Android中自定义属性的格式详解

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"

                     />