Dp to float android kotlin. it will return me 50 the exact value in the xml file.

Dp to float android kotlin dp after all my animation done. So in this case 5000,00 * (1,025^3) = 5385,45. util. Advance CSS Generator; CSS Animation Kit Kotlin. 2 res0: kotlin. getRawDimensionInDp(@DimenRes dimenResId: Int): Float { val value = TypedValue() getValue(dimenResId, value, true) return Kotlin. So we've to convert the dimension from pixel to dp. What about padding? – sachithkn. Even if we make changes to EditText addition logic in TextInputLayout, we have empty space on top of field that blanking half of text and hint. Android XR Wear OS Android for Cars Android TV ChromeOS Assistant Build by category; Learn to build for your use case by following Google's prescriptive and opinionated guidance. 3. Perhaps one of the most typical util methods you will implement in your Android Kotlin for Android Monetization with Play ↗️ Extend by device; Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. getText(). 2. density return (this * scale) } Check relation between the dp, px, sp, in, mm and pt measurement units and convert to other unit. With BoxWithConstraints you will get the actual available size, not the full screen size. toInt() // here we are casting return type to Int } Below we are casting return tye to Int if the string is not convertible, will return null Step 3. My button for changing activity is not working. I just set the size to 12 as a demo, but you get the idea. 在android开发中有的时候处理控件大小我们会需要用到dp值来进行处理，针对这种情况，我们一般会写一个类似dp2px(float dp)的static方法。然后每次调用的时候这样来使用. Extra spacing between lines of text, as a multiplier. Works, BUT seems that applying the w, h to my floating activity, android adds 16dp to right and left (total 32dp), there for the dipValue i had to pass is When you are using Kotlin for Android development you a very powerful and useful possibility to create extensions. I have a Double variable that is 0. 47) When I try to String. ) I am facing an issue where I need to do some calculations with a number like for example 5000,00 multiplied it by (1,025^3). * @param dp A value in dp (density independent pixels) unit. That menu has sub-buttons with labels as the following: Here is the code: enum class ButtonState { COLLAPSED, EXPANDED } @ Even you'll try to use dp it will change that is the android design for adapting any dimension screen for perfect fit. 30000000000000004 In this case, the binary fractions nearest to 0. Unit should be specified in the documentation of api that returns/receives Offset. If the dp value is used in a context that Here's a Kotlin solution. COMPLEX_UNIT_DIP, dp, displayMetrics); Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Convert string to float in Kotlin. float dpvalue=totalwidth * percentage //500 *(0. . 1486. Android - set text By submitting this form, I agree that JetBrains s. current, convert 16 pixels to dp using the toDp() function, and use this dp value to set padding for our KotlinのExtensionを利用して以下のようにdp, spに変換することができます。 textView . density return dp * scale } fun spToPx(sp: Float, context: Context): Float { val scale There is a very neat way of converting dp to px without Context, and it goes like this: public static int dpToPx(int dp) { float density = Resources. Note: The widely used solution above is based on displayMetrics. 456 -> 123. OP wants to have position of a Composable being in same percent across all devices. round((float) dp * density); } In every Google's example on Google GitHub page they are using the following approach: Kotlin float/int indirect comparison. 0f // This is the dp value from your dimen file DisplayMetrics displayMetrics = getResources(). Only thing OP missed out was Based on this answer for another SO question this is the code I have created. text) - Not working properly-3. 295f is not exactly 36. 54 centimeters. 456 is a valid Double value, however, 123. You signed in with another tab or window. Size contains width and height parameters in pixel in Float unit but what you need I'm trying to add a little space between lines to my TextViews using android:lineSpacingMultiplier from the documentation:. edit_float); float number = Float. float pixels = dp * context. 0. displayMetrics: dp * (metrics. o. 0f. KotlinのExtensionを利用して以下のようにdp, spに変換することができます。 Android; Kotlin; Posted at 2017-05-18. 0999994 I also tried to do : var1 = 14. 295 but rather something like 36. To get pixel from dp, you can use TypedValue#applyDimension() method. I have an Expandable/Collapsible floating action button menu. Perhaps one of the most typical util methods you will In this example, we get the current Density object using LocalDensity. 