I created my own DrawerLayout here is the XML:
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<!-- The main content view -->
<LinearLayout
android:id="#+id/content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" />
<!-- The navigation drawer -->
<ListView
android:id="#+id/navigation"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:divider="#android:color/white"
android:dividerHeight="1dp"
android:background="#FFF"/>
</android.support.v4.widget.DrawerLayout>
Instead of FrameLayout like you get by default I chose LinearLayout because it allows me to set margins/paddings and automatically adding elements bellow each other. Anyhow when I call:
LinearLayout layout = (LinearLayout) findViewById(R.id.content);
I get an exception saying cannot cast from FrameLayout to LinearLayout but I don't have LinearLayout defined anywhere.
You have stumbled on an interesting quirk on how Android creates Layouts.
The top-most layout is a FrameLayout that the system puts your layout in to. Its id is android.R.id.content. You probably importing the android.R file into your app so you're referencing android.R.id.content instead of your project's R file which would have the correct ID.
Related
I'm trying to create an application with fragment on the side as a menu bar.
My main problem is that when I open the fragment I can see the buttons behind it and even press them.
Of course I don't want that. I tried adding the property android:clickable="true" to the layout but it didn't help.
This is my code:
<RelativeLayout 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"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
tools:context="ibuy.ibuy.AddUpdateItem">
.
.
.
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/search_image"
android:id="#+id/btnBrows"
android:onClick="openItemTable"
android:layout_alignTop="#+id/imageView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
.
.
.
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="ibuy.ibuy.AddUpdateItem"
android:clickable="true">
<fragment
android:id="#+id/navigation_drawer"
android:layout_width="#dimen/navigation_drawer_width"
android:layout_height="match_parent"
android:layout_gravity="start"
android:name="Menus.smallMenu"
tools:layout="#layout/fragment_navigation_drawer"
android:alpha="255" />
</android.support.v4.widget.DrawerLayout>
</RelativeLayout>
This is the code of the listView of the fragment on other file:
<ListView
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"
android:choiceMode="singleChoice"
android:divider="#android:color/transparent"
android:dividerHeight="0dp"
android:background="#cccc"
tools:context="Menus.smallMenu"
android:clickable="true"/>
What am I doing wrong?
Thank you in advance!
I don't know what you meant by "I can see the buttons behind it". I assume you meant behind the DrawerLayout UI.
1)
In that case, you can use the attribute like android:layout_below="#id/btnBrows". As far as I know, all the UI elements should be positioned, otherwise they may be displayed one on top of another, like what you are seeing.
2) Also an issue is that both android:layout_width and layout_height of DrawerLayout is match_parent which fills up the whole screen. It competes screen space with the button. If the button is inside DrawerLayout, that would not be an issue but this might be your intentional design.
If you're into Android Studio, create a new Navigation Drawer Activity. Take a look at the main XML layout.
The DrawerLayout should be your root view. Inside it, you have the RelativeLayout with the buttons and the Fragment that is your navigation drawer.
That way, both are separated and the navigation drawer overlaps correctly when opened.
I'm struggling with LinearLayout when using DrawerLayout. This is using the Android Studio template for DrawerLayout:
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MyActivity">
<!-- As the main content view, the view below consumes the entire
space available using match_parent in both dimensions. -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:background="#00f"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
<LinearLayout
android:background="#f00"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0" />
</LinearLayout>
</LinearLayout>
<!-- android:layout_gravity="start" tells DrawerLayout to treat
this as a sliding drawer on the left side for left-to-right
languages and on the right side for right-to-left languages.
