Android自定义View中attrs.xml的实例详解
Android自定义View中attrs.xml的实例详解
我们在自定义View的时候通常需要先完成attrs.xml文件
在values中定义一个attrs.xml 然后添加相关属性
这一篇先详细介绍一下attrs.xml的属性。
<?xml version="1.0" encoding="utf-8"?
<resources
//自定义属性名,定义公共属性
<attr name="titleText" format="string"/
<attr name="titleTextSize" format="dimension"/
<attr name="titleTextColor" format="color"/
<attr name="image" format="reference"/
<attr name="imageScaleType"
<enum name="fillXY" value="0"/
<enum name="center" value="1"/
</attr
//自定义控件的主题样式
<declare-styleable name="CustomImageView"
<attr name="titleText" /
<attr name="titleTextSize" /
<attr name="titleTextColor" /
<attr name="image" /
<attr name="imageScaleType" /
</declare-styleable
</resources reference：参考某一资源ID。
定义：
<declare-styleable name = "名称"
<attr name = "background" format = "reference" /
</declare-styleable 使用：
<ImageView
android:layout_width = "42dip"
android:layout_height = "42dip"
android:background = "@drawable/图片ID"
/ color：颜色值
定义：
<declare-styleable name = "名称"
<attr name = "textColor" format = "color" /
</declare-styleable 使用：
<TextView
android:layout_width = "42dip"
android:layout_height = "42dip"
android:textColor = "#00FF00"
/ boolean：布尔值
定义：
<declare-styleable name = "名称"
<attr name = "focusable" format = "boolean" /
</declare-styleable 使用：
<Button
android:layout_width = "42dip"
android:layout_height = "42dip"
android:focusable = "true"/ dimension：尺寸值
定义：
<declare-styleable name = "名称"
<attr name = "layout_width" format = "dimension" /
</declare-styleable 使用：
<Button
android:layout_width = "42dip"
android:layout_height = "42dip"
/ float：浮点值
定义：
<declare-styleable name = "AlphaAnimation"
<attr name = "fromAlpha" format = "float" /
<attr name = "toAlpha" format = "float" /
</declare-styleable 使用：
<alpha
android:fromAlpha = "1.0"
android:toAlpha = "0.7"
/ integer：整型值
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 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
定义：
<declare-styleable name="名称"
<attr name="orientation"
<enum name="horizontal" value="0" /
<enum name="vertical" value="1" /
</attr
</declare-styleable 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 flag：位或运算
<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
lt;/declare-styleable 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 属性定义时可以指定多种类型值
定义：
<declare-styleable name = "名称"
<attr name = "background" format = "reference|color" /
</declare-styleable 使用：
<ImageView
android:layout_width = "42dip"
android:layout_height = "42dip"
android:background = "@drawable/图片ID|#00FF00"
/ 以上就是关于Android 自定义 View 对attrs.xml的详细介绍，如有疑问请留言或者到本站社区交流，共同 进步，感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！
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原始发表：2020-09-11
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