I'm relatively new to android and I want to know how to put a visible divider/borders around images.
You could try to add an android:background attribute to your ImageView with the value of your desired border color. Then add an android:padding attribute to the ImageView with the value of your desired border width. It's not the most elegant solution, but it's understandable and for a new developer will do a fine job. For example:
<ImageView
android:id="#+id/list_item_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/android_image"
android:background="color/list_item_icon_border_color"
android:padding="1dp"
/>
Maybe the right way for performing this is by using custom XML drawables. You could check in Google for creating borders for ImageView using custom XML drawable. However being a little more complicated way than the upper mentioned method it could be an excellent way to start with XML defined custom drawables. Sooner or later you'll have to understand it, no other way. For circular border check this post - nice and clear explanation with custom XML drawable:
Create circular border around ImageView
In the item's layout you could put a View with heigth of 1dp or width 1dp and fill it with some color. This is a item for a list with a text and a bottom divider.
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#color/colorPrimary"/>
</FrameLayout>
Related
My question is more informative. I just want to know how to make such design. I found android application called "weather timeline" and inside of that application between CardViews (as I understand) they used this element which I pointed out in picture below. I think its just ImageView but how to set it as here. It will be interesting to know any idea about that! Thanks for attection!
You could easily do it in the following way.
Let us assume that we are using a collection view where the card element is one type and the black gap with text in the middle is the other.
The cardView would look something like this
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginTop="#dimen/circle_radius_half_size"
android:layout_marginBottom="#dimen/circle_radius_half_size">
</CardView>
<ImageView
android:layout_width="#dimen/circle_radius"
android:layout_height="#dimen/circle_radius"
android:layout_align_parentLeft="true"
android:layout_marginLeft="24dp"
android:src="#drawable/circle"
android:rotation="180"/>
<ImageView
android:layout_width="#dimen/circle_radius"
android:layout_height="#dimen/circle_radius"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_marginLeft="24dp"
android:src="#drawable/circle" />
</RelativeLayout>
Where drawable circle looks something like this
and the layout for black grape with text in the middle looks something like this
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp">
<View
android:layout_width="#dimen/width_of_line"
android:layout_height="match_parent"
android:layout_margin_left="#dimen/line_margin"
android:background="#color/white" />
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_margin_left="#dimen/line_margin" >
<!-- The Text View Layouts Here -->
</LinearLayout>
</LinearLayout>
Where line_margin is 24dp + CircleHalfSize - LineWidthHalfSize
Of course the CircleHalfSize and LineWidthHalfSize are in DP
Now it is just a question of arranging them properly via the adapter. Personally I would use the RecyclerView. Great Flexibility.
Also this way if you wanted the bubbles to be gone, all you have to do is set the bubble ImageView's visibility to GONE and that too you can do specifically either for the top or the bottom.
I'm pretty sure that this could be accomplished using 9-patched images.
By determining the way to draw your patches and how to set them as a background for your layouts you'll get the same result.
Quick illustrated demo
By adjusting the two backgrounds exactly one above the other you'll get the UI you posted.
Hope it helps.
Further reading
To see how to draw 9-patched images here is a documentation.
This can be accomplished by using a RelativeLayout. Then you can align all your views however you want inside your main view.
Thus, you would layout Card1 at the top, then layout the bubble connector with your marginTop attribute (remember this is from the top of the container, not from the bottom of the card) to layout that view wherever you want.
Basically, you would use a single RelativeLayout, then align the various views within that container wherever you want in relation to each other (or really in relation to the the top of your main view).
Checkout this Pseudo-code:
<RelativeLayout >
<CardView
layout_height = "8dp"
alignParentTop = "true"
/>
<!-- Connector Image -->
<ImageView
alignParentTop = "true"
layoutMarginTop = "10dp" <!-- or whatever it takes to align properly with CardView -->
/>
</RelativeLayout>
How to show a vertical line on the background, such as the one highlighted in blue on the image below?
In this example, I have a ListView with ImageView elements (and TextView, but it is not related to the line), and I want a vertical line on the background of these items to feel like they are "connected" to each one.
And also, note that the vertical line does not fill all the background.
The vertical line is on the left, and it is not equal for the all cases. Sometimes it fills all the row height (in most of ListView rows) and sometimes it just fills the half of row height (in the last item of the ListView and outside of the ListView, on the top, where we can see the big ImageView with the star icon).
