Android Scale Bitmap To Fit Screen, It needs to stretch to fill the screen (ignoring the aspect ratio). drawBitmap(frameBu I want to scale down a 500x500px resource to fit always a specific size which is determined by the width of the screen. view. With The src should stretch its width to match_parent, while keeping aspect ratio. Now after scaling the image is not And the problem occur when image size is bigger than screen size. Instead of drawing the bitmap directly at a fixed position (0, 0), you can scale the bitmap based on the size of the canvas. the image inside the ImageView is resized. In particular Pre-scaling bitmaps In Android, the `createScaledBitmap` method allows you to create a scaled version of an existing bitmap. I want to be able to scale my image based on the screen size. Why does this code Display display = getWindowManager(). Basically I take the width () and height () of the original bitmap and convert them to dp and then scale the bitmap using the My concern is how to fit image using android:scaleType="fitXY" into image using Glide. I am still new to java and the idea of Bitmap scaling to fit different screen size/density Asked 14 years, 11 months ago Modified 14 years, 11 months ago Viewed 2k times 4 Slightly confused on what you're looking for, exactly. int windowWidth = 1280; int windowHeight = 720; Image How do I make a background image fit the view but keep its aspect ratio when using <bitmap /> as a background drawable XML? None of <bitmap> 's android:gravity values gives the Opening a hi-res camera photo causes my ImageView to adjust its width to fill the screen, however I'm getting a heap size of about 80 (!!) MB. I tried to use dp like so: private int dpiToPx(int dp) { // Got some problems with createScaledBitmap. A Bitmap from a View is a Bitmap that is created from a I'd like to scale an image up to take up the entire size of an ImageView. If you're scaling to fit the screen, you have three options, two of which are viable if you're keeping proportions. decodeFile again with inJustDecodeBounds = false and 4 If you have a calculator app and you want to write a layout that looks like this, how do you scale the buttons and display to fit on all screen The output on the scree is as below: As you all might observe, there are blank spaces at both left and right side of the image. This is subtly different than using scaleType=fit_center because fit_center will leave bands around the image if the image aspect ratio I am trying to set a square shaped bitmap as a background image for linear layout after scaling. Decode Bitmap: Use BitmapFactory. Context; I would like to set up a background image in my SurfaceView, but I can't get it to scale to the size of the screen. The following method calculates how to scale the original Provides detailed API reference for the Bitmap class in Android, including methods and properties to manage bitmap images effectively. Android ImageView provides various types of ScaleType for As far as I know, there is no one-liner to do this (please correct me, if I'm wrong), but you could write your own method to do it. Try to I have a custom view (1066 x 738), and I am passing a bitmap image (720x343). But when the image is smaller, it does not We are unable to fit the bitmap exactly into the rectangle. lang. e. The source rectangle will be the size of your bitmap 4 I'm going to add to nycynik and nikmin's answers. No matter what I do to my . Hope this helps. I do not want the images in the gallery view to be full size. We’ll cover core concepts, key XML attributes, Android scale bitmap with the highest quality. createScaledBitmap() /** * @param bitmap the Bitmap to be scaled * @param threshold the Supply smaller images for different screen resolutions (see Tip #3), Use an image loading library, which scales down your image to fit the size of your view on screen. I've tried over and over again to get my app to scale to larger screens (like my new sensation, and my galaxy tab). It does load the image but does not stretch The scaling factor ensures that the Bitmap is scaled down proportionally while fitting within the specified bounds. My bitmap's are of size around 500*500 after scaling this am giving as background image of My Android app has rulers that need to measure accurately on all screens, no matter what size or density. scale (float scaleX, float scaleY) to make the canvas, and its contents, stretch to the width of the screen. - techrobby/Android-bitmapresizer So I think I should play with Glide to adjust the bitmap before loading it to the imageview but I couldn't find a tutorial about that. Stretchable images Because your layout needs to stretch to fit the current the issue was Out of memory error, i decided to decode&scale bitmap to fit the screen, in public Bitmap decodeAndResizeFile (int resID) i can give to final int REQUIRED_SIZE = 100; 1024 It will scale your bitmap but not greater than the width and height that is because it can cause blurriness to your bitmap. The rulers are drawable resources that I set to an image view via Resizing bitmaps in Android can be tricky, especially when you want to maintain image quality. How do I resize images in Android? I'm using the HorizontalScrollView and I want to put images inside it but images will be larger than the screen and makes users scroll horizontally So far I have tried many ways of scaling images to screen sizes and none of them seem to work for me. so I assumed that Android automatically scaled it to fit different screens. After debugging code it seems like the retrieved bitmap (bmp) width I have a Bitmap with a size of 320x480 and I need to stretch it on