自定义带箭头的Button

效果图：

样式如下：

rounded_corner_shape.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <stroke android:width="2dp" android:color="@color/lightgray" />
    <corners android:radius="10dp" />
    <solid android:color="@android:color/white"/>
</shape>

rounded_corner_btn_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true" >
        <shape>
            <stroke android:width="2dp" android:color="@color/orange" />
            <corners android:radius="10dp" />
            <solid android:color="@color/orange"/>
        </shape>
    </item>
    <item android:state_focused="true" android:drawable="@drawable/rounded_corner_shape" />
    <item android:drawable="@drawable/rounded_corner_shape" />
</selector>

style.xml

<resources>
    <style name="RoundedCornerView">
        <item name="android:background">@drawable/rounded_corner_shape</item>
        <item name="android:cacheColorHint">@color/transparent</item>
        <item name="android:layout_marginTop">5dp</item>
        <item name="android:layout_marginLeft">10dp</item>
        <item name="android:layout_marginRight">10dp</item>
        <item name="android:layout_marginBottom">5dp</item>
        <item name="android:paddingLeft">12dp</item>
        <item name="android:paddingRight">12dp</item>
        <item name="android:layout_width">match_parent</item>
        <item name="android:layout_height">wrap_content</item>
    </style>
    <style name="RoundedCornerBtn" parent="RoundedCornerView">
        <item name="android:background">@drawable/rounded_corner_btn_selector</item>
        <item name="android:gravity">left|center_vertical</item>
        <item name="android:textColor">@color/gray</item>
    </style>
    <style name="RoundedCornerBtnWithRightArrow" parent="RoundedCornerBtn">
        <item name="android:drawableRight">@drawable/right_arrow</item>
    </style>    
</resources>

在layout中为按钮设置样式

<Button
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="带箭头的按钮"
    android:textSize="20sp"
    style="@style/RoundedCornerBtnWithRightArrow"/>

参考文章：http://fokman.iteye.com/blog/1616831