Question

Android include layout的时候，发现被include的layout比mainlayout要小一圈？怎么能一样大呢？

<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"
android:gravity="top"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >

<include
android:id="@+id/include_lay_game"
layout="@layout/game"/>
<include
android:id="@+id/include_lay_introduce"
layout="@layout/introduce"/>
<include
android:id="@+id/include_lay_report"
layout="@layout/report"/>"

Answer 1

android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"

这4个去掉！

追问

为什么这4行注释掉以后，下面一行就报错？

Answer 2

是因为你外层RelativeLayout设置了padding