Using xamarin forms and we are adding ability to switch between Dark-Light mode. All is good however the first page of the app in android whatever I do the status bar color wont change.
I guess that in the android project I have to call SetTheme(...) before OnCreate.
Or Am I missing something here?
Question
How do you set the status bar color depending on theme? code below does not change once the android has loaded
public void SetStatusBarColor(System.Drawing.Color color, bool darkStatusBarTint)
{
var activity = Platform.CurrentActivity;
var window = activity.Window;
window?.AddFlags(WindowManagerFlags.DrawsSystemBarBackgrounds);
window?.ClearFlags(WindowManagerFlags.TranslucentStatus);
window?.SetStatusBarColor(color.ToPlatformColor());
var flag = (StatusBarVisibility)SystemUiFlags.LightStatusBar;
if (window != null)
{
window.DecorView.SystemUiVisibility = darkStatusBarTint ? flag : 0;
}
}
Suggestions?
thanks
Try this:
private void SetStatusBarColor(System.Drawing.Color color, bool darkStatusBarTint)
{
var activity = Platform.CurrentActivity;
var window = activity.Window;
if (window != null)
{
window.AddFlags(WindowManagerFlags.DrawsSystemBarBackgrounds);
window.ClearFlags(WindowManagerFlags.TranslucentStatus);
window.SetStatusBarColor(color.ToPlatformColor());
StatusBarVisibility flags = default;
if (darkStatusBarTint)
flags |= (StatusBarVisibility)SystemUiFlags.LightStatusBar;
else
flags &= ~(StatusBarVisibility)SystemUiFlags.LightStatusBar;
window.DecorView.SystemUiVisibility = flags;
}
}
Or
private void SetStatusBarColor(System.Drawing.Color color, bool darkStatusBarTint)
{
var activity = Platform.CurrentActivity;
var window = activity.Window;
if (window != null)
{
window.AddFlags(WindowManagerFlags.DrawsSystemBarBackgrounds);
window.ClearFlags(WindowManagerFlags.TranslucentStatus);
window.SetStatusBarColor(color.ToPlatformColor());
window.DecorView.SystemUiVisibility = darkStatusBarTint
? (StatusBarVisibility)SystemUiFlags.LightStatusBar
: StatusBarVisibility.Visible;
}
}
Both functions work.
You can update the StatusBar color in the MainActivity.OnCreate method and also listen to the App.Current.RequestedThemeChanged event.
public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
{
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
Xamarin.Essentials.Platform.Init(this, savedInstanceState);
global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
LoadApplication(new App());
ApplyStatusBarColor(App.Current.RequestedTheme);
App.Current.RequestedThemeChanged += (s, e) => ApplyStatusBarColor(e.RequestedTheme);
}
private void ApplyStatusBarColor(Xamarin.Forms.OSAppTheme osAppTheme)
{
if (osAppTheme == Xamarin.Forms.OSAppTheme.Dark)
SetStatusBarColor(Xamarin.Forms.Color.Blue, false);
else
SetStatusBarColor(Xamarin.Forms.Color.Yellow, true);
}
}
Related
I was creating a custom control it is more like TabPage, where it's derive from View, containing a list of CSMenuItems and foreach menuItem is derived from BaseMenuItem and has menuContent that is derived from ContentView, like this :
• CSView
• CSMenuItem
• MenuContent
• Content
• CSMenuItem
• MenuContent
• Content
My problem is whenever I Change the properties value of MenuContent in the xaml file, the propertyChanged won't fire and MenuContent won't update. I am pretty sure the problem is in my renderers. Is there any way to update the child element in custom renderer?
Here are my codes for controls:
class CSView : View
{
public CSView ()
{
var items = new ObservableCollection <CSMenuItem>();
items.CollectionChanged += OnItemsChanged;
Items = items;
}
public static readonly BindableProperty ItemsProperty = BindableProperty.Create ("Items", typeof (IList <CSMenuItem>), typeof (CSView));
void OnItemsChanged (object sender, NotifyCollectionChangedEventArgs e)
{
foreach (CSMenuItem item in e.NewItems)
item.Parent = this;
// Maybe setting the item parent to this would be good?
// cause whenever new item is add I want its parent to be this.
// Correct me if im wrong.
