ios - CAGradientLayer Redraw Method -


i've got draw method draws gradient layer:

    cagradientlayer *bglayer = [backgroundlayer morninggradient];     bglayer.frame = self.view.bounds;     [self.view.layer insertsublayer:bglayer atindex:[self.view.layer.sublayers count]];

but know it's inserting sublayer every time it's called lead memory problems down line , since fit screen there's no reason not deleting them before add in new one.

how can this, i've tried using:

  [self.view.layer removefromsuperlayer];

but lldb error (probably because first time it's called there no sublayer remove)

[self.view.layer removefromsuperlayer];

wrong layer! layer added not self.view.layer. self.view.layer.sublayers[i] i integer (zero or larger).

i not understand why inserting multiple sublayers that, have reason, won't try grapple issue. anyway, answers crash problem. have figure out of many sublayers want remove, , remove it.


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