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how to center crop a background image of linear layout?

Hi i had to make a layout with card with recyclerview so for that i set an image as a background to linear layout but now i'm unable to center crop that image
My problem is that i cannot use imageview because using that the height of card increases as well and i don't want that so please if someone can assit me..
my xml
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/primary_card"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="19dp"
android:layout_marginRight="19dp"
android:layout_marginTop="15dp"
app:cardCornerRadius="115dp">
<ImageView
android:id="#+id/background_image_layout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:visibility="gone" />
<LinearLayout
android:id="#+id/background_image"
android:layout_width="match_parent"
android:layout_height="210dp"
android:background="#drawable/club1"
android:orientation="vertical"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/profile_image"
android:layout_width="56dp"
android:layout_height="56dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="20dp"
android:src="#drawable/ellipse" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="5dp">
<com.ct.listrtrial.Custom.CustomTextViewMedium
android:id="#+id/first_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="18dp"
android:padding="5dp"
android:text="John Doe"
android:textColor="#color/White"
android:textSize="15sp" />
<com.ct.listrtrial.Custom.CustomTextViewMedium
android:id="#+id/second_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="18dp"
android:padding="5dp"
android:text="checked in to"
android:textColor="#color/White"
android:textSize="10sp" />
<com.ct.listrtrial.Custom.CustomTextViewMedium
android:id="#+id/third_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="18dp"
android:padding="5dp"
android:text="W south"
android:textColor="#color/White"
android:textSize="15sp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:orientation="horizontal">
<com.ct.listrtrial.Custom.CustomTextViewMedium
android:id="#+id/fourth_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="9dp"
android:text="beach mumbai"
android:textColor="#color/White"
android:textSize="15sp" />
<com.ct.listrtrial.Custom.CustomTextViewMedium
android:id="#+id/fifth_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/second_text"
android:layout_toRightOf="#+id/fourth_text"
android:text="30 mins ago."
android:textColor="#color/White"
android:textSize="10sp" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="85dp">
<com.ct.listrtrial.Custom.CustomTextViewMedium
android:id="#+id/sixth_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerInParent="true"
android:padding="10dp"
android:text="reply to abc............"
android:textColor="#color/White" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerInParent="true">
<ImageView
android:id="#+id/favourite_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:adjustViewBounds="true"
android:scaleType="fitXY"
android:src="#drawable/ic_favorite_border_black_24dp" />
<com.ct.listrtrial.Custom.CustomTextViewMedium
android:id="#+id/seventh_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="15dp"
android:text="40 likes"
android:textColor="#color/White" />
</LinearLayout>
</RelativeLayout>
</LinearLayout>
</android.support.v7.widget.CardView>

You can't center crop a background image of linear layout,
But you can achieve the same using these changes:
Replace you LinearLayout with RelativeLayout
Place a ImageView as a first child inside relative layout and use property for center crop.
<RelativeLayout
android:id="#+id/background_image"
android:layout_width="match_parent"
android:layout_height="210dp"
android:orientation="vertical">
<ImageView
android:scaleType="centerCrop"
android:src="#drawable/club1"
android:layout_width="match_parent"
android:layout_height="match_parent" />
.....
......
</RelativeLayout>

