android - Fit to screen all widgets -

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this screen shots. want buttons display in fit screen devices.

i want remove space after button6 , fit buttons in screen.

image

<linearlayout     android:layout_width="fill_parent"     android:layout_height="fill_parent"     android:layout_weight="1"     android:orientation="vertical" >      <button         android:id="@+id/button1"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_weight="1"         android:text="button" />      <button         android:id="@+id/button2"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_weight="1"         android:text="button" />      <button         android:id="@+id/button3"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_weight="1"         android:text="button" />      <button         android:id="@+id/button4"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_weight="1"         android:text="button" /> </linearlayout>

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