density-independent-pixel

What is the correct way to specify dimensions in DIP from Java code?

April 26, 2023 by Tarik

There is an existing utility method built called TypedValue.applyDimensions(int, float, DisplayMetrics) that does this. Here’s how to use it: // returns the number of pixels for 123.4dip int value = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, (float) 123.4, getResources().getDisplayMetrics()); There’s a list of other types that you can use with it including COMPLEX_UNIT_SP, COMPLEX_UNIT_PT all found in the page … Read more

Convert dip to px in Android

April 21, 2023 by Tarik

Try this: Java public static float dipToPixels(Context context, float dipValue) { DisplayMetrics metrics = context.getResources().getDisplayMetrics(); return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dipValue, metrics); } Kotlin fun Context.dipToPixels(dipValue: Float) = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dipValue, resources.displayMetrics)

How to convert DP, PX, SP among each other, especially DP and SP?

January 15, 2023 by Tarik

DP to PX: public static int dpToPx(float dp, Context context) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, context.getResources().getDisplayMetrics()); } SP to PX: public static int spToPx(float sp, Context context) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, sp, context.getResources().getDisplayMetrics()); } DP to SP: public static int dpToSp(float dp, Context context) { return (int) (dpToPx(dp, context) / context.getResources().getDisplayMetrics().scaledDensity); }

Does setWidth(int pixels) use dip or px?

January 6, 2023 by Tarik

It uses pixels, but I’m sure you’re wondering how to use dips instead. The answer is in TypedValue.applyDimension(). Here’s an example of how to convert dips to px in code: // Converts 14 dip into its equivalent px Resources r = getResources(); int px = Math.round(TypedValue.applyDimension( TypedValue.COMPLEX_UNIT_DIP, 14,r.getDisplayMetrics()));

Formula px to dp, dp to px android

November 15, 2022 by Tarik

Note: The widely used solution above is based on displayMetrics.density. However, the docs explain that this value is a rounded value, used with the screen ‘buckets’. Eg. on my Nexus 10 it returns 2, where the real value would be 298dpi (real) / 160dpi (default) = 1.8625. Depending on your requirements, you might need the … Read more

How to determine the screen width in terms of dp or dip at runtime in Android?

October 12, 2022 by Tarik

As @Tomáš Hubálek mentioned; Try something like: DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics(); float dpHeight = displayMetrics.heightPixels / displayMetrics.density; float dpWidth = displayMetrics.widthPixels / displayMetrics.density; OR Try old answer: Display display = getWindowManager().getDefaultDisplay(); DisplayMetrics outMetrics = new DisplayMetrics (); display.getMetrics(outMetrics); float density = getResources().getDisplayMetrics().density; float dpHeight = outMetrics.heightPixels / density; float dpWidth = outMetrics.widthPixels / density;