If you Want to control The Image View Scale
you need to put it in ImageView As Src Not Background
You can use Frame layout To Achieve it
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/primary_card"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="19dp"
android:layout_marginRight="19dp"
android:layout_marginTop="15dp"
app:cardCornerRadius="115dp">
<ImageView
android:id="#+id/background_image_layout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:visibility="gone" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="210dp">
<ImageView
android:layout_width="match_parent"
android:src="#mipmap/ic_launcher"
android:layout_height="match_parent" />
<LinearLayout
android:id="#+id/background_image"
android:layout_width="match_parent"
android:layout_height="210dp"
android:orientation="vertical"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="#+id/profile_image"
android:layout_width="56dp"
android:layout_height="56dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="20dp"
android:src="#drawable/playstore_icon" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="5dp">
<TextView
android:id="#+id/first_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="18dp"
android:padding="5dp"
android:text="John Doe"
android:textSize="15sp" />
<TextView
android:id="#+id/second_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="18dp"
android:padding="5dp"
android:text="checked in to"
android:textSize="10sp" />
<TextView
android:id="#+id/third_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="18dp"
android:padding="5dp"
android:text="W south"
android:textSize="15sp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:orientation="horizontal">
<TextView
android:id="#+id/fourth_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="9dp"
android:text="beach mumbai"
android:textSize="15sp" />
<TextView
android:id="#+id/fifth_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/second_text"
android:layout_toRightOf="#+id/fourth_text"
android:text="30 mins ago."
android:textSize="10sp" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="85dp">
<TextView
android:id="#+id/sixth_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerInParent="true"
android:padding="10dp"
android:text="reply to abc............"
android:textColor="#color/white" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerInParent="true">
<ImageView
android:id="#+id/favourite_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:adjustViewBounds="true"
android:scaleType="fitXY"
android:src="#drawable/ic_close" />
<TextView
android:id="#+id/seventh_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="15dp"
android:text="40 likes"
android:textColor="#color/white" />
</LinearLayout>
</RelativeLayout>
</LinearLayout>
</FrameLayout>
</android.support.v7.widget.CardView>

CenterCrop logic is baked inside ImageView. The correct solution is to extract it into a Drawable which wraps another Drawable and centerCrops it.

If you use CoordinatorLayout, then just to put your ImageView with centerCrop parameter to top.
<CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:scaleType="centerCrop"
android:background="#drawable/background_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:elevation="0dp">
<include layout="#layout/header_main" />
<TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabIndicatorColor="#android:color/white"
android:background="#drawable/white_border_background"
app:tabIndicatorHeight="3dp"/>
</AppBarLayout>
<ViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</CoordinatorLayout>

How do you arrange ImageViews and TextViews dynamically to Linear Layout in Android?

