<RelativeLayout? ????????android:id="@+id/layout1" ????????android:layout_width="wrap_content" ????????android:layout_height="wrap_content"> ????<RadioGroup ????????android:id="@+id/radioGroup1" ????????android:layout_width="wrap_content" ????????android:layout_height="wrap_content"? ????????android:orientation="horizontal" ????????android:layout_alignParentBottom="true" ????????> ????????<RadioButton ????????????android:id="@+id/radio0" ????????????android:layout_width="wrap_content" ????????????android:layout_height="wrap_content" ????????????android:checked="true" ????????????android:text="@string/content1"? ????????????android:layout_weight="1" ???????????android:drawableTop="@drawable/ic_launcher" ??????????android:gravity="center_horizontal" ????????????/> ????????<RadioButton ????????????android:id="@+id/radio1" ????????????android:layout_width="wrap_content" ????????????android:layout_height="wrap_content" ????????????android:text="@string/content2"? ????????????android:layout_weight="1" ????????????android:drawableTop="@drawable/ic_launcher" ????????????android:gravity="center_horizontal"/> ????????<RadioButton ????????????android:id="@+id/radio2" ????????????android:layout_width="wrap_content" ????????????android:layout_height="wrap_content" ????????????android:text="@string/content3"? ????????????android:layout_weight="1" ????????????android:gravity="center_horizontal" ????????????android:drawableTop="@drawable/ic_launcher" ????????????/> ????????<RadioButton ????????????android:id="@+id/radio3" ????????????android:layout_width="wrap_content" ????????????android:layout_height="wrap_content" ????????????android:text="@string/content4"? ????????????android:layout_weight="1" ????????????android:gravity="center_horizontal" ????????????android:drawableTop="@drawable/ic_launcher" ???????????/> ????</RadioGroup> </RelativeLayout這樣底部能平均分部，但是，只要給每一個(gè)radiobutton加上 ? button=“@null”的屬性后就會變成我想要它們能平均分部在底部。。！求大神指教！