little Up beacause not fixed Le jeudi 28 juin 2012 16:12:35 UTC+2, jean-francois garreau a écrit : > > The problem is : as I'm creating my custom view heriting from View, I > don't have any findById so the pattent viewHolder won't be useFull for me :( > > And I'm already implemnting it with the view recycling view system. > Indeed, in my View I use some Paint elements that I keep in the instance of > my view. > > Le jeudi 28 juin 2012 15:58:53 UTC+2, MagouyaWare a écrit : >> >> Nope... http://lmgtfy.com/?q=android+viewholder+pattern >> >> Thanks, >> Justin Anderson >> MagouyaWare Developer >> http://sites.google.com/site/magouyaware >> >> >> On Thu, Jun 28, 2012 at 7:50 AM, jean-francois garreau < >> jean.francois.garr...@gmail.com> wrote: >> >>> You mean : >>> >>> >>> public View getChildView(int groupPosition, int childPosition, boolean >>> isLastChild, View convertView, ViewGroup parent) { >>> >>> >>> >>> >>> ObjectSubViewNew subView = null; >>> >>> >>> if (convertView == null) { >>> >>> subView = new ObjectSubViewNew(mainContext, kmUnit); >>> >>> } else { >>> >>> subView = (ObjectSubViewNew) convertView; >>> >>> } >>> >>> .... >>> } >>> >>> >>> ? >>> >>> >>> Le jeudi 28 juin 2012 14:27:14 UTC+2, jean-francois garreau a écrit : >>> >>>> Hi everyone, >>>> >>>> I have a problem for optimzing my application. More particulary, an >>>> ExpandListView. I found the scroll animation pretty slow compare to what I >>>> can see on other application. I have done severals optimizations yet but >>>> now I'm faced to a lack of idea for have a fluent scroll... >>>> >>>> What have done : >>>> >>>> 1. First i start to create CustomView inherting from View >>>> 2. I saw that in log I have lots of GC >>>> 3. I have use allocationTracket in DDMS in order to see what are >>>> the object created who could cause my GC >>>> 4. I identify lots of instanciations of String so I've modify my >>>> model in order to carry all the string i need in order to avoid new >>>> creations of String >>>> 5. I also try to write a reusable object corresponding to a >>>> drawable instruction in order to skim throught all instruction during >>>> the >>>> draw method >>>> >>>> >>>> In order to gives you all information for helping me with my code, here >>>> is a litle piece of functionnal. >>>> >>>> My app is an application which gives you the movies showtimes near your >>>> position. The expand list show thoses informations : >>>> >>>> *Name Cinema : [Image]* >>>> distance >>>> ------------------------------**------------------------------** >>>> ------------------------------ >>>> *Movie Name 1 :* time >>>> passed time 1 | passed time 2 | *nearest time* | >>>> futur time 1 | futur time 2 >>>> ------------------------------** >>>> ------------------------------**------------- >>>> *Movie Name 2 :* time >>>> passed time 1 | passed time 2 | *nearest time* | >>>> futur time 1 | futur time 2 >>>> ------------------------------** >>>> ------------------------------**------------- >>>> >>>> >>>> etc. >>>> >>>> As you can see, on each movie I list all showtimes for the cinema and I >>>> have a diferent display according to the current time >>>> >>>> In term of Model Object, I have this structure in my adapter : >>>> >>>> ArrayList<TheaterBean> theaterList; // The list of my cinema >>>> HashMap<String, Movie> mapMovie; // An hashmap which gives me the movie >>>> corresponding to an id >>>> >>>> >>>> The problem I'm facing now is that when i look at the log, I still have >>>> lots of GC... and when i looked to the allocationTracker i see that : >>>> >>>> In first position comes android.graphic.Bitmap from method nativeCreate >>>> and it's corresponding stack is : >>>> >>>>> android.graphics.Bitmap nativeCreate Bitmap.java -2 true >>>>> android.graphics.Bitmap createBitmap Bitmap.java 477 false >>>>> android.view.View buildDrawingCache View.java 6599 false >>>>> android.view.View getDrawingCache View.java 6450 false >>>>> android.view.ViewGroup drawChild ViewGroup.java 1571 false >>>>> android.view.ViewGroup dispatchDraw ViewGroup.java 1373 false >>>>> android.widget.AbsListView dispatchDraw AbsListView.java 1545 false >>>>> android.widget.ListView dispatchDraw ListView.java 3138 false >>>>> android.widget.**ExpandableListView dispatchDraw >>>>> ExpandableListView.java 229 false >>>>> android.view.View draw View.java 7008 false >>>>> android.widget.AbsListView draw AbsListView.java 2669 false >>>>> android.view.ViewGroup drawChild ViewGroup.java 1646 false >>>>> android.view.ViewGroup dispatchDraw ViewGroup.java 1373 false >>>>> android.view.ViewGroup drawChild ViewGroup.java 1644 false >>>>> android.view.ViewGroup dispatchDraw ViewGroup.java 1373 false >>>>> android.view.ViewGroup drawChild ViewGroup.java 1644 false >>>> >>>> >>>> In second position comes lots of android.widget.**ExpandableListPosition >>>> comming from getRecycleCreate the stack is : >>>> >>>>> android.widget.**ExpandableListPosition getRecycledOrCreate >>>>> ExpandableListPosition.java 121 false >>>>> android.widget.**ExpandableListPosition obtain >>>>> ExpandableListPosition.java 107 false >>>>> android.widget.