{
	"id": "139296",
	"key": "TIMOB-17994",
	"fields": {
		"issuetype": {
			"id": "1",
			"description": "A problem which impairs or prevents the functions of the product.",
			"name": "Bug",
			"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": [],
		"resolution": null,
		"resolutiondate": null,
		"created": "2014-11-08T13:13:56.000+0000",
		"priority": null,
		"labels": [
			"alloy",
			"applyProperties",
			"backgroundImage"
		],
		"versions": [],
		"issuelinks": [],
		"assignee": null,
		"updated": "2020-01-21T09:49:20.000+0000",
		"status": {
			"description": "The issue is open and ready for the assignee to start work on it.",
			"name": "Open",
			"id": "1",
			"statusCategory": {
				"id": 2,
				"key": "new",
				"colorName": "blue-gray",
				"name": "To Do"
			}
		},
		"components": [],
		"description": "h1. The problem\r\n\r\nWhile working on an Alloy project that used {{autoStyle}} on some views, I sow these 4 lines scrolling by all the time:\r\n\r\n{code}\r\n[WARN]  could not find image: <null>\r\n[WARN]  could not find image: <null>\r\n[WARN]  could not find image: <null>\r\n[WARN]  could not find image: <null>\r\n{code}\r\n\r\nh1. The source\r\n\r\nI tracked it down to a call to {{$.removeClass($.proxy, \\['class'\\])}}.\r\n\r\nWhen Alloy removes a class it will use a [RESET object|https://github.com/appcelerator/alloy/blob/master/Alloy/lib/alloy.js#L38] as defaults for the remaining styles.\r\n\r\nI then made a test case that reproduces:\r\n\r\n{code:javascript}\r\nvar w = Ti.UI.createWindow({\r\n  backgroundColor: 'green'\r\n});\r\n\r\nvar v = Ti.UI.createButton({        // replacing with Ti.UI.View reduces from 4 to 0 warning (!)\r\n  width: 100,\r\n  height: 100,\r\n  backgroundColor: 'red'\r\n});\r\nw.add(v);\r\n\r\nw.open();\r\n\r\nv.applyProperties({\r\n  \"backgroundColor\": 'red',         // removing reduces from 4 to 2 warnings\r\n  \"shadowColor\": null,              // removing reduces from 4 to 2 warnings\r\n  \"shadowOffset\": null,             // removing reduces from 4 to 2 warnings\r\n  \"backgroundImage\": null,          // removing reduces from 4 to 1 warning (!)\r\n  \"backgroundRepeat\": null,         // removing reduces from 4 to 2 warnings\r\n  \"backgroundSelectedColor\": null,  // removing reduces from 4 to 2 warnings\r\n  \"backgroundSelectedImage\": null,  // removing reduces from 4 to 1 warning (!)\r\n  \"visible\": true,                  // removing reduces from 4 to 2 warnings\r\n  \"backgroundGradient\": {},         // removing reduces from 4 to 2 warnings\r\n  \"borderRadius\": 0,                // removing reduces from 4 to 2 warnings\r\n  \"backgroundLeftCap\": 0,           // removing reduces from 4 to 2 warnings\r\n  \"backgroundTopCap\": 0             // removing reduces from 4 to 2 warnings\r\n});\r\n{code}\r\n\r\nThe actually error must originate from:\r\nhttps://github.com/appcelerator/titanium_mobile/blob/58198c641d77e17d156431666e80bae732b5c130/iphone/Classes/TiUIView.m#L315\r\n\r\nBut what is weird is that on line 311 of the above source, it checks for the image to be {{nil}} which I assume the {{null}} values of the above test case should have been converted to.\r\n\r\nIt's also striking that these warnings don't show for a {{View}}, but only for a {{Button}}. So the issue must be somewhere between lines 233 and 255 of [TiUIButton.m|https://github.com/appcelerator/titanium_mobile/blob/58198c641d77e17d156431666e80bae732b5c130/iphone/Classes/TiUIButton.m#L233-L255]",
		"attachment": [],
		"flagged": false,
		"summary": "Different button-properties set to NULL give: [WARN]  could not find image: <null>",
		"creator": {
			"name": "fokkezb",
			"key": "fokke",
			"displayName": "Fokke Zandbergen",
			"active": true,
			"timeZone": "Europe/Amsterdam"
		},
		"subtasks": [],
		"reporter": {
			"name": "fokkezb",
			"key": "fokke",
			"displayName": "Fokke Zandbergen",
			"active": true,
			"timeZone": "Europe/Amsterdam"
		},
		"environment": "SDK 3.4.0.GA",
		"comment": {
			"comments": [
				{
					"id": "341848",
					"author": {
						"name": "hknoechel",
						"key": "hansknoechel",
						"displayName": "Hans Knöchel",
						"active": true,
						"timeZone": "Europe/Berlin"
					},
					"body": "Having the same issue using $.resetClass(view, 'class1 class2');",
					"updateAuthor": {
						"name": "hknoechel",
						"key": "hansknoechel",
						"displayName": "Hans Knöchel",
						"active": true,
						"timeZone": "Europe/Berlin"
					},
					"created": "2015-02-03T17:19:13.000+0000",
					"updated": "2015-02-03T17:19:13.000+0000"
				},
				{
					"id": "449735",
					"author": {
						"name": "NewportSolutions",
						"key": "newportsolutions",
						"displayName": "Joe",
						"active": true,
						"timeZone": "America/Los_Angeles"
					},
					"body": "Still having this issue on 7.5.1GA when using $.resetClass(view, 'class1 class2');",
					"updateAuthor": {
						"name": "NewportSolutions",
						"key": "newportsolutions",
						"displayName": "Joe",
						"active": true,
						"timeZone": "America/Los_Angeles"
					},
					"created": "2019-07-11T17:34:10.000+0000",
					"updated": "2019-07-11T17:34:10.000+0000"
				}
			],
			"maxResults": 3,
			"total": 3,
			"startAt": 0
		}
	}
}