Calculate aspect ratio of image android

In this tutorial, I will show how you can crop image with android default crop image functionality with keeping the aspect ratio with the device screen. I am not discussing the way to crop as there are many tutorials on it. Suppose we want to pick and image set is as wallpaper of the app. So we need to crop the image keeping its ratio similar with the device resolution. This is what looks like after putting all together. This allow user to keep the aspect ratio instead of free selection.

I am newbie in android.

How to create mobile games for different screen sizes and resolutions

I have a trouble in processing image in android. I create an app to crop image then display cropped image on screen. Not clear! So do you want to crop the image keeping the aspect ratio of your device? Let me know more! Sorry because i describe not clearly. For ex: I wanna crop image with ratio width:height is so the cropped image returned to display in screen must keep ratio If i wanna crop with ratio so the equivalent cropped image must keep ratio In general,i wanna crop with dynamically ratio and get the exactly ratio i cropped.

I got you now. Sorry for late reply. To be more precise, if you want to select any aspect-ratio as you want before performing crop, there should be an input option for user to give the ratio i. Let me know if you have any more question.With all the different device form factors today, cross-platform developers are facing the challenge of delivering an equal user experience to every user. This includes different resolutions as well as different aspect ratios, especially when it comes to the countless Android phone manufacturers.

I will show you how to master this challenge with ease, using Felgo. The theory behind the solutions I present might also be useful if you are using any other framework, so I suggest you read through this guide anyway! Our first question was how to make sure the game logic and mechanics are equal and fair on any device. Well, we could re-write our code from scratch for any different screen sizes. Or we could re-calculate any x, y, width, height, velocity etc.

Yeah this does sound like a lot of work. We want to have a single code-base, that is easy to read and maintain.

Thus instead we can make use of a neat principle called Content Scaling. It pretty much means that you design your game once for the lowest resolution that you want to support called the logical resolutionand just scale it up as a whole on larger resolutions, to offer an equal gaming experience. With Felgo, the default logical resolution is x for landscape mode.

With Felgo, the Scene component takes care of that scaling mechanism automatically. Alright, that one was easy. However what happens if you take an image with 40x40 and scale it up to e. Right, it will get blurry. The next chapter deals with this issue don't worry, it's easy as well.

We want to avoid images getting blurry when scaling up the scene.

calculate aspect ratio of image android

An easy solution would be to use a really big image, so effectively it will be scaled down on lower resolution devices. But is this solution ideal? Of course not, this chapter would be way too short that way! What happens with using only big images, is that we might run out of memory very fast, especially on lower-end devices.

We are loading all those big images, even though we are displaying them very small, that is a huge waste of precious memory. A really good solution is to load a different version of your image, depending on the size it is needed on the current device.

This technique is very common in mobile development, and Felgo supports this in an elegant way, with the MultiResolutionImage component. All that is left for you to do is to provide images with different sizes to select from, typically 3 versions, for SD, HD and HD2 resolutions. If you do not provide an asset in hd or hd2 resolution, the next folder is chosen automatically.

calculate aspect ratio of image android

So you can start prototyping during development with just a single image version and create the other resolutions later. To summarize this, Felgo adds support for dynamic image switching based on the screen density and size.

This allows you to:. So far so good, now let's move on to devices with different aspect ratios, as so far we only had a look at x, x, Today, especially on Android, we have a huge variety of device ratios, from to and anything in between.Use the form below to calculate the missing value for a particular aspect ratio. This is useful, for example, when resizing photos or video. Say you have a photo that is x pixels, but your blog only has space for a photo pixels wide.

To find the new height of your photo—while preserving the aspect ratio—you would need to do the following calculation:.

Note: this is the new, improved version. You can still use the original aspect ratio calculator if you prefer.

Aspect Ratio Calculator

All rights reserved. Enter either a new width W 2 or new height H 2 on the right to calculate the remaining value.

Change any of the values at any time, or reset them to the starting values. Formula Say you have a photo that is x pixels, but your blog only has space for a photo pixels wide. Was this page useful to you? Briefly describe what you tried to accomplish on this page. Leaving a comment lets you see a sample of comments left by others Glad you liked it! Consider making a small donation to help pay for my web hosting? A few previous comments you can't make this stuff up!

I even bookmarked it : — I think that will be very useful - maybe I can finally throw away my proportional slide rule thing Always use it to resize pics and videos to embed on my blog. I know I could do it manually, but you make it so easy The correct answer!

It's so easy! I am deffently using it again. Well done, and thank you very much. I bet i've used this pageYou might not be aware of this fact, but every frame, digital video, canvas, responsive design, and image often has a rectangular shape that is exceptionally precise in proportion or ratio. The ratio has to be well-defined to make shapes fit into different and distinct mediums, such as computer, movies, television and camera screens.

To fit ratios in a variety of mediums is often a challenge to designers, particularly if they have to crop and convert content. Luckily, having an aspect ratio calculator makes things easier. If you are working on a digital video, it is essential to initially compress the files of the digital video in order to get the accurate dimensions or aspect ratios of the video.

This requires a lot of calculations. To get exact formats for your video, just enter one dimension and the calculator will compute the other dimension. For the record, the proportional relationship between the height and width of a rectangle is what is aptly referred to as an aspect ratio.

Aspect ratio calculations matter a lot depending on whether it is an image, design project or a digital video you are working with. Aspect ratios are largely defined by numbers, as in a mathematical ratio that clearly defines how many inches high and how many inches wide your video, image and design projects should be. While aspect ratios are measurements of the height and width, they are often reduced to the smallest usable ratio in order to fit perfectly in every medium.

