I'm implementing a Navigation View on my activityHome for the first time. When i run the app and enter the home activity it function well. The problem is at the XML editor on the android studio, the Nav View is above all the other elements and doesn't let me click on them.
I haven't touch anything else but these yet.
Thanks.
XML CODE:
<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/dl"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFFFFF"
android:fitsSystemWindows="true"
tools:context=".activities.HomeActivity"
tools:openDrawer="start">
<com.google.android.material.navigation.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="#layout/header"
android:background="#color/colorPrimary"
app:menu="#menu/menu"
tools:ignore="MissingConstraints" />
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageButton
android:id="#+id/iv_menu"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="?android:selectableItemBackground"
android:scaleType="centerInside"
app:layout_constraintBottom_toTopOf="#+id/guideline46"
app:layout_constraintEnd_toStartOf="#+id/guideline139"
app:layout_constraintStart_toStartOf="#+id/guideline135"
app:layout_constraintTop_toTopOf="#+id/guideline45"
android:elevation="10dp"
app:srcCompat="#drawable/menubuttonofthreelines_79781" />
...
and continues with the other elements.
Your layout has nothing wrong..
The reason that Android Studio shows that the drawer layout in the Open state in the design view because you set tools:openDrawer="start" in the DrawerLayout .. if you want to see the main layout in the design mode (i.e. to make the drawer in the close state), then you need to remove this attribute.
This attribute won't affect the looking of your app when you launch it.
Documentation:
You can insert sample data in your layout preview by using the tools: prefix instead of android: with any attribute from the Android framework. This is useful when the attribute's value isn't populated until runtime but you want to see the effect beforehand, in the layout preview.
XML tools namespace is just used to show you some behavior on Android Studio, but not while you run the app. Please check documentation for more info
Related
I am creating a single activity application using jetpack navigation. Everything is working as expected. I have a requirement to make some fragments full screen.
Here is my layout xml.
<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/main_drawer"
android:fitsSystemWindows="true"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="?attr/colorSurface"
tools:context=".features.HomeActivity">
<androidx.fragment.app.FragmentContainerView
android:id="#+id/main_nav_container"
android:name="androidx.navigation.fragment.NavHostFragment"
android:fitsSystemWindows="true"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:defaultNavHost="true"
app:navGraph="#navigation/main_navigation" />
<com.google.android.material.navigation.NavigationView
android:id="#+id/navigation_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="#layout/main_header"
app:itemShapeInsetStart="0dp" />
</androidx.drawerlayout.widget.DrawerLayout>
As you can see I have used the android:fitsSystemWindows attribute in FragmentContainerView.
But this is not working as expected and after inspecting the layout using Layout Inspector I am seeing duplicate FragmentContainerView in the view hierarchy.
Here is a screen shot of the view hierarchy.
The problem this creates is that the first FragmentContainerView has the fitsSystemWindows attribute set to true but the second FragmentContainerView doesn't have that attribute set. I also tried the Advanced Navigation Sample and inspected the view and it also has the duplicate FragmentContainerView.
Can anyone please explain this to me? Thanks in advance.
im having an issue with layout. I am trying to get the constraint layout to be placed underneath the toolbar. However, it decides it wants to overlap the toolbar. I have tried using app:layout_behavior="#string/appbar_scrolling_view_behavior" with no luck.
The toolbar is creating in another xml file and called in using include.
Activity below
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/drawer_layout"
android:fitsSystemWindows="true"
tools:context="XXXXXX"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<include
android:id="#+id/test1234"
layout="#layout/app_bar_home"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<android.support.design.widget.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="#layout/nav_header"
app:menu="#menu/drawer_menu" />
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintTop_toBottomOf="#id/test1234">
**Bunch of constraints here etc**
**Bunch of buttons here**
</android.support.constraint.ConstraintLayout>
</android.support.v4.widget.DrawerLayout>
Here is an image of what it looks like
What it should look like
Edit
It is fine when shown in the design view of the android studio. However when opened on a phone or emulator it is still broken.
App still looks like the second image when emulated.
With the fixes below
I faced the same issue then i cracked it with this.
in your constraint layout, write this
android:layout_marginTop="?attr/actionBarSize"
app:layout_behavior="#string/appbar_scrolling_view_behavior
You're implying this attribute to the parent tag. You must add this to the ConstraintLayout or the main content of the drawer layout.
I recently implemented a navigation drawer into the main screen of my app. For some reason a small grey (or transparent black) bar is being rendered on top of it.