Updated
I tried the suggestion proposed by Hellboy, and it almost work perfectly. I modified the proposed code for my case:
<RelativeLayout
android:layout_width="40dp"
android:layout_height="match_parent"
android:gravity="center"
android:layout_marginLeft="15dp">
<View
android:layout_width="4dp"
android:layout_height="match_parent"
android:background="#3399CC"
android:gravity="center"
android:layout_centerHorizontal="true"/>
<ImageView
android:id="#+id/user_image"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:gravity="center"
android:background="#android:color/holo_blue_light" >
</ImageView>
</RelativeLayout>
the RelativeLayout with the width="40dp" (the same as the original ImageView I was working with), height="match_parent (the same as he said), gravity="center" (to let them in the center of the row height) and layout_marginLeft="15dp" (to let a space to the left margin). In the ImageView, I added marginTop="10dp" and marginBottom="10dp", and with it, the blue vertical line appears. But I have other elements in the same row, so I have a parent layout (a linear layout). My parent layout is:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:gravity="center"
android:id="#+id/linearlayoutservicerow">
So, this parent layout above, has the described RelativeLayout and other LinearLayout with the other row elements. But the code results in flattened images. Why does this happen?! It seems like the RelativeLayout consider its height as the ImageView height (40dp) and does consider its marginTop and marginBottom, and with this the image is flattened.
Waiting more answers to this problem. I'll try another alternatives.
You can replace your ImageView with something like this:
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<View
android:layout_width="4dp"
android:layout_height="match_parent"
android:background="#color/navy_blue"
android:layout_centerHorizontal="true"/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="#drawable/image"/>
</RelativeLayout>
and of course in your first and last element you need to manipulate the height of the View and align it to Top or Bottom
I got it.
I've persisted in trying to fix the problem of the Updated section of my question (based on the solution initially proposed by #Hellboy) and I got results! So, how I achieved an answer to my own question, I decided to put as an answer.
The first step was to configure the XML file such as the code below.
Part of the final XML corresponding to the row layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:gravity="center"
android:id="#+id/linearlayoutservicerow">
<RelativeLayout
android:layout_width="40dp"
android:layout_height="match_parent"
android:gravity="center"
android:layout_marginLeft="15dp">
<View
android:layout_width="4dp"
android:id="#+id/verticallineview"
android:layout_height="match_parent"
android:background="#3399CC"
android:gravity="center"
android:layout_centerHorizontal="true"/>
<RelativeLayout
android:layout_width="40dp"
android:layout_height="match_parent"
android:gravity="center"
android:paddingBottom="10dp"
android:paddingTop="10dp">
<ImageView
android:id="#+id/user_image"
android:layout_width="40dp"
android:layout_height="40dp"
android:gravity="center"
android:background="#android:color/holo_blue_light" >
</ImageView>
</RelativeLayout>
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/layoutotherrowelements">
</LinearLayout>
</LinearLayout>
Explaining the XML:
Here we have the parent layout (linearlayoutservicerow) and inside it: a RelativeLayout (proposed by #HellBoym, with the structured discussed in the final of my question) and the LinearLayout to other elements of the row (layoutotherrowelements). Summarizing... What I modified?
The initial code resulted in flattened images because the RelativeLayout (parent) did not consider the ImageView marginTop and marginBottom, so the image was flattened vertically. (And if we let without margin, the RelativeLayout would mantain the same size and the vertical line would not appear on the top and on the bottom of image.) We must have a space between the ImageView and the RelativeLayout initially proposed, in order to show the line, but if it does not recognize the margin, how to create this space?
I just "encapsulated" the ImageView in another RelativeLayout (inside that parent RelativeLayout), and changed the margin parameters of the ImageView to padding parameters of this capsule RelativeLayout.
The problem of the last row
It results in the layout with a line background, but we still have the problem of the last row. In fact, this row is different, and in this case, it must have its height modified to not have the same parent's height. I decided to put at least, the ImageView's height and it worked! Remember to convert the value in dp to pixel, because the function getLayoutParams has all parameters expressed in pixels.
So, in the Adapter, we put the following code:
if(position==(getCount()-1)){
View my_line = (View)
row.findViewById(R.id.verticallineview);
//40dp, this is the ImageView height
int dpsize = 40;
//convert the height in dp unit to pixel (because the parameter is in px)
int px = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dpsize, context.getResources().getDisplayMetrics());
my_line.getLayoutParams().height = px;
}
And that is it!!!
