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如何让UITableViewCell
中的自定义子图层消失setSelected:animated:
?自定义单元子图层和UITableViewCell选择
语境:
我已经加入了CAGradientLayer
的drawRect:
里面加入了自定义背景层我UITableViewCell
,像这样:
- (void)drawRect:(CGRect)rect{
[super drawRect:rect];
[[self providerLabel] setTextColor:kOUBlue];
[self addGrayLayer];
}
- (void)addGrayLayer{
[[[self contentView] layer] insertSublayer:[self grayGradientLayer] atIndex:0];
}
- (CAGradientLayer *) grayGradientLayer{
if (!_grayGradientLayer) {
CAGradientLayer *gradient = [CAGradientLayer layer];
UIColor *white = [UIColor colorWithWhite:1 alpha:2];
UIColor *gray = [UIColor colorWithRed:0.96 green:0.96 blue:0.96 alpha:1];
[gradient setColors:@[(id)white.CGColor, (id)gray.CGColor]];
[gradient setFrame:[self bounds]];
_grayGradientLayer = gradient;
}
return _grayGradientLayer;
}
当用户点击一个细胞中,蓝色突出显示不出现。所以,我试图隐藏setSelected:animated:
的CAGradientLayer
像这样:
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
[super setSelected:selected animated:animated];
// Configure the view for the selected state
if (selected) {
[[self grayGradientLayer] setHidden:YES];
}else{
[[self grayGradientLayer] setHidden:NO];
}
[[self contentView] setNeedsDisplay];
}
出现蓝色的背景,但直到推动画开始。有没有办法让我的蓝色立即出现?我还尝试添加第二个彩色的CAGradientLayer
并手动交换它们,但在我看来,在隐藏setSelected:
中的图层后,单元格不会立即重绘。
我试图强制单元格重绘,使用setNeedsDisplay
没有运气。有任何想法吗?
我认为你需要移动'[超级的setSelected:选择动画:动画]'你的逻辑下。直到选定了超级视图呼叫集后,才会隐藏灰色图层。 – mkral