Hi Dianee, isHardwareAccelerated
This always returns false, as per code Canvas.java How it make decision to return false or true depending on hardware ? Thanks, ---------------------------------------------------------------------------------------------------------------------------------- Atul Raut http://rautatul.weebly.com/ http://atulraut.wordpress.com/ <http://rautatul.wordpress.com/> [email protected] <[email protected]> <[email protected]> On Wed, Apr 6, 2011 at 12:34 PM, Dianne Hackborn <[email protected]>wrote: > Hm, the background bitmap is shown basically based on whether > View.isHardwareAccelerated() returns true. The only time they can be > different is when the view hierarchy is running in a process which has > turned off hardware acceleration, which basically only happens as a special > case in the system process so not something your application code will ever > see. > > BouncingBalls is not a good example, because that one actually turns off > hardware acceleration (look at the activity declaration in the manifest). > > Oh and you need to make sure you don't call this until *after* a view is > attached to its window. That is, after View.onAttachedToWindow(). Prior > to that it doesn't have a surface any context for what it will be running > in, so it can't return anything useful. In other words if you are just > calling this from Activity.onCreate(), that is too soon to actually get a > good value. > > On Tue, Apr 5, 2011 at 1:31 AM, Shai <[email protected]> wrote: > >> Same results with ApiDemos! >> >> I created a new sample project (ApiDemos) using ADT with API level 11 >> as the target and I tried the following: >> I DO get the patterned blue background in the main screen (seems like >> hardware acceleration is working). >> >> In ApiDemos.Java: >> - In the "OnCreate" I added a log print for >> "getListView().isHardwareAccelerated()" and was "False" >> >> - In BouncingBalls.Java near the end of the onCreate I added a log >> print : >> >> MyAnimationView v =new MyAnimationView(this); >> container.addView(v); >> Log.e("Test", "Result:" + v.isHardwareAccelerated()); >> >> It was also false >> >> - In BouncingBalls.Java at MyAnimationView.onDraw(Canvas canvas) >> Log.e("Test", "Canvas is:" + canvas.isHardwareAccelerated()); >> >> It was also false >> >> >> Can someone clear this out for me ? >> Is hardware acceleration off ? >> Is this a bug in the isHardwareAccelerated() function or am I doing >> something wrong ? >> >> Best Regards, >> Shai Levy >> >> On Apr 4, 9:58 pm, Dianne Hackborn <[email protected]> wrote: >> > API demos is hardware accelerated. Try putting the call in one of the >> > simple samples there and see what it does. >> > >> > Fwiw, if you are using the default dark theme, if your window is >> hardware >> > accelerated than you will get the patterned blue background. If it is >> > drawing in software you will get the solid black background. >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > On Mon, Apr 4, 2011 at 10:53 AM, Shai <[email protected]> wrote: >> > > Hi, >> > >> > > I am trying to turn on hardware acceleration for my HoneyComb >> application >> > > but I never seem to get a 'true' result from this function. >> > >> > > I tried all the methods in the Android Developers blog post about the >> > > subject ( >> > >http://android-developers.blogspot.com/2011/03/android-30-hardware-ac. >> .. >> > > ). >> > >> > > I am working on a completely blank project (ADT generated project), I >> added >> > > the tag android:hardwareAccelerated="true" to both the application >> and >> > > activity and even called >> > > getWindow().setFlags( >> > > WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED, >> > > WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED); >> > >> > > before calling setContentView() >> > >> > > My view only has the TextView that was automatically generated from >> the ADT >> > > new project wizard. >> > >> > > Yet, no matter what I do, when I call isHardwareAccelerated() on the >> > > textview or the root view or any canvas I try to obtain - the function >> > > isHardwareAccelerated() of the view/canvas always returns false. >> > >> > > I am testing on a Motorola Xoom device with Android 3.0.1 >> > >> > > What am I missing here ? >> > >> > > Best Regards, >> > > Shai >> > >> > > -- >> > > 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] >> > > To unsubscribe from this group, send email to >> > > [email protected] >> > > For more options, visit this group at >> > >http://groups.google.com/group/android-developers?hl=en >> > >> > -- >> > Dianne Hackborn >> > Android framework engineer >> > [email protected] >> > >> > 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 post to this group, send email to [email protected] >> To unsubscribe from this group, send email to >> [email protected] >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en >> > > > > -- > Dianne Hackborn > Android framework engineer > [email protected] > > 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 post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en -- 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] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