}
public IList <CSMenuItem> Items
{
get => (IList <CSMenuItem>)GetValue (ItemsProperty);
set => SetValue (ItemsProperty, value);
}
class CSMenuItem : BaseMenuItem
{
public CSMenuItem()
{
}
public static readonly BindableProperty TitleProperty = BindableProperty.Create("Title", typeof(string), typeof(CSMenuItem), default);
public static readonly BindableProperty ContentProperty = BindableProperty.Create("Content", typeof(MenuContent), typeof(CSMenuItem));
public string Title
{
get => (string)GetValue (TitleProperty);
set => SetValue (TitleProperty, value);
}
public MenuContent Content
{
get => (MenuContent)GetValue (ContentProperty);
set => SetValue (ContentProperty, value);
}
}
class MenuContent : ContentView
{
public MenuContent ()
{
}
public static readonly BindableProperty TitleProperty = BindableProperty.Create ("Title", typeof (string), typeof (MenuContent));
public string Title
{
get => (string)GetValue (TitleProperty);
set => SetValue (TitleProperty, value);
}
}
and for renderers :
class CSViewRenderer : ViewRenderer<CSView, FrameLayout>, NavigationBarView.IOnItemSelectedListener
{
...
protected override void OnElementChanged (ElementChangedEventArgs <CSView> e)
{
if (e.OldElement != null)
UnhandleEvents (e.OldElement);
if (e.NewElement != null)
{
if (Control == null)
SetNativeControl (_control);
HandleEvents (e.NewElement)
}
}
void HandleEvents (CSView element)
=> element.PropertyChanged += OnElementPropertyChanged;
void UnhandleEvents (CSView element)
=> element.PropertyChanged -= OnElementPropertyChanged;
}
/// this is where the issue came from
class CSMenuItemRender : AbsItemRenderer
{
...
protected override View CreateNativeControl ()
{
_base = new LinearLayout (Context);
_toolBar = new ToolBar (Context)
_content = Platform.CreateRendererWithContext (Element.Content, Context); // where Element is type of MenuItem
_toolBar.Title = Element.Content.Title;
_base.Orientation = Orientation.Vertical;
_base.AddView (_toolBar, new LinearLayout.LayoutParams (-1, -2);
_base.AddView (_content.View, new LinearLayout.LayoutParams (-1, -2);
ElementRendererUtil.FitElement (Context, _base, _content);
Platform.SetRenderer (Element.Content, _content);
_content.ElementChanged += OnRendererElementChanged;
return _base;
}
void OnElementChanged (ElementChangedEventArgs <CSMenuItem> e)
{
if (e.OldElement != null)
UnhandleEvents (e.OldElement);
if (e.NewElement != null)
{
if (Control == null)
SetNativeControl (this)
HandleEvents (e.NewElement);
}
}
void OnRendererElementChanged (object sender, VisualElementChangedEventArgs e)
{
if (e.OldElement != null)
e.OldElement.PropertyChanged -= OnRendererElementPropertyChanged;
if (e.NewElement != null)
e.NewElement.PropertyChanged += OnRendererElementPropertyChanged;
}
void OnRendererElementPropertyChanged (object sender, PropertyChangedEventArgs e)
{
var menuContent = (MenuContent)sender;
if (e.PropertyName == MenuContent.TitleProperty.PropertyName)
_toolBar.Title = menuContent.Title;
else if (e.PropertyName == MenuContent.ContentProperty.PropertyName)
_content.Tracker.UpdateLayout ();
}
void HandleEvents (CSMenuItem element)
=> element.PropertyChanged += OnElementPropertyChanged;
void UnhandleEvents (CSMenuItem element)
=> element.PropertyChanged -= OnElementPropertyChanged;
}
I was able to change the MenuContent properties like Title when changing the derive type to Element, like this:
class MenuContent : Element
And setting its parent to CSMenuItem, like this :
public MenuContent Content
{
...
set {
if (value.Parent != this)
value.Parent = this;
SetValue (ContentProperty, value);
}
}
but still the Content property of MenuContent won't update when the value is changed. What I want is to update the MenuContent what ever the value changed in xaml file and to know why the propertyChanged won't fire.
