// image from res/drawable
    int resID = getResources().getIdentifier("my_image", 
            "drawable", getPackageName());
// view
    int resID = getResources().getIdentifier("my_resource", 
            "id", getPackageName());

// string
    int resID = getResources().getIdentifier("my_string", 
            "string", getPackageName());

我发现这个类在处理资源方面非常有用。它有一些定义的方法来处理尺寸，颜色，drawables和字符串，就像这个:

public static String getString(Context context, String stringId) {
    int sid = getStringId(context, stringId);
    if (sid > 0) {
        return context.getResources().getString(sid);
    } else {
        return "";
    }
}

在Kotlin以下工作对我来说很好:

val id = resources.getIdentifier("your_resource_name", "drawable", context?.getPackageName())

如果资源放在mipmap文件夹中，你可以使用参数“mipmap”而不是“drawable”。

如果你需要在compose中这样做，你可以这样做:

val context = LocalContext.current
val drawableId = remember(iconName) {
     //this block will re-calculate each time iconName has changed
     val resId by derivedStateOf {
        context.resources.getIdentifier(
             iconName,
             "drawable",
             context.packageName
            )
        }
    if (resId != 0) resId else R.drawable.some_fallback_icon //it doesn't throw an error instead resId becomes 0, so we need to check if 0 aka couldn't find the drawable.
   }

//然后使用drawableId

like painterResource(id = drawableId)

int resourceID = 
    this.getResources().getIdentifier("resource name", "resource type as mentioned in R.java",this.getPackageName());

// image from res/drawable
    int resID = getResources().getIdentifier("my_image", 
            "drawable", getPackageName());
// view
    int resID = getResources().getIdentifier("my_resource", 
            "id", getPackageName());

// string
    int resID = getResources().getIdentifier("my_string", 
            "string", getPackageName());