To achieve a perfect aspect ratio, you must employ the use of an aspect ratio calculator. It reduces any margin of error. Check the what is aspect ratio post. Visit ProjectorScreen. Calculate international shoe sizes with the shoe size converter. When shopping for shoes in Europe you might have noticed the different shoe sizing system. The shoe sizing guide can help you understand and measure your feet correct. You can also download and use the printable shoe size chart to accurately check your shoe size.

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Just as our aspect converter, we love to create valuable tools for our users. We prefer transparency, but the taxi industry is always finding new ways of charging their riders more. Instead, you can use services like uberestimator. Ratio height. Pixels width.

What is "Retina"? Pixel Density or PPI as Fast As Possible

Pixels height. Shoe Size Charts Calculate international shoe sizes with the shoe size converter. Visa Free Countries Depending on which passport you have, you can freely visit visa free countries without any additional paper work. Taxi Fare Estimator Just as our aspect converter, we love to create valuable tools for our users.Posted by: admin November 7, Leave a comment. But what about the height? When Android scales the image, will it keep the aspect ratio?

What I find out is that there is some white space at the top and bottom of the ImageView when Android scales an image which is bigger than the ImageView.

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Is that true? If yes, how can I eliminate that white space? Yes, by default Android will scale your image down to fit the ImageView, maintaining the aspect ratio. You can use a background and a source at the same time though, which can be useful for things like displaying a frame around the main image, using just one ImageView.

You should also see android:adjustViewBounds to make the ImageView resize itself to fit the rescaled image. This then affects how other Views are laid out around the ImageView. Then as Samuh wrote, 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!

Just remember to look at the layouts in the emulator itself or an actual phone as the preview in Eclipse is usually wrong. See android:adjustViewBounds. Set this to true if you want the ImageView to adjust its bounds to preserve the aspect ratio of its drawable. To anyone else having this particular issue. If you want an ImageView that both scales up and down while keeping the proper aspect ratio, add this to your XML:. It took me a while to get this working, but this appears to work in the cases both where the image is smaller than the screen width and larger than the screen width, and it does not box the image.

Take a look at ImageView. ScaleType to control and understand the way resizing happens in an ImageView.

calculate aspect ratio of image android

I have an image smaller than the screen. To have it stretched proportionally to the max and centered in the view I had to use the following code:. Have in mind though, that if you have a relative layout and have some elements set to be above or below the ImageView, they will be most likely overlapped by the image.

For anyone of you who wants the image to fit exact the imageview with proper scaling and no cropping use. I have an algorithm to scale a bitmap to bestFit the container dimensions, maintaining its aspect ratio. Please find my solution here. Tags: imageview.How to Resize Images video tutorial. When talking about how big certain images need to be, some of our articles say they need to be a certain aspect ratio. This is a width to height ratio, such as for big screen TVs.

The New CMS requires photos to have a aspect ratio. This generally means you will need to crop and resize your images to fit this ratio. Below are two tools you can use for this. These are not made by TeamUnify, so use at your own risk.

calculate aspect ratio of image android

If you have Photoshop or some other image editing tool and are comfortable using it to crop images, use this tool to enter an aspect ratio, then calculate the needed height for a given width. All Rights Reserved. How to Resize Images to Correct Aspect Ratio How to Resize Images video tutorial When talking about how big certain images need to be, some of our articles say they need to be a certain aspect ratio.

Calculate Aspect Ratio If you have Photoshop or some other image editing tool and are comfortable using it to crop images, use this tool to enter an aspect ratio, then calculate the needed height for a given width. Enter the image width in the W2 field, such as It will automatically enter the correct height in the H2 field, in this case Crop your photo using the W2 and H2 numbers and save it. It is now ready for upload to your TU site. Crop Image to an Aspect Ratio This tool lets you not only enter an aspect ratio, but upload and crop an image as well.

Under step 2, click the Fixed Aspect Ratio button, then enter that ratio, such as 5 and 2, and click Change. Drag a rectangle over the image to select the area you want. Move the selection as needed, then click Crop. You may optionally change the parameters in stepssuch as the image size and quality.

When finished, at the bottom click Resize Image. Below that, click Download image. Navigate to your Finder or File Explorer, then rename "Webp. Website Editing: Add custom form. Automatically Archive or Manually Archive News. Website Design - Creating a Tab as a draft before releasing it to the public. Wrapping text around a photo. Moving page contents to another page or tab. Website title is pushing down USA swimming badges [Chameleon].

How do I see who has used the Swim Today Widget? Benefits of switching to the Chameleon template. Website Editing: Supported file extensions when uploading. Why doesn't the slideshow load in Internet Explorer? Embed a PDF in a web page.

How can I add text to my pictures? How do I embed a PowerPoint presentation on one of my pages? Website Editing: Add a slideshow to a web page. Where to edit "More Information" pages. Website editing: Make a tab or sub tab redirect to another page or site.This Aspect Ratio calculator converts pixel dimensions to aspect ratio. This online free tool helps you to calculate aspect ratio value of an image or object.

The conversion can be in done in both ways, pixels to aspect ratio and aspect ratio to pixels. This screen resolution calculator provides an easy and powerful tool that can convert image ratio to pixels resolution and pixels to ratio dimensions. To calculate aspect ratio you need to provide Pixels Width and Pixels Heightthe aspect ratio will be calculated automatically.

To calculate pixel resolution, you need to provide Ratio Width and Ratio Heightthe Pixels Width and Height will be calculated automatically. Also, you can choose a ratio from Common Ratios dropdown, the respective pixels resolution width and height will be shown.

The aspect ratio is the ratio of a geometric shape in different dimensions. It represents the relationship between width and height separated by a colon x:y. Generally, Aspect Ratio is used to describe the size of images, video, and screen size.

The resolution is the number of distinct pixels in each dimension that can be displayed.