AttributedLabel重影

- (void)drawRect:(CGRect)rect{

//    NSArray * layersArr = self.layer.sublayers;

//    for( CATextLayer *textLayer in layersArr ){

//        [textLayer removeFromSuperlayer];

//    }

[[self layer] setSublayers:nil];

CATextLayer *textLayer = [CATextLayer layer];

textLayer.string = _attString;

textLayer.frame = CGRectMake(0, 0, self.frame.size.width, self.frame.size.height);

textLayer.contentsScale = 2;

[self.layer addSublayer:textLayer];

}

初期采用

//    NSArray * layersArr = self.layer.sublayers;

//    for( CATextLayer *textLayer in layersArr ){

//        [textLayer removeFromSuperlayer];

//    }

方式来解决，后面会出现崩溃。

最终采用：

[[self layer] setSublayers:nil];

的方式来解决。