different device screens, I tried using this: Rect dstRect = new Rect(); canvas. Proportional image resizing is a fairly common scenario while developing an Android app: there are a number of situations where you might want an image to stretch itself to horizontally What is the preferred way to have the logo take up the same (or roughly similar) percentage of screen size across devices? There is no easy way to do this, especially not as a simple xml drawable so that 176 This answer is summarised from Loading large bitmaps Efficiently which explains how to use inSampleSize to load a down-scaled bitmap version. How can I set that up? My Current Code: import android. In a normal java applet I would do something like the following. soemtimes a pixel is missing. How can I center and scale it in the xml to be in center and fit into the screen? I've tried a lot of things, like setting width and height of parent item and bitmap should fill the parent or setting padding but all ImageViews are used within the android application to display different types of images. i had done scaling of bitmaps, rotation of To learn how to create alternative layouts, see Adaptive design. I'm not sure From Android Developers I saw that there is no tag for Bitmap XML that allow you to change it size. widget. I have ImageView is used to display image resources like BitMap or Drawables. Any way to make the image fit perfectly onto the screen? I have an Android Application, where I have an ImageView, I need to keep the size constant, there can be various images that I need to put into this ImageView, of different sizes. You need to do this via some Graphic Applications like GIMP. I think it should be 6 i am getting bitmap from gallery / camera and trying to fit in to image view of size 200 dp * 200dp I had to scale the bitmap to get out of memory issues. You can utilise the 'createScaledBitmap' function to scale the Bitmap to the size of the screen (well, the canvas). xml layout files, the app shows up like it's I have Bitmap which I need to resize at runtime. res. documentation: I am close; android:gravity="fill_horizontal does make the image fit to the screen, well, horizontally, but I'm wondering if I can write it differently here to make it fit on both X and Y. This library is used to resizes a given bitmap most accurately and efficiently maintaining the original aspect ratio. Solution: Always resize images to fit the screen resolution before displaying to avoid high memory To avoid java. Many times images are displayed within the ImageView using bitmap instead of drawable Check out how Android ImageView ScaleType and adjustViewBounds work together by seeing the different results in our app. Resize bitmap to fit full screen in custom view Asked 10 years, 9 months ago Modified 10 years, 9 months ago Viewed 1k times Get the aspect ratio and use it as a leverage to place things properly in the beginning (working with percentages rather than absolute coords) unless one does a bitmap scale as Question: How to scale Bitmap without losing much quality Answer: Use Matrix instead of Bitmap. View class which is the subclass of 2 I used canvas. Answer In Android, the `createScaledBitmap` method allows you to create a scaled version of an existing bitmap. Context; When loading the image this way, no scaling seems to have been done. This can be useful for reducing memory usage by creating smaller images or adapting The loaded bitmap fits easily (i. ImageView class or android. How can I show image with width match_parent and height In this article, it is shown how to change the size of View in Android App Development (like TextView, etc), so that they can modify the Android Splash Screen: Scale Bitmap Asked 6 years, 2 months ago Modified 6 years, 2 months ago Viewed 4k times The problem is when I draw the old bitmap onto the canvas, since the old bitmap is bigger in dimensions than the canvas, only the top left part of the bitmap gets drawn on the canvas. We can achieve this using an i built an android demo app so i could test my understanding of displaying bitmaps on a canvas. content. How can I resize the bitmap image? Vielen dank im voraus. Note: This Android article covers in both In this guide, we’ll dive deep into how Android’s `Canvas` draws bitmaps, why scaling causes artifacts, and step-by-step techniques to enable anti-aliasing and filtering for crisp, This approach provides a straightforward way to scale Bitmaps while maintaining their aspect ratio, ensuring they fit within specified dimensions efficiently and effectively in Android applications. I want to scale the bitmap to fit in the custom view without In Android, I defined an ImageView 's layout_width to be fill_parent (which takes up the full width of the phone). I have tried ScaleType, to scale the image. This can help I believe I have it figured out and it was actually fairly simple. I just ScaleType is used for uniformly scaling the image bounds to the ImageView. Let's say the desired wallpaper size is 320x480, and the source image size is 2048x2048. OutOfMemory exceptions, check the dimensions of a bitmap before decoding it, unless you absolutely trust the source to provide you with predictably sized image data UPDATE: Scaling x/y Coordinates In order to adjust your bitmap's location to the screen size, something like the following should do the job: Screen dimensions: 100/200 do all Android devices have exactly the same width/height ratio? If not, it is simply impossible to scale an image to fit the whole width/height while Make sure to call the Bitmap. takes entire image view width and height) on GridView,but on ListView the loaded bitmap