Tools命名空间属性说明

tools:node

tools:node =“merge” 全部合并 tools:node =“merge-only-attributes” 仅合并属性，内部节点移除 tools:node =“remove” 移除该节点 tools:node =“removeAll” 移除同一个父节点下所有同类型节点 tools:node =“replace” 完全替换 tools:node =“strict” 不匹配，构建失败

tools:remove

tools:remove =“attr1,attr2” 比如 tools:remove =“android:theme ,android:windowSoftInputMode ”

tools:strict

tools:strict =“attr1,attr2” 比如 tools:strict =“android:screenOrientation ”

tools:selector

tools:selector =“packageName” 选择器，结合其他tools标记使用，比如

<permission android:name="com.example.MY_PERMISSION_0"
                      tools:node="remove"
                      tools:selector="com.example.submodule.p1" />

tools:overrideLibrary

tools:overrideLibrary 覆盖

<uses-sdk tools:overrideLibrary="com.example.lib1, com.example.lib2"/>

tools:ignore

tools:ignore =“attr1,attr2” 忽略属性

<string name="show_all_apps" tools:ignore="MissingTranslation">All</string>
<ImageView tools:ignore="contentDescription" />
<FrameLayout tools:ignore="all" />
<FrameLayout tools:ignore="UnusedResources,NewApi,StringFormatInvalid" /> 根节点添加，如果该xml资源未使用不提示

tools:targetApi

tools:targetApi =“14” tools:targetApi =“ice_cream_sandwich” 目标平台版本

<GridLayout tools:targetApi="ice_cream_sandwich"/>

tools:locale

tools:locale 指定时区，只能加给resources节点

<resources xmlns:tools="http://schemas.android.com/tools" tools:locale="zh">

tools:shrinkMode

tools:shrinkMode 指定资源压缩模式，只能加给resources节点，需要build.gradle中android.buildTypes.release.shrinkResources = true tools:shrinkMode =“safe”默认 tools:shrinkMode =“strict” res/raw/keep.xml

<resources xmlns:tools="http://schemas.android.com/tools" tools:shrinkMode="strict">

tools:keep & tools:discard

以下两个结合tools:shrinkMode =“strict”使用 tools:keep =“references” 保留 tools:keep =“@layout/list_item_,@menu/main_menus” tools:discard =“references” 移除 tools:discard =“@layout/unused”

tools:parentTag

tools:parentTag 父标签类型，结合merge使用

<merge xmlns:tools="http://schemas.android.com/tools"
              tools:parentTag="android.widget.LinearLayout"/>

tools:context

tools:context =“com.example.XXXActivity” 指定当前关联上下文，只能在根节点添加

list

tools:itemCount =“20” tools:listheader =“@layout/list_header_0” 指定表头，仅AdapterView有效 tools:listitem =“@layout/list_item_0” tools:listfooter =“@layout/list_footer_0” 指定表尾，仅AdapterView有效

tools:layout

tools:layout =“@layout/some_layout”

tools:showIn

tools:showIn =“@layout/some_parent_layout” 在哪个布局中展示，通过include引入的布局的根节点添加

tools:menu

tools:menu =“menu1,menu2” 指定工具栏菜单，根节点添加

tools:actionBarNavMode

ActionBar显示模式 tools:actionBarNavMode =“standard” tools:actionBarNavMode =“tabs” tools:actionBarNavMode =“list”

NumberPicker

NumberPicker的最大最小值 tools:minValue tools:maxValue

DrawerLayout

tools:openDrawer =“start” tools:openDrawer =“end” tools:openDrawer =“left” tools:openDrawer =“right” <androidx.drawerlayout.DrawerLayout tools:openDrawer =“end”/>

TextView

tools:text @tools:sample /*

@tools:sample

@tools:sample /full_names @tools:sample /first_names @tools:sample /last_names @tools:sample /cities @tools:sample /us_zipcodes @tools:sample /us_phones @tools:sample /lorem/random @tools:sample /date/day_of_week @tools:sample /date/ddmmyy @tools:sample /date/mmddyy @tools:sample /date/hhmm @tools:sample /date/hhmmss @tools:sample /avatars — drawables @tools:sample /backgrounds/scenic — backgrounds

sampledata

app/sampledata/names

ImageView

tools:src app/sampledata/avatars app/sampledata/avatars/avatar_1.xml app/sampledata/avatars/avatar_2.xml app/sampledata/avatars/avatar_3.xml app/sampledata/avatars/avatar_4.xml

app/sampledata/users.json

{
  "data": [
    {
      "city": "Hemel Hempstead, Hertfordshire, UK",
      "avatar": "@sample/avatars"
    },
    {
      "city": "Brokenwind, Aberdeenshire, UK",
      "avatar": "@sample/avatars"
    },
    {
      "city": "Málaga, España",
      "avatar": "@sample/avatars"
    },
    {
      "city": "Batchelors Bump, Essex, UK",
      "avatar": "@sample/avatars"
    }
  ]
}

<TextView tools:text="@sample/users.json/data/city"/>
<ImageView tools:text="@sample/users.json/data/avatar"/>

android tools namespace