Memory Leak When Mix Two Atlases In One UIPanel

[winddarklj]

As in the graph, in Profiler(Editor mode),  after I remove all references and use UnloadUnusedAssets, there is still Wooden Atlas remained in Memory. I tested it, and found if I use one UIAtlas in one Panel,  the memory will all released; but if I use sprites from two UIAtlases, one of Atlases will not released. I know it is a bad practise using two UIAtlases in one UIPanel which matters with drawcall, but I wonder whether it is a bug?

[winddarklj]

I found the problem is not about two atlases, but UIFont, in memory, "Arimo20" GameObject is never released. I tested with one with UILabel, and one without it, and confirm that the only difference causing memory leak is whether I add UILabel

[ArenMook]

Labels reference a font in order to print text. If you don't set the font to null, the label will obviously keep on referencing it. Do you ever set UILabel's bitmapFont to null?

[winddarklj]

Labels reference a font in order to print text. If you don't set the font to null, the label will obviously keep on referencing it. Do you ever set UILabel's bitmapFont to null?

Hi Aren, I have released UILabel for sure, only UIAtlas is still in the memory, I found the problem is actually NGUIText.bitmapFont is keeping referencing it. I'm using 3.6.3b.

[ArenMook]

Ah, so set NGUIText.bitmapFont to null before calling UnloadUnusedAssets.

[winddarklj]

Yep I have done it and then it works well. Thanks buddy.