DIP is short for Density Independent Pixel. It is used by the Android system as a unit of measurement to make GUIs fit on different screen sizes with scaling. This allows the developer to create a single interface for different screen sizes.
Questions tagged [density-independent-pixel]
119 questions
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vote
2 answers
Why displayMetrics.density is wrong?
On my Pixel 7 device, I want to know how many density-independent pixels (dp) I have. So, I use this formula:
displayMetrics.widthPixels / displayMetrics.density
However, I have an issue because displayMetrics.widthPixels = 1080 (which is okay) and…
zeus
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1 answer
React-Native: Text is rendering differently in different mobile phones
This is the style I ma using to render Text
TEXT_B16: {
fontFamily: 'OpenSans-Bold',
fontWeight: fontWeight,
fontSize: 16,
lineHeight: 22,
},
And output is as follows,
Samsung
One plus
iPhone 12 Pro Max
iPhone 6
even though…
ThinkAndCode
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1 answer
Changing Transparent Background to White in Matlab
Please consider the following piece of Matlab code:
MyImage = imread('a.png');
imwrite(MyImage, 'a.jpg', 'jpg');
The problem I am facing is that a.png has a transparent background. When I save it as jpg, it saves the image with black…
Haider
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is galaxy s10 (xxxhdpi) scaled 4x or 3.5x?
https://material.io/resources/devices/ (which is not maintained anymore) has
3.5x for xxxhdpi google pixel xl
4x for xxxhdpi galaxy s8
https://material.io/blog/device-metrics lists only 4x for xxxhdpi
https://reactnative.dev/docs/pixelratio lists…
eugene
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0 answers
Negative margin on different devices
Source code can be found at : https://github.com/AliRezaeiii/Contacts
I have following layout in my Activity :
Ali
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Difference in items height at layouts with same DP value
I am running 2 emulators:
360x640 mdpi (1x)
1080x1920 xxhdpi (3x)
Using dp values when defining attributes for views should result in covering same physical space, but as the result they look different.
What might be the reason for such outcome?
ashaneen
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1 answer
How to set text size depending on the screen dimensions?
I need to set all the text content of the application depending on the screen dimensions. I mean buttons, textviews etc... For example, If i execute the app ina Pixel C tablet, the buttons text size and the textviews text size must be very big, and…
NullPointerException
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5 answers
Same text size but it larger on other devices
I have a TextView in which I programmatically setup the text size in 'SP'.
tv.setTextSize(spToPx(5, context));
public static int spToPx(float sp, Context context) {
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, sp,…
Oleg Golomoz
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1 answer
Scaling drawables not to density (dip), but actual pixel resolution (px)
I've been working on an app where it is important that drawables are always the same size relative to the display's width, e.g. always 1/8 of the screen height in pixels. I understand how density independent pixels work, but as their goal is to…
IchBinGrumpig
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1 answer
Dp in xml doesn't match java dp-px conversion
I need to set sizes of text, margins or images in java rather than in xml due to loop repetition.
When I set 20dp for text in xml file, result is 3x smaller than same 20dp converted to px with this (Material design guide based) conversion method:
dp…
Govean
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1
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1 answer
How do you begin developing an Android app for multiple devices sizes/densities?
I've asked a question similar to this but thought I would ask a more general question to get a wider range of input.
I ask this question because the last two apps I've developed, I threw all image resources in the drawable-hdpi folder, didn't deal…
joepetrakovich
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1
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2 answers
Android DIP size wrong
This one is bedeviling me. What am I overlooking? I want a button exactly one inch wide, on any density screen. I declare it in the layout like this:
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0 answers
Pixel data changes after writing to JPEG file
I am performing steganography on JPEG images. I am using DCT coefficients to hide data. I do the following steps:
Read input image into BufferedImage
Get an 8 x 8 block from BufferedImage
Apply forward DCT to get DCT coefficients
Embed message bits…
saim2025
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1
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Device Independent Pixel Scaling In Browser
I was following a video tutorial and it stated that the browser in a chromebook has a viewport width of 1280 DIPS and in this case they stated that the 1280 DIPS will be scaled up to the 2560 hardware pixels of the chromebook when the page is…
user5228393
1
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2 answers
Two screens with the same dimensions but different resolutions
Assume we have two android devices with the same screen dimensions, but with different resolutions. Is the following true or not: if dp unit is used to set the sizes of all views, then both screens will display the same amount of contents and the…
boring91
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