Question

I’m having problems with an app on the Samsung S I9000. The buttons on my app are much larger than they should be. In addition, the system is selecting res/values-small/ as a source of values. All in all, it’s acting as if the device has a very tiny screen, even though it’s supposedly 800×480 (I’m working in landscape mode). In fact, I can improve the situation by changing the values in res/values-small/styles.xml to even smaller font sizes than I was already using.

Display metrics are as follows:

 density = 2.0
 scaledDensity = 2.0
 densityDpi = 320
 widthPixels = 800
 heightPixels = 480
 xdpi = 320.0
 ydpi = 320.0

Can anybody explain why the device is scaling my graphics up so much and acting as if I have an extremely small display? More importantly, how do I fix it?

I’ve tried tweaking my manifest to set minSdk and targetSdk to a recent release, but that had no effect. Deleting values-small/ caused the app to use the default values/ instead, which only made the situation worse.

Answer 1

Always use “sp” for font and rest as “dp”

place your image in corresponding folder as below

suppose your are using 36×36 image in for mdpi you need to use

drawable-mdpi - 36 x 36
drawable-hdpi - 48 x 48
drawable-xhdpi  72 x 72

3:4:6:8 ratio

There are some situations in which you might not want Android to pre-scale a resource. The easiest way to avoid pre-scaling is to put the resource in a resource directory with the nodpi configuration qualifier.

For example:

res/drawable-nodpi/icon.png

for example

you are using an font size as 14sp means it will automatically change for 320 DPI as

14×320÷160 =28

so now your font size is 28dp for xhdpi resolution phone.