如何在 Lollipop 中使用 setOutlineProvider 而不是 setOutline [英] How to use setOutlineProvider instead of setOutline in Lollipop

问题描述

对于早期的 L Preview，有一些如下所示的示例可以添加到您的代码中，以便使用 FAB(浮动操作按钮).

For the earlier L Preview there were some examples like shown below to add to your code in order to use an FAB (Floating Action Button).

但不幸的是，由于不再支持 setOutline 方法，我无法使用相同的代码来实现 FAB，但它似乎已被替代方法fab.setOutlineProvider(ViewOutlineProvider);"取代.谁能解释一下如何使用它?...

But unfortunately I can't use that same code to implement an FAB due to the setOutline method not being supported anymore, but it appears to have been replaced by an alternative method 'fab.setOutlineProvider(ViewOutlineProvider);'. could anyone explain how to use this?...

这可能是我遗漏的一些非常简单的东西，但任何帮助将不胜感激.

It is probably something really simple that I am missing, but any help would be much appreciated.

// Outline
int size = getResources().getDimensionPixelSize(R.dimen.fab_size);
Outline outline = new Outline();
outline.setOval(0, 0, size, size);

Button fab = (Button) findViewById(R.id.fab);
fab.setOutline(outline);
fab.setClipToOutline(true);

推荐答案

只是为了完成@ianhanniballake 的回答:

Just to complete the @ianhanniballake answer:

Button fab = (Button) findViewById(R.id.fab);
//Outline outline = new Outline();
//outline.setOval(0, 0, size, size);
//fab.setOutline(outline);  
ViewOutlineProvider viewOutlineProvider = new ViewOutlineProvider() {
        @Override
        public void getOutline(View view, Outline outline) {
            // Or read size directly from the view's width/height
            int size = getResources().getDimensionPixelSize(R.dimen.fab_size);
            outline.setOval(0, 0, size, size);
        }
    };
fab.setOutlineProvider(viewOutlineProvider);

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