If you're not building against API 17 or higher, use
android:layout_gravity="left" instead. -->
<!-- The drawer is given a fixed width in dp and extends the full height of
the container. -->
<fragment android:id="#+id/navigation_drawer"
android:layout_width="#dimen/navigation_drawer_width"
android:layout_height="match_parent"
android:layout_gravity="start"
android:name="com.test.testdrawerlayout.NavigationDrawerFragment"
tools:layout="#layout/fragment_navigation_drawer" />
</android.support.v4.widget.DrawerLayout>
The preview in Android Studio shows this:
http://imgur.com/UlPGzJS
However, when running on my Nexus 5, the following shows:
http://imgur.com/w4QeGbB
As you can see, the layout_weight="1" part is not showing at all. When I create a blank project with the inner LinearLayout however, the layout works (with the blue layout taking most of the screen with the red layout at the bottom, just like the preview).
Any ideas would be really appreciated, as I'm completely stumped right now. Thanks in advance.
It appears I was using an older Android SDK platform. Once I went into SDK manager and installed API 19, it worked (with a new project).
Maybe it was a bug in an older implementation?
This is definitely an Android issue (or at least appcompat/design library issue). I've tested with different layouts inside the DrawerLayout, and concluded that the problem was "content_layout" file - the one that is displayed below the drawer.
Only using a clean, plain FrameLayout worked. No CoordinatorLayout, no fragments, no custom layouts nor 3rd-party layouts, just a good old FrameLayout with "match_parent" as width and height.
Inside the drawerlayout you should have a FrameLayout which contains the main content for your screen and you should also have a ListView in most cases to hold the contents of the navigation drawer.
It should be as such:
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- The main content view -->
<FrameLayout
android:id="#+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<!-- The navigation drawer -->
<ListView android:id="#+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:divider="#android:color/transparent"
android:dividerHeight="0dp"
android:background="#111"/>
</android.support.v4.widget.DrawerLayout>
Now place your LinearLayout within the FrameLayout. Think of the FrameLayout as the "container" that holds your main screen.
Note that the official Android documentations state that
The main content view (the FrameLayout above) must be the first
child in the DrawerLayout because the XML order implies
z-ordering and the drawer must be on top of the content.
For more reference and information, I would advise you check this link by clicking here.
Please mark this as the answer if it solved your problem. Thank you.
UPDATE:
Okay first, remove "xmlns:android="http://schemas.android.com/apk/res/android"" from your linearlayout. That should only appear once and in the main root xml, in this cause the DrawerLayout.
Next, fix how you are using your weights. Declare a android:weightSum attribute. Think of weightSum as a pie. In this case we set it too 5, so we have 5 pieces of the pie. Anything inside this layout using the android:layout_weight attribute. This first one is set to 4, which will take 4/5ths of the screen. The last one is 1/5th of the screen at the bottom.
Make sure this LinearLayout is still wrapped within the FrameLayout. Your LinearLayout should appear as such:
<LinearLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="5">
<LinearLayout
android:background="#00f"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="4"/>
<LinearLayout
android:background="#f00"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0" />
</LinearLayout>
</LinearLayout>
I am new to android, I follow this tutorial to create Navigation Drawer here
I make the navigation drawer successfully but I dont know how to change framelayout to my custom layout with button, textview....My app just show menu and blank framelayout, how can I solve this ?
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<FrameLayout
android:id="#+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="asdsadsad" />
<ListView
android:id="#+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#color/purple_dark"
android:choiceMode="singleChoice"
android:divider="#android:color/darker_gray"
android:dividerHeight="0.1dp"
android:listSelector="#drawable/ic_drawer"/>
</android.support.v4.widget.DrawerLayout>
you can use a RelativeLayout on LinearLayout instead of FrameLayout and you can build your whole layout inside that
If you need to add another layout you need to gie it to your closeDrawerand drawerOpen.
Please refer my answer here
I notice that the drawers within the Google applications are scrollable, but I cannot for some reason come to the conclusion of how to achieve a scrollable DrawerLayout. I attempted to construct the layout file with the following design paradigm.