Sorry for my bad English, hope you understand. May the Almighty Bless You😇 Stay safe.
so I have an application that is as follows:
login page where the user enters his credentials and can access the main app if his credentials are correct. and if he checks the remember me checkbox, his username and password will be saved in shared preferences so that he can directly go to the main app in the second time.
the main app has a tabbed layout with a viewpager. in one of the tabs, which is a fragment, I use a recyclerview to display data, that I get from a database, in rows.
now in each row there is a reply button that will show details corresponding to each row when clicked. the details will be shown in a new fragment.
so the point is that I managed to replace the tab's fragment with the new fragment using this code in the recyclerview's adapter:
public class recyclerviewAdapter : RecyclerView.Adapter
{
// Event handler for item clicks:
public event EventHandler<int> ItemClick;
List <summary_request> summary_Requests=new List<summary_request>();
//Context context;
public readonly stores_fragment context;
public recyclerviewAdapter(stores_fragment context, List<summary_request> sum_req)
{
this.context = context;
summary_Requests = sum_req;
}
public override RecyclerView.ViewHolder
OnCreateViewHolder(ViewGroup parent, int viewType)
{
View itemView = LayoutInflater.From(parent.Context).
Inflate(Resource.Layout.recycler_view_data, parent, false);
recyclerview_viewholder vh = new recyclerview_viewholder(itemView, OnClick);
return vh;
}
public override void
OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
{
recyclerview_viewholder vh = holder as recyclerview_viewholder;
vh.by_user.Text = summary_Requests[position].By;
vh.warehousename.Text = summary_Requests[position].warehousename;
vh.project.Text = summary_Requests[position].project;
vh.operations_note.Text = summary_Requests[position].destination_Note;
vh.source_Note.Text = summary_Requests[position].source_Note;
vh.stockType.Text = summary_Requests[position].stockType;
vh.requestStatus.Text = summary_Requests[position].requestStatus;
vh.reply.Click += delegate
{
summary_detail_req fragment = new summary_detail_req();
var fm = context.FragmentManager.BeginTransaction();
fm.Replace(Resource.Id.frameLayout1, fragment);
fm.AddToBackStack(null);
fm.Commit();
int nb = context.FragmentManager.BackStackEntryCount;
Toast.MakeText(context.Context, nb.ToString(), ToastLength.Long).Show();
};
}
private void Reply_Click(object sender, EventArgs e)
{
Toast.MakeText(context.Context, "reply" , ToastLength.Long).Show();
}
public override int ItemCount
{
get { return summary_Requests.Count; }
}
// Raise an event when the item-click takes place:
void OnClick(int position)
{
if (ItemClick != null)
ItemClick(this, position);
}
}
but my context.FragmentManager.BackStackEntryCount remain zero! I don't get it. in my main activity, I am using this code for the backpress function:
stores_fragment.recyclerviewAdapter adapter;
public override void OnBackPressed()
{
string userName = pref.GetString("Username", String.Empty);
string password = pref.GetString("Password", String.Empty);
if (userName != String.Empty || password != String.Empty && adapter.context.FragmentManager.BackStackEntryCount == 0)
{
this.FinishAffinity();
}
else
base.OnBackPressed();
}
but i'm not getting what i want. this function is getting me out of the whole app.the first part of the if statement is because without it, when the I press the back button from the main activity it takes me back to the login page and I don't want that.
my question is what should I do to manage my fragments and the backpress function?
thanks in advance.
so the point is that I managed to replace the tab's fragment with the new fragment using this code in the recyclerview's adapter
According to your description, you want to open another fragment from recyclerview Button.click, if yes, please take a look the following code:
on OnBindViewHolder
int selectedindex;
// Fill in the contents of the photo card (invoked by the layout manager):
public override void
OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
{
selectedindex =position;
PhotoViewHolder vh = holder as PhotoViewHolder;
// Set the ImageView and TextView in this ViewHolder's CardView
// from this position in the photo album:
vh.Image.SetImageResource(mPhotoAlbum[position].PhotoID);
vh.Caption.Text = mPhotoAlbum[position].Caption;
vh.btnreply.Click += Btnreply_Click;
}
To show detailed activity. MainActivity is the current activity for recyclerview.
private void Btnreply_Click(object sender, EventArgs e)
{
Showdetailed(selectedindex);
}
private void Showdetailed(int position)
{
var intent = new Intent();
intent.SetClass(MainActivity.mac, typeof(DetailsActivity));
intent.PutExtra("selectedid", position);
MainActivity.mac.StartActivity(intent);
}
The detailedactivity.cs:
public class DetailsActivity : Activity
{
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Create your application here
var index = Intent.Extras.GetInt("selectedid", 0);
var details = DetailsFragment.NewInstance(index); // Details
var fragmentTransaction = FragmentManager.BeginTransaction();
fragmentTransaction.Add(Android.Resource.Id.Content, details);
fragmentTransaction.Commit();
}
}
The DetailsFragment.cs:
public class DetailsFragment : Fragment
{
public int ShownPlayId => Arguments.GetInt("selectedid", 0);
public static DetailsFragment NewInstance(int index)
{
var detailsFrag = new DetailsFragment { Arguments = new Bundle() };
detailsFrag.Arguments.PutInt("selectedid", index);
return detailsFrag;
}
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
// Use this to return your custom view for this Fragment
// return inflater.Inflate(Resource.Layout.YourFragment, container, false);
if (container == null)
{
// Currently in a layout without a container, so no reason to create our view.
