如何将String转换为Drawable [英] How can I convert String to Drawable

问题描述

我在drawable文件夹中有很多图标，它们的名称为String.如何访问可绘制文件夹并更改背景imageView(或任何视图)，请动态使用这些名称.谢谢

I have many icon in drawable folder and I have their name as String. How can I access to drawable folder and change background imageView (or any view) use these name in dynamically. Thanks

推荐答案

可以使用反射来完成:

String name = "your_drawable";
final Field field = R.drawable.getField(name);
int id = field.getInt(null);
Drawable drawable = getResources().getDrawable(id);

或使用Resources.getIdentifier():

String name = "your_drawable";
int id = getResources().getIdentifier(name, "drawable", getPackageName());
Drawable drawable = getResources().getDrawable(id);

然后在两种情况下都使用它来设置可绘制对象:

Then use this for setting the drawable in either case:

view.setBackground(drawable)

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