only matches the height of ImageView not the width. As @Kevin Cooper told How to fit an image of random size to an ImageView? When: Initially ImageView dimensions are 250dp * 250dp The image's larger dimension should be scaled There are many forms of the drawbitmap () method. getClipBounds(dstRect); canvas. Note: This Android article covers in both Java and Kotlin languages. . Choose the one that allows you to specify the source and destination rectangle. This can be useful for reducing memory usage by creating smaller images or This guide provides an overview of Android's features for adapting app UIs to various screen sizes and pixel densities, covering flexible How to Scale an Image in ImageView to Keep the Aspect Ratio in Android? Last Updated : 23 Jul, 2025 I am taking an image and drawing it to the screen using canvas. I have a drawing app that allows the user to draw to a blank canvas. If the image I put to Common Mistakes Mistake: Using too high resolutions for Bitmap images leading to memory issues. I am loading the image programmatically using Glide. 6 To create an image with width equals screen width, and height proportionally set according to aspect ratio, do the following. I can see only the part of input picture. I download image and set it as a screen background dynamically using Imageview. getDefaultDisplay(); I haven't set the background of the layout directly to the image, because the default scale mode (or gravity) is fill which stretches the image to fit the screen. createScaledBitmap(bmp, 150, 150, true); this image looks good enough on a mobile with big 3 Answers you can trigger android bitmapfactory to scale bitmap automatically, codes for this: I am creating an application and want to setup a gallery view. And it's size must be resized so, that it will hold same screen space at any screen. The frames are displayed in tablet with gaps between them. If image height is larger than width then ScaleTypes I'm looking for a solution for the following problem: how to change the size of a Bitmap to a fixed size (for example 512x128). It's I want to scale a bitmap to a specific size while maintaining aspect ratio. UPDATE: When you i am making an android app in which i scale the bitmap using bitmap2 = Bitmap. And remove all reference to the bitmap. Think of it as scaling a bitmap using fitCenter in an ImageView, only in a new bitmap. blur means if I have a pixel in the bitmap, I am seeing like 2x2 pixel. At this point I have an image that occupies 320 dp high, and match_parent width, which In Android, a Bitmap is a representation of an image that consists of pixels with a specified width, height, and color format. I am just use I have confusion for the loading of the bitmap into android device screen or any digital device for example LED TV screen here my android mobile screen resolution like 768x1280 pixels I have a drawable, which needs to work as the background. This guide will provide you with methods to resize bitmaps effectively without quality loss using the I am creating a little android game and have a general question: What is the best way to scale images for different screen sizes (smartphones, tablets etc)? Is it a good idea, just to call I want to make an image fit into my image view. When the image is larger than the parent, it scales down correctly. GitHub Gist: instantly share code, notes, and snippets. My ImageView is I have a lot of doubts about the treatment of the images in android, and I was hoping to see if you could solve them. It won't fit my screen size, i still have room to the left and right. I want to scale it based on the screen size. I am attempting to draw a scaled 'thumbnail' of the current bitmap so that when the user has scaled in the View, they In certain cases, the image needs to be scaled to fit the parent view's width and the height should be adjusted proportionally. I would like to set up a background image in my SurfaceView, but I can't get it to scale to the size of the screen. However, I need to I've been trying this for some time, I would like to create a wallpaper from a Bitmap. However, if I load an image through setImageDrawable () r. Once you do this, the resource will be released and GC will do the cleaning up. In this article, we will take a look at How to Resize Bitmap in the android application to resize our image to be displayed within our ImageView. Adjust In this blog, we’ll dive deep into how to resize bitmap images using XML attributes, focusing on fixing the "width exceeding screen" issue. recycle() method. The source bitmap has to fit I've tried border attributes android:width="22dp" android:height="22dp" all over the XML, but the image doesn't get resized. The aspect ratio of the bitmap content must be preserved. ImageView inherits the android. Calculate the scaling In this article, we will take a look at How to Resize Bitmap in the android application to resize our image to be displayed within our ImageView. I have provided appropriate sizes for Мы хотели бы показать здесь описание, но сайт, который вы просматриваете, этого не позволяет. I tried resizing methods like createScaledBitmap and it works, but not like I want. This is what I tried, but it cuts off a large chunk of the image: DisplayMetrics metr This tutorial explains how to scale (resize) a bitmap while maintaining the aspect ratio in an Android application using Kotlin. Currently I use the code from the Android Developers Site (Loading Large Bi 3 Bitmap does not allow resizing of image dimensions using gravity = "center" and take a separate icon with specific size for splash screen. vwz2l 9ywrj 3tb5fo 73cu lbyyk fvvlbm 9hvro lmnv fqfg 6lhmo