I've got a fragment from which users select features their rooms have (fig.1 below) and these are stored in the back-end as boolean values i.e. true if set and false otherwise.
The XML for the fragment:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent"
<!-- none core xml formatting and views -->
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="20dp"
android:weightSum="1"
android:layout_gravity="center_horizontal"
android:background="#drawable/border_bottom_top"
android:id="#+id/details_amenities_layout">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:baselineAligned="false">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingTop="5dp" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="38dp"
android:id="#+id/add_room_bic_imageview"
android:src="#mipmap/ic_bic"
android:padding="5dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/add_room_bic_amenity"
android:id="#+id/add_room_bic_label"
android:textSize="16sp"
android:gravity="center"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_below="#+id/add_room_bic_imageview" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingTop="5dp" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="38dp"
android:id="#+id/add_room_entrance_imageview"
android:src="#mipmap/ic_entrance"
android:padding="5dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/add_room_entrance_amenity"
android:id="#+id/add_room_entrance_label"
android:textSize="16sp"
android:gravity="center"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingTop="5dp" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="38dp"
android:id="#+id/add_room_toilet_imageview"
android:src="#mipmap/ic_toilet"
android:padding="5dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/add_room_toilet_amenity"
android:id="#+id/add_room_toilet_label"
android:textSize="16sp"
android:gravity="center"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingTop="5dp" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="38dp"
android:id="#+id/add_room_kitchen_imageview"
android:src="#mipmap/ic_kitchen"
android:padding="5dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/add_room_kitchen_amenity"
android:id="#+id/add_room_kitchen_label"
android:textSize="16sp"
android:gravity="center"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:baselineAligned="false"
android:layout_marginTop="8dp" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingTop="5dp" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="38dp"
android:id="#+id/add_room_parking_imageview"
android:src="#mipmap/ic_parking"
android:padding="5dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/add_room_parking_amenity"
android:id="#+id/add_room_parking_label"
android:textSize="16sp"
android:gravity="center"
android:layout_centerHorizontal="true"
android:layout_below="#+id/add_room_parking_imageview" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingTop="5dp" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="38dp"
android:id="#+id/add_room_wifi_imageview"
android:src="#mipmap/ic_wi_fi"
android:padding="5dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/add_room_wifi_amenity"
android:id="#+id/add_room_wifi_label"
android:textSize="16sp"
android:gravity="center"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingTop="5dp" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="38dp"
android:id="#+id/add_room_secure_imageview"
android:src="#mipmap/ic_secure"
android:padding="5dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/add_room_secure_amenity"
android:id="#+id/add_room_secure_label"
android:textSize="16sp"
android:gravity="center"
android:layout_below="#+id/add_room_secure_imageview"
android:layout_centerHorizontal="true" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingTop="5dp" >
<ImageView
android:id="#+id/add_room_furnished_imageview"
android:src="#mipmap/ic_furnished"
style="#style/amenities_image_style"
android:layout_width="wrap_content"
android:layout_height="38dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/add_room_furnished_amenity"
android:id="#+id/add_room_furnished_label"
android:textSize="16sp"
android:gravity="center"
android:layout_below="#+id/add_room_furnished_imageview"
android:layout_centerHorizontal="true" />
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:baselineAligned="false"
android:layout_marginTop="5dp" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingTop="5dp" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="38dp"
android:id="#+id/add_room_borehole_imageview"
android:src="#mipmap/ic_borehole"
android:padding="5dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/add_room_borehole_amenity"
android:id="#+id/add_room_borehole_label"
android:textSize="16sp"
android:gravity="center"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingTop="5dp" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="38dp"
android:id="#+id/add_room_prezesa_imageview"
android:src="#mipmap/ic_zesa"
android:padding="5dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/add_room_zesa_amenity"
android:id="#+id/add_room_prezesa_label"
android:textSize="16sp"
android:gravity="center"
android:layout_alignParentBottom="true"
android:layout_alignEnd="#+id/add_room_prezesa_imageview"
android:layout_centerHorizontal="true" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingTop="5dp" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="38dp"
android:id="#+id/add_room_wardrobe_imageview"
android:src="#mipmap/ic_wardrobe"
android:padding="5dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/add_room_wardrobe_amenity"
android:id="#+id/add_room_wardrobe_label"
android:textSize="16sp"
android:gravity="center"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingTop="5dp" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="38dp"
android:id="#+id/add_room_prewater_imageview"
android:src="#mipmap/ic_prewater"
android:padding="5dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/add_room_water_amenity"
android:id="#+id/add_room_prewater_label"
android:textSize="16sp"
android:gravity="center"
android:layout_below="#+id/add_room_prewater_imageview"
android:layout_alignRight="#+id/add_room_prewater_imageview"
android:layout_alignEnd="#+id/add_room_prewater_imageview"
android:layout_centerHorizontal="true" />
</RelativeLayout>
</LinearLayout>
</LinearLayout>
<!-- none core views -->
<android.support.design.widget.FloatingActionButton android:id="#+id/add_room_step3_fab"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_gravity="end"
android:src="#mipmap/ic_done_white_48dp"
android:layout_marginBottom="#dimen/fab_margin" />
</LinearLayout>
</ScrollView>
Naturally the selected features differ thus the number of views is not constant obtained from the back-end. I am able to retrieve the set features and instantiate the correct views in Java i.e. if there are 5 set features comprising BIC, Wifi, Kitchen etc, I am able to determine these and set the necessary Image resources and Text.
Question now is how do I arrange the views obtained to replicate the layout above using Java code as I can only know the features set after querying the back-end. Desired end result has to look like the image below. Hope it makes sense.

layout looks different on real device than how shows in graphical layout of eclipse

