如何删除 AbsoluteLayout id？

Question

为什么每次我想运行我的应用程序时，语句 android:id="@+id/" 总是出现？有没有办法删除它？谢谢

 <AbsoluteLayout
            android:orientation="vertical" android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/">

错误

Error:(16, 21) Resource id cannot be an empty string (at 'id' with value '@+id/').

我了解到我们要使用它需要设置一个id。如果我删除它并运行，当我第二次运行时，该应用程序仍然 working.But，它再次出现。

Answer 1

The at sign (@) is required when you're referring to any resource object from XML. It is followed by the resource type (id in this case), a slash, then the resource name .

Resource Objects

A resource object is a unique integer name that's associated with an app resource, such as a bitmap, layout file, or string.

Every resource has a corresponding resource object defined in your project's gen/R.java file. You can use the object names in the R class to refer to your resources, such as when you need to specify a string value for the android:hint attribute. You can also create arbitrary resource IDs that you associate with a view using the android:id attribute, which allows you to reference that view from other code.

The SDK tools generate the R.java file each time you compile your app. You should never modify this file by hand.

For more information, read the guide to Providing Resources. The plus sign (+) before the resource type is needed only when you're defining a resource ID for the first time.

你必须设置 id

android:id="@+id/Your_id

+id Plus sing tells android to add or create a new id in Resources.

终于

<AbsoluteLayout
        android:orientation="vertical" android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/Your_id">

如何删除 AbsoluteLayout id？

How to remove the AbsoluteLayout id?

java

android

absolutelayout