Recently, designers in my company liked creating half-above elements in layouts for Android apps. I've been struggling for a while trying to make these elements behave as good as possible, but I'm already tired of it. Is there any way of positioning views like on this image
with an assumption that if user touch row/card it became "checked" and this black dot icon became visible (second click makes it invisible of course).
You can do something like this:
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="match_parent">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_toEndOf="#+id/circle_view"
android:background="#android:color/holo_blue_bright">
<android.support.v7.widget.CardView
android:id="#+id/second_view"
android:layout_width="100dp"
android:layout_height="match_parent"/>
</FrameLayout
<View
android:id="#+id/circle_view"
android:layout_width="16dp"
android:layout_height="16dp"
android:background="#android:color/holo_red_dark"
android:layout_marginEnd="-8dp"
android:layout_centerVertical="true"/>
</RelativeLayout>
second_view is endOf circle_view so if circle_view is gone second_view will align to startOf parent.
circle_view should have marginEnd set to negative value of its width divided by two
Related
I would do put white space on top and on bottom of a recyclerView.
in html/css for example i can make a scrollable parent-container with fixed height and insert a child-container with adaptable height and set paddingTop and paddingBottom of child-container.
i tryed to repeat this system in layout.xml
<ScrollView
android:id="#+id/ScrollView"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="#+id/RecyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="50dp"
android:paddingBottom="35dp"
android:clipChildren="false"
android:nestedScrollingEnabled="false"
tools:itemCount="10" />
</ScrollView>
but i see the "wrap_content" adapt height ONLY if that is minor of "match_parent", as the View is scrollable(in theory) (or that is what i undestand).
But this break my system because i need the child-container is NOT scrollable.
if i set nestedScrollingEnabled="false" cuts the elements out of the viewport, if i set "true" the recycleView scrolls normally but the whitespaces stay fixed
exist another way to get what I want?
attempted result
try to use this way by adding clipToPadding and set to false you can add white space in top and bottom
<android.support.v7.widget.RecyclerView
android:id="#+id/list_data"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="#dimen/view_padding"
android:paddingRight="#dimen/view_padding"
android:clipToPadding="false"
android:paddingBottom="90dp"
android:paddingTop="90dp"/>
Open source code that I am using
in my design render it shows me the entire background is blue but the actually app only have color on the listviews. Following is my xml code and screen shots.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#b8569fee">
<TextView android:id="#+id/device_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#b8569fee"
android:textSize="24dp"/>
<TextView
android:id="#+id/device_address"
android:layout_width="match_parent"
android:background="#b8569fee"
android:layout_height="wrap_content"
android:textSize="12dp" />
</LinearLayout>
render
actually app:
I tried to change the textview layout height to match_parent, but it still didn't work, so what do i need to do to change the entire background?
Thnaks
What's happening here is that your XML file is defining the layout for an individual element in that list view, then the list view is programatically applying this XML to build a new view onto the list whenever a new BLE device is discovered. The size of each list element is defined externally, by whatever is putting each of your views into the list. Therefore, when you put match_parent in the LinearLayout and expect that to fix your issue, it does not because it only fills the area allotted by the listview. The fix is to change the background color within the listview itself, which is not done in this XML.
I'd need to see to more code to know exactly how to do this, but I am going to take a shot in the dark and assume that you are using a ListActivity, as in the Google BluetoothLeGatt example. In this case, you can change the background color of the ListView using something like:
getListView().setBackgroundColor(Color.rgb(86, 159, 238));
Placed in the onCreate method.
The view indicated is only a view inside the layout that contains the ListView:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#b8569fee">
<TextView android:id="#+id/device_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#b8569fee"
android:textSize="24dp"/>
<TextView
android:id="#+id/device_address"
android:layout_width="match_parent"
android:background="#b8569fee"
android:layout_height="wrap_content"
android:textSize="12dp" />
</LinearLayout>
You must change the background color to the layout that contains the ListView
android:background="#b8569fee"
I have the Views attached to each other in the following order:
Activity->RelativeLayout->RelativeLayout->Text
When I change the Y of one of the Text attached to the inner RelativeLayout, parts of it are cut.
Here's a screenshot:
http://s28.postimg.org/ypmvrjz25/image.png
I'm coding purely in Java, no XML.
What's going on?
It looks like one layout is overlapping on another because the menu bar is pushing it down. If you just want the text centered I would suggest setting that in the parameters like so.
android:gravity="center"
This places the text in the center if that is what you want.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Medium Text"
android:id="#+id/textView12"
android:layout_gravity="center"
android:gravity="center_vertical|center_horizontal" />
</LinearLayout>
As #Jonathan Whalen suggested you probably have some overlap, I suggest you to change your relative layouts background color to see wich one is overlapping the text. Also try to not use fixed height for the layouts but use wrap_content instead, as fixed dims are frequently the cause of layouts overlap.
I have multiple ImageViews which are transparent and are meant to over lap one another. I am aligning then to one another but one problem presist. How can I set the order in which they are layered? Ive tried revising the code in both xml and how the images are set in the actual java code...
I have tried FrameLayout but maybe Im not using it right...here is my implementation:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:context=".RadarActivity" >
<ImageView
android:id="#+id/imageview_topo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="45dp"
android:scaleType="center"
android:visibility="invisible" />
<ImageView
android:id="#+id/imageview_counties"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="45dp"
android:scaleType="center"
android:visibility="invisible" />
No matter what I do...imageview_topo is always placed on top. Even in the code i have instantated topo first and retrieved its image first!
Thank you!
I referred a site here that says:
If multiple child views exist, then they are drawn, in order, one atop
the other. This means that the first view added to the frame layout
will display on the bottom of the stack, and the last view added will
display on top.
You can check this site too: http://blog.neteril.org/blog/2013/10/10/framelayout-your-best-ui-friend/
May be i can help you more if you show the screenshot of your UI.
OK, Im starting to get the hang of how XML operates with the Android interface, but I've ran into a problem...
I just have a HorizontalScrollView with a RelativeLayout inside to which I will place other views later. The HorizontalScrollView as you can see is sitting above a button, and below another button. I like where its placed, but I dont want it exactly right above and below the buttons. I would like some spacing (padding). Ive tried adding padding but it seems to have no effect...
Heres my attempted XML:
<HorizontalScrollView
android:id="#+id/scrollview_xyzInfo"
android:layout_width="match_parent"
android:layout_height="130dp"
android:layout_above="#+id/button_refresh"
android:layout_alignParentRight="true"
android:layout_below="#+id/button_mySettings"
android:paddingTop="20dp"
android:paddingBottom="20dp"
android:background="#drawable/refresh_selector" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="match_parent" >
</RelativeLayout>
</HorizontalScrollView>
Any help would be much appreciated :-)
Nevermind! Use margins when seperating two views like so:
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
Answer Found at:
Padding not working Android
Padding and margin works only with LinearLayout. Which layout are you using?