I am working on the UI of my app.
The graphical layout I get in Eclipse while coding looks perfect and as that should be.
But when I launch the app either on an emulator or on a device, it gets distorted.
Every UI component, like Buttons, EditTexts and TextViews.
All the margins and paddings just get lost.
<LinearLayout
android:id="#+id/ll_grand_parent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:gravity="fill_horizontal"
android:orientation="vertical"
android:weightSum="10" >
<LinearLayout
android:id="#+id/ll_button_signin_create_account"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="fill"
android:layout_marginLeft="7dp"
android:layout_marginTop="29dp"
android:layout_weight="2"
android:orientation="horizontal"
android:visibility="visible"
>
<Button
android:id="#+id/button_common_singin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/transparent_button"
android:gravity="center"
android:text="Sign In"
android:textColor="#FFFFFF"
android:textSize="13sp" />
<Button
android:id="#+id/button_common_create_account"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/colored_button"
android:gravity="center"
android:text="Create Account"
android:textColor="#FFFFFF"
android:textSize="13sp" />
</LinearLayout>
<LinearLayout
android:id="#+id/signin_main"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="5.24"
android:orientation="vertical"
android:visibility="gone" >
<LinearLayout
android:id="#+id/ll_parent_signin_email_password"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="20sp"
android:layout_weight=".8"
android:background="#drawable/border"
android:orientation="vertical"
android:visibility="visible" >
<LinearLayout
android:id="#+id/ll_signin_email"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="2"
android:orientation="horizontal"
android:visibility="visible"
android:weightSum="10" >
<TextView
android:id="#+id/textview_space_signin_email"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="2" />
<TextView
android:id="#+id/textview_signin_email"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="3"
android:gravity="center"
android:text="Email"
android:textColor="#FFFFFF" />
<EditText
android:id="#+id/edittext_signin_email"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_weight="3"
android:background="#android:color/transparent"
android:gravity="center"
android:hint="john#hotmail.com"
android:textColorHint="#FFFFFF"
android:textSize="13dp" />
</LinearLayout>
<View
android:id="#+id/view_line_signin_email_password"
android:layout_width="fill_parent"
android:layout_height="1dip"
android:background="#FFFFFF" />
<LinearLayout
android:id="#+id/ll_signin_password"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="2"
android:orientation="horizontal"
android:visibility="visible"
android:weightSum="10" >
<TextView
android:id="#+id/textview_space_signin_password"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1" />
<TextView
android:id="#+id/textview_signin_password"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="3"
android:gravity="center"
android:text="Password"
android:textColor="#FFFFFF" />
<EditText
android:id="#+id/edittext_signin_password"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="4.49"
android:background="#android:color/transparent"
android:gravity="center"
android:hint="*********"
android:password="true"
android:textColorHint="#FFFFFF" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="#+id/ll_signin_logme_parent_button"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_marginTop="20dp"
android:layout_weight="1"
android:orientation="horizontal"
android:visibility="visible"
android:weightSum="10" >
<TextView
android:id="#+id/textview_space_signin_loginme_button_lhs"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1" />
<Button
android:id="#+id/button_signin_loginme"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="7"
android:background="#219AC7"
android:gravity="center"
android:text="Login Me"
android:textColor="#FFFFFF" />
<ImageView
android:id="#+id/textview_space_signin_logmebutton_rhs"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight=".7" />
</LinearLayout>
<RelativeLayout
android:id="#+id/relative_layout_signin_parent_forgetpassword"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_marginLeft="14dp"
android:layout_marginTop="9dp"
android:visibility="visible" >
<TextView
android:id="#+id/textview_signin_forget_password"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="forget password"
android:textColor="#000000" />
</RelativeLayout>
<LinearLayout
android:id="#+id/ll_signin_orline_draw_parent"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="1"
android:orientation="horizontal"
android:visibility="visible"
android:weightSum="10" >
<View
android:layout_width="fill_parent"
android:layout_height="1dip"
android:layout_gravity="center"
android:layout_weight="4"
android:background="#000000"
android:padding="20dp" />
<ImageView
android:id="#+id/imageview_signin_or_drawline"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="2"
android:src="#drawable/or" />
<View
android:layout_width="fill_parent"
android:layout_height="1dip"
android:layout_gravity="center"
android:layout_weight="4"
android:background="#000000"
android:padding="20dp" />
</LinearLayout>
<LinearLayout
android:id="#+id/ll_signin_parent_loginwith_facebook"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_marginTop="13dp"
android:layout_weight="1"
android:orientation="horizontal"
android:visibility="visible"
android:weightSum="10" >
<TextView
android:id="#+id/textview_space_signin_facebook_lhs"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
<ImageView
android:id="#+id/imageview_signin_facebook_logo"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="2"
android:background="#drawable/fb" />
<Button
android:id="#+id/button_singin_facebook"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="6"
android:background="#3B5998"
android:text="login with facebook"
android:textColor="#FFFFFF" />
<TextView
android:id="#+id/textview_space_sigin_facebook_rhs"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="#+id/signup_main"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="6"
