使用selector和shape实现圆角选项

最近在做一个项目，里边的设置页面要求圆角选项，类似QQ浏览器中的设置页面。废话不多说，上图看看大致效果：



 做出这种效果，需要在drawable中加入四个selector（单个圆角选项、圆角上、圆角中部、圆角下）和一个shape（多个圆角选项外框）。

注意：

1、如果没有在代码中做setOnClickListener处理，想看到效果，需要加上android:clickable="true"属性，否则点击没有效果。

2、圆角选项外框的LinearLayout需要加上android:padding="1dp"属性，否则框内的选项会遮盖圆角框，就看不到外部边框了。

3、在圆角上、圆角下的selector中，获得焦点时的圆角角度比默认时偏小些，不然会有点空白情况发生。

下面是代码时间：

1、单个圆角选项：option_setting_bg_full.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- 点击时 -->
<item android:state_pressed="true">
<shape>
<solid android:color="@color/mine_option_bg_pre" />

<corners android:radius="5dp" />

<stroke android:width="1dp" android:color="#afafaf" />
</shape>
</item>
<!-- 获得焦点时 -->
<item android:state_focused="true">
<shape>
<solid android:color="@color/mine_option_bg_pre" />

<corners android:radius="5dp" />

<stroke android:width="1dp" android:color="#afafaf" />
</shape>
</item>
<!-- 默认状态 -->
<item>
<shape>
<solid android:color="@color/mine_option_bg_nor" />

<corners android:radius="5dp" />

<stroke android:width="1dp" android:color="#afafaf" />
</shape>
</item>

</selector>

2、多个圆角选项外框：option_setting_bg_all.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >

<solid android:color="@color/mine_option_bg_nor" />

<corners
android:topLeftRadius="5dp"
android:topRightRadius="5dp"
android:bottomLeftRadius="5dp"
android:bottomRightRadius="5dp" />

<stroke
android:width="1dp"
android:color="#afafaf" />

</shape>

3、圆角上：option_setting_bg_top.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<!-- 点击时 -->
<item android:state_pressed="true">
<shape>
<solid android:color="@color/mine_option_bg_pre" />

<corners
android:topLeftRadius="4dp"
android:topRightRadius="4dp"
android:bottomLeftRadius="0dp"
android:bottomRightRadius="0dp" />

<stroke
android:width="0dp"
android:color="#afafaf" />
</shape>
</item>
<!-- 获得焦点时 -->
<item android:state_focused="true">
<shape>
<solid android:color="@color/mine_option_bg_pre" />

<corners
android:topLeftRadius="4dp"
android:topRightRadius="4dp"
android:bottomLeftRadius="0dp"
android:bottomRightRadius="0dp" />

<stroke
android:width="0dp"
android:color="#afafaf" />
</shape>
</item>
<!-- 默认状态 -->
<item>
<shape>
<solid android:color="@color/mine_option_bg_nor" />

<corners
android:topLeftRadius="5dp"
android:topRightRadius="5dp"
android:bottomLeftRadius="0dp"
android:bottomRightRadius="0dp" />

<stroke android:width="0dp" android:color="#afafaf" />
</shape>
</item>
</selector>

4、圆角中部：option_setting_bg_center.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<!-- 点击时 -->
<item android:state_pressed="true">
<shape>
<solid android:color="@color/mine_option_bg_pre" />

<corners android:radius="0dp"/>

<stroke android:width="0dp" android:color="#afafaf" />
</shape>
</item>
<!-- 获得焦点时 -->
<item android:state_focused="true">
<shape>
<solid android:color="@color/mine_option_bg_pre" />

<corners android:radius="0dp"/>

<stroke android:width="0dp" android:color="#afafaf" />
</shape>
</item>
<!-- 默认状态 -->
<item>
<shape>
<solid android:color="@color/mine_option_bg_nor" />

<corners android:radius="0dp"/>

<stroke android:width="0dp" android:color="#afafaf" />
</shape>
</item>
</selector>

5、圆角下：option_setting_bg_bottom.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<!-- 点击时 -->
<item android:state_pressed="true">
<shape>
<solid android:color="@color/mine_option_bg_pre" />

