[Android自定义控件]自定义属性attrs.xml中format

时间:2022-02-06 16:43:40

前言

在我们自定义控件的时候,需要自己定义布局xml对象属性,就需要styles.xml自定义,然后再自定义java文件中获取信息,记录方便自己使用


使用

xml首先需要自定义命名空间

xmlns: zkbilian ="http://schemas.android.com/apk/res-auto" 
  • 1.reference:参考某一资源ID

属性定义:

            <declare-styleable name = "名称">
                   <attr name = "background" format = "reference" />
            </declare-styleable>

属性使用:

             <ImageView
                     android:layout_width = "59dp"
                     android:layout_height = "42dp"
                     zkbilian:background = "@drawable/资源ID"
                     />
  • 2.color:颜色值

属性定义:

            <declare-styleable name = "HavorldAttribute">  
                   <attr name = "textColor" format = "color" />  
            </declare-styleable>  

属性使用:

          <TextView  
            android:layout_width = "42dip"  
            android:layout_height= "42dip"  
            havorld:textColor = "#00FF00" />  
  • 3.boolean:布尔值

属性定义:

          <declare-styleable name = "HavorldAttribute">  
               <attr name = "focusable" format = "boolean" />  
          </declare-styleable> 

属性使用:

          <Button  
             android:layout_width = "42dip"  
             android:layout_height = "42dip"  
         havorld:focusable ="true"/>  
  • 4.dimension:尺寸值

属性定义:

            <declare-styleable name = "HavorldAttribute">  
               <attr name = "layout_width" format = "dimension" />  
            </declare-styleable>

属性使用:

            <Button havorld:layout_width ="42dip" havorld:layout_height ="42dip"/>
  • 5. float:浮点值

属性定义:

           <declare-styleable name = "HavorldAttribute">  
               <attr name = "fromAlpha" format = "float" />  
               <attr name = "toAlpha" format = "float" />  
           </declare-styleable>  

属性使用:

         <alpha havorld:fromAlpha ="1.0" havorld:toAlpha ="0.7"/>  
  • 6. integer:整型值

属性定义:

           <declare-styleable name = "HavorldAttribute">  
               <attr name = "frameDuration" format="integer" />  
               <attr name = "framesCount" format="integer" />  
           </declare-styleable>  

属性使用:

           <animated-rotate havorld:framesCount ="12" havorld:frameDuration ="100" />  
  • 7. string:字符串

属性定义:

         <declare-styleable name = " HavorldAttribute ">  
               <attr name = "apiKey" format = "string" />  
         </declare-styleable>  

属性使用:

           <com.google.android.maps.MapView  
                 android:layout_width = "match_parent"  
                 android:layout_height= "match_parent"  
                 havorld:apiKey ="0jOkQ80oD1JL9C6HAja99uGXCRiS2CGjKO_bc_g"/>  
  • 8.fraction:百分数

属性定义:

          <declare-styleable name=" HavorldAttribute ">  
               <attr name = "pivotX" format = "fraction" />  
               <attr name = "pivotY" format = "fraction" />  
          </declare-styleable>  

属性使用:

          <rotate  
  android:interpolator = "@anim/动画ID"  
    havorld:pivotX ="200%"  
    havorld:pivotY ="300%" />  
  • 9. enum:枚举值

属性定义:

            <declare-styleable name="HavorldAttribute">  
              <attr name="orientation">  
                  <enum name="horizontal" value="0" />  
                  <enum name="vertical"value="1" />  
               </attr>              
            </declare-styleable> 

属性使用:

          <LinearLayout  
            havorld:orientation ="vertical"  
            android:layout_width = "match_parent"  
            android:layout_height = "match_parent"/>                   
          </LinearLayout>  
  • 10.flag:位或运算

属性定义:

           <declare-styleable name="HavorldAttribute">  
              <attr name="windowSoftInputMode">  
               <flag name = "stateUnspecified" value = "0" />  
               <flag name = "stateUnchanged" value = "1" />  
               <flag name = "stateHidden" value = "2" />  
               <flag name = "stateAlwaysHidden" value = "3"/>  
               <flag name = "stateVisible" value = "4" />  
               <flag name = "stateAlwaysVisible" value = "5" />  
               <flag name = "adjustUnspecified" value = "0x00"/>  
               <flag name = "adjustResize" value = "0x10" />  
               <flag name = "adjustPan" value = "0x20" />  
               <flag name = "adjustNothing" value = "0x30" />  
        </attr>           
            </declare-styleable>  

属性使用:

           <activity  
              android:name = ".StyleAndThemeActivity"  
              android:label = "@string/app_name"  
              android:windowSoftInputMode = "stateUnspecified | stateUnchanged | stateHidden">  
            <intent-filter>  
             <action android:name = "android.intent.action.MAIN" />  
             <category android:name = "android.intent.category.LAUNCHER" />  
            </intent-filter>  
            </activity>  

PS: 属性定义时可以指定多种类型值 如

属性定义:

<declare-styleable name = "HavorldAttribute">  
       <attr name = "background" format = "reference|color"/>  
</declare-styleable>  

属性使用:

<ImageView  
    android:layout_width = "42dip"  
    android:layout_height= "42dip"  
    havorld:background ="@drawable/图片ID|#00FF00"/>