android - Redrawing a Fragment after it becomes visible -
i have menufragment extends fragment support package. menufragment can call fragment settingsfragment. in settingsfragment use switch'es enable or disable functionalities. if functionality disabled button specific functionality should not shown in menufragment , if enabled should shown.
my problem oncreate, oncreateview, onresume, etc. arent called when go menufragment after changed settings in settingsfragment. have restart app before changes have made taking effect in menufragment.
is idea set callback settingsfragment menufragment , call invalidate() on menufragment's main content everytime change switch in settingsfragment or there better solution out there?
edit
i tried use callback redraw fragment noticed calling invalidate() nothing. not force view redrawn... im wondering if have replace menufragment menufragment force oncreate called.
the menuactivity:
public class menuactivity extends navigationactivity { private fragmentmanager fragmentmanager = null; private menufragment fragment = null; @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); this.setrequestedorientation(activityinfo.screen_orientation_nosensor); this.fragmentmanager = this.getsupportfragmentmanager(); this.fragment = (menufragment) this.fragmentmanager.findfragmentbytag(fragmenttags.menu.getvalue()); if (savedinstancestate == null) { this.fragment = new menufragment(); this.fragmentmanager.begintransaction().replace(r.id.menu_slide_main_content, this.fragment, fragmenttags.menu.getvalue()).commit(); } } /** * */ @override protected void onresume() { log.v("menu", "onresume called"); super.onresume(); } /** * */ @override protected void onpause() { log.v("menu", "onresume called"); super.onpause(); } } the menufragment:
public class menufragment extends fragment implements ontouchlistener, ondraglistener, dropcallback { private sessionloginpreferences sessionloginpreferences = null; private sessionloginsingleton sessionloginsingleton = null; private sessionconfigpreferences sessionconfigpreferences = null; private circularlayout circleview = null; private imagebutton buttonmeasure = null; private imagebutton buttoncalc = null; private imagebutton buttonprofile = null; private imagebutton buttonrecipe = null; private imagebutton buttondiagrams = null; private imagebutton buttonmeasuredatalist = null; private imagebutton buttonfollower = null; private imagebutton buttonsettings = null; private imagebutton buttonlogout = null; @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); this.sessionloginpreferences = new sessionloginpreferences(this.getactivity()); this.sessionloginsingleton = sessionloginsingleton.getinstance(this.getactivity()); this.sessionconfigpreferences = new sessionconfigpreferences(this.getactivity()); } @override public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate) { this.buttonmeasure = new imagebutton(this.getactivity()); this.buttonmeasure.setlayoutparams(new relativelayout.layoutparams(relativelayout.layoutparams.wrap_content, relativelayout.layoutparams.wrap_content)); this.buttonmeasure.setimageresource(r.drawable.ic_measure); this.buttonmeasure.getbackground().setalpha(0); this.buttonmeasure.setontouchlistener(this); this.buttoncalc = new imagebutton(this.getactivity()); this.buttoncalc.setlayoutparams(new relativelayout.layoutparams(relativelayout.layoutparams.wrap_content, relativelayout.layoutparams.wrap_content)); this.buttoncalc.setimageresource(r.drawable.ic_calculator); this.buttoncalc.getbackground().setalpha(0); this.buttoncalc.setontouchlistener(this); this.buttonprofile = new imagebutton(this.getactivity()); this.buttonprofile.setlayoutparams(new relativelayout.layoutparams(relativelayout.layoutparams.wrap_content, relativelayout.layoutparams.wrap_content)); this.buttonprofile.setimageresource(r.drawable.ic_profile); this.buttonprofile.getbackground().setalpha(0); this.buttonprofile.setontouchlistener(this); this.buttonrecipe = new imagebutton(this.getactivity()); this.buttonrecipe.setlayoutparams(new