Android - ListView displaying different layouts for items -


i'm having listview displays list of items database. using simplecursoradapter.

if (mdiscussionscursor != null && mdiscussionscursor.getcount() > 0) {     madapter = new simplecursoradapter(mcontext, r.layout.home_discussion_row, mdiscussionscursor, from, to, 0);     madapter.setviewbinder(view_binder);     setadapter(madapter);     setonitemclicklistener(this); }

these items chronologically ordered. put separation line between every day, i.e., display items may 1, 2013, title 'may 2, 2013' followed items of day etc.

i assume can take cursor , copy array special cells representing titles days , use method presented here: http://android.amberfog.com/?p=296

however, seems wasteful practice me in both space , time, , wondering maybe can think of more clever. in advance.

you can try sub-classing simplecursoradapter , overriding associated members tutorial

getitemviewtype getviewtypecount getview

if have @ inheritance hierarchies of simplecusrsoradapter , listadapter (listview adapter), you'll see both subclasses of baseadapter, , therefore why possible.

http://developer.android.com/reference/android/widget/simplecursoradapter.html http://developer.android.com/reference/android/widget/listadapter.html http://developer.android.com/reference/android/widget/baseadapter.html

edit

it not cut , dry subclassing , overriding. may need incorporate of code in cursoradapter parent class overrides, , 

bypass calling super.method().

for example, here cursoradapter.java's getview override, may need 

explicitly call bindview()

(ref: http://androidxref.com/4.0.3_r1/xref/frameworks/base/core/java/android/widget/cursoradapter.java

public view getview(int position, view convertview, viewgroup parent) {     if (!mdatavalid) {         throw new illegalstateexception("this should called when cursor valid");     }     if (!mcursor.movetoposition(position)) {         throw new illegalstateexception("couldn't move cursor position " + position);     }     view v;     if (convertview == null) {         v = newview(mcontext, mcursor, parent);     } else {     v = convertview;     }     bindview(v, mcontext, mcursor);     return v; }

to use xref source code repository, go to

http://androidxref.com/

select api version, , in

"full search"

type

objectname.java

and in list right

"in projects"

scroll down , select

"frameworks"

and search (i find direct , effective way ya want).


Comments

Post a Comment

Popular posts from this blog

basic authentication with http post params android -

i doing basic authentication passing username , password , using basicnamevaluepair sending post params response service. my method: public stringbuilder callservicehttppost(string username, string password, string type) { // create new httpclient , post header httpclient httpclient = new defaulthttpclient(); httppost httppost = new httppost(webservice + type); httpresponse response = null; stringbuilder total = new stringbuilder(); try { url url = new url(webservice + type); /*string base64encodedcredentials = base64.encodetostring((username + ":" + password).getbytes(), base64.url_safe | base64.no_wrap);*/ string base64encodedcredentials = "basic " + base64.encodetostring( (username + ":" + password).getbytes(), base64.no_wrap); httppost.setheader("auth...
Read more

vb.net - Virtual Keyboard commands -

i wondering difference between virtual these keyboard commands is: keyeventf_extendedkey , keyeventf_keyup is. everywhere have looked gives me description based off integers , not want know each of them does. you've tagged question vb.net, these have nothing @ vb.net. they're constants defined in windows header files, use win32 api functions. as far difference, can't tell looking @ values. individual values not particularly important, that's why named identifiers used. what's important used , documentation functions tells mean. the first one, keyeventf_extendedkey , used keybdinput structure (which used along e.g. sendinput function) pass information synthesized keyboard input. if flag used, means scan code should interpreted extended key. technically, means scan code preceded prefix byte value 224 (&he0 in hexadecimal notation). the second one, keyeventf_keyup , 1 of flags available use structure. means key being released (going up)...
Read more

How to get multiresult with multicondition in Sql Server -

i need solve this. hopefully can giving me advices. for sample, i've got data : proclib.march 1 first 10 rows flight date depart orig dest miles boarded capacity ----------------------------------------------------------------- 114 01mar94 7:10 lga lax 2475 172 210 202 01mar94 10:43 lga ord 740 151 210 219 01mar94 9:31 lga lon 3442 198 250 622 01mar94 12:19 lga fra 3857 207 250 132 01mar94 15:35 lga yyz 366 115 178 271 01mar94 13:17 lga par 3635 138 250 302 01mar94 20:22 lga 229 105 180 114 02mar94 7:10 lga lax 2475 119 210 202 02mar94 10:43 lga ord 740 120 210 219 02mar94 9:31 lga lon 344...
Read more