{ "id": "176171", "key": "TIMOB-28431", "fields": { "issuetype": { "id": "4", "description": "An improvement or enhancement to an existing feature or task.", "name": "Improvement", "subtask": false }, "project": { "id": "10153", "key": "TIMOB", "name": "Titanium SDK/CLI", "projectCategory": { "id": "10100", "description": "Titanium and related SDKs used in application development", "name": "Client" } }, "fixVersions": [ { "id": "21201", "description": "", "name": "Release 10.1.0", "archived": false, "released": true, "releaseDate": "2021-09-28" } ], "resolution": { "id": "1", "description": "A fix for this issue is checked into the tree and tested.", "name": "Fixed" }, "resolutiondate": "2021-08-16T11:44:12.000+0000", "created": "2021-04-28T19:37:48.000+0000", "priority": { "name": "Critical", "id": "1" }, "labels": [ "android", "parity", "titanium" ], "versions": [], "issuelinks": [], "assignee": { "name": "gmathews", "key": "gmathews", "displayName": "Gary Mathews", "active": true, "timeZone": "America/Los_Angeles" }, "updated": "2021-08-16T11:44:12.000+0000", "status": { "description": "The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.", "name": "Closed", "id": "6", "statusCategory": { "id": 3, "key": "done", "colorName": "green", "name": "Done" } }, "components": [ { "id": "10202", "name": "Android", "description": "Android Platform" } ], "description": "Attempting to programmatically \"scroll to bottom\" using Ti 9.3.x ListView#scrollToItem on Android results in very poor ux performance with a time-consuming and choppy scrolling effect. \r\nEg: $.listView.scrollToItem(0, ITEM_COUNT - 1)\r\n\r\nAfter regressing different Titanium SDK's I determined this issue first occurred in 9.3.x, where previously (ie 9.2.2.GA and before) the \"scroll to bottom\" was essentially instant.\r\n\r\nI have attached a sample project that demonstrates the problem as well 2 videos showing the sample app running on both 9.3.2.GA and 9.2.2.GA", "attachment": [ { "id": "67912", "filename": "9.2.2.GA.mov", "author": { "name": "btknorr", "key": "btknorr", "displayName": "Brian Knorr", "active": true, "timeZone": "America/Chicago" }, "created": "2021-04-28T19:36:41.000+0000", "size": 2340921, "mimeType": "video/quicktime" }, { "id": "67913", "filename": "9.3.2.GA.mov", "author": { "name": "btknorr", "key": "btknorr", "displayName": "Brian Knorr", "active": true, "timeZone": "America/Chicago" }, "created": "2021-04-28T19:36:14.000+0000", "size": 3830532, "mimeType": "video/quicktime" }, { "id": "67914", "filename": "sample-app.zip", "author": { "name": "btknorr", "key": "btknorr", "displayName": "Brian Knorr", "active": true, "timeZone": "America/Chicago" }, "created": "2021-04-28T19:34:20.000+0000", "size": 8653849, "mimeType": "application/zip" } ], "flagged": false, "summary": "Android: Implement ListView#scrollToItem animation argument", "creator": { "name": "btknorr", "key": "btknorr", "displayName": "Brian Knorr", "active": true, "timeZone": "America/Chicago" }, "subtasks": [], "reporter": { "name": "btknorr", "key": "btknorr", "displayName": "Brian Knorr", "active": true, "timeZone": "America/Chicago" }, "environment": "Android", "closedSprints": [ { "id": 1226, "state": "closed", "name": "2021 Sprint 14", "startDate": "2021-07-20T22:25:18.817Z", "endDate": "2021-08-13T22:25:00.000Z", "completeDate": "2021-09-22T21:41:17.520Z", "originBoardId": 114 } ], "comment": { "comments": [ { "id": "458636", "author": { "name": "gmathews", "key": "gmathews", "displayName": "Gary Mathews", "active": true, "timeZone": "America/Los_Angeles" }, "body": "Android will animate the scrolling to an item by default, a parity improvement could be made by implementing the animation argument for this method", "updateAuthor": { "name": "gmathews", "key": "gmathews", "displayName": "Gary Mathews", "active": true, "timeZone": "America/Los_Angeles" }, "created": "2021-04-29T17:58:01.000+0000", "updated": "2021-04-29T17:58:01.000+0000" }, { "id": "458639", "author": { "name": "gmathews", "key": "gmathews", "displayName": "Gary Mathews", "active": true, "timeZone": "America/Los_Angeles" }, "body": "master: https://github.com/appcelerator/titanium_mobile/pull/12762", "updateAuthor": { "name": "gmathews", "key": "gmathews", "displayName": "Gary Mathews", "active": true, "timeZone": "America/Los_Angeles" }, "created": "2021-04-29T21:44:37.000+0000", "updated": "2021-04-29T21:44:37.000+0000" } ], "maxResults": 2, "total": 2, "startAt": 0 } } }