渲染模式不起作用的图像

Question

我想改变图像的色调。我想知道为什么跟随代码不起作用：

self.itemImage = [UIImageView new];
    self.itemImage.contentMode = UIViewContentModeScaleAspectFit;
    [_backgroundForCell addSubview:self.itemImage];

...

 _itemImage.image = [UIImage imageNamed:vm.imgName];

...

 self.imageView.image = [self.imageView.image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
        [self.imageView setTintColor:[UIColor redColor]];

我仍然看到这个：

Answer 1

您可能忘记重命名变量：

替换

self.imageView.image = [self.imageView.image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
        [self.imageView setTintColor:[UIColor redColor]];

与

self.itemImage.image = [self.itemImage.image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
        [self.itemImage setTintColor:[UIColor redColor]];