Android attrs文件（自定义）属性详解

在res/values文件夹下新建attrs.xml文件：

<declare-styleable name="MyView">    <attr name="a" format="integer">attr>    <attr name="b" format="boolean">attr>    <attr name="c" format="color">attr>    <attr name="d" format="dimension">attr>    <attr name="e">attr>    <attr name="f">attr>    <attr name="g" format="float">attr>    <attr name="h" format="fraction">attr>    <attr name="i" format="reference">attr>    <attr name="j" format="string">attr>declare-styleable><attr name="e">    <enum name="e1" value="1">enum>    <enum name="e2" value="2">enum>attr><attr name="f">    <flag name="f1" value="1">flag>    <flag name="f2" value="2">flag>attr>

使用：

.demo4.MyViewandroid:layout_width="match_parent"android:layout_height="match_parent"app:a="1"app:b="true"app:c="#ffffff"app:d="20dp"app:e="e1"app:f="f1|f2"app:g="0.1"app:h="100%"app:i="@mipmap/ic_launcher"app:j="字符串" />

获取：

package wkk.demo4;import android.content.Context;import android.content.res.TypedArray;import android.util.AttributeSet;import android.view.View;/** * Created by wkk on 2016/5/13. */public class MyView extends View {    public MyView(Context context, AttributeSet attrs) {        super(context, attrs);        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.MyView);        int a = typedArray.getInt(R.styleable.MyView_a, 0);        boolean b = typedArray.getBoolean(R.styleable.MyView_b, true);        int c = typedArray.getColor(R.styleable.MyView_c, 0x00000000);        int d = typedArray.getDimensionPixelSize(R.styleable.MyView_d, 0);        int e = typedArray.getInt(R.styleable.MyView_e, 0);        int f = typedArray.getInt(R.styleable.MyView_f, 0);        float g = typedArray.getFloat(R.styleable.MyView_g, 0.1f);        String h = typedArray.getString(R.styleable.MyView_h);        int i = typedArray.getResourceId(R.styleable.MyView_i, -1);        String j = typedArray.getString(R.styleable.MyView_j);        typedArray.recycle();    }}

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