RelativeLayout 居中无效

Question

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal" >    <TableLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
android:layout_centerVertical="true"
        android:layout_centerHorizontal="true"
        android:layout_centerInParent="true"
>        <TableRow
            android:id="@+id/tableRow1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" >                <TextView
                    android:id="@+id/logintab_ipaddress_label"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/login_tab_iplabel"
                    android:width="100dp" />                <EditText
                    android:id="@+id/logintab_ipaddress_edit"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:ems="10"
                    android:inputType="text" >
                </EditText>
            </LinearLayout>
        </TableRow>        <TableRow
            android:id="@+id/tableRow2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" >                <TextView
                    android:id="@+id/logintab_portnumber_label"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/login_tab_portlabel"
                    android:width="100dp" />                <EditText
                    android:id="@+id/logintab_portnumber_edit"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:ems="10"
                    android:inputType="text" >
                </EditText>
            </LinearLayout>
        </TableRow>        <TableRow
            android:id="@+id/tableRow3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >            <LinearLayout
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" >                <Button
                    android:id="@+id/login_tab_submitbutton"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="40dp"
                    android:text="@string/login_tab_submitbutton_str"
                    android:width="100dp" />                <Button
                    android:id="@+id/login_tab_resetbutton"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="50dp"
                    android:text="@string/login_tab_resetbutton_str"
                    android:width="100dp" />
            </LinearLayout>
        </TableRow>
    </TableLayout></RelativeLayout>Androidrelativelayout布局

Answer 1

哪里无效了，没说清楚啊。现在RelativeLayout下的TableLayout不是居中了么？