自定义控件属性

attrs.xml中的属性的format（类型）说明

从其他知友那里Copy来的，致敬

• 1. reference：参考某一资源I
• （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>

Note: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" />

以上就是自定义控件中常用的属性配置，合理配置会大大提高控件的通用性

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