Android development tips include avoiding code duplication

In the layout, often some of the parts are repeated, such as title or foot place, the simplest way is to copy the past directly,

The use of include is described here, and students with C + + or C experience can see that the other layout is included.

First look at the effect of the implementation:

Inside and out there are two text layout, is included in the include, directly see the code

Activity_main.xml:

<relativelayout xmlns:android= "http://schemas.android.com/apk/res/android"    xmlns:tools= "http// Schemas.android.com/tools "    android:layout_width=" match_parent "    android:layout_height=" Match_parent " >    <include        android:layout_width= "fill_parent"        android:layout_height= "Wrap_content        " Android:layout_alignparenttop= "true"        android:layout_margintop= "30DP"        layout= "@layout/header"/>    <viewstub        android:id= "@+id/pic_stub"        android:layout_width= "wrap_content"        android:layout_ height= "Wrap_content"        android:layout_centerinparent= "true"        android:inflatedid= "@+id/pic_view_id_ After_inflate "        android:layout=" @layout/pic_view "/>    <include layout=" @layout/footer "/></ Relativelayout>

Very clear two include, as for the middle of the viewstub, in the next blog to explain

Address: http://blog.csdn.net/jason0539/article/details/26132267

I used two include in the code.

The first one is more complex, set the property so that it's at the top of the layout

The second one is concise, the properties are not set, but the location is correct, at the bottom of the layout,

The purpose of this is to show the two settings of the Include attribute, which can be set in the include tag or in the layout to be referenced

The two layout files that are included are as follows:

Header.xml

<textview xmlns:android= "http://schemas.android.com/apk/res/android"    android:layout_width= "0DP    " android:layout_height= "0DP"    android:gravity= "center_horizontal"    android:text= "Header without Properties!" ></TextView>

The width height of the polygon is set to 0, which is to set its layout in the layout with the include tag.

Footer.xml

<textview xmlns:android= "http://schemas.android.com/apk/res/android"    android:layout_width= "Fill_parent"    android:layout_height= "wrap_content"    android:layout_alignparentbottom= "true"    android:layout_ Marginbottom= "30DP"    android:gravity= "center_horizontal"    android:text= "with properties!"/>

The properties of this set are very complete, so in the layout of the include tag is nothing set, direct reference on the line,

The two methods have the same effect and look like a person's preference.

jason0539

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