**ExpandableListConnector$**PositionMetadata obtain >>>>> ExpandableListConnector.java 988 false >>>>> android.widget.**ExpandableListConnector getUnflattenedPos >>>>> ExpandableListConnector.java 176 false >>>>> android.widget.**ExpandableListConnector getItemViewType >>>>> ExpandableListConnector.java 464 false >>>>> android.widget.AbsListView$**RecycleBin getScrapView AbsListView.java >>>>> 4603 false >>>>> android.widget.AbsListView obtainView AbsListView.java 1465 false >>>>> android.widget.ListView makeAndAddView ListView.java 1745 false >>>>> android.widget.ListView fillDown ListView.java 670 false >>>>> android.widget.ListView fillGap ListView.java 641 false >>>>> android.widget.AbsListView trackMotionScroll AbsListView.java 3497 >>>>> false >>>>> android.widget.AbsListView$**FlingRunnable run AbsListView.java 2994 >>>>> false >>>>> android.os.Handler handleCallback Handler.java 587 false >>>>> android.os.Handler dispatchMessage Handler.java 92 false >>>>> android.os.Looper loop Looper.java 130 false >>>>> android.app.ActivityThread main ActivityThread.java 3835 false >>>> >>>> >>>> After I have lots of java.lang.ref.SoftReference comming from >>>> buildDrawingCache, the stack is : >>>> >>>>> android.view.View buildDrawingCache View.java 6602 false >>>>> android.view.View getDrawingCache View.java 6450 false >>>>> android.view.ViewGroup drawChild ViewGroup.java 1571 false >>>>> android.view.ViewGroup dispatchDraw ViewGroup.java 1373 false >>>>> android.widget.AbsListView dispatchDraw AbsListView.java 1545 false >>>>> android.widget.ListView dispatchDraw ListView.java 3138 false >>>>> android.widget.**ExpandableListView dispatchDraw >>>>> ExpandableListView.java 229 false >>>>> android.view.View draw View.java 7008 false >>>>> android.widget.AbsListView draw AbsListView.java 2669 false >>>>> android.view.ViewGroup drawChild ViewGroup.java 1646 false >>>>> android.view.ViewGroup dispatchDraw ViewGroup.java 1373 false >>>>> android.view.ViewGroup drawChild ViewGroup.java 1644 false >>>>> android.view.ViewGroup dispatchDraw ViewGroup.java 1373 false >>>>> android.view.ViewGroup drawChild ViewGroup.java 1644 false >>>>> android.view.ViewGroup dispatchDraw ViewGroup.java 1373 false >>>>> android.view.ViewGroup drawChild ViewGroup.java 1644 false >>>> >>>> >>>> To resume for 512 allocations : >>>> >>>> - 67 are coming from : android.graphics.Bitmap >>>> - 300 are coming from : android.widget.**ExpandableListPosition >>>> - 81 are coming from : java.lang.ref.SoftReference >>>> AND java.lang.ref.**WeakReference >>>> >>>> So I have no idea on how to solve my problem... If you have a new >>>> device you would probably don't see the lag effect I mention. For my tests >>>> I'm using a SGS. But with the emulator we can observe the GCs >>>> >>>> All the code is available here : >>>> >>>> https://github.com/binomed/**CineShowTime-Android/blob/** >>>> master/Libraries/CineShowTime/**src/com/binomed/showtime/** >>>> android/layout/view/**ObjectSubViewNew.java<https://github.com/binomed/CineShowTime-Android/blob/master/Libraries/CineShowTime/src/com/binomed/showtime/android/layout/view/ObjectSubViewNew.java> >>>> >>>> for the child view >>>> https://github.com/binomed/**CineShowTime-Android/blob/** >>>> master/Libraries/CineShowTime/**src/com/binomed/showtime/** >>>> android/layout/view/**ObjectMasterView.java<https://github.com/binomed/CineShowTime-Android/blob/master/Libraries/CineShowTime/src/com/binomed/showtime/android/layout/view/ObjectMasterView.java> >>>> >>>> for the group view >>>> https://github.com/binomed/**CineShowTime-Android/blob/** >>>> master/Libraries/CineShowTime/**src/com/binomed/showtime/** >>>> android/adapter/view/**AbstractResultAdapter.java<https://github.com/binomed/CineShowTime-Android/blob/master/Libraries/CineShowTime/src/com/binomed/showtime/android/adapter/view/AbstractResultAdapter.java> >>>> >>>> for the adpater (It's an utlity class but we find the sames methods as in >>>> ExpandableAdapter) >>>> >>>> the curent version on market only have the optimization of CustomView. >>>> : https://play.google.com/**store/apps/details?id=com.** >>>> binomed.showtime&feature=**search_result#?t=** >>>> W251bGwsMSwyLDEsImNvbS5iaW5vbW**VkLnNob3d0aW1lIl0.<https://play.google.com/store/apps/details?id=com.binomed.showtime&feature=search_result#?t=W251bGwsMSwyLDEsImNvbS5iaW5vbWVkLnNob3d0aW1lIl0.> >>>> >>>> >>>> I'm open to all new idea for making my application faster :) >>>> >>>> Maybe by not invoking the requestLayout each time I set a movie but >>>> each time a scroll is ended ? >>>> >>>> If you have any question don't hesitate. >>>> >>>> regards >>>> >>>> >>>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Android Developers" group. >>> To post to this group, send email to android-developers@googlegroups.com >>> To unsubscribe from this group, send email to >>> android-developers+unsubscr...@googlegroups.com >>> For more options, visit this group at >>> http://groups.google.com/group/android-developers?hl=en >>> >> >>
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