I'm trying to place an image that fills the width of the screen, has the height of the actual image (wrap_content) and sits at the very bottom of the Layout.
I've wrote the below code, but between the second ImageView (the one with drawable/user_board) and the very bottom of the screen, there is a small space. Why is this? I've tried setting padding and margins to 0dp, but it seems it doesn't do the trick. Any ideas?
Here is the code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/LayoutBoard"
android:noHistory="true"
android:padding="0dp" >
<ImageView
android:src="#drawable/game_interface_background"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="matrix" />
<ImageView
android:src="#drawable/user_board"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_margin="0dp"
android:padding="0dp" />
</RelativeLayout>
Doesn't your user_board image have some transparent space at the bottom? Or maybe you can try setting negative value in the padding field of the second ImageView.
Use android:scaleType="fitXY" and the bitmap contained in your ImageView will be resized to fit the whole ImageView. So using this attribute in both your imageViews will probably hide that empty space. However keep in mind that this does not keep the aspect ratio of the image. See here for more information about the android:scaleType attribute tag and the possible values it can take.
Related
I have a problem to make a proper layout for a special case. I experimented on that already for a while both in the designer and in code, but I couldn't find a solution, that's why I need your help.
I have to create a layout which should have a structure like pictured in the images below. It is mainly a combination of several linearLayouts. The problem I have is, that the picture can only be added within the code, because this layout is a detail view that displays information about items from a list.
On the top is the layout without an image place holder (no loaded picture - indicated in black), here the width of "linearLayout_BigLeft" is given by the width of the two buttons and the textView (which all have content) in the "linearLayout_BelowImage".
In the middle you see the layout after the picture has been loaded (image indictated in orange) in code. Depending on the aspect ratio of the android device the black colored gaps differ. I can't get the image to resize to the whole available height and adjusting its width accordingly. The "linearLayout_BelowImage" adjusts itself to the image size (the textView in it is getting wider).
On the bottom is the layout which shows the ideal state. The image always should use the whole available space in height and resize accordingly in width. The "linearLayout_BelowImage" adjusts itself to the image size (the textView in it is getting wider).
Question:
How can I get a layout (after the image is loaded in code) that looks like the bottom picture? The image, after loaded in code, has to resize itself, so it uses the whole available height and resizes its width accordingly. The "relativeLayout_Top" and the "linearLayout_BelowImage" have both fixed heights. The "scrollView_BigRight" adjusts itself based on the space that the "imageView_OrangeImage" doesn't need for itself.
I can deal with solutions that adjust the layout in code, after the image has been added, or solutions that makes the layout.xml itself flexilbe enough to deal with this situation.
Any help is highly appreciated. If you need any more information please let me know.
Below is the main content of my layout.xml, that is needed for this problem.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="#color/white">
<RelativeLayout
android:id="#+id/relativeLayout_Top"
android:layout_width="match_parent"
android:layout_height="40dp"
android:background="#color/blue" >
</RelativeLayout>
<LinearLayout
android:id="#+id/linearLayout_Big"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal"
android:background="#color/transparent" >
<LinearLayout
android:id="#+id/LinearLayout_BigLeft"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#color/transparent" >
<ImageView
android:id="#+id/imageView_OrangeImage"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#color/black" />
<LinearLayout
android:id="#+id/linearLayout_BelowImage"
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#color/blue_white_blue" >
<Button
android:id="#+id/btn1"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="#color/blue" />
<TextView
android:id="#+id/textView_BelowImageMiddle"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#color/white" />
<Button
android:id="#+id/btn2"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="#color/blue" />
</LinearLayout>
</LinearLayout>
<ScrollView
android:id="#+id/scrollView_BigRight"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#color/grey" >
</ScrollView>
</LinearLayout>
</LinearLayout>
android:adjustViewBounds="true"
This one’s a manual fix for “optimized” code in scaleType="fitCenter". Basically when Android adds an image resource to the ImageView it tends to get the width & height from the resource instead of the layout. This can cause layouts to reposition around the full size of the image instead of the actual viewable size.
AdjustViewBounds forces Android to resize the ImageView to match the resized image prior to laying everything else out. There are times where this calculation won’t work, such as when the ImageView is set to layout_width="0dip". If it’s not working, wrap the ImageView in a RelativeLayout or FrameLayout which handles the 0dip flexible size instead
get it from this site
OR
Mode android:scaleType="centerCrop" uniformly stretches the image to fill the entire container and trims unnecessary.
You can change the way it default scales images using the android:scaleType parameter. By the way, the easiest way to discover how this works would simply have been to experiment a bit yourself!
get it here
I have an imageview that I want to fill it's parent RelativeLayout to act as a background image.
The image is the correct size until the other views in the relative layout expand, and thus expand the size of the entire layout (just height in my case) (ie: a large string from the internet has been loaded into a textView). Then the image view doesn't grow to continue matching the parent. Is that expected behavior and if so, how do we get around it?