return null;
}
var scroller = new ScrollView(Activity);
var text = new TextView(Activity);
var padding = Convert.ToInt32(TypedValue.ApplyDimension(ComplexUnitType.Dip, 4, Activity.Resources.DisplayMetrics));
text.SetPadding(padding, padding, padding, padding);
text.TextSize = 24;
Photo photo =PhotoAlbum.mBuiltInPhotos[ShownPlayId];
text.Text = photo.Caption;
scroller.AddView(text);
return scroller;
}
}
About implementing fragment, you can take a look:
https://learn.microsoft.com/en-us/samples/xamarin/monodroid-samples/fragmentswalkthrough/
I need my web view to be tappable and scrolable. Once I implement on touch the scroll doesnt work. This way i managed to get it working however now i dont know how to make the web view tappable? the ButtonPress does nothing and if i use Move then i am just scrolling
This my my render in mu droid project
class ExtendedWebViewClient : WebViewClient
{
WebView _webView;
public async override void OnPageFinished(WebView view, string url)
{
try
{
_webView = view;
if (_xwebView != null)
{
view.Settings.JavaScriptEnabled = true;
await Task.Delay(100);
string result = await _xwebView.EvaluateJavaScriptAsync("(function(){return document.body.scrollHeight;})()");
_xwebView.HeightRequest = Convert.ToDouble(result);
}
base.OnPageFinished(view, url);
}
catch (Exception ex)
{
Console.WriteLine($"{ex.Message}");
}
}
public override bool ShouldOverrideUrlLoading(Android.Webkit.WebView view, IWebResourceRequest request)
{
return true;
}
}
protected override void OnElementChanged(ElementChangedEventArgs<Xamarin.Forms.WebView> e)
{
base.OnElementChanged(e);
_xwebView = e.NewElement as ExtendedWebView;
_webView = Control;
if (e.OldElement == null)
{
_webView.SetWebViewClient(new ExtendedWebViewClient());
}
if (e.OldElement != null)
{
Control.Touch -= ControlOnTouch;
Control.ScrollChange -= ControlOnScrollChange;
}
if (e.NewElement != null)
{
Control.Touch += ControlOnTouch;
Control.ScrollChange += ControlOnScrollChange;
}
}
private void ControlOnScrollChange(object sender, ScrollChangeEventArgs scrollChangeEventArgs)
{
if (scrollChangeEventArgs.ScrollY > 0 && scrollChangeEventArgs.OldScrollY == 0)
{
Control.Parent.RequestDisallowInterceptTouchEvent(true);
}
}
private void ControlOnTouch(object sender, Android.Views.View.TouchEventArgs e)
{
// Executing this will prevent the Scrolling to be intercepted by parent views
switch (e.Event.Action)
{
case MotionEventActions.Down:
Control.Parent.RequestDisallowInterceptTouchEvent(true);
break;
case MotionEventActions.Up:
Control.Parent.RequestDisallowInterceptTouchEvent(false);
break;
case MotionEventActions.ButtonPress:
Console.WriteLine("press");
break;
case MotionEventActions.Mask:
Console.WriteLine("mask");
break;
}
// Calling this will allow the scrolling event to be executed in the WebView
Control.OnTouchEvent(e.Event);
}
Instead of using the gesture recognizer on your webview, you can use the Focused event like following . It will been invoked when you tap the WebView .
var wb = new WebView
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Source = "xxx",
};
wb.Focused += (sender, event) =>
{
//Handle your logic here!
wb.Unfocus();
};
Unfocus() is used if you want to implement your logic everytime the webview is tapped.
I am using xamarin forms for my app. Bascially My app need portrait mode orientation. But When i click on the button on my page, I need to find whether my device is on portrait or landscape. But my app orientation is always showing portrait mode.