It is worth mentioning that #dinesh sharma proposed other interesting alternative using 9-patch, that I will try later.
I did not want to use image as background (that is why I started asking about drawable), because my final goal was to improve this solution to make all dynamic (including the vertical line color), and I believe with image I could not achieve it. But in my original question I did not mention that, so if I have success with this other approach, I will accept it as correct answer.
Thanks for all your help! In my current solution I used the #Hellboy's clue of using a RelativeLayout and a View, and the #dinesh sharma's clue to verify if it is the last row of the ListView. I hope this answer and the others helps more people with similar problems.
You can use transparent 9-patch image as a background for you list view.
For creating nine-patch image please follow this:
http://developer.android.com/tools/help/draw9patch.html
Now verified answer
your image in item layout:
<RelativeLayout
android:id="#+id/rl"
android:layout_width="60dp"
android:layout_height="60dp"
android:background="#drawable/m"
android:paddingBottom="10dp"
android:paddingTop="10dp" >
<ImageView
android:id="#+id/grid_item_image"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_centerInParent="true"
android:src="#drawable/ic_launcher" />
</RelativeLayout>
three bg nine patch images for drawable
Handling in Adapter:
if(position==0)
holder.rl.setBackgroundResource(R.drawable.b);
if(position==(getCount()-1))
holder.rl.setBackgroundResource(R.drawable.t);
Finaly got output:
For a long time I am reading posts from stackoverflow because they are very helpful and google seems to think that also.
Since yesterday I have a problem with a row in a ListView in Android. I want to show an image and the area between the image and the bottom of the element should be filled with a grey color.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<RelativeLayout
android:id="#+id/ConversationsBadgeLayout"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="#c0c0c0"
android:orientation="vertical" >
<QuickContactBadge
android:id="#+id/ConversationsBadge"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" />
</RelativeLayout>
<!--
...
A LinearLayout with TextViews, shouldn't be interesting for this
...
-->
</RelativeLayout>
My Problem ist that the it seems that the inner layout only wraps the content but doesn't fill_parent. When I set for example 100dp it works but that is not what i want.
It would be nice if you could help me with that. I tried much workarround like using LinearLayouts and TextViews but nothing worked.
You can set the background color to the ListView itself, then everything in it will have the background you want.
BTW, I recommend using LinearLayout instead of RelativeLayout in your case.
The layout file should contain exactly one outermost element and it should have both android:layout_width="match_parent" and android:layout_height="match_parent" Your RelativeLayout has android:layout_height="wrap_content"
i think you can use you can take background color in another xml file and put in drawable folder and also using Linear Layout is very useful to your problem
This is my Android list_item layout XML:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:paddingRight="?android:attr/scrollbarSize"
android:background="#drawable/list_bg">
<TextView
android:id="#+id/tv_displayname"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:ellipsize="end"
android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>
This is the list_bg image:
and yet here is what it looks like when shown in Android emulator:
I can see that the background is being applied because there is a slight gradient effect to it, but I have no idea where this black overlay is coming from!
have you tried a different image to see if that one does the same thing? to me it looks like it is creating the image behind the list in your RelativeLayout and your textview background is on top. since you are setting it to fill the width of the row, i bet if you just set to wrap_content you would see it behind there
try putting the image as your TextView background instead
I have a large png that I would like to use as a background on different layouts, but offset it so that I can have different parts showing (much like you can in CSS), preferable in the xml.
My main layout for the activity contains the following xml:
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#layout/bg1">
Layout bg1 consists of the following xml:
<?xml version="1.0" encoding="utf-8"?>
<bitmap
xmlns:android="http://schemas.android.com/apk/res/android"
android:src="#drawable/big_image"
android:layout_marginTop="50sp"
android:paddingTop="50sp"
android:gravity="top|left" />
The gravity property works as expected but margins and paddings are ignored, presumably because I'm working on a bitmap object rather than a layout. What I want to do is set these to a minus amount so that only part of the picture is shown. I've tried using a shape but that only wraps the content whereas I need to fill the entire background.
Any suggestions would be gratefully received. Thanks.
I have used an ImageView with a negative top margin value. The ImageView is declared first within the layout so that it is lowest in the stack of controls and will be rendered behind the others.
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView
android:id="#+id/bigLogo"
android:src="#drawable/big_logo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginTop="-100px" />
</RelativeLayout>
You can use an InsetDrawable (it works from XML) to add extra padding to another drawable.