Android 自定義屬性 attr format取值類型

最近在研究自定義控件，自己感覺總是記不住這些屬性的含義，是以今天寫了一篇部落格記錄下來。好記性不如爛筆頭啊！！！！！

1. reference：參考某一資源ID。 

    （1）屬性定義： 

            <declare-styleable name = "名稱"> 

                   <attr name = "background" format = "reference" /> 

            </declare-styleable> 

    （2）屬性使用： 

             <ImageView 

                     android:layout_width = "42dip" 

                     android:layout_height = "42dip" 

                     android:background = "@drawable/圖檔ID" 

                     /> 

2. color：顔色值。 

    （1）屬性定義： 

            <declare-styleable name = "名稱"> 

                   <attr name = "textColor" format = "color" /> 

            </declare-styleable> 

    （2）屬性使用： 

            <TextView 

                     android:layout_width = "42dip" 

                     android:layout_height = "42dip" 

                     android:textColor = "#00FF00" 

                     /> 

3. boolean：布爾值。 

    （1）屬性定義： 

            <declare-styleable name = "名稱"> 

                   <attr name = "focusable" format = "boolean" /> 

            </declare-styleable> 

    （2）屬性使用： 

            <Button 

                    android:layout_width = "42dip" 

                    android:layout_height = "42dip" 

                    android:focusable = "true" 

                    /> 

4. dimension：尺寸值。 

    （1）屬性定義： 

            <declare-styleable name = "名稱"> 

                   <attr name = "layout_width" format = "dimension" /> 

            </declare-styleable> 

    （2）屬性使用： 

            <Button 

                    android:layout_width = "42dip" 

                    android:layout_height = "42dip" 

                    /> 

5. float：浮點值。 

    （1）屬性定義： 

            <declare-styleable name = "AlphaAnimation"> 

                   <attr name = "fromAlpha" format = "float" /> 

                   <attr name = "toAlpha" format = "float" /> 

            </declare-styleable> 

    （2）屬性使用： 

            <alpha 

                   android:fromAlpha = "1.0" 

                   android:toAlpha = "0.7" 

                   /> 

6. integer：整型值。 

    （1）屬性定義： 

            <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）屬性使用： 

            <animated-rotate 

                   xmlns:android = "http://schemas.android.com/apk/res/android" 

                   android:drawable = "@drawable/圖檔ID" 

                   android:pivotX = "50%" 

                   android:pivotY = "50%" 

                   android:framesCount = "12" 

                   android:frameDuration = "100" 

                   /> 

7. string：字元串。 

    （1）屬性定義： 

            <declare-styleable name = "MapView"> 

                   <attr name = "apiKey" format = "string" /> 

            </declare-styleable> 

    （2）屬性使用： 

            <com.google.android.maps.MapView 

                    android:layout_width = "fill_parent" 

                    android:layout_height = "fill_parent" 

                    android:apiKey = "0jOkQ80oD1JL9C6HAja99uGXCRiS2CGjKO_bc_g" 

                    /> 

8. fraction：百分數。 

    （1）屬性定義： 

            <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）屬性使用： 

            <rotate 

                   xmlns:android = "http://schemas.android.com/apk/res/android" 

　　             android:interpolator = "@anim/動畫ID" 

                   android:fromDegrees = "0" 

　　             android:toDegrees = "360" 

                   android:pivotX = "200%" 

                   android:pivotY = "300%" 

　　             android:duration = "5000" 

                   android:repeatMode = "restart" 

                   android:repeatCount = "infinite" 

                   /> 

9. enum：枚舉值。 

    （1）屬性定義： 

            <declare-styleable name="名稱"> 

                   <attr name="orientation"> 

                          <enum name="horizontal" value="0" /> 

                          <enum name="vertical" value="1" /> 

                   </attr>            

            </declare-styleable> 

    （2）屬性使用： 

            <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：位或運算。 

     （1）屬性定義： 

             <declare-styleable name="名稱"> 

                    <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）屬性使用： 

            <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： 

     屬性定義時可以指定多種類型值。 

    （1）屬性定義： 

            <declare-styleable name = "名稱"> 

                   <attr name = "background" format = "reference|color" /> 

            </declare-styleable> 

    （2）屬性使用： 

             <ImageView 

                     android:layout_width = "42dip" 

                     android:layout_height = "42dip" 

                     android:background = "@drawable/圖檔ID|#00FF00" 

                     />