Here's my layout code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/parentLayout">
<my.BlurredImageView
android:scaleType="centerCrop"
android:id="#+id/profile_bg"
ImageUrl= "Avatar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
/>
<LOTS AND LOTS OF OTHER VIEWS>
OK I am sure you know this already, but for thoroughness I thought I should mention that the easiest way to set the background of the relative layout is directly in the background field:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="drawable file or file from internet you load programatically"
android:id="#+id/parentLayout">
Now to your question. If for whatever reason you really need an imageView as a background, then use the width and height as 0dp because you are aligning to parent on all 4 sides. See if this makes a difference:
<my.BlurredImageView
android:scaleType="centerCrop"
android:id="#+id/profile_bg"
ImageUrl= "Avatar"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
/>
To check the actual size of the image view, and whether it fills your relative layout, the most practical way would be to make the background of the RelativeLayout bright green, and the background of the imageView bright Orange. Then you always know exactly where they are :-)
I am using a relativelayout to overlay to images. On all screen sizes so far that I have tested (from 2.7 to 10.1 inch) I always get white space on top of my image. In my IDE I always see that my relativelayout is causing the extra space on top and on the bottom of my image.
Why is that? I have set all height attributes to wrap_content and even added the adjustViewBounds attribute.
Note: You should know that my image is a lot bigger in size, meaning that there will be some sort of scaling.
Thanks for your tips!
Here is the code:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#FFFFFF"
android:orientation="vertical" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:orientation="vertical"
android:focusable="true"
android:focusableInTouchMode="true">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="#string/bgf"
android:textColor="#000000"
android:textSize="25sp" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:paddingRight="5dp"
android:paddingLeft="5dp"
android:paddingBottom="5dp"
android:layout_gravity="center_horizontal"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:src="#drawable/cde"
android:contentDescription="#string/cde" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:layout_gravity="center_horizontal"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:src="#drawable/fgh"
android:contentDescription="#string/abc" />
</RelativeLayout>
</LinearLayout>
</ScrollView>
I had the exact problem. After struggling for quite some time, I solved it by following this
and add the following to my program
android:adjustViewBounds="true"
It works perfectly
This is occuring as the image is scaled down to fit the area available without losing the image's aspect ratio. You are getting white space because the image first occupied the available width and according to the aspect ratio of the original image the height of the was brought down.
To get a clearer understanding, I suggest you to do the following :
Set the background color of the relative layout to some color
Now you can understand the space between the imageView and the relativelayout.
Once you have checked that on your device, Do the following change and try again
Set the attribute scaleType = "fitXY" in your imageView.
This will make the image to scale and occupy the complete area available to the imageView. (The aspect ratio of the original image will be lost in this case). Now you will come to know the amount of area the imageView occupied.
I suppose once you do this you can conclude that :
In the first run if you had set the background of relativeLayout as black, it won't be visible since the imageView occupies the entire area without leaving any gap.
In the second run the image will cover the entire height and width, although the aspect ratio was lost. Hence this ascertains that imageView does cover the width and height and no space is left, its the image's aspect ratio ie the problem
In case you arrive at a different result altogether please do inform, we can work it out
EDIT :
Please do remove the paddings you have given for imageView too
Essentially I'm looking for something like scaleType="centerCrop" without the center.
I am having trouble making an ImageView display correctly when it's larger than the screen dimensions. I'm trying to display an ImageView that starts top=0, left=0 and is not scaled. It's okay that the image does not fit on the screen. Right now I have it in a relative layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/postagram_blank_large"/>
</RelativeLayout>
I've tried using a wrap_content on the RelativeLayout height and width. I've also played with scaleType as well as using a Scrollview. The problem with the ScrollView is that the image is both taller and wider than the display port (again this is meant to happen).
How can I make this work?
could it be that android:background scales the image to the screensize? try to use android:src instead.
Try this:
<ImageView
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:src="#drawable/postagram_blank_large"
android:scaleType="matrix"
/>
wrap_content instead of fill_parent also works, use whatever you want
In my Android project, I am not quite sure how to make my background image fill the entirety of the RelativeLayout root element in XML, which is the size of the screen. I want to be sure that this works for all aspect ratios, so the image will clip vertically or horizontally as necessary. Does someone know how to do this easily? I've only seen questions regarding ImageViews and Buttons, but not really generic Views.
My XML file currently:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/enclosing_rl"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/background"
android:fitsSystemWindows="false">
<!-- Other elements -->
</RelativeLayout>
Other than turning your image into a nine patch I don't think this is possible. What you could do instead is-
Add an ImageView as the first view in your RelativeLayout.
Set layout_centerInParent to true.
Have the layout_width and layout_height set to match_parent.
Then set scaleType to centerCrop.
That will make sure the image fills the screen without any distortion, but depending on screen size/orientation either some of the top/bottom or left/right of the image may be cut off.
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
android:scaleType="centerCrop"
android:src="#drawable/background" />
Any other views in the RelativeLayout will appear on top of the ImageView, as long as it is the first view in the RelativeLayout (when you are in the xml).
Create a bitmap drawable XML resource in your res/drawable folder:
<?xml version="1.0" encoding="utf-8"?>
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
android:src="#drawable/background"
android:tileMode="repeat" />
Use that drawable as background instead of #drawable/background
according to this answer If you want your ImageView fill your RelativeLayout,use align parameters for ImageView.
you can put all of your views to a LinearLayout and set align parameter to your background ImageView:
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/my_background"
android:scaleType="centerCrop"
android:layout_alignTop="#+id/my_views"
android:layout_alignBottom="#+id/my_views"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/my_views"
android:orientation="vertical" >
<!-- stuff -->
</LinearLayout>
</RelativeLayout>
Its smart and 100% working answer is to set the property scaleType of image view !
android:scaleType="fitCenter"