MainActivity.cs:
using System;
using Android.App;
using Android.Content.PM;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.OS;
using Android.Content;
using Xamarin.Forms;
using Plugin.CurrentActivity;
namespace App2.Droid
{
[Activity(Label = "App2", Icon = "#mipmap/icon", Theme = "#style/MainTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
{
protected override void OnCreate(Bundle savedInstanceState)
{
TabLayoutResource = Resource.Layout.Tabbar;
ToolbarResource = Resource.Layout.Toolbar;
if (!isPad(this))
{
RequestedOrientation = ScreenOrientation.Portrait;
}
else
{
RequestedOrientation = ScreenOrientation.Portrait;
}
CrossCurrentActivity.Current.Activity = this;
base.OnCreate(savedInstanceState);
Xamarin.Essentials.Platform.Init(this, savedInstanceState);
global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
LoadApplication(new App());
}
public static bool isPad(Context context)
{
return (context.Resources.Configuration.ScreenLayout & Android.Content.Res.ScreenLayout.SizeMask) >= Android.Content.Res.ScreenLayout.SizeLarge;
}
public override void OnConfigurationChanged(Android.Content.Res.Configuration newConfig)
{
base.OnConfigurationChanged(newConfig);
switch (newConfig.Orientation)
{
case Android.Content.Res.Orientation.Portrait:
switch (Device.Idiom)
{
case TargetIdiom.Phone:
LockRotation(Orientation.Vertical);
break;
case TargetIdiom.Tablet:
LockRotation(Orientation.Horizontal);
break;
}
break;
case Android.Content.Res.Orientation.Landscape:
switch (Device.Idiom)
{
case TargetIdiom.Phone:
LockRotation(Orientation.Vertical);
break;
case TargetIdiom.Tablet:
LockRotation(Orientation.Horizontal);
break;
}
break;
}
}
private void LockRotation(Orientation orientation)
{
switch (orientation)
{
case Orientation.Vertical:
RequestedOrientation = ScreenOrientation.Portrait;
break;
case Orientation.Horizontal:
RequestedOrientation = ScreenOrientation.Landscape;
break;
}
}
}
}
TestPage.xaml.cs:
private void btnsubmit_Clicked(object sender, EventArgs e)
{
lblText.Text = CrossDeviceOrientation.Current.CurrentOrientation.ToString();
}
But it is showing always portrait(App Orientation). But I need device orientation.
Please help me to resolve this issue
You can use Xamarin.Essentials: Device Display Information to achieve it.
Here is my code, when device change the Orientation, will push a Alert to show the device Orientation.
public partial class MainPage : ContentPage
{
public MainPage()
{
InitializeComponent();
DeviceDisplay.MainDisplayInfoChanged += OnMainDisplayInfoChanged;
}
private void OnMainDisplayInfoChanged(object sender, DisplayInfoChangedEventArgs e)
{
// throw new NotImplementedException();
DisplayAlert("Info", e.DisplayInfo.Orientation.ToString() + " ", "OK");
}
}
Here is running GIF.
so i managed to get a stock navigation drawer to work and the action bar title to change with the fragments selected. I've also managed to get the backstack working easy peasy.
What i can't figure out how to do is get the action bar title to change back with the back click. google documentations says to add a onBackStackChangedListener:
getSupportFragmentManager().addOnBackStackChangedListener(
new FragmentManager.OnBackStackChangedListener() {
public void onBackStackChanged() {
// Update your UI here.