Screenshot:
Layout code:
<android.support.design.widget.CoordinatorLayout
... >
<LinearLayout
... >
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="#dimen/appbar_padding_top"
android:theme="#style/AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/PopupOverlay"/>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.DrawerLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/drawer_layout">
<fragment
... />
<android.support.design.widget.NavigationView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="#+id/navigation"
android:layout_gravity="start">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/list_nav"/>
</android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>
</LinearLayout>
<android.support.design.widget.FloatingActionButton
... />
</android.support.design.widget.CoordinatorLayout>
The Java portion is just your generic list-filling stuff. Let me know if you need more code.
How can I remove this weird bar?
For me, it worked to add
app:insetForeground="#color/transparent"
to the NavigationView's XML definition.
NavigationView is a very specialized ViewGroup that builds its own internal structure from provided resources. It's not meant to be used as a regular ViewGroup. That is, it's not meant to have child Views added directly to it, either in layout XML, or in code.
This is not immediately apparent, though, since no fatal error will occur if you do add children to it manually. It is further muddled by the fact that Android Studio's recent Navigation Drawer templates use NavigationView as the default drawer View in the DrawerLayout, with no indication that it is not mandatory that the drawer be a NavigationView. A drawer can be virtually any kind of View or ViewGroup.
In this case, the shadow is apparently coming from something internal to the NavigationView. However, since it's not being used for any of its specialized features, the NavigationView can be removed completely, and the ListView can act as the drawer on its own.
Simply remove the <NavigationView> element, and any code associated with it. To setup the ListView as the drawer, set its layout_gravity attribute to start, and set its layout_width to an exact value; e.g., 240dp.
i add in my activity_main.xml line:
<com.google.android.material.navigation.NavigationView
...
app:insetForeground="#android:color/transparent" />
and it works fine!
The following layout xml snippet works fine. But if I make any attempt to remove the Floating Action Button in it, the background color of "#color/green" in main Layout element gets ignored by the IDEA/Android Studio Layout Editor.
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:ignore="RtlHardcoded"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/green"
android:fitsSystemWindows="true">
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:onClick="callDirector"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:src="#android:drawable/ic_dialog_alert"/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
android:background="#color/green"
tools:context="org.drachenschloss.bidzclient.MainActivity">
I'm perfectly content to remove both the FAB AND the CoordinatorLayout (if memory serves, I only put in the CoordinatorLayout for the FAB), thus moving all of the xmlns elements to the RelativeLayout as that would become the root layout element for the activity but that doesn't help either.
Again the green background color works fine in the app. It's just not shown in the IDE layout editor display. I've even tried adding
tools:background="#color/green"
in order to cause the root layout element (whichever it is) to make the layout display in IDEA get the clue, but nothing changes. The moment the FAB goes away, the background color for the activity does too.
Seems this is a difficult to reproduce issue in both IJ and Android Studio.
https://issuetracker.google.com/issues/62334380
I'm making an app and I'm using fragments in an Activity, I'm switching this fragments with the replace function. The problem here is with the WebViewFragments, when replacing an existing WebViewFragment with other some times the system navigation bar becomes white...
App screens, from left to right: Normal, error, error:
This is my layout
Activity
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical">
<include layout="#layout/toolbar"/>
<android.support.v4.widget.DrawerLayout
android:id="#+id/drawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="#+id/contentPanel"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<android.support.design.widget.NavigationView
android:id="#+id/navigationView"
android:layout_height="match_parent"
android:layout_width="wrap_content"
android:layout_gravity="start"
android:background="?colorAccent"
app:itemTextColor="#drawable/navigation_items_color_selector"
app:menu="#menu/menu_navigation"
style="#style/NavigationDrawerStyle"/>
</android.support.v4.widget.DrawerLayout>
</LinearLayout>
I'm using androids WebViewFragment so no layout there defined by me, I tried with a custom layout with the Webview as the root layout and got the same problem
The hierarchy viewer doesn't show anything abnormal
Left OK, Right Error:
On the equipment the navigation bar is showing white while on the hierarchy viewer it shows correctly, the letf image is without the problem, the right has the problem, no additional views.
I'm using gradle version 2.14.1 and the following support libs:
com.android.support:design:24.2.1
com.android.support:appcompat-v7:24.2.1
com.android.support:recyclerview-v7:24.2.1
com.android.support:cardview-v7:24.2.1
com.android.support:percent:24.2.1
Edit: forgot to mention, this happens on Android 7.0 and Android 6.0
This was caused by the webview using the layerType as LAYER_TYPE_HARDWARE, switching it to LAYER_TYPE_SOFTWARE resolved the issue