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There are several different ways to determine an identifier. What is the difference?

There are several different ways to determine an identifier:

android:id="@id/android:list"
android:id="@+id/android:list"
android:id="@+id/confirm"

What is the difference?

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3 answers

android: id = "@ id / android: list" refers to android.R.id.list. android.R contains resources that are platform related. There are many of these standard resources, they are all listed in the JavaDoc .

@+ , android: id = "@+ id/confirm" R- , .. R.id.confirm. s > a > Dev.

, android: id = "@+ id/android: list", , .

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+ id/label , id = label . , android.jar, , , android: id = "@android: id/list", , id value = list android .

. : http://groups.google.com/group/android-developers/browse_thread/thread/dc8023b221351aa7

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"+" means add it to your current R.java project. Those who have no pluses are resources inherited from the framework.

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Source: https://habr.com/ru/post/1739416/

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