I'm trying to show an image scaled while preserving its aspect ratio, but at the same time align it to the bottom.
Using android:scaleType="FitXY" causes the image to be centered vertically and horizontally, so it doesn't get aligned to the bottom.
Using "FitEnd" causes the image to be aligned to the bottom right corner, so it isn't centered horizontally.
Is there any way to get around this? Maybe using some matrix to scale it (scaleType="matrix")?
EDIT: To clarify a bit on what it is I want exactly...
I have an ImageView, whose layout (location, size, gravity, etc.) I can't change. I want to load a bitmap as its source image, but have that bitmap get scaled to the ImageView's size (preserving the aspect ratio of the bitmap) and then aligned to the ImageView's bottom.
EDIT: After trying everything I could think of (and everything that was suggested here), we ended up sub-classing ImageView and doing the scaling/translation ourselves in onDraw.
Try using android:scaleType="centerInside" instead of fitXY.
Layout being used in a Blrfl Labs application to scale an image to fit the area the layout gives it without hosing up the aspect ratio:
<ImageView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1.0"
android:gravity="center"
android:src="#drawable/blah_blah_blah"
android:scaleType="centerInside"
android:adjustViewBounds="false"
/>
You can use
android:layout_centerHorizontal="true"
android:scaleType="fitEnd"
if your ImageView is inside a RelativeLayout.
Untested, but try adding:
android:layout_gravity="bottom|center_horizontal"
to your ImageView along with FitXY scaling.
Related
I am trying to scale an image inside an ImageView, but I want the image to get cropped if it goes outside the view boundaries. This is what it looks like. The image just gets rendered outside the View boundaries. I have tried all the different forms of android:scaleType and android:adjustViewBounds but none of them work to keep the image inside those boundaries. Basically what I want to have as an end result is an image that can zoom in and zoom out but when you zoom in, the image gets cropped to fit in the space. Maybe this is one of those things that is just not possible?
android:layout_width="wrap_content"
android:layout_height="wrap_content"
means that the view will adjust its size in acordance with the content. If you want the image to crop, specify those, e.g.
android:layout_width="40dp"
android:layout_height="40dp"
scaleX and scaleY is scalling the image. Removing both will solve your problem. Also give it a fixed height and width.
Edit these lines
android:layout_width="50dp"
android:layout_height="50dp"
And remove these lines
android:scaleX="2"
android:scaleY="2"
Please don't mark this a duplicate, as I am unable to find the solution.
Hi, I am trying to add src image with some background color
Here is what I am doing
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="20dp"
android:background="#drawable/bg_layout_corners"
android:backgroundTint="#color/color_fbfbfa"
android:gravity="center">
<ImageView
android:id="#+id/iv_dashboard_niggle"
android:layout_width="wrap_content"
android:layout_height="200dp"
android:layout_centerHorizontal="true"
android:layout_centerInParent="true"
android:layout_centerVertical="true"
android:scaleType="centerInside"
android:background="#color/colorAccent"
android:src="#drawable/niggle2_3_3_3" />
</RelativeLayout>
and here is the output I am getting
When I try to decrease the width or height of imageView, the actual image is placing at the center and some border is visible.
I also checked for scaleType="center", this is also not working
Please help me.
Hope this solves your problem.
iv_dashboard_niggle.setScaleType(ImageView.ScaleType.fitXY);
Set wrap_content as height for your relative layout.
Then the space will go.
The image that you wanted to set in a image view needed to be in the same aspect ratio to fit exactly without applying scaleType...
for example
If you want to set a square image that have height and width ratio 1:1 then ImageView ratio needs to be 1:1
Well but also we have ScaleType if images not according ratio then we can set scale type to match the size of image view by resizing our image
In your case it's completely depend on what you want to show.
If you don't want background border then simply set background color to transparent by using
android:background="#android:color/transparent"
Best way is define ImageView size according aspect ratio if you don't want to use scale type
I am having a layout in with root Relative layout and and ImageView inside it when i set it source the Image is not fitting inside into Image view leaving Top and and bottom padding which is in preview but not defined in xml. I want to know how to stretch image to fit completely in ImageView.
XML:
<?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:background="#fff">
<ImageView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="#drawable/place_demo_2"
android:id="#+id/back_ground_place"
android:layout_alignParentBottom="true"
android:layout_marginBottom="400dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Manila Main"
android:id="#+id/visit_place_title"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="68dp"
android:textColor="#fff"/>
</RelativeLayout>
Using Code:
YourImageView.SetScaleType(ImageView.ScaleType.FIT_XY);
Using xml:
android:scaleType="fitXY"
See also below snapshots for other alternative options.
Use android:scaleType in your ImageView
android:scaleType="fitXY"
Check other available options for scaleType here
You're going to want to use android:scaleType in your XML file. There are several options you will probably want to play with until you get the exact product you are looking for but, if you don't care about aspect ratio, it sounds like you might want to use android:scaleType="fitXY".
You can find more information here:
https://developer.android.com/reference/android/widget/ImageView.ScaleType.html
Below are the rest of the options:
ImageView.ScaleType="CENTER"
Center the image in the view, but perform no scaling.