relativelayout.layoutparams(relativelayout.layoutparams.wrap_content, relativelayout.layoutparams.wrap_content)); this.buttonrecipe.setimageresource(r.drawable.ic_scanner); this.buttonrecipe.getbackground().setalpha(0); this.buttonrecipe.setontouchlistener(this); this.buttondiagrams = new imagebutton(this.getactivity()); this.buttondiagrams.setlayoutparams(new relativelayout.layoutparams(relativelayout.layoutparams.wrap_content, relativelayout.layoutparams.wrap_content)); this.buttondiagrams.setimageresource(r.drawable.ic_diagrams); this.buttondiagrams.getbackground().setalpha(0); this.buttondiagrams.setontouchlistener(this); this.buttonmeasuredatalist = new imagebutton(this.getactivity()); this.buttonmeasuredatalist.setlayoutparams(new relativelayout.layoutparams(relativelayout.layoutparams.wrap_content, relativelayout.layoutparams.wrap_content)); this.buttonmeasuredatalist.setimageresource(r.drawable.ic_list); this.buttonmeasuredatalist.getbackground().setalpha(0); this.buttonmeasuredatalist.setontouchlistener(this); this.buttonfollower = new imagebutton(this.getactivity()); this.buttonfollower.setlayoutparams(new relativelayout.layoutparams(relativelayout.layoutparams.wrap_content, relativelayout.layoutparams.wrap_content)); this.buttonfollower.setimageresource(r.drawable.ic_follower); this.buttonfollower.getbackground().setalpha(0); this.buttonfollower.setontouchlistener(this); this.buttonsettings = new imagebutton(this.getactivity()); this.buttonsettings.setlayoutparams(new relativelayout.layoutparams(relativelayout.layoutparams.wrap_content, relativelayout.layoutparams.wrap_content)); this.buttonsettings.setimageresource(r.drawable.ic_settings); this.buttonsettings.getbackground().setalpha(0); this.buttonsettings.setontouchlistener(this); this.buttonlogout = new imagebutton(this.getactivity()); this.buttonlogout.setlayoutparams(new relativelayout.layoutparams(relativelayout.layoutparams.wrap_content, relativelayout.layoutparams.wrap_content)); this.buttonlogout.setimageresource(r.drawable.ic_logout); this.buttonlogout.getbackground().setalpha(0); this.buttonlogout.setontouchlistener(this); string email = this.getemail(); map<string, boolean> config = this.sessionconfigpreferences.getconfigdetails(email); list<view> views = new arraylist<view>(); views.add(this.buttonmeasure); views.add(this.buttonprofile); views.add(this.buttonsettings); views.add(this.buttonlogout); if(config.get(globals.config_calc)) { views.add(this.buttoncalc); } if(config.get(globals.config_recipe)) { views.add(this.buttonrecipe); } if(config.get(globals.config_diagrams)) { views.add(this.buttondiagrams); } if(config.get(globals.config_list)) { views.add(this.buttonmeasuredatalist); } if(config.get(globals.config_follower)) { views.add(this.buttonfollower); } this.circleview = new circularlayout(this.getactivity(), this, 250, views); this.circleview.setondraglistener(this); return this.circleview; } @override public void onviewcreated(view view, @nullable bundle savedinstancestate) { super.onviewcreated(view, savedinstancestate); } /** * */ @override public void onresume() { log.v("menufragment", "onresume called"); super.onresume(); } /** * */ @override public void onpause() { log.v("menufragment", "onresume called"); super.onpause(); } @override public boolean ontouch(view view, motionevent event) { switch (event.getaction()) { case motionevent.action_down : { clipdata data = clipdata.newplaintext("", ""); imagebutton imagebutton = (imagebutton)view; view.dragshadowbuilder shadowbuilder = new view.dragshadowbuilder(imagebutton); view.startdrag(data, shadowbuilder, view, 0); view.setvisibility(view.invisible); } break; case motionevent.action_up: { view.performclick(); view.setvisibility(view.visible); } break; } return true; } @override public boolean ondrag(view view, dragevent event) { switch(event.getaction()) { case dragevent.action_drop : { view sourceview = (view) event.getlocalstate(); float sourcex = sourceview.getx(); float sourcey = sourceview.gety(); float dropx = event.getx() - (sourceview.getwidth() / 2); float dropy = event.gety() - (sourceview.getheight() / 2); sourceview.setx(dropx); sourceview.sety(dropy); sourceview.setvisibility(view.visible); translateanimation animation = new