从字符串设置背景可绘制资源 [英] Set Background Drawable Resource from String

问题描述

我到处都看过，但是找不到通过字符串值以编程方式设置背景资源的示例吗?

I have looked everywhere but cannot find an example of programmatically setting a background resource from a string value?

例如:

Drawable a = getResources().getDrawable( R.drawable.a );
Drawable b = getResources().getDrawable( R.drawable.b );
Drawable c = getResources().getDrawable( R.drawable.c );
abc.setBackgroundResource("b");

这是可能的还是我必须作为一个大的switch语句来做?

Is this possible or would I have to do it as a big switch statement?

推荐答案

您为此目的具有 getResources().getIdentifier .它从名称中返回资源的ID.

you have getResources().getIdentifier for this purpose. It returns the id of the resources from its name.

例如:

 int resId = getResources().getIdentifier("b", "drawable", getPackageName());

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