I've often seen that I've you place an ImageView in a RelativeLayout in Android, and set its layout:width to match_parent, it won't size the image and make it bigger to fill the width, instead it show some white space besides the image. Why is that happening and how can I handle that?
Related
I design a Android Layout where only a cropped part of an Image should be displayed within a frame. I do this with an ImageView within an RelativeLayout. The ImageView lies below the RelativeLayout and is larger than the RelativeLayout. The ImageView is set android:scaleType="centerCrop".
Now I need to shift the Image behind the Frame (the RelativeLayout) in order to display another part of it inside the Frame. How is this possible? A setY() on the ImageView shift the cropped Image, but the Image should first be shifted and cropped afterwards.
Have you tried paddingbottom for imageview?
paddingtop makes image to occupy less height and it gets center cropped in remaining portion
you can align you imageview with relative layout and can show rest of the view
I am trying to set an image in my main page to fill up the upper space of the page (as shown below).
But, when I try to test it with different device, the space is not filled properly (as shown in image below). With Pixel3a, there are extra white space at the top and bottom of the image; whereas with Pixel3a XL, there are extra white space at the start and end of the image.
I set the imageview to have the width to match with the parent, and the height to wrap the content, but I don't understand why the "wrap content" is making a space larger than the content itself (which is the image), which led to this extra white space?
I guess for the case of the Pixel3a XL, even with setting of the width to match parent, the image still did not match the parent, which led to the extra white space at the start and end of the image. Can someone please point out how can I fix this? I want the image to fill the space properly like in the case of Pixel2.
My code shown below:
Add this attribute line inside your <ImageView> tag:
android:scaleType="fitXY"
If the aspect ratios of the image and the ImageView do not match, you will see white space. You can set the ScaleType of the ImageView or you can set android:adjustViewBounds="true" to match the aspect ratio of the ImageView to the image.
I have a RelativeLayout which I expand (vertically) when clicked on. This RelativeLayout have a background image. This is implemented by adding a ImageView to the RelativeLayout.
I want the Image (and ImageView) to be larger than the RelativeLayout, so when the RelativeLayout is expanded the background (ImageView) is not stretched but instead just showing a larger crop of ImageView.
I would really like to have a ImageView larger than the RelativeLayout and then just expand the RelativeLayout instead of changing the size of the ImageView when the RelativeLayout is expanded. The reason for this is that the expansion uses a smooth animation and changing the ImageView for each frame leads to a significant overhead since it resizes/crops the image for each frame to match the current size of the RelativeLayout.
Contained Views can't be bigger than their parents.
But the image in an ImageView can be bigger than the View.
Just don't set it as a background (which will be stretched), but as a src.
NO:
android:background="#drawable/my_bg"
YES:
android:src="#drawable/my_bg"
You can play with the scaleType attribute (http://developer.android.com/reference/android/widget/ImageView.ScaleType.html) for fine tuning
I have a background image, which is simply colored panel such as silver purple, etc.,
This background image is set as andorid:background of RelativeLayout, which consist of a ImageView
I want that imageview's image resource to be appear like in center of the background image.
I tried alignParentTop and marginTop to position the combo image in center.
It works as expected, but when trying on different devices, as marginTop is hardcoded such as 10dp,, or 5dp, the alignment looks differently on different devices with different resolution.
I have even created various dimens.xml files for various configuration with various marginTop dp values. Still it only works on specific devices and doing fro all devices is obviously impossible. So i need to set or align the background and foreground images such that foreground image is centered over background image.
Note: Using Framelayout is not of my concern. I want this by RelativeLayout.
On the ImageView and the parent RelativeLayout, remove all of the padding and margin stuff you have, then add android:layout_centerInParent="true" to the ImageView. If you know the height and width of the image in the ImageViewbeforehand, set the ImageView to match it identically (in dp's). Otherwise, try setting the ImageView height and width to wrap_content and potentially android:adjustViewBounds="true".
Things looked quite simple first but in the end the result is not good.
I have an image which has a width larger than screen's width. So I need to scale it down in my imageview. I looked over the ScaleType options and tried them all but none is ok. First "center" only displays the image centered on the layout, no scaling done. "fitCenter" scales the image to fit in my layout but has a major drawback: the height of the item remains as it would have the large image in it. Take a look at the second screen in the attached image. How can I force the list item, to reduce its height to wrap both the text and the image ?
Use the scaletype which seems best to you ( I guess you like what you see with fitCenter). The additional thing that you must do is
android:adjustViewBounds="true"
in your ImageView.
or you could go with FitXY but sometimes the result is not exactly what you want.
use android:scaleType="fitXY"
Could you use FitXY?
This would work if you knew the size of the area you were putting the image into.
CentreInside may also work, I've used this to scale down images, but I think it depends if you've control of the size of the bounding layout element.
You either need to set android:height = "wrap_content" on your outer container, or set static height of TextBox and give ImageView android:weight = "1" so that the ImageView takes remaining space in container.