ImageView.ScaleType="CENTER_CROP"
Scale the image uniformly (maintain the image's aspect ratio) so that both dimensions (width and height) of the image will be equal to
or larger than the corresponding dimension of the view (minus
padding).
ImageView.ScaleType="CENTER_INSIDE"
Scale the image uniformly (maintain the image's aspect ratio) so that both dimensions (width and height) of the image will be equal to
or less than the corresponding dimension of the view (minus padding).
ImageView.ScaleType="FIT_CENTER"
Scale the image using CENTER.
ImageView.ScaleType="FIT_END"
Scale the image using END.
ImageView.ScaleType="FIT_START"
Scale the image using START.
ImageView.ScaleType="FIT_XY"
Scale the image using FILL.
ImageView.ScaleType="MATRIX"
Scale using the image matrix when drawing.
either make width of Imageview to wrap_content
or
you have to set android:scaleType of Imageview to fitXY
Add to ImageView attr android:scaleType="fitXY"
That's because you have aligned the ImageView to parent's bottom BUT there is a margin at the bottom of 400dp.
Long story short, remove
android:layout_alignParentBottom="true"
android:layout_marginBottom="400dp"
Also set the layout_height to match_parent if you want the image to fill the whole screen.
P. S. Also fill_parent is deprecated, so use match_parent instead.
I have an ImageView that is defined in the following way:
<ImageView
android:id="#+id/cover_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_below="#id/title"
android:layout_above="#id/divider"
android:adjustViewBounds="true"
android:src="#drawable/image_placeholder"
android:scaleType="fitStart"/>
Now after downloading a new bitmap I change the drawable. The image now appears in the top left corner of the ImageView. Is there a way to have the image fill up the whole height that is possible and then adjust the width of the view to enable scaling the image without changing the ascpect ratio?
The image fills up all the space on a standard screen but on a WVGA Resolution the image takes only about half of the actual height of the ImageView.
If I'm understanding you correctly, what you need to use is the centerCrop scaleType. fitStart scales the image proportionally, but neither the width nor height will exceed the size of the view, and the image will, as you said, have a top|left gravity.
Using centerCrop scales the image proportionally, but causes the shortest edge of the image to match the size of the view, and if there is additional data on the long side that does not fit, it is simply cropped off. The gravity is, of course, center. The below worked for me:
<ImageView
android:src="#drawable/image_placeholder"
android:id="#+id/cover_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="centerCrop"
/>
You can change scale type to fitXY via call to
imageView.setScaleType(ScaleType.FIT_XY);
simply do it in xml like
android:scaleType="fitXY"
Basically the answer here is that there is no predefined value for what you are trying to achieve. The solution is to create a Matrix that fits to your needs and call setImageMatrix(matrix) on your ImageView.
I have an ImageView, and I want it to be clickable. The image itself is only 32x32 pixels, but I want the clickable region to be larger so it's easier to hit. I was hoping I could set the layout margin values to increase the size of the imageview's clickable area:
<ImageView
layout_width="32dip"
layout_height="32dip"
layout_margin="20dip" />
That doesn't work, what I could do is just recreate the image resource to have a larger transparent region around it. That's a bit annoying because it's hard to tweak if I ever need to change the clickable region. It's not just a single png either, it's a statelistdrawable so I have to resize 3 different pngs if I ever need to tweak the clickable area.
Anything else I can do?
Thanks
Use padding. layout margins are used if for inserting space outside the boundary of the view.
for equal padding on all sides
<ImageView
android:padding="20dip" />
or to set the padding on each side
<ImageView
android:paddingLeft="10dip"
android:paddingRight="15dip"
android:paddingTop="23dip"
android:paddingBottom="12dip" />
Hope that helps !
Instead of resizing the image (Peter Knego's answer) or increasing padding (Saimon's answer) I suggest to set the minWidth and minHeight attributes in combination with scaleType="center":
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minWidth="40dp"
android:minHeight="40dp"
android:scaleType="center"
android:src="#drawable/your_image" />
That makes sure that small images have at least a size of 40x40dp while the image is not up-scaled if it's smaller. If one day the image is going to be replaced with another image larger than minWidth and minHeight it will not grow larger than 40x40dp as it gets downscaled. Thus a minimum clickable dimension of 40x40dp is always guaranted and the image is always displayed nicely.
Suggestions (never tried it myself):
Create ImageView as large as you want than put image into it without scaling
ImageView.setScaleType(ImageView.ScaleType.CENTER).
Brute force approach: create new larger png that has original image centered and the rest of it is transparent.
Use like below; where width/height is your touch radius
<ImageView
android:id="#+id/editProfile"
android:layout_width="32dp"
android:layout_height="32dp"
android:padding="8dp"
android:background="?attr/selectableItemBackgroundBorderless"
android:src="#drawable/ic_edit"
android:scaleType="fitCenter"
/>
In the above code, I wanted my src size to be viewed as 24dp width/height. And touch radius of 32dp. so I had used padding of 8dp.