<corners android:bottomLeftRadius="5dp" android:bottomRightRadius="5dp"/>

<stroke android:width="0dp" android:color="#afafaf" />
</shape>
</item>
<!-- 获得焦点时 -->
<item android:state_focused="true">
<shape>
<solid android:color="@color/mine_option_bg_pre" />

<corners android:bottomLeftRadius="5dp" android:bottomRightRadius="5dp"/>

<stroke android:width="0dp" android:color="#afafaf" />
</shape>
</item>
<!-- 默认状态 -->
<item>
<shape>
<solid android:color="@color/mine_option_bg_nor" />

<corners android:bottomLeftRadius="5dp" android:bottomRightRadius="5dp"/>

<stroke android:width="0dp" android:color="#afafaf" />
</shape>
</item>
</selector>

在layout中的应用：layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/app_base_bg"
android:orientation="vertical" >

<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/space_10"
android:layout_marginRight="@dimen/space_10"
android:layout_marginTop="@dimen/space_20"
android:background="@drawable/option_setting_bg_full"
android:clickable="true" >

<ImageView
android:id="@+id/set_option_head_img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:layout_marginBottom="@dimen/space_20"
android:layout_marginEnd="@dimen/space_10"
android:layout_marginLeft="@dimen/space_20"
android:layout_marginRight="@dimen/space_10"
android:layout_marginStart="@dimen/space_20"
android:layout_marginTop="@dimen/space_20"
android:contentDescription="@string/iv_cont_des_string"
android:src="@drawable/setting_head_def" />

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginBottom="@dimen/space_20"
android:layout_marginTop="@dimen/space_20"
android:layout_toEndOf="@+id/set_option_head_img"
android:layout_toRightOf="@+id/set_option_head_img"
android:orientation="vertical" >

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="单个圆角选项"
android:textColor="@color/black"
android:textSize="@dimen/text_size_15" />

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="这里只有一个圆角按钮"
android:textColor="#666666"
android:textSize="@dimen/text_size_13" />
</LinearLayout>

<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:contentDescription="@string/iv_cont_des_string"
android:src="@drawable/option_more" />
</RelativeLayout>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/space_10"
android:layout_marginRight="@dimen/space_10"
android:layout_marginTop="@dimen/space_20"
android:background="@drawable/option_setting_bg_all"
android:clickable="true"
android:orientation="vertical"
android:padding="1dp" >

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/option_setting_bg_top"
android:baselineAligned="false"
android:clickable="true"
android:orientation="horizontal" >

<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical" >

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="start|center_vertical"
android:padding="@dimen/space_10"
android:text="按钮一"
android:textColor="@color/black"
android:textSize="20sp" />
</LinearLayout>

<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical" >

<ImageView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="end|center_vertical"
android:contentDescription="@string/iv_cont_des_string"
android:src="@drawable/option_more" />
</LinearLayout>
</LinearLayout>

<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#cfcfcf" />

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/option_setting_bg_center"
android:baselineAligned="false"
android:clickable="true"
android:orientation="horizontal" >

<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical" >

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="start|center_vertical"
android:padding="@dimen/space_10"
android:text="按钮二"
android:textColor="@color/black"
android:textSize="20sp" />
</LinearLayout>

<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical" >

<ImageView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="end|center_vertical"
android:contentDescription="@string/iv_cont_des_string"
android:src="@drawable/option_more" />
</LinearLayout>
</LinearLayout>

<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#cfcfcf" />

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/option_setting_bg_bottom"
android:baselineAligned="false"
android:clickable="true"
android:orientation="horizontal" >

<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical" >

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="start|center_vertical"
android:padding="@dimen/space_10"
android:text="按钮三"
android:textColor="@color/black"
android:textSize="20sp" />
</LinearLayout>

<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical" >

<ImageView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="end|center_vertical"
android:contentDescription="@string/iv_cont_des_string"
android:src="@drawable/option_more" />
</LinearLayout>
</LinearLayout>
</LinearLayout>

</LinearLayout>