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/frameLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".mainScreen">
<!-- Layout of Activity -->
</FrameLayout>
<!-- DrawerLayout segment -->
<ScrollView
android:id="#+id/scrollView"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/drawerLinearLayout"
android:orientation="vertical"
android:layout_width="260dp"
android:layout_height="match_parent"
android:layout_gravity="start|bottom"
android:layout_marginTop="?android:attr/actionBarSize"
android:divider="#android:color/transparent"
android:dividerHeight="0dp"
android:background="#77000000">
<!-- Layout of Drawer -->
</LinearLayout>
</ScrollView>
</android.support.v4.widget.DrawerLayout>
But, with or without the ScrollView, the drawer just cuts items off at the bottom when they go beyond the end of the screen. I can't get any form of scrolling enabled. Not sure what I am missing or need to enable. Thoughts would be appreciated.
The LinearLayout in the DrawerLayout segment contains different styled views. One view displays title only with a divider below it, one displays an imageview with text next to it and another displays a title with a switch built into the row. So, multiple styled views need to be accounted for if done outside of XML coded layout files.
While using a ListView is a valid option, it was useful for me to attempt and resolve the situation for which I already had such a large XML file constructed for my layout in between the ScrollView above. As it turned out, there were only a few small modifications needed in order to get it working as intended. The latest layout file constructed is the following:
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/frameLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".mainScreen">
<!-- Layout of Activity -->
</FrameLayout>
<!-- DrawerLayout segment -->
<ScrollView
android:id="#+id/scrollView"
android:layout_width="260dp"
android:layout_height="match_parent"
android:layout_gravity="start|bottom"
android:layout_marginTop="?android:attr/actionBarSize">
<LinearLayout
android:id="#+id/drawerLinearLayout"
android:orientation="vertical"
android:layout_width="260dp"
android:layout_height="wrap_content"
android:divider="#android:color/transparent"
android:dividerHeight="0dp"
android:background="#77000000">
<!-- Layout of Drawer -->
</LinearLayout>
</ScrollView>
</android.support.v4.widget.DrawerLayout>
The main modifications required me to alter where the gravity and the margin existed. The gravity needed to be in the surrounding ScrollView otherwise it would cause odd behavior that didn't scroll or actually crashed in some instances apparently. Then the inner layout needed to be changed to 'wrap content'.
If the margin was not moved into the ScrollView as well, it apparently doesn't scroll down to the bottom. It left a margin of scroll unscrolled at the bottom. Once this was resolved, the DrawerLayout worked as was expected at this point. The ListView option also proposed is another approach to be used, but as mentioned at this point it was worth me analyzing it a bit further to re-use the code that I already had written; especially with several different custom views that would need to be handled inside the view.
It seems that it only works properly with a ListView. You will take less time to migrate to ListView than trying to make the ScrollView to work.
You should use a listview along with the frame layout. Something like this :
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="#+id/frameLayout"
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="1"/>
<ListView android:id="#+id/left_drawer"
android:layout_width="180dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:divider="#android:color/transparent"
android:dividerHeight="0dp"
android:background="#111"/>
</android.support.v4.widget.DrawerLayout>
You can also refer to the Navigation Drawer documentation at developer.android.com. It has everything you will need.
is it possible to have an abstract activity which defines the layout (navigation and so on) and a subclasses that define content of the activity? How about xml layout files?
I mean I have an xml
<xxx.DefaultNavigationDrawer xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/navigation_drawer"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<FrameLayout
android:id="#+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<!-- Fragment contents go in here -->
</FrameLayout>
<ListView
android:id="#+id/navigation_drawer_list"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:layout_weight="1"
android:background="#drawable/calendar"
android:choiceMode="singleChoice"
android:divider="#color/calendar_divider"
android:dividerHeight="1dp" />
</xxx.DefaultNavigationDrawer>
and I'd like all my activities to have such layout. The only thing which would change is marked.
You can set your layout in your base Activity class and then in your derived Activity's onCreate you can call FragmentManager.replace() to replace the contents of your FrameLayout with your fragment.