how to handle different screen sizes

[shawn peter]

here is my xml file which contain two buttons.I need these two button to take whole space vertically when the app is running.This is working fine in my phone.But if i use large screen phones this is not working fine.how to reslve this ?

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:background="@drawable/google_android"
    tools:context=".Commom" >

    
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="top|center_horizontal" >

        <Button
            android:id="@+id/D"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="50"
            android:text="@string/Dialog" >
        </Button>

        <Button
            android:id="@+id/M"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="50"
            android:text="@string/Mobitel" >
        </Button>
    </LinearLayout>

</RelativeLayout>

[Steve Luke]

The buttons' height are set to wrap_content. What does that do? Why is that wrong? What should t be instead?

[shawn peter]

tnx steve.I change it to match_parent.anyway buttons doesn't fill full space horizontally also.please advice.

[ab singh]

Use weight and height as match parent. Hope it was helpful,

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin" >
     
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="top|center_horizontal"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/D"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="dialog" >
        </Button>

        <Button
            android:id="@+id/M"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="Mobitel" >
        </Button>
    </LinearLayout>
 
</RelativeLayout>