Hi, can you tell please what are you trying to achieve, e.g. what view are you building? Why do you set explicit height for the ListView anyway?
Cheers Dmitriy 2015-09-06 14:00 GMT+06:00 coding <cod...@userspace.se>: > Hi, > > I am developing a sailfish app using a QML ListView which is connected to > a model using a sqlite db. The model is based on QSqlTableModel, but > extended so it can be used by the QML ListView. I have found a segmentation > fault related to the ListView when trying to delete an element in the > ListView using the ContextMenu. I considered reporting this as a bug to > qt.io, but I decided to post it here first. > > I have tried to reproduce the problem with a short code snippet, but since > the bug needs the SQL model it was hard to get it very short. > QML code: http://pastebin.com/b5zkFm1q > C++ code: http://pastebin.com/5RN269kH > gdb trace: http://pastebin.com/4ZdCbZd6 > app debug output: http://pastebin.com/C4N9T1tP > > How to reproduce: > 1. Start app (in emulator, I don't have my jolla tablet yet) > 2. Long press the last element in the list and select "Delete" from the > context menu. > (It can also be triggered from other elements in the list, but the code at > pastebin is based on the last element) > > The bug is triggered if the bottom of ContextMenu is rendered below the > height of the ListView. > When long pressing the n:th element in the ListView it will crash if: > listviewHeight < n*elementHeight+(n-1)*spacing + contextMenuHeight > > Example (using pastebin code): > ListView is 338 pixels high and have 4 items inside > Each item is 44 pixels high > Spacing is 1 pixel > Context menu is 160 pixels high > > When clicking on the 4:th item (starting counting from 1) the total height > of items + spacing + context menu will be: > 4*(44) + (4-1)*1 + 160 = 339 pixels > listviewHeight=338 => crash > listviewHeight=339 => not crash > > When deleting the element in the list I do two things: > 1. model->removeRow(index) //Everything is fine after this is executed > 2. model->submitAll() //Results in segmentation fault > > I have tried replacing the model with a QML ListModel, created/filled in > QML, but then the bug is not triggered. > > Any input would be appreciated! > _______________________________________________ > SailfishOS.org Devel mailing list > To unsubscribe, please send a mail to > devel-unsubscr...@lists.sailfishos.org >
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