Android 自定義View 控件己經不是什么新鮮話題，Android Api提供了一大堆基礎組件給我們，需要什么特定功能還需要我們繼承它們然后定制更加豐富的功能。這里介紹一下自定義屬性format

成都創新互聯公司長期為上千客戶提供的網站建設服務，團隊從業經驗10年，關注不同地域、不同群體，并針對不同對象提供差異化的產品和服務；打造開放共贏平臺，與合作伙伴共同營造健康的互聯網生態環境。為湯陰企業提供專業的成都網站建設、成都網站制作，湯陰網站改版等技術服務。擁有10余年豐富建站經驗和眾多成功案例,為您定制開發。

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/圖片ID"

                    />

2. color：顏色值。

    （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/圖片ID"
                 android:pivotX = "50%"
                  android:pivotY = "50%"
                  android:framesCount = "12"
                  android:frameDuration = "100"

                   />

7. string：字符串。

   （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/圖片ID|#00FF00"

                    />

另外有需要云服務器可以了解下創新互聯scvps.cn，海內外云服務器15元起步，三天無理由+7*72小時售后在線，公司持有idc許可證，提供“云服務器、裸金屬服務器、高防服務器、香港服務器、美國服務器、虛擬主機、免備案服務器”等云主機租用服務以及企業上云的綜合解決方案，具有“安全穩定、簡單易用、服務可用性高、性價比高”等特點與優勢，專為企業上云打造定制，能夠滿足用戶豐富、多元化的應用場景需求。

網頁名稱：Android自定義控件之自定義屬性format詳解-創新互聯
URL鏈接：http://vcdvsql.cn/article12/cedcdc.html

成都網站建設公司_創新互聯，為您提供微信公眾號、手機網站建設、商城網站、標簽優化、網站收錄、品牌網站制作

廣告

聲明：本網站發布的內容（圖片、視頻和文字）以用戶投稿、用戶轉載內容為主，如果涉及侵權請盡快告知，我們將會在第一時間刪除。文章觀點不代表本網站立場，如需處理請聯系客服。電話：028-86922220；郵箱：631063699@qq.com。內容未經允許不得轉載，或轉載時需注明來源： 創新互聯