漸變色主要使用類:CAGradientLayer; 直接上代碼:
UIColor *color = [UIColor colorWithWhite:2.0 alpha:0.1];CAGradientLayer *gradientLayer = [CAGradientLayer layer];gradientLayer.frame = self.tableView.bounds;//設置顏色數組gradientLayer.colors =@[(__bridge id)color.CGColor, (__bridge id)[UIColor orangeColor].CGColor];//設定變色位置數組gradientLayer.locations = @[@0.8];//設置變化范圍gradientLayer.endPoint = CGPointMake(0.0, 1.0);gradientLayer.startPoint = CGPointMake(0.0, 0.0);//添加到根視圖控制器的layer上[self.view.layer addSublayer:gradientLayer];效果圖:

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