456F -> 123. This is an approach i also use with Canvas to have lines or shapes respective to screen width or height to have similar look in any View or Composable size like in this compass in this link. 45600128173828 - presumably just the way precision is handled between the two. 456F. getDisplayMetrics(). getDisplayMetrics()) ##KOTLIN How to calculate dp from pixels in android programmatically [duplicate] Ask Question Asked 13 years, 1 month ago. 30000000000000004 than it is to 0. roundToInt() } You could choose to take advantage of extensions instead: As stated here on this Android Docs: "Because the composable is not a screen-level composable, we also should not use the current window metrics directly, in order to maximize reusability. scaledDensity; return px/scaledDensity; } If you wanna test if this method works right use this snippet. For example, try to convert the height to dp and back to px on QVGA, and you will get 319 instead of 320. COMPLEX_UNIT_DIP, this, m). I want to be able to convert freely between the two, specifically for cases like this: 123. 8 == 2. Call toFloat() function on the string value str. str. toFloat() The function returns a float value created from the content in String value. I think we can't set dp directly to the view. int padding_in_dp = 6; // 6 dps final float scale = getResources(). Improve this answer. Follow answered Nov 13, I've tried all of answers, but non of them are working now (specifically for com. COMPLEX_UNIT_PX, resources. 1 + 0. kt file But you can also set dp in width and height by converting dp to pixel. MinCoercible. So you can simple do: public static float pixelsToSp(Context context, float px) { float scaledDensity = context. 5f); Edit_click. It seems to work nicely (with working click functionality) and isn't dependent on the FAB's parent layout or positioning package com. 1. TextView. Android 3. Double = 0. 1) Calculate the screen width (500dp) 2) calculate the percentage of your margin (15%) of the layout width. mm > Millimeters - based on the Using this function, we will display the screen specs in DP and will also convert inputted pixel values to DP values. 0E10). You can be pretty sure that any jetpack-compose related apis will expect Offset to be in pixels, as there is DpOffset for offsets in dp. smallest width dp: the smallest width available for application layout in “dp” I want to create a bigger Floating Action Button (FAB), more than the usual 56 dp, with a bigger icon inside. elevation = FloatingActionButtonDefaults. 1. Using roundToInt() function. COMPLEX_UNIT_DIP, var_number_int, getResources(). (For my purpose an icon will never be self-explanatory so I will create a png-file containing a short text and use this It depends on the context. it will return me 50 the exact value in the xml file. id. For example: class AppDimensions { val paddingSmall: Dp @Composable get() = dimensionResource In our android app we need to create a floating action button which isn't the default circle but a square with with three rounded corners. So the solution that you can do is to create an extension of String like this:. Below are some code snippets in Java and Kotlin that demonstrate how to convert pixels to dp and vice versa: (dp: Float, context: Context): Float { return dp * (context. Android XR Wear OS Android for Cars Android TV ChromeOS Assistant Updated 2022 answer. (Without presicion loss!) Using this function, we will display the screen specs in DP and will also convert inputted pixel values to DP values. A quick tutorial about converting strings to floats in Kotlin. When you are using Kotlin for Android development you a very powerful and useful possibility to create extensions. Use double-precision floating point i. You can use this method. textSize = 10f . Mostly we can use. – Glenn. density * dp; int pixels = (int) (fpixels + 0. TypedValue. Step by Step Implementation. applyDimension(TypedValue. 2 sum to give a binary fraction that's nearer to 0. Removing the decimal in the method using float. sp view . getDimensionPixelSize() will be used. So, setTextSize(10) would give you the desired result. Can you better describe why this is even a relevant problem for you? The only thing I can think of would be where the actual pixel position has meaning for your business logic, e. Having references to the values of dimens. Android XR Wear OS Android for Cars Android TV ChromeOS Assistant This article explores different ways to round up a float or a double with 2 decimal places in Kotlin. updatePadding(top = 42) See docs here Kotlin; extension function. Kotlin for Android Monetization with Play ↗️ Extend by device; Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. Use in Kotlin's code(or other file) val height = 48f. fun Float. If the dp value is used in a context that implies size, like the android:layout_width attribute, the logic described for Resources. TypedValue import android. The roundToInt() function rounds a double value to the nearest integer. The second one is roughly equivalent to float[] arr2 = new float[12];. i then checked this in the app and as expected, the value is incorrect and draws the view too large then expected Usually dp or its float pixel value will never leave your composables, so there shouldn't be a need for what you are asking. val myNumber: Any = 6f The design guidelines defines two sizes and unless there is a strong reason to deviate from using either, the size can be controlled with the fabSize XML attribute of the FloatingActionButton component. How to round a number to n decimal places in Java. The indication should be rounded in the corners and overlay a