android:orientation="vertical"
android:visibility="visible" >
<LinearLayout
android:id="#+id/ll_signup_parentlayout_name"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="20sp"
android:layout_weight=".8"
android:background="#drawable/border"
android:orientation="vertical"
android:visibility="visible" >
<LinearLayout
android:id="#+id/ll_singnup_firstname"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="2"
android:orientation="horizontal"
android:visibility="visible"
android:weightSum="10" >
<TextView
android:id="#+id/textview_signup_firstname"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="3"
android:gravity="center"
android:text="First Name"
android:textColor="#FFFFFF" />
<EditText
android:id="#+id/edittext_signup_firstname"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_weight="3"
android:background="#android:color/transparent"
android:gravity="center"
android:hint="John"
android:singleLine="true"
android:textColor="#FFFFFF"
android:textColorHint="#FFFFFF"
/>
<EditText
android:id="#+id/edittext_singup_email"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_weight="3"
android:background="#android:color/transparent"
android:gravity="center"
android:hint="john#xyz.com"
android:singleLine="true"
android:textColor="#FFFFFF"
android:textColorHint="#FFFFFF"
android:textSize="13dp"
android:visibility="gone" >
</EditText>
</LinearLayout>
<View
android:id="#+id/view_signup_line_draw_name_first_last_name"
android:layout_width="fill_parent"
android:layout_height="1dip"
android:background="#FFFFFF" />
<LinearLayout
android:id="#+id/ll_signup_lastname"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="2"
android:orientation="horizontal"
android:visibility="visible"
android:weightSum="10" >
<TextView
android:id="#+id/textview_signup_lastname"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="3"
android:gravity="center"
android:text="Last Name"
android:textColor="#FFFFFF" />
<EditText
android:id="#+id/edittext_signup_lastname"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="4.47"
android:background="#android:color/transparent"
android:gravity="center"
android:hint="Smith"
android:password="false"
android:singleLine="true"
android:textColor="#FFFFFF"
android:textColorHint="#FFFFFF" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="#+id/ll_singnup_email_parent"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="20sp"
android:layout_weight=".8"
android:background="#drawable/border"
android:orientation="vertical"
android:visibility="visible" >
<LinearLayout
android:id="#+id/ll_signup_email_address"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="2"
android:orientation="horizontal"
android:weightSum="10" >
<TextView
android:id="#+id/textview_signup_email"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="3"
android:gravity="center"
android:text="Email Address"
android:textColor="#FFFFFF" />
<EditText
android:id="#+id/edittext_signup_enteremail"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="4.49"
android:background="#android:color/transparent"
android:gravity="center"
android:hint="john#xyz.com"
android:password="false"
android:singleLine="true"
android:textColor="#FFFFFF"
android:textColorHint="#FFFFFF" />
</LinearLayout>
<View
android:id="#+id/view_signup_draw_line_email"
android:layout_width="fill_parent"
android:layout_height="1dip"
android:background="#FFFFFF" />
<LinearLayout
android:id="#+id/ll_signup_reenter_email"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="2"
android:orientation="horizontal"
android:visibility="visible"
android:weightSum="10" >
<TextView
android:id="#+id/textview_signup_reenteremail"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="3"
android:gravity="center"
android:singleLine="true"
android:text="Re Enter Email Address"
android:textColor="#FFFFFF" />
<EditText
android:id="#+id/edittext_signup_reenteremail"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="4.49"
android:background="#android:color/transparent"
android:gravity="center"
android:hint="john#xyz.com"
android:password="false"
android:singleLine="true"
android:textColor="#FFFFFF"
android:textColorHint="#FFFFFF" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="#+id/ll_signup_dob_button_parent"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="13dp"
android:divider="#drawable/divider"
android:gravity="center"
android:orientation="horizontal"
android:showDividers="middle"
android:visibility="visible"
android:weightSum="3" >
<Button
android:id="#+id/button_signup_day"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/round_button"
android:text="BirthDate"
android:textColor="#000000"
android:textSize="10sp" />
<Button
android:id="#+id/button_signup_month"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/round_button"
android:divider="#drawable/divider"
android:showDividers="middle"
android:text="BirthMonth"
android:textColor="#000000"
android:textSize="10sp" />
<Button
android:id="#+id/button_singup_year"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/round_button"
android:singleLine="true"
android:text="BirthYear"
android:textColor="#000000"
android:textSize="10sp" />
</LinearLayout>
<LinearLayout
android:id="#+id/ll_singup_radio_gender_parent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:layout_marginTop="10dp"
android:orientation="horizontal"
android:visibility="visible" >
<RadioGroup
android:id="#+id/radio_signup_radiogroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<RadioButton
android:id="#+id/radiobutton_signup_male"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:cursorVisible="true"
android:text="male "
android:textColor="#FFFFFF"
android:textColorHighlight="#ED933E" />
<RadioButton
android:id="#+id/radiobutton_signup_female"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="female"
android:textColor="#FFFFFF" />
</RadioGroup>
</LinearLayout>
<Button
android:id="#+id/button_signup_createaccount"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="13dp"
android:layout_marginRight="13dp"
android:layout_weight=".003"
android:background="#drawable/colored_button"
android:text="Create My Account"
android:visibility="visible" />
</LinearLayout>

