Android uses include in layout XML to complete static loading

Android uses include in layout XML to complete static loading

Include static loading:
Not only can you load the layout, you can also load the control (the label name of the control is at the outermost layer)
There is a layout attribute in the include tag that is specifically used for loading.

In the Android layout style definition, you can use the XML file for easy implementation, sometimes for the reuse of modules, the include tag can be used to achieve this purpose. For example:

The description of the official website for Android development is here.
Among them, there are references to:

Similarly, you can override all the layout parameters. This means, any android:layout_* attribute can is used with the <include> tag.

This means that any android:layout_* attribute can be applied to the tag.

If you use the following code:

<Relativelayout    android:layout_width="fill_parent"    android:layout_height="wrap_content" >    <Textview        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/somestring"        android:id="@+id/top" />    <include layout="@layout/otherlayout"        

includeThe discovery of the otherlayout, and not in the id/top as we expected under this textview, but ignores the Android:layout_below attribute. After Google's discovery, many people encounter similar problems.

A workaround is to wrap the linearlayout outside of the include, as follows:

<Linearlayout    android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:layout_below="@id/top" >    

A better solution was found on the Statckoverflow: the layoutwidth and layoutHeight properties must be overloaded at the same time, and the other layout_* properties will work, no this will be ignored. The above example should be written like this:

<include layout="@layout/otherlayout">    android:layout_height="wrap_content"    android:layout_width="fill_parent"    android:layout_below="@id/top" />

In addition, about the reuse of XML, you can also use the merge tag, the merge tag is mainly used to optimize the display, reduce the level of the view tree, you can refer to here: https://developer.android.com/resources/articles/ layout-tricks-merge.html, translated version here: http://apps.hi.baidu.com/share/detail/20871363

Original: http://www.race604.com/using-include-in-layout/

Android uses include in layout XML to complete static loading