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>