Android自定义控件_自定义属性format详解

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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" />

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" />

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" />

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" />

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" />

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" />

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" />

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" />

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" />

flag：位或运算。

（1）属性定义：
        <declare-styleable name="名称">
            <attr name="windowSoftInputMode">
                <flag name = "stateUnspecified" value = "0" />
                <flagname = "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" />

声明：

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