translateanimation(dropx - sourcex, 0, dropy - sourcey, 0); animation.setduration(300); sourceview.startanimation(animation); sourceview.setx(sourcex); sourceview.sety(sourcey); } break; } return true; } @override public boolean ondrop(view view, dragevent event) { switch(event.getaction()) { case dragevent.action_drop : { view sourceview = (view)event.getlocalstate(); sourceview.setvisibility(view.visible); if(sourceview.equals(this.buttonmeasure)) { this.performnfcresult(); } else if(sourceview.equals(this.buttoncalc)) { this.performcalc(); } else if(sourceview.equals(this.buttonprofile)) { this.performprofile(); } else if(sourceview.equals(this.buttonrecipe)) { this.performrecipe(); } else if(sourceview.equals(this.buttondiagrams)) { this.performdiagrams(); } else if(sourceview.equals(this.buttonmeasuredatalist)) { this.performmeasuredatalist(); } else if(sourceview.equals(this.buttonfollower)) { this.performfollower(); } else if(sourceview.equals(this.buttonsettings)) { this.performsettings(); } else if(sourceview.equals(this.buttonlogout)) { this.performlogout(); } } break; } return true; } private void performnfcresult() { intent newintent = new intent(this.getactivity(), measuredataactivity.class); newintent.putextra(globals.key_nfc, false); this.startactivity(newintent); } private void performcalc() { intent newintent = new intent(this.getactivity(), calcactivity.class); this.startactivity(newintent); } private void performprofile() { intent newintent = new intent(this.getactivity(), profileactivity.class); this.startactivity(newintent); } private void performrecipe() { intent newintent = new intent(this.getactivity(), recipeactivity.class); this.startactivity(newintent); } private void performdiagrams() { intent newintent = new intent(this.getactivity(), diagramsactivity.class); this.startactivity(newintent); } private void performmeasuredatalist() { intent newintent = new intent(this.getactivity(), measuredatalistactivity.class); this.startactivity(newintent); } private void performfollower() { intent newintent = new intent(this.getactivity(), followeractivity.class); this.startactivity(newintent); } private void performsettings() { intent newintent = new intent(this.getactivity(), settingsactivity.class); this.startactivity(newintent); } private void performlogout() { if(this.sessionloginpreferences.isloggedin()) { this.sessionloginpreferences.logout(); } else if(this.sessionloginsingleton.isloggedin()) { sessionloginsingleton.getinstance(null).logout(); } this.getactivity().finish(); } private string getemail() { string email = null; if (this.sessionloginpreferences.isloggedin()) { map<string, string> userdata = this.sessionloginpreferences.getuserdetails(); email = userdata.get(globals.key_email); } else if (this.sessionloginsingleton.isloggedin()) { email = this.sessionloginsingleton.getemail(); } return email; } } the settingsactivity
public class settingsactivity extends navigationactivity { private fragmentmanager fragmentmanager = null; private settingsfragment fragment = null; @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); this.fragmentmanager = this.getsupportfragmentmanager(); this.fragment = (settingsfragment) this.fragmentmanager.findfragmentbytag(fragmenttags.settings.getvalue()); if (savedinstancestate == null) { this.fragment = new settingsfragment(); this.fragmentmanager.begintransaction().replace(r.id.menu_slide_main_content, this.fragment, fragmenttags.settings.getvalue()).commit(); } } } the settingsfragment
public class settingsfragment extends fragment implements oncheckedchangelistener { private sessionconfigpreferences sessionconfigpreferences = null; private sessionloginpreferences sessionloginpreferences = null; private sessionloginsingleton sessionloginsingleton = null; private switch switchdiagrams = null; private switch switchrecipe = null; private switch switchcalc = null; private switch switchlist = null; private switch switchfollower = null; @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); this.setretaininstance(true); this.getactivity().getwindow().setsoftinputmode(windowmanager.layoutparams.soft_input_state_always_hidden); this.sessionconfigpreferences = new sessionconfigpreferences(this.getactivity()); this.sessionloginpreferences = new sessionloginpreferences(this.getactivity()); this.sessionloginsingleton = sessionloginsingleton.getinstance(this.getactivity()); this.sethasoptionsmenu(true); } @override public view oncreateview(layoutinflater inflater, @nullable viewgroup container, @nullable bundle savedinstancestate) { return inflater.inflate(r.layout.activity_settings_fragment, container, false); } @override public void onviewcreated(view view, @nullable bundle savedinstancestate) { super.onviewcreated(view, savedinstancestate); this.switchdiagrams = (switch) view.findviewbyid(r.id.settings_switch_diagrams); this.switchdiagrams.setoncheckedchangelistener(this); this.switchrecipe = (switch) view.findviewbyid(r.id.settings_switch_recipe); this.switchrecipe.setoncheckedchangelistener(this); this.switchcalc = (switch) view.findviewbyid(r.id.settings_switch_calc); this.switchcalc.setoncheckedchangelistener(this); this.switchlist = (switch) view.findviewbyid(r.id.settings_switch_measuredata_list); this.switchlist.setoncheckedchangelistener(this); this.switchfollower = (switch) view.findviewbyid(r.id.settings_switch_follower); this.switchfollower.setoncheckedchangelistener(this); } @override public void onresume() { super.onresume(); string email = getemail(); map<string, boolean> config = this.sessionconfigpreferences.getconfigdetails(email); this.switchdiagrams.setchecked(config.get(globals.config_diagrams)); this.switchrecipe.setchecked(config.get(globals.config_recipe)); this.switchcalc.setchecked(config.get(globals.config_calc)); this.switchlist.setchecked(config.get(globals.config_list)); this.switchfollower.setchecked(config.get(globals.config_follower)); } @override public boolean onoptionsitemselected(menuitem item) { switch (item.getitemid()) { case android.r.id.home: this.getactivity().finish(); return true; default: return super.onoptionsitemselected(item); } } @override public void oncheckedchanged(compoundbutton view, boolean checked) { string email = getemail(); switch(view.getid()) { case r.id.settings_switch_diagrams: this.sessionconfigpreferences.configure(email, globals.config_diagrams, checked); break; case r.id.settings_switch_recipe: this.sessionconfigpreferences.configure(email, globals.config_recipe, checked); break; case r.id.settings_switch_calc: this.sessionconfigpreferences.configure(email, globals.config_calc, checked); break; case r.id.settings_switch_measuredata_list: this.sessionconfigpreferences.configure(email, globals.config_list, checked); break; case r.id.settings_switch_follower: this.sessionconfigpreferences.configure(email, globals.config_follower, checked); break; } } private string getemail() { string email = null; if (this.sessionloginpreferences.isloggedin()) { map<string, string> userdata = this.sessionloginpreferences.getuserdetails(); email = userdata.get(globals.key_email); } else if (this.sessionloginsingleton.isloggedin()) { email = this.sessionloginsingleton.getemail(); } return email; } }
i guess following best solution kind of problem:
/** * */ @override public void onbackpressed() { intent intent = new intent(this, menuactivity.class); intent.addflags(intent.flag_activity_clear_top); intent.addflags(intent.flag_activity_clear_task); intent.addflags(intent.flag_activity_new_task); this.startactivity(intent); this.finish(); } adding code above settingsactivity causes old menuactivity killed , starts new menuactivity needs add menufragment , oncreate, oncreateview etc. called view acts got updated.
this works api level >= 5.0
older api's should use:
@override public boolean onkeydown(int keycode, keyevent event) { if (keycode == keyevent.keycode_back) { intent intent = new intent(this, menuactivity.class); intent.addflags(intent.flag_activity_clear_top); intent.addflags(intent.flag_activity_clear_task); intent.addflags(intent.flag_activity_new_task); this.startactivity(intent); this.finish(); return true; } return super.onkeydown(keycode, event); } let me know if isnt solution. if please provide informations why.
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