So where exactly would a device manufacturer have to set the values for xdpi and ydpi?
On Tuesday, October 25, 2011 at 10:27:04 PM UTC+2, Dianne Hackborn wrote: > > Sorry you just can't use them. Nothing in the platform makes use of them. > They need to be set by the manufacturer (there is no way for the platform > to know what they are), and as of today they are just not consistently set > correctly across devices, and because nothing in the platform relies on > them it is easy for devices to have them set incorrectly. > > This information is just not available, sorry to say. > > Why do you need the actual physical dpi? > > On Tue, Oct 25, 2011 at 12:44 PM, ashughes <ashu...@gmail.com > <javascript:>> wrote: > >> The values reported by xdpi and ydpi are still incorrect on some devices. >> >> Samsung Galaxy Tab 10.1 (from Google I/O): >> xdpi: 160.15764 >> ydpi: 160.0 >> >> Lenovo ThinkPad Tablet: >> xdpi: 160.15764 >> ydpi: 160.0 >> >> HTC Jetstream: >> xdpi: 150.51852 >> ydpi: 149.41176 >> >> The Galaxy Tab and ThinkPad Tablet report incorrect values, while the >> Jetstream reports correct values. I don't know why the xdpi and ydpi values >> are different (unless they *actually* are on they physical display, in >> which case that makes sense since both values for the Jetstream are close >> to the correct overall value). >> >> Is the value reported by xdpi and ydpi set somewhere by the device >> manufacturer? Is that why the values are correct on some devices and not on >> others? Is there going to be any guarantee in the future that these values >> will always be reported as correct (it would be great if this were a >> requirement for passing the CTS)? >> >> It would be really helpful to be able to reliably query for the actual >> dpi of a device without having to rely on a database of known device values. >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Android Developers" group. >> To post to this group, send email to android-d...@googlegroups.com >> <javascript:> >> To unsubscribe from this group, send email to >> android-developers+unsubscr...@googlegroups.com <javascript:> >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en >> > > > > -- > Dianne Hackborn > Android framework engineer > hac...@android.com <javascript:> > > Note: please don't send private questions to me, as I don't have time to > provide private support, and so won't reply to such e-mails. All such > questions should be posted on public forums, where I and others can see and > answer them. > > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. To post to this group, send email to android-developers@googlegroups.com. Visit this group at https://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/3fe44251-2b88-47bc-b18c-bdb302868d2e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