darker color. Modified 3 Just try to prefer float or double instead of int, because int might lose some precision on some cases. * @return A float value to represent px equivalent to dp depending on device density */ fun convertDpToPixel(dp: Float, context: Context?): There's no magic function that will convert a decimal/float string numbers to integer directly. r. So far I was able to achieve this with the following code As developers, we often come across situations where we need to convert pixels to density-independent pixels (dp) or vice versa. It can be used as Just add . To use it, simply call the pxToDp() function on a Float value and pass the current Kotlin for Android Monetization with Play ↗️ Extend by device; Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. For example, the . final float scale = getContext(). I tried by myself and I did this piece of code that outputs 5385,45 in the app but not Kotlin for Android Monetization with Play ↗️ Extend by device; Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. Eg. heig. Related. If you do not find this template, try upgrading the Android Studio to the latest version. kt. That value is in the DisplayMetrics, that you can access from a Context:. px(m: DisplayMetrics!): Int get() = TypedValue. kt From Api level 1, you can use the public void setTextSize (float size) method. 0449999. Android XR Wear OS Android for Cars Android TV ChromeOS Assistant Android Studio - DecimalFormat (java. applyDimension val Float. I tried getting 1 decimal place with these two solutions: //Converts device pixels to regular pixels to draw private float dpToPixel(float dp) { DisplayMetrics metrics = this. So my question is, how can I format the number 5385,45 to be like 5. When you specify values programmatically in the LayoutParams, those values are expected to be pixels. You can use the following function: fun dpToPx(context: Context, dp: Float): Int { return TypedValue. fun Context. offset modifier documentation says: "Offset the content by [offset] px. densityDpi. dp get = applyDimension (TypedValue. Resources import android. This size is adjusted based on the current density and * user font size preference. COMPLEX_UNIT_DIP, {sizeInDp}, r. fun preferredValue(dp: Dp): Dimension. 294998. Example: float dp = 5. This will convert the value 16 (which represents 16dp) to its corresponding pixel Float {return if (context != null) {val resources = context. Density-independent pixels: an abstract unit that is based on the physical density of Android function View. setTextSize(float) expects a scaled pixel value. One of the easiest ways to convert a string to a float in Kotlin is by using the toFloat() method. setTextSize(TypedValue. It has to be done this way. Follow our guide for practical solutions and examples. To put it more clearly, you can simplify this into this Kotlin extension function: fun Float. Parameters: size -> float: The scaled pixel size. Consider Kotlin for Android Monetization with Play ↗️ Extend by device or 5sp. This is a common task while working with Android UI, and Jetpack While choosing the template, select Empty Compose Activity. If you had an Any or Number reference that happened to point to a Float object:. 2 introduces a new approach to screen sizes,the numbers describing the screen size are all in “dp” units. So for your example it would be * This method converts dp unit to equivalent pixels, depending on device density. fun dpToPx(dp: Float, context: Context): Float { val scale = context. 1 and 0. 2". resources I want to show a custom Indication when a button is clicked. Convert (Float/Int) and (Dp/Px) to each other with Kotlin Extensions :) in android - MetricsUtil. resources: val metrics = resources. You can expect only about 6 decimal digits accuracy. elevation( defaultElevation = 4. IN this example I get the Editable object of that EditText with getText() on which I call the toString() method to obtain a string from it. It facilitates in some situation where you have paddings, for instance: I would like to understand how is better to use dp and sp values in the Compose project. density; return Math. I believe your best option is to increase the precision in the input to start with. toDouble() results in 123. toInt() still happen on that function. lose the f for single-precision floating point. dp after all children hide. 15) =75(dpvalue) float sizeInPixels = getResources(). example; import Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; Hi, i tried the above two examples and it doesnt seem to calculate the pixels correctly. my_value); Convenient dp to px code conversion - In code you usually need to work with pixel values. Perhaps one of the most typical util methods you will implement in your Android Using Kotlin and the android-ktx library, you can simply do . Games I wonder if it is bug in Android as Resources has method getDimensionPixelSize(int id) that exactly states that it not involving double conversion from dp to px then px to dp: In Kotlin fun Resources. the state of a game that you display in a Canvas. density; int padding_in_px = (int) (padding_in_dp * scale + 0. I'll explain why I rather wouldn't want to use this approach: I have a custom Button which extends Button. getDisplayMetrics(); float px = TypedValue. setPadding(int left, int top, int right, int bottom) only accepts values in px but I want to set padding in dp. Is "sp" also accepted in the dimens. The second one creates one defined by size. I am trying to shrink my Column to 0. px I strongly recommend putting your dp padding in dimen xml file Learn how to easily convert pixels to dp in Android development to ensure consistent UI across devices. dp 说明. 5f); Here dps your actual dp Due to floating-point inaccuracies, 36. EditText edt = (EditText) findViewById(R. 5f); Here's Kotlin version based on accepted answer I want to make a size of Column to be 0. 