Android toolbar show title and subtitle only when AppBarLayout collepsed -


i have activity appbarlayout ,collapsingtoolbarlayout , toolbar. setting title , subtitle code. want toolbar hidden , show when appbar layout collapsed, code working (toolbar hide initially) showing toolbar title , subtitle always. how show title when appbar layout collapse completely

<android.support.design.widget.appbarlayout     android:id="@+id/app_bar"     android:layout_width="match_parent"     android:layout_height="@dimen/app_bar_height"     android:fitssystemwindows="true"     android:theme="@style/apptheme.appbaroverlay">      <android.support.design.widget.collapsingtoolbarlayout         android:id="@+id/toolbar_layout"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:fitssystemwindows="true"         app:titleenabled="false"         app:contentscrim="?attr/colorprimary"         app:layout_scrollflags="scroll|exituntilcollapsed">          <android.support.v7.widget.toolbar             android:id="@+id/toolbar"             android:layout_width="match_parent"             android:layout_height="?attr/actionbarsize"             app:layout_collapsemode="pin"             app:popuptheme="@style/apptheme.popupoverlay" />      </android.support.design.widget.collapsingtoolbarlayout> </android.support.design.widget.appbarlayout>

setting title , subtitle 

 toolbar toolbar = (toolbar) findviewbyid(r.id.toolbar);     setsupportactionbar(toolbar);     getsupportactionbar().setdisplayhomeasupenabled(true);     getsupportactionbar().setdisplayshowhomeenabled(true);     getsupportactionbar().settitle("title");     getsupportactionbar().setsubtitle("sutitle");

enter image description here

a simple appbarlayout.onoffsetchangedlistener should trick using built-in views:

appbarlayout appbarlayout = (appbarlayout) findviewbyid(r.id.app_bar); appbarlayout.addonoffsetchangedlistener(new appbarlayout.onoffsetchangedlistener {     @override     public void onoffsetchanged(appbarlayout appbarlayout, int offset) {             actionbar actionbar = getsupportactionbar();             boolean toolbarcollapsed = math.abs(offset) >= appbarlayout.gettotalscrollrange();             actionbar.settitle(toolbarcollapsed ? yourtitle : "");             actionbar.setsubtitle(toolbarcollapsed ? yoursubtitle : "");         } });

(this code written in c# (xamarin), not java, minor modifications may needed)


Comments

Post a Comment

Popular posts from this blog

routing - AngularJS State management ->load multiple states in one page -

Image
i developing site in angularjs ui-router. have situation on button click need change , load 3 state page , 3 looks image .please me how can load multiple pages. in 1 page you need configure router config this: $stateprovider .state("state1", { url: "/url1", controller: "firstcontroller", views: { view1: { templateurl: "templates/template1.html" }, view2: { templateurl: "templates/template2.html" }, view3: { templateurl: "templates/template3.html" } } }).state("state2", { url: "/url2", controller: "secondcontroller", views: { view1: { templateurl: "templates/template4.html" }, view2: { templateurl: "templates/template5.html" }, view3: { templateurl: "templates/template6.html" } }).state("state3", { ...
Read more

python - GRASS parser() error -

i'm trying use grass on python 2.7, i'm having problems @ setting script on idle, i'm getting error @ parser() function: here script: import os import sys gisbase = os.environ['gisbase'] = 'c:\program files (x86)\grass gis 7.0.1rc1' gisrc = 'c:\grassdata' gisdbase = 'c:\grassdata' location = 'newlocation' mapset = 'tc' ld_library_path = 'c:\program files (x86)\grass gis 7.0.1rc1\lib' path = 'c:\program files (x86)\grass gis 7.0.1rc1\etc';'c:\program files (x86)\grass gis 7.0.1rc1\etc\python';'c:\program files (x86)\grass gis 7.0.1rc1\lib';'c:\program files (x86)\grass gis 7.0.1rc1\bin';'c:\python27';'c:\program files (x86)\grass gis 7.0.1rc1\python27';'c:\program files (x86)\grass gis 7.0.1rc1\msys' pythonlib = 'c:\python27' pythonpath = 'c:\program files (x86)\grass gis 7.0.1rc1\etc\python' sys.path.append(os.path.join(os.environ['...
Read more

Swift game error message -

i following ios game tutorial. cannot figure out wrong here. error on these 2 lines. let newangle = percent * 180 - 180 cannon.zrotation = cgfloat(newangle) * cgfloat(m_pi); 180.0 //error "use of unresolved identifier 'percent'" the tutorial uses: cannon.zrotation = cgfloat(newangle) * cgfloat(m_pi)/ 180.0 but changed error suggested import spritekit class gamescene: skscene { var cannon: skspritenode! var touchlocation:cgpoint = cgpointzero override func didmovetoview(view: skview) { /* setup scene here */ cannon = self.childnodewithname("cannon") as! skspritenode } override func touchesbegan(touches: set<uitouch>, withevent event: uievent?) { /* called when touch begins */ touchlocation = touches.first!.locationinnode(self) } override func touchesmoved(touches: set<uitouch>, withevent event: uievent?) { touchlocation = touches.first!.locationinn...
Read more