android - Screen density confusion -


let me start of telling research have done.

on developer.android.com states following should done support different screen sizes:

  • res/layout/my_layout.xml // layout normal screen size ("default")

  • res/layout-large/my_layout.xml // layout large screen size

  • res/layout-xlarge/my_layout.xml // layout extra-large screen size

  • res/layout-xlarge-land/my_layout.xml // layout extra-large in landscape orientation

it states drawables should scaled this:

to create alternative bitmap drawables different densities, should follow 3:4:6:8:12:16 scaling ratio between 6 generalized densities. example, if have bitmap drawable that's 48x48 pixels medium-density screens, different sizes should be:

  • 36x36 (0.75x) low-density
  • 48x48 (1.0x baseline) medium-density
  • 72x72 (1.5x) high-density
  • 96x96 (2.0x) extra-high-density
  • 144x144 (3.0x) extra-extra-high-density
  • 192x192 (4.0x) extra-extra-extra-high-density

now here question, lets hypothetically i'm designing nexus 10, in landscape mode. device fall under res/layout-large-land/ , screen density under (2.0x) extra-high-density - xhdpi.

but don't understand nexus 10 has tablet size screen falls under xhdpi, meaning image fetched drawable resource folder displayed smaller on device. have tested on nexus 10 , on phone , image lot smaller on nexus 10, expecting be.

i have been confused time , have done lot of research. can please me clarify ones , all. thank you.

the nexus 10 sure has tablet size screen (10.1 in), falls under xhdpi(extra high density) class because of pixel per inch(ppi) 299. can identify class device fall checking it's dpi. below density different classes.

  • ldpi - 120 dpi
  • mdpi - 160 dpi
  • hdpi - 240 dpi
  • xhdpi - 320 dpi
  • xxhdpi - 480 dpi

in context, ppi of samsung galaxy tab 10 inch tablet has tablet size screen 149. hence, falls under mdpi class. refer this site, helps understand device has dpi , density class. this website recommended learn more different device screen sizes.

just added information, nexus 10 tablet xhdpi device, uses xxhdpi class it's launcher icons(arguably important part of app).


Comments

Post a Comment

Popular posts from this blog

Is there a better way to structure post methods in Class Based Views -

i'm using class based views in django , never specify url in ajax calls , omit action parameter in form because know these requests go through post method of class based view. notice view - profile page make many requests depending on user updating on page - post method become convoluted , if/else mess example: def post(self, request, *args, **kwargs): # handle user changing available date if request.post.get('availabledate') != none: self.updateavailabledate(request) return jsonresponse({'result':'success'}) if request.post.get('newprojectname') != none: creative_user = creativeuserprofile.objects.get(id = request.user.id) project = project.create_project(creative_user, request.post['newprojectname']) project.save() return jsonresponse({'projectid': project.id }) if request.post.get('projectimage') != none , request.files['file']: proj...
Read more

performance - Why is XCHG reg, reg a 3 micro-op instruction on modern Intel architectures? -

i'm doing micro-optimization on performance critical part of code , came across sequence of instructions (in at&t syntax): add %rax, %rbx mov %rdx, %rax mov %rbx, %rdx i thought had use case xchg allow me shave instruction , write: add %rbx, %rax xchg %rax, %rdx however, dimay found agner fog's instruction tables , xchg 3 micro-op instruction 2 cycle latency on sandy bridge, ivy bridge, broadwell, haswell , skylake. 3 whole micro-ops , 2 cycles of latency! 3 micro-ops throws off 4-1-1-1 cadence , 2 cycle latency makes worse original in best case since last 2 instructions in original might execute in parallel. now... cpu might breaking instruction micro-ops equivalent to: mov %rax, %tmp mov %rdx, %rax mov %tmp, %rdx where tmp anonymous internal register , suppose last 2 micro-ops run in parallel latency 2 cycles. given register renaming occurs on these micro-architectures, though, doesn't make sense me done way. why wouldn't register renamer ...
Read more

c# - Asp.net web api : redirect unauthorized requst to forbidden page -

im trying redirect unauthorized request forbidden page instead i'm getting forbidden page in response body , how can fix ? here's startup class : app.createperowincontext(storecontext.create); app.createperowincontext<applicationusermanager>(applicationusermanager.create); app.createperowincontext<applicationsigninmanager>(applicationsigninmanager.create); app.usecookieauthentication(new cookieauthenticationoptions { authenticationtype = defaultauthenticationtypes.applicationcookie, expiretimespan = timespan.fromdays(30), }); app.useexternalsignincookie(defaultauthenticationtypes.externalcookie); app.usetwofactorsignincookie(defaultauthenticationtypes.twofactorcookie, timespan.fromminutes(5)); app.usetwofactorrememberbrowsercookie(defaultauthenticationtypes.twofactorrememberbrowsercookie); the method im trying reach : [httpget] [authorize(roles = "admin")] public string getcurrentusername() { return userman...
Read more