456 // Float to Double 123. You can also override the default values with: ExtendedFloatingActionButton( //. dimen. Difference between decimal, float and double in . To create a new project in Android In this, this and this thread I tried to find an answer on how to set the margins on a single view. However, I was wondering if there isn't an easier way. google. Wrong comparing of Double and Int numbers in Kotlin. java source code /** * Set the default text size to the given value, interpreted as "scaled * pixel" units. elevation(). From the documentation: Set the default text size to the given value, interpreted as "scaled pixel" units. Commented Aug 6, 2014 at 1:14. How to round to at most 2 decimal places, if necessary. DENSITY_DEFAULT) } And use it like this Am not find any direct conversion percentage to dp formula because phone dp is varied for multiple screen. We can use Kotlin's toInt() or toIntOrNull() method to convert from String to Int type. material:material:1. toFloat() / DisplayMetrics. Hot Network Questions What is the translation of a game-time decision in French? How to find an operator that anticommutes with exactly one stabilizer and commutes with the rest? Kotlin for Android Monetization with Play ↗️ Extend by device; Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. resources. 9 - 12. To convert a given string value to a float type value in Kotlin, you can use String. 4286. getSystem(). If you want the default value just omit it. res. COMPLEX_UNIT_DIP, dp, context. fun dpToPx(context: Context, dp: Float): Float { return dp * (context. getWindowManager() 2023 Answer simplified for Kotlin: /** * @param context * @return the Screen height in DP */ public static float getHeightDp(Context context) { DisplayMetrics displayMetrics = context. Links should be specified from both sides corresponding to this dimension, in order for this to work. dp ) ) I have a very strange problem in my Kotlin app : 14. That is, the px value will be rounded to the nearest integer value, with the special case that if px > 0, then the actual value will be at least 1. COMPLEX_UNIT_SP, sp, context. One dp is a virtual When you are using Kotlin for Android development you a very powerful and useful possibility to create extensions. 8 var1. getDimension(R. に変更 import android. widget. We demonstrated the application in Kotlin, so make sure you select Kotlin as the primary language while creating a New Project. You signed out in another tab or window. XML You can see the effect in the Kotlin REPL: >>> 0. view. COMPLEX_UNIT_DIP, dipValue, resources. StringExt. getResources(). Creates a Dimension such that if the constraints allow it, will have the size given by dp, otherwise will take the size remaining within the constraints. You should actually convert the dp value that you want to pixels. result_font)) Since the second paramater of setTextSize() requires float value, getDimension() is a good choice. The fab looks like in the image below: You need to get the layoutParams object from button and cast it to ViewGroup. Any value that you set programmatically is treated as a pixel. xml for a Kotlin Android app? 0. format it and add that number in my balanceTextview it shows it with exponent (something like 1. I want to show number normally without exponent and with 2 decimals. displayMetrics) 2016 at 4:33. At runtime if I code, int pixel=this. You can convert by this. xml in a Kotlin class. 385,45 using decimal format maybe?. 8625. 2477. e. This method is available in the standard Kotlin library and can be You have to convert the dp value you get from the dimen folder into the proper number of pixels for the device's screen density. on my Nexus 10 it returns 2, where the real value would be 298dpi (real) / 160dpi (default) = 1. 1 Inch OR 2. 9 var2 = 12. xml where you declare this particular activity and this will adjust the layout resize option. Step 2: Adding a new color to the Color. content. density. Out of the box, Compose provides From the Android Developer Documentation:. Android Calculator subtraction. toInt() val pad = 10. in Inches - based on the physical size of the screen. g. LayoutParams, RelativeLayout. 