Let's say I have a 100px x 100px button defined in Flutter. The size is hardcoded, and not a percentage of screen size. I then created an apk, viewed the app screen on my phone, took a screenshot and transferred it to my laptop to check the actual size of the button. It's 263px x 263px.
My phone's screen size is 1080px x 2160 px, and the resolution is 401 ppi. Am I correct in assuming that scaling from code to app should happen by a factor of 2.5 (401/160)?
Or does scaling happen based on device pixel ratio, which for my device is 3.375?
In actual case, the scale factor I am getting is 2.63. How does this work? Moreover, how do I create an app with pixel perfect layout?
I'm programming an application with React Native (v0.45.1) and using my S6 as a testing device. I'd set a background image which matches exactly my cellphone resolution size but its looking huge on screen, enough to only show me a small chunk of my background image.
Just for debugging purposes I'd added this lines in my render method to get my device dimensions:
let {height, width} = Dimensions.get('window');
console.warn(height, width);
and the output I got from those lines is: 360 x 640. How can that be possible? I'd taken a screenshot and shared to a coworker and the picture size is: 1440 x 2560, which is exactly my cellphone resolution.
A few days ago the same happened to me at work, for the record I was working with a tablet that time and not using my cellphone. Any ideas about what is happening or am I missing something? Thanks in advance.
The dimensions you get from Dimensions are in dp (for Android) and the picture size is in px (pixels).
Basically, you work in dp on your app and the actual pixels values will vary between devices depending on their pixel density. This means their pixels might be smaller/bigger, thus dp represents the real-world-uniform-pixel-size if you will.
I have one image which i need to set as device wallpaper from drawable folder.
I created one demo application in which oncreate of activity i just wrote code for set wallpaper of device as that particular image.
But when I set this image as wallpaper its either zoom or cropped. I want image should fit on screen size. In some devices it works in some it does not.
Moreover when i rotate my device at that time also wallpaper gone or some part of that cropped.
I have image resolution is 600*1024 pixels. I have samsung galaxy tab 2 that is also have same Size 600 x 1024 pixels, 7.0 inches (~170 ppi pixel density).
But its not working. Please help me to sort out this issue.
Thanks
<uses-permission android:name="android.permission.SET_WALLPAPER_HINTS"/>
permission in manifest
I am trying to do the following steps -
Read an scaled image from assets and display in an imageview. - Successful
Modify the image - Successful
Save it to the SD card.- Not successful.
The resolution of the image is 4608 x 3456 with 300 ppi.
Since i was getting an out of memory exception on reading the image, i have scaled down the image to 800 * 800 while reading it using BitmapFactory.Options .
Now when i modify and save the image to SD card , the resolution of the image is 800 * 800 .
I want to get the exact same resolution as the resolution of the image in assets.
How to achieve this ?
Any help will be highly appreciated.
This SO helped me to create Image of required resolution i tried creating full hd image(1920×1080) i'm not sure whether you can create 4608 x 3456 resolution image.
On the developer's console when you go to publish your android application the screenshots are needed with the following specifications,
320 x 480, 480 x 800, 480 x 854,1280 x 720, 1280 x 800 24 bit PNG or JPEG (no alpha) Full bleed, no border in art.
Now on this link it says, "You may upload up to 8 screenshots."
My questions is,
What are the sizes for the last five screenshots? - The first three being - 320 x 480, 480 x 800, 480 x 854
Is it 480 x 800 OR 480 x 854 for the second to eight screenshot or is it that second should be 480 x 800 and third should be 480 x 854 and fourth - eighth?
Are the sizes 1280 x 720, 1280 x 800 only for tablets and are they optional?
When I publish apps I use the following screenshot sizes:
Phone: 1080 x 1920 I prepare 8 images with title, some fancy background and a screenshot inside a smartphone mockup. So it's more than a simple screenshot. It gives some nice branding and helps you to stand out from other apps out there.
Tablet 7": 1200 x 1920 - I do actually a couple of raw screenshots of 7" emulator so that the user could know how the layout will appear on his device. No fancy design with titles etc.
Tablet 10": 1800 x 2560 - same thing here, just a couple of raw screenshots.
all in .png format.
Hope this helps.
We require 2 screenshots.
Use: Displayed on the details page for your application in Google
Play.
You may upload up to 8 screenshots each for phone, 7” tablet and
10” tablet.
Specs: Minimum dimension: 320 pixels. Maximum dimension: 3840 pixels.
The maximum dimension of your screenshot cannot be more than twice as
long as the minimum dimension. You may use 24 bit PNG or JPEG image
(no alpha). Full bleed, no border in art.
We recommend adding screenshots of your app running on a 7" and 10"
tablet. Go to ‘Store listing’ page in your Developer Console to add
tablet apps screenshots.
https://support.google.com/googleplay/android-developer/answer/1078870?hl=en&ref_topic=2897459
At last! I got the answer to this, the size to edit it in photoshop is: 379x674
You are welcome
It has to be any one of the given sizes and a minimum of 2 but up to 8 screenshots are accepted in Google Playstore.
You can upload up to 8 screenshots. Those screenshots must be one of the dimensions (sizes) you listed; you can have multiple screenshots of the same dimensions.
The files need to be in a JPEG or PNG format of 24 bits, in a 2:1 ratio if it is a portrait and a 16:9 ratio for landscapes. Be careful that if you go for different sizes: the maximum size should not be more than twice bigger than the minimum size.