}
});
but i'm at a lost where to place it? they say when i .commit to changes so i assumed it was placed after
if (id == R.id.nav_spatial_awareness) {
setTitle("Spatial Awareness");
SpatialAwareness spatialAwarenessFragment = new SpatialAwareness();
android.support.v4.app.FragmentManager spatialAwarenessManager = getSupportFragmentManager();
spatialAwarenessManager.beginTransaction()
.addToBackStack(null)
.replace(R.id.main_content_layout, spatialAwarenessFragment, spatialAwarenessFragment.getTag())
.commit();
but that didn't work, this is what i tried and all i get is red squigglies
if (id == R.id.nav_spatial_awareness) {
setTitle("Spatial Awareness");
SpatialAwareness spatialAwarenessFragment = new SpatialAwareness();
android.support.v4.app.FragmentManager spatialAwarenessManager = getSupportFragmentManager();
spatialAwarenessManager.beginTransaction()
.addToBackStack(null)
.replace(R.id.main_content_layout, spatialAwarenessFragment, spatialAwarenessFragment.getTag())
.commit();
getSupportFragmentManager().addOnBackStackChangedListener(
new FragmentManager.OnBackStackChangedListener() {
public void onBackStackChanged() {
setTitle("Spatial Awareness");
}
});
please help me noob
so i tried this
if (id == R.id.nav_spatial_awareness) {
setTitle("Spatial Awareness");
final SpatialAwareness spatialAwarenessFragment = new SpatialAwareness();
android.support.v4.app.FragmentManager spatialAwarenessManager = getSupportFragmentManager();
spatialAwarenessManager.beginTransaction()
.addToBackStack(null)
.replace(R.id.main_content_layout, spatialAwarenessFragment, "spatialAwarenessFragmentTag")
.commit();
getSupportFragmentManager().addOnBackStackChangedListener(
new FragmentManager.OnBackStackChangedListener() {
public void onBackStackChanged() {
android.app.Fragment currentBackStackFragment = getFragmentManager().findFragmentByTag("spatialAwarenessFragmentTag");
if(currentBackStackFragment instanceof SpatialAwareness){
setTitle("Spatial");
}
}
});
i gave my fragment a tag and then tried matching the instance and then changing the title, still no good :(
Yes, the solution as mentioned here is to add a FragmentManager.OnBackStackChangedListener to your activity's FragmentManager.
Here is an example from a project I worked on:
(I have a navigation drawer with 7 Fragments and the OverviewFragment is the initial one that opens when the MainActivity opens)
My MainActivity:
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener, FragmentManager.OnBackStackChangedListener {
...
#Override
protected void onCreate(Bundle savedInstanceState) {
...
NavigationView navigationView = findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
if (savedInstanceState == null) {
// open the default fragment
OverviewFragment fragment = new OverviewFragment();
getSupportFragmentManager().beginTransaction()
.add(R.id.fragment_container, fragment).commit();
setTitle(R.string.title_fragment_overview);
}
getSupportFragmentManager().addOnBackStackChangedListener(this);
}
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
Fragment fragment = null;
switch (item.getItemId()) {
case R.id.nav_overview:
fragment = new OverviewFragment();
break;
case R.id.nav_schedule:
fragment = new ScheduleFragment();
break;
case R.id.nav_all_tasks:
fragment = new AllTasksFragment();
break;
case R.id.nav_announcements:
fragment = new AnnouncementFragment();
break;
case R.id.nav_my_courses:
fragment = new MyCoursesFragment();
break;
case R.id.nav_map:
fragment = new MapFragment();
break;
case R.id.nav_settings:
fragment = new SettingsFragment();
break;
default:
fragment = new OverviewFragment();
}
getSupportFragmentManager().beginTransaction()
.replace(R.id.fragment_container, fragment)
.addToBackStack(null)
.commit();
drawer.closeDrawer(GravityCompat.START);
return true;
}
#Override
public void onBackStackChanged() {
FragmentManager fragmentManager = getSupportFragmentManager();
Fragment currentFragment =
fragmentManager.findFragmentById(R.id.fragment_container);
if (currentFragment instanceof OverviewFragment) {
setTitle(R.string.title_fragment_overview);
navigationView.getMenu().findItem(R.id.nav_overview).setChecked(true);
}
else if (currentFragment instanceof ScheduleFragment) {
setTitle(R.string.title_fragment_schedule);
navigationView.getMenu().findItem(R.id.nav_schedule).setChecked(true);
}
else if (currentFragment instanceof AllTasksFragment) {
setTitle(R.string.title_fragment_all_tasks);
navigationView.getMenu().findItem(R.id.nav_all_tasks).setChecked(true);
}
else if (currentFragment instanceof MyCoursesFragment) {
setTitle(R.string.title_fragment_my_courses);
navigationView.getMenu().findItem(R.id.nav_my_courses).setChecked(true);
}
else if (currentFragment instanceof AnnouncementFragment) {
setTitle(R.string.title_fragment_announcements);
navigationView.getMenu().findItem(R.id.nav_announcements).setChecked(true);
}
else if (currentFragment instanceof MapFragment) {
setTitle(R.string.title_fragment_map);
navigationView.getMenu().findItem(R.id.nav_map).setChecked(true);
}
else if (currentFragment instanceof SettingsFragment) {
setTitle(R.string.title_fragment_settings);
navigationView.getMenu().findItem(R.id.nav_settings).setChecked(true);
}
}
}
Here's the entire project: https://github.com/FCI-E-campus/fci-e-campus-android