如何申请一个彩色滤光片与所有儿童期 [英] How to apply a color filter to a view with all children

问题描述

我如何灰了看法一致，其中包含许多不同的项目 - ImageViews，TextViews，背景图像。我一定要单独变灰每一件事情？还是有办法适用相同的颜色过滤器将所有？

How do I grey out a view uniformly which contains many different items - ImageViews, TextViews, background image. Do I have to grey out each thing individually? Or is there a way to apply the same color filter to all?

推荐答案

除非别人有更好的答案，我现在的方法separatedly花白的每一项。

Unless somebody else has a better answer, my current method is greying out each item separatedly.

PorterDuffColorFilter greyFilter = new PorterDuffColorFilter(Color.GRAY, PorterDuff.Mode.MULTIPLY);
myLayout.getBackground().setColorFilter(greyFilter);
myImageView.setColorFilter(greyFilter);
myTextView.setTextColor(0xff777777);

有关更多的或嵌套的孩子可能与的instanceof循环将是合适的，但我并不需要它。

For more or nested children probably a loop with instanceof would be suitable but I don't need it.

编辑：此过滤器实际上不是灰色的，更好的过滤器是在这里：绘制对象=＆GT;灰度 这可以在相同的方式使用。

This filter isn't actually grey, a better filter is here: Drawable => grayscale Which can be used in the same way.

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