These are the causes of your issue
android:weightSum="10"
You have to fill parent on every view and give each one a weight to just to make this work. You can achieve a good looking app that way but it is quite labor intensive and we have not even discussed text size among different devices.
Also other stuff like
android:layout_marginLeft="7dp"
Imagine a 10 inch tablet and a normal sized phone. Think of the different dimensions of the two and how your application will stretch . What happens if your turn your app sideways? How would it look then?
Go here and when your done reading it read it again.
http://developer.android.com/training/basics/supporting-devices/screens.html

Scaling issue in a RadioButton with text

Please have a look at the following code
input.xml
<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"
tools:context=".MainActivity"
android:background="#drawable/background_main" >
<ImageView
android:id="#+id/logo_image"
android:background="#drawable/background_green"
android:src="#drawable/titleimage"
android:layout_width="match_parent"
android:layout_height="50dp"
/>
<ScrollView
android:id="#+id/scroller"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#id/logo_image"
android:layout_marginTop="10dp"
>
<TableLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:stretchColumns="*" >
<TableRow
android:id="#+id/device_type_row"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:layout_marginRight="5dp" >
<RadioButton
android:id="#+id/device_type_radio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_weight="2"
android:text="#string/device_type" />
<RadioGroup
android:id="#+id/device_type_radio_selection"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="horizontal">
<RadioButton
android:id="#+id/radioIos"
android:layout_width="wrap_content"
android:layout_height = "wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/iOS"
/>
<RadioButton
android:id="#+id/radioAndroid"
android:layout_width="wrap_content"
android:layout_height = "wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/android"
/>
</RadioGroup>
</TableRow>
<TableRow
android:id="#+id/days_as_customers_row"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:layout_marginRight="5dp" >
<RadioButton
android:id="#+id/days_as_customers_radio"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/days_as_customers" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:weightSum="2" >
<SeekBar
android:id="#+id/days_as_customer_seekbar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" />
<TextView
android:id="#+id/days_as_customer_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1/210"
android:layout_weight="1"
android:singleLine="true"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>
</TableRow>
</TableLayout>
</ScrollView>
<Button
android:id="#+id/input_submit_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:background="#drawable/submit_button_img" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:background="#drawable/logo"/>
</RelativeLayout>
Basically, this gives the following UI
Now the problem is, the RadioButtons with text in the first column of the table takes only 40% of the available width. But, I need them to take 75% of the available width, and the things in second column can get the rest.
How can I do this?

