Question

I need to equalize spaces between four buttons. Is there any way this could be done? The problem is that first and last buttons needs to be near the edge, and the remaining space should be equally divided for remaining two buttons and three spaces.

layout/main.xml:

<LinearLayout
    android:id="@+id/setupButtons"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal" >

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

        <Button
            android:id="@+id/setupButtonA1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/button_arrow_up"
            android:enabled="true" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" 
        android:layout_weight="1">

        <Button
            android:id="@+id/setupButtonA2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/button_arrow_down"
            android:layout_weight="0.5"
            android:enabled="true" />

        <Button
            android:id="@+id/setupButtonB1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/button_arrow_up"
            android:layout_weight="0.5"
            android:enabled="false" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

        <Button
            android:id="@+id/setupButtonB2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/button_arrow_down"
            android:enabled="false" />
    </LinearLayout>
</LinearLayout>

---

Thank you for all of your answers, the correct solution was:

<LinearLayout
    android:id="@+id/setupButtons"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal" >

    <Button
        android:id="@+id/setupButtonA1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/button_arrow_up"
        android:enabled="true" />

    <View
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1" />

    <Button
        android:id="@+id/setupButtonA2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/button_arrow_down"
        android:enabled="true" />

    <View
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1" />

    <Button
        android:id="@+id/setupButtonB1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/button_arrow_up"
        android:enabled="false" />

    <View
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1" />

    <Button
        android:id="@+id/setupButtonB2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/button_arrow_down"
        android:enabled="false" />
</LinearLayout>

Answer 1

you can use below code in which i have inserted blank views with weight 1 set in all the controls in linearlayout.

 <LinearLayout
        android:id="@+id/linearLayout1"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="horizontal" >
<Button
            android:id="@+id/button1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Button" android:layout_weight="1"/>
 <View
            android:id="@+id/v2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"/>
        <Button
            android:id="@+id/button1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Button" android:layout_weight="1"/>
 <View
            android:id="@+id/v2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"/>
        <Button
            android:id="@+id/button2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Button" android:layout_weight="1"/>
 <View
            android:id="@+id/v2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"/>
            <Button
            android:id="@+id/button1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Button" android:layout_weight="1"/>
    </LinearLayout>