How to make TextView's text size based on device screen size in android

Question

i have one app which can be runs on different screen size from 3.7 Inches to 6.0 inches(no plan for tablet now).

now i have TextView which have 17dp for title and 14dp description. but when i run the app in small device (3.7-4.7 inches screen size device) the textview's text is big.

But the same textview in higher 5.5 or 5.7 this can be small .

so how can i make TextView looks same for all device.

Answer 1

As screen size is between 3.7 and 6.0 you should only create 1 additional dimens files like sw480 and use dp-s for TextView dimensions and sp for text size. In default dimens file you should write sizes for devices with smallest screen sizes e.g. for 3.7‘, and comparably bigger dimens in sw480 file e.g for 5.5‘ screens. Based on particular cases additional dimens files can be created like sw360. If screen is less than 360 dp width，it will use the values from default dimens file, if 360dp <= screen size < 480dp then sw360 will be used. The same simple logic works for each created sw dimens file.

Answer 2

In android you are dealing with dp/sp values. Don't think of physical size. There's this nifty plugin that lets you convert your sp/dp values to different buckets. You can add https://plugins.jetbrains.com/plugin/9349-dimenify

Answer 3

Create multiple dimens.xml for your project, it will give size according to the display size

You Have to create multiple values folder and have to create dimens.xml inside them. A reference for those folders are:

values-sw720dp          10.1” tablet 1280x800 mdpi

values-sw600dp          7.0”  tablet 1024x600 mdpi

values-sw480dp          5.4”  480x854 mdpi 
values-sw480dp          5.1”  480x800 mdpi 

values-xxhdpi           5.5"  1080x1920 xxhdpi
values-xxxhdpi           5.5" 1440x2560 xxxhdpi

values-xhdpi            4.7”   1280x720 xhdpi 
values-xhdpi            4.65”  720x1280 xhdpi 

values-hdpi             4.0” 480x800 hdpi
values-hdpi             3.7” 480x854 hdpi

values-mdpi             3.2” 320x480 mdpi

values-ldpi             3.4” 240x432 ldpi
values-ldpi             3.3” 240x400 ldpi
values-ldpi             2.7” 240x320 ldpi

Answer 4

I had the same issue and I used this library and it did the thing for me.

The thing is you just have to replace sp with ssp in your xml after adding this library in your gradle and you'll be good to go.