Android：是否可以扩展xmldrawable？-Android:Isitpossibletoscaleaxmldrawable?

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This is an issue with the ScaleDrawable object which cannot be resolved in XML.

这是ScaleDrawable对象的问题，无法在XML中解析。

But it is easy, just do the following:

但这很简单，只需执行以下操作：

// Get the scale drawable from your resources
ScaleDrawable scaleDraw = (ScaleDrawable)getResources().getDrawable(R.drawable.background_scale);
// set the Level to 1 (or anything higher than 0)
scaleDraw.setLevel(1);

// Now assign the drawable where you need it
layout.setBackgroundDrawable(scaleDraw);

I tested your code using this solution and it worked fine.

我使用此解决方案测试了您的代码，它工作正常。