像考试时前面的10几道单选题的实现(布局文件)

<?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/white" android:orientation="vertical"> <include layout="@layout/include_appbarlayout_toolbar" /> <ScrollView android:layout_width="match_parent" android:layout_height="0dp" android:layout_margin="8dp" android:layout_weight="1"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <com.soict.multiphoto.NoScrollListView android:id="@+id/topic_quest_answer" android:layout_width="match_parent" android:layout_height="match_parent" android:clipToPadding="false" android:divider="@color/gary" android:dividerHeight="0.5dp" android:listSelector="@android:color/transparent" /> </LinearLayout> </ScrollView> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginBottom="15dp" android:gravity="center" android:orientation="vertical"> <TextView android:id="@+id/topic_sent_comment" android:layout_width="120dp" android:layout_height="32dp" android:background="@drawable/login_btn_style" android:gravity="center" android:text="提交答案" android:textColor="@color/white" /> </LinearLayout>

</LinearLayout>

<?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:orientation="vertical"> <TextView android:id="@+id/topic_item_question" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="今天" android:textSize="20sp" /> <RadioGroup android:id="@+id/topic_item_option" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <RadioButton android:id="@+id/topic_item_option1" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <RadioButton android:id="@+id/topic_item_option2" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <RadioButton android:id="@+id/topic_item_option3" android:visibility="gone" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <RadioButton android:id="@+id/topic_item_option4" android:visibility="gone" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </RadioGroup> </LinearLayout>如何让4个radiobutton按照两行两列，可以使用margin属性来调整，获取手机的宽度来实现平分宽度，参考链接：http://blog.csdn.net/nihaoqiulinhe/article/details/53943249