its background does nothing to the actual item view  As a result we have multiple items selected

User · Answer

From Avinash Kumar Pankaj s example  View v    then at oncreate method  v   new View getActivity       and then onlistitemclick method i wrote  public void onListItemClick ListView listView  View view  int position         long id       v setBackgroundResource 0      view setBackgroundResource R color green      v   view      It worked for me  Thank you   I replaced  v   new View getActivity       to  v   new View this     and the code worked well   It is necessary the xml files  colors  and  bg key  from previous examples too  as well as ListView attribute   android background   drawable bg key   Mauro

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