xamarin.android - [Xamarin.Forms][Android] Change back and next color in navigation -


i' have navigation page , want override color button , next button ( toolbaritem )

i tried bartextcolor property change color navigation header text.

it's done in ios, i' not able find solution android.

it works title not icons.

here code : 

protected override void onelementpropertychanged(object sender, propertychangedeventargs e) {     base.onelementpropertychanged(sender, e);      var page = this.element navigationpage;     if (page != null && toolbar != null)     {         toolbar.settitletextcolor(color.black.toandroid());          if (toolbar.navigationicon != null)             toolbar.navigationicon.setcolorfilter(color.green.toandroid(), android.graphics.porterduff.mode.multiply);          if (toolbar.overflowicon != null)             toolbar.overflowicon.setcolorfilter(color.green.toandroid(), android.graphics.porterduff.mode.multiply);     }     }

i' have navigation page , want override color button , next button ( toolbaritem )

your next button toolbaritem, defined yourself. won't problem customize it. difficult part lies in button, because offered xamarin.forms. need override navigationpagerenderer change color:

public class mynavigationpagerenderer : navigationpagerenderer {     protected override void onelementchanged(elementchangedeventargs<navigationpage> e)     {         base.onelementchanged(e);         if (e.newelement != null)         {             var navcontroller = (inavigationpagecontroller)e.newelement;             navcontroller.pushrequested += navcontroller_pushrequested;             navcontroller.poprequested += navcontroller_poprequested;         }     }      private void navcontroller_poprequested(object sender, xamarin.forms.internals.navigationrequestedeventargs e)     {         device.starttimer(timespan.frommilliseconds(220), () =>         {             changeiconcolor();             return false;         });     }      private void navcontroller_pushrequested(object sender, xamarin.forms.internals.navigationrequestedeventargs e)     {         changeiconcolor();     }      private void changeiconcolor()     {         int count = this.viewgroup.childcount;          var toolbar = gettoolbar();          if (toolbar.navigationicon != null)         {             var drawable = (toolbar.navigationicon drawerarrowdrawable);             drawable.color = resource.color.material_grey_850;//set navigation icon color here         }     }      private atoolbar gettoolbar()     {         (int = 0; < this.viewgroup.childcount; i++)         {             var child = this.viewgroup.getchildat(i);             if (child atoolbar)             {                 return (atoolbar)child;             }         }          return null;     } }

a little explanation codes above: pushrequest , poprequest fires when push , pop new page navigation page , perfect time customize existing toolbar's navigationicon. first find toolbar using gettoolbar change icon color changeiconcolor.


Comments

Post a Comment

Popular posts from this blog

ubuntu - PHP script to find files of certain extensions in a directory, returns populated array when run in browser, but empty array when run from terminal -

i running os ububtu 16.04. ultimate goal able run php script cron job every minute. here php script located @ /var/www/html/tests/test/index.php : <?php $directorypath = $_server['document_root']."/tests/test/data/"; echo "directorypath: $directorypath<br><br>";//check $imagefilepathsarray = glob($directorypath . "*.{png,gif}", glob_brace); echo "<br><br>imagefilepathsarray: "; print_r($imagefilepathsarray);//check ?> when open php script in browser visiting url my-ip-address/tests/test/index.php , get: directorypath: /var/www/html/tests/test/data/ imagefilepathsarray:array( [0] => /var/www/html/tests/test/data/pic.png [1] => /var/www/html/tests/test/data/pic.gif ) before writing cron job in crontab file, need check if can run anywhere using terminal . opened ubuntu terminal @ /home/ location, , executed in terminal: sudo php /var/www/html/tests/test/index.php i got following out...
Read more

php - How can i create a user dashboard -

today have questions you, want create user dashboard site, include (obviously), users data, example -email -username -and others stuff how can information, , print them in html page? if can, how can these information via php sessions? shuld use session? example, if user login, , start new session ( session_start() ), how can data print in dashboard? should use php "project"? in advice, have day , thank time!
Read more

javascript - How to detect toggling of the fullscreen-toolbar in jQuery Mobile? -

i have jquery mobile page fixed full-screen toolbar, data-tap-toggle enabled. straight under toolbar have positioned banner should slide upwards when toolbar hiding , slide downward when toolbar showing. jquery mobile toggles toolbar applying , removing ui-fixed-hidden class - sadly, can't find in documentation of toolbar widget toggle , hide or show event that. how can detect when toolbar toggled, reposition banner? .banner { position: fixed; background-color: darkseagreen; top: 46px; min-height: 48px; width: 100%; text-align: center; line-height: 48px; } <!doctype html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no"> <link rel="stylesheet" href="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.css"> <script src="https://code.jquery.com/jquery-1....
Read more