android 自定义控件属性

在res/values下新建attrs.xml文件:

<?xml version="1.0" encoding="utf-8"?>
<resources>
	<declare-styleable name="MyViewGroup">
		<attr name="iposition" format="string" />
		<attr name="age" format="integer" />
		<attr name="sex" format="boolean" />
		<attr name="color" format="reference|color" />
	</declare-styleable>
</resources>

界面布局文:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    xmlns:iaiai="http://schemas.android.com/apk/res/com.iaiai.an"
    android:background="@android:color/white"
    android:orientation="vertical" >
    <com.iaiai.an.MyViewGroup android:layout_width="match_parent" android:layout_height="match_parent" iaiai:iposition="left" iaiai:age="50" iaiai:sex="true" iaiai:color="@drawable/ic_launcher"/>
</LinearLayout>

java代码:

public MyViewGroup(Context context, AttributeSet attrs) {
	super(context, attrs);
	TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.MyViewGroup);
	Log.i("********","自定义属性iposition(string):"+typedArray.getString(R.styleable.MyViewGroup_iposition));
	Log.i("********","自定义属性age(int):"+typedArray.getInt(R.styleable.MyViewGroup_age,0));
	Log.i("********","自定义属性sex(boolean):"+typedArray.getBoolean(R.styleable.MyViewGroup_sex,false));
	Log.i("********","自定义属性color(reference|color):"+typedArray.getResourceId(R.styleable.MyViewGroup_color, -1));
	Log.i("********","自定义属性color(reference|color):"+typedArray.getColor(R.styleable.MyViewGroup_color, 0));
	typedArray.recycle();
}

====================================================
下面说一下:declare-styleable中format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>
特别要注意：
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"
/>