Android 并获取带有 id 的视图作为字符串 [英] Android and getting a view with id cast as a string

问题描述

在 Android 项目的 Java 代码中，如果您想要视图资源的引用，您可以执行以下操作:

In the Java code of an Android project if you want the reference for a view resource you can do something like:

View addButton = findViewById(R.id.button_0);

在上面的 R.id.button_0 不是字符串.是否可以通过字符串动态引用资源，例如R.id.button_0"?

In the above R.id.button_0 is not a String. Is it possible to dynamically refer to a resource by a string, such as "R.id.button_0"?

我想用R.id.button_%i"来引用一个按钮，其中%i被一些有效的索引替换.

I'd like to refer to a button by "R.id.button_%i" where %i is replaced by some valid index.

推荐答案

int resID = getResources().getIdentifier("button_%i",
    "id", getPackageName());
View addButton = findViewById(resID);

其中 %i 被一些有效索引替换.

where %i is replaced by some valid index.

getResources() 方法属于 Context 类，因此您可以直接从 Activity 使用它.如果您不在活动中，则使用上下文访问:(myCtxt.getResources()).

The getResources() method belongs to the Context class, so you can use that directly from an Activity. If you are not inside an activity, then use a context to access: (myCtxt.getResources()).

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