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Android自定义控件属性 Android自定义控件属性仔细讲解

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 Android自定义控件属性详细介绍

1. reference:参考某一资源ID。 

    (1)属性定义:

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

     (2)属性使用:

  <ImageView
           android:layout_width = "42dip"
           android:layout_height = "42dip"
           android:background = "@drawable/图片ID"
           />

2. color:颜色值。

     (1)属性定义:

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

        (2)属性使用:     

          <TextView
           android:layout_width = "42dip"
           android:layout_height = "42dip"
           android:textColor = "#00FF00"
           />

 3. boolean:布尔值。 

    (1)属性定义:            

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

    (2)属性使用:

        <Button
          android:layout_width = "42dip"
          android:layout_height = "42dip"
          android:focusable = "true"
          />

 4. dimension:尺寸值。

     (1)属性定义: 

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

     (2)属性使用:            

        <Button
          android:layout_width = "42dip"
          android:layout_height = "42dip"
          />

 5. float:浮点值。

     (1)属性定义:

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

    (2)属性使用:

       <alpha
          android:fromAlpha = "1.0"
          android:toAlpha = "0.7"
          />

6. integer:整型值。 

    (1)属性定义:     

<declare-styleable name = "AnimatedRotateDrawable">
          <attr name = "visible" />
          <attr name = "frameDuration" format="integer" />
          <attr name = "framesCount" format="integer" />
          <attr name = "pivotX" />
          <attr name = "pivotY" />
          <attr name = "drawable" />
      </declare-styleable>

     (2)属性使用:      

   <animated-rotate
          xmlns:android = "http://schemas.android.com/apk/res/android" 
          android:drawable = "@drawable/图片ID" 
          android:pivotX = "50%" 
          android:pivotY = "50%" 
          android:framesCount = "12" 
          android:frameDuration = "100"
          />

 7. string:字符串。 

    (1)属性定义:

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

    (2)属性使用:

  <com.google.android.maps.MapView
          android:layout_width = "fill_parent"
          android:layout_height = "fill_parent"
          android:apiKey = "0jOkQ80oD1JL9C6HAja99uGXCRiS2CGjKO_bc_g"
          />

   8. fraction:百分数。

     (1)属性定义: 

      <declare-styleable name="RotateDrawable">
          <attr name = "visible" />
          <attr name = "fromDegrees" format = "float" />
          <attr name = "toDegrees" format = "float" />
          <attr name = "pivotX" format = "fraction" />
          <attr name = "pivotY" format = "fraction" />
          <attr name = "drawable" />
      </declare-styleable>
 

    (2)属性使用:          

 <rotate
          xmlns:android = "http://schemas.android.com/apk/res/android" 
         android:interpolator = "@anim/动画ID"
          android:fromDegrees = "0" 
         android:toDegrees = "360"
          android:pivotX = "200%"
          android:pivotY = "300%" 
         android:duration = "5000"
          android:repeatMode = "restart"
          android:repeatCount = "infinite"
          />

 9. enum:枚举值。 

    (1)属性定义: 

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

     (2)属性使用:

     <LinearLayout
          xmlns:android = "http://schemas.android.com/apk/res/android"
          android:orientation = "vertical"
          android:layout_width = "fill_parent"
          android:layout_height = "fill_parent"
          >
      </LinearLayout>

 10. flag:位或运算

     (1)属性定义:

  <declare-styleable name="名称">
          <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>

       (2)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>

      注意: 

     属性定义时可以指定多种类型值。

    (1)属性定义:

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

     (2)属性使用: 

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

 感谢阅读,希望能帮助到大家,谢谢大家对本站的支持!

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