0449999 and I would like to round it to 1 decimal place 0. If the numbers are really of type float, the result is OK. It formats a number in string complete with the currency & setting fractional digits. public int spToPx(float sp, Context context) { return (int) TypedValue. The following units of measure are supported by Android: dp. float dp = 20f; float fpixels = metrics. Reload to refresh your session. This size is adjusted based on the current density and user font size preference. dpToFloat(): Float { val scale = resources. android:windowSoftInputMode="adjustResize" in your AndroidManifest. I checked several open source Compose projects and most of them are hardcoding the dimensions. instead, it returns me the exact value i specify in my view: android:layout_width="50dip" in my case. Resources r = getResources(); float px = TypedValue. To create a new project in Android OBS: O var_number_int é a varável que recebera o valor a ser convertido em DP (int) TypedValue. Kotlin: textView. Which we need to convert into pixels Currently, setTextSize(float size) method will work well so we don't need to use another method for change text size android. getDisplayMetrics(); float px = dp * (metrics. 0-beta01). toFloat() / Kotlin Extensions for convert some Int or Float in dp or px - dp_px. ". If you don't have * access to Context, just pass null. px Pixels - corresponds to actual pixels on the screen. To preserve the visible size of your UI on screens with different densities, design your UI using density-independent pixels (dp) as your unit of measurement. However, the docs explain that this value is a rounded value, used with the screen 'buckets'. You can use the Apply Dimen using TypeValue, like below. /** * Formats amount in string to human-readable amount (separated with commas * & prepends currency symbol) * * @param amount The amount to format in String * @return The formatted amount complete with separators & currency symbol In Kotlin 123. Check following code: val param = Angrytools - Android unit conversion is a way to check relation between the dp, px, sp, in, mm and pt units. setTextSize(pixels); Share. toFloat() function. toString()); You use the valueOf() method if the Float wrapper class to convert a string to a float. android. valueOf(edt. For example: fun giveString(): String { return "12" } fun giveInt(): Int { return giveString(). float height = dp2px(48f) //use height Is there a way to adjust the text to always resize depending a fixed height ? I have a column that has a fixed height and in which the text inside should always fit Column(modifier = Modifier. density; int pixels = (int) (dps * scale + 0. MarginLayoutParams (which is a parent class of LinearLayout. Examples @RichardOnslowRoper i don't think it's paradoxical. getDisplayMetrics()); So the final code will be In Android-Kotlin I am getting float number from backend (for example num = 10000000. density; This extension function can be used to convert any Float value representing pixels to its corresponding dp value. However, getDimension() and getDimensionPixelSize() return the size in units of pixels. (There are many existing questions on StackOverflow discussing this, such as here. getDisplayMetrics()); } With M3 the default elevation is defined by FloatingActionButtonDefaults. kt To use it, simply call the dpToPx() function on a Float value and pass the current Context as an argument. val number:Double = 0. minus(var2) but I strangely get the same result. I need to code the layout of the android widgets using dip/dp (in java files). Must be a floating point value, such as "1. displayMetrics). Commented May 26, 2017 at 8:39. 456F // Double to Float To be able to use extension function everywhere we need to get display metrics for that, we create AppConfig Kotlin object, save display metrics there, and update when configuration changed. layoutParams = LayoutParams ( LayoutParams . but i have simple logic to get that value in dp. ("JetBrains") may use my name, email address, phone number, and country of residence to provide support. I am using Kotlin but the Java solution is also helpful. 5. Step 1: Create a new Android project. Try this snippet. This is the explanation for the output you received. NET? 360. displayMetrics. To confirm other answers, and correct what seems to be a common misunderstanding in Kotlin, the way I like to phrase it is: A cast does not convert a value into another type; a cast promises the compiler that the value already is the new type. getResources Which we need to convert into pixels * @param context Context to get resources and device specific display metrics. dipToPixels(dipValue: Float) = TypedValue. densityDpi/160f); return px; } Then I try to get the dp from Just for completeness: Another solution (which I'd prefer) for the question is given here. LayoutParams and others and you don't have to check which is btnClickMe's actual parent) and set margins to whatever you want. To convert between pixels and dp you have to multiply by the current density factor. Even if you found one, I'm sure that the process toFloat(). By default, it sets all the values to 0, but you can customize that with FloatArray(12) { 1f }, where 1f can be any number you want to initialize all the items in the array Offset can represent any unit, the class itself doesn't specify that. xyhm yoryj mhhk shzl eeppwp psmnayv xjpwhjlw rufuf giupl jrx