以编程方式将 id 添加到 R.id

我正在创建一个 EditText对象，然后尝试在单元测试中引用它。为这个动态创建的对象添加一个新的 id到 R.id的最佳方法是什么，以便我以后可以在单元测试中通过 findViewById()引用它？

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最佳答案

You can set ID's you'll use later in R.id class using an xml resource file, and let Android SDK give them unique values during compile time.

res/values/ids.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>


<item name="my_edit_text_1" type="id"/>
<item name="my_button_1" type="id"/>
<item name="my_time_picker_1" type="id"/>


</resources>

To use it in code:

myEditTextView.setId(R.id.my_edit_text_1);

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You can use setId for every view and assign any positive number, based on google developer:

Sets the identifier for this view. The identifier does not have to be unique in this view's hierarchy. The identifier should be a positive number.Link

so you can use

EveryView.setId(int);

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Here's my solution as an extension function in kotlin:

/* sets a valid id that isn't in use */
fun View.findAndSetFirstValidId() {
var i: Int
do {
i = Random.nextInt()
} while (findViewById<View>(i) != null)
id = i
}