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 <[email protected] > <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 [email protected] >> <javascript:> >> To unsubscribe from this group, send email to >> [email protected] <javascript:> >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en >> > > > > -- > Dianne Hackborn > Android framework engineer > [email protected] <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 [email protected]. To post to this group, send email to [email protected]. 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.
