原来说错了：右边两个按钮并排靠右，左边一个按钮填满其他空间，有代码和图片

Question

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" >   <Button
        android:id="@+id/buttonLeft"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="buttonLeft" />
   
    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toLeftOf="@+id/button3"
        android:text="Button2" />    <Button
        android:id="@+id/button3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:text="Button3" /></RelativeLayout>我要的是左边的按钮只是占用当前行的剩余空间
要怎么写呢？簇

Answer 1

<?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="wrap_content"
    android:orientation="horizontal" >    <Button
        android:id="@+id/buttonLeft"
        android:layout_width="0dp"
        android:layout_weight="1"
        android:layout_height="wrap_content"
        android:text="buttonLeft" />    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button2" />    <Button
        android:id="@+id/button3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button3" /></LinearLayout>

Answer 2

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >    <LinearLayout
        android:id="@+id/right"
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:layout_alignParentRight="true"
        android:layout_marginLeft="1dp"
        android:orientation="horizontal" >
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="btn1" />        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="btn2" />
    </LinearLayout>   <Button 
       android:id="@+id/text"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_alignParentLeft="true"
       android:layout_toLeftOf="@+id/right"
       android:text="godbtn"
       />
</RelativeLayout>

Answer 3

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" >
 
   <Button
        android:id="@+id/buttonLeft"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        <!--只需要加这一行就可以实现-->
        android:layout_toLeftOf="@+id/button2"
        android:text="buttonLeft" />
    
    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toLeftOf="@+id/button3"
        android:text="Button2" />
 
    <Button
        android:id="@+id/button3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:text="Button3" />
 
</RelativeLayout>