Try 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"
tools:context=".MainActivity"
android:background="#drawable/background_main" >
<ImageView
android:id="#+id/logo_image"
android:background="#drawable/background_green"
android:src="#drawable/titleimage"
android:layout_width="match_parent"
android:layout_height="50dp"
/>
<ScrollView
android:id="#+id/scroller"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#id/logo_image"
android:layout_marginTop="10dp"
>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<LinearLayout
android:id="#+id/device_type_row"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:layout_marginRight="5dp" >
<RadioButton
android:id="#+id/device_type_radio"
android:layout_width="0dp"
android:layout_weight="0.75"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/device_type" />
<RadioGroup
android:id="#+id/device_type_radio_selection"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.25"
android:orientation="horizontal">
<RadioButton
android:id="#+id/radioIos"
android:layout_width="wrap_content"
android:layout_height = "wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/iOS"
/>
<RadioButton
android:id="#+id/radioAndroid"
android:layout_width="wrap_content"
android:layout_height = "wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/android"
/>
</RadioGroup>
</LinearLayout>
<LinearLayout
android:id="#+id/days_as_customers_row"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:layout_marginRight="5dp" >
<RadioButton
android:id="#+id/days_as_customers_radio"
android:layout_width="0dp"
android:layout_weight="0.75"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/days_as_customers" />
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.25">
<SeekBar
android:id="#+id/days_as_customer_seekbar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" />
<TextView
android:id="#+id/days_as_customer_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1/210"
android:layout_weight="1"
android:singleLine="true"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</ScrollView>
<Button
android:id="#+id/input_submit_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:background="#drawable/submit_button_img" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:background="#drawable/logo"/>
</RelativeLayout>

Too much gap between table rows

Please have a look at the following code
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".HomeScreen" >
<TableLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:stretchColumns="*"
android:layout_margin="10dp"
android:layout_centerInParent="true"
android:weightSum="4" >
<TableRow
android:id="#+id/tableRow1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".3"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:gravity="center"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/fStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".3"
android:gravity="center"
android:clickable="true"
android:background="#android:drawable/btn_default"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/rStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
</TableRow>
<TableRow
android:id="#+id/tableRow2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/cStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/aStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/lStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
</TableRow>
<TableRow
android:id="#+id/tableRow3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/oStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/tStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/eStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
</TableRow>
<TableRow
android:id="#+id/tableRow4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/hStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/dStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView12"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView12"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/aStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
</TableRow>
</TableLayout>
</RelativeLayout>
In WVGA 5.1 Screen, this generates the following UI
As you can see, there is a massive gap between rows. I want to avoid this, so it will look good in all smartphones. How can I do this?

Make height & width of tableRow as fill_parent and height of every LinearLayout also as fill_parent
Use this data
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".HomeScreen" >
<TableLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:stretchColumns="*"
android:layout_margin="10dp"
android:layout_centerInParent="true"
android:weightSum="4" >
<TableRow
android:id="#+id/tableRow1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight=".3"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:gravity="center"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/fStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight=".3"
android:gravity="center"
android:clickable="true"
android:background="#android:drawable/btn_default"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/rStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
</TableRow>
<TableRow
android:id="#+id/tableRow2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/cStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/aStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/lStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
</TableRow>
<TableRow
android:id="#+id/tableRow3"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/oStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/tStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/eStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
</TableRow>
<TableRow
android:id="#+id/tableRow4"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/hStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/dStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight=".3"
android:gravity="center"
android:background="#android:drawable/btn_default"
android:clickable="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView12"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView12"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/aStr"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
</TableRow>
</TableLayout>
</RelativeLayout>

Table row's height could be match_parent and width could be 0dip.

Try setting android:layout_margin to abit less and let me know if it solves the problem.

It's because your using linear layout in vertical and applying weight of 3

In your TableLayout Set the height to wrap_content and your space will be removed.
android:layout_height="wrap_content"
Also to get the best result of the android:weight property set the each layout's width to 0dp wherever you have assigned a weight.