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Layout always fluctuates whenever I try to open the notification shutter or can you please refer some blogs

https://i.stack.imgur.com/VoBbj.gif
the layout is behaving awkward, I am not aware why if anybody could help me with this that will be great.
Whenever I try to open the notification panel, the layout change its position.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:orientation="vertical"
android:background="#color/dark"
>
<RelativeLayout
android:id="#+id/top_card"
android:background="#color/lightDark"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="10dp"
>
<LinearLayout
android:id="#+id/search"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:layout_marginTop="20dp"
android:background="#drawable/round"
android:layout_alignParentStart="true">
<ImageView
android:layout_width="30dp"
android:layout_height="35dp"
android:src="#drawable/ic_about"
android:id="#+id/info"
android:contentDescription="#string/todo8">
</ImageView>
</LinearLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/musify"
android:textStyle="bold"
android:layout_toEndOf="#+id/search"
android:layout_toStartOf="#+id/menu_bar"
android:textSize="26sp"
android:textColor="#color/day"
android:textAlignment="center"
android:layout_centerInParent="true"
/>
<LinearLayout
android:id="#+id/menu_bar"
android:layout_alignParentEnd="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="20dp"
android:layout_marginTop="20dp"
android:layout_marginLeft="20dp"
android:background="#drawable/round"
android:layout_marginRight="20dp">
<ImageView
android:layout_width="30dp"
android:layout_height="35dp"
android:id="#+id/menu"
android:src="#drawable/ic_menu"
android:contentDescription="#string/todo5" />
</LinearLayout>
</RelativeLayout>
<androidx.recyclerview.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/bottom_card"
android:layout_below="#+id/top_card"
android:id="#+id/music_recycler_view"
>
</androidx.recyclerview.widget.RecyclerView>
<LinearLayout
android:id="#+id/bottom_card"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_alignParentBottom="true"
android:paddingTop="15dp"
android:background="#drawable/round"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<TextView
android:id="#+id/musicbar_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:layout_centerVertical="true"
android:textColor="#color/day"
android:layout_marginBottom="10dp"
android:layout_marginStart="10dp"
/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="5dp"
>
<TextView
android:id="#+id/musicbar_artist"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="16sp"
android:layout_centerVertical="true"
android:textColor="#color/day"
android:paddingBottom="5dp"
android:layout_marginStart="10dp" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/round"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/_0_00"
android:id="#+id/start_time"
android:textSize="15sp"
android:layout_centerVertical="true"
android:textColor="#color/day"
android:background="#color/lightDark"
android:layout_marginStart="5dp" />
<SeekBar
android:id="#+id/playerseekbar"
android:layout_centerVertical="true"
android:progressDrawable="#drawable/custom_seekbar"
android:progress="0"
android:max="100"
android:thumb="#drawable/custom_thumb"
android:layout_toEndOf="#+id/start_time"
android:layout_toStartOf="#+id/end_time"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:layout_marginEnd="10dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/end_time"
android:text="#string/_0_00"
android:textSize="15sp"
android:layout_centerVertical="true"
android:textColor="#color/day"
android:layout_alignParentEnd="true"/>
</RelativeLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center"
android:gravity="center">
<ImageView
android:id="#+id/prev"
android:layout_width="50dp"
android:layout_height="50dp"
android:src="#drawable/ic_baseline_skip_previous_24"
android:background="#drawable/round_icon"
android:padding="10dp"
android:contentDescription="#string/todo6" />
<androidx.cardview.widget.CardView
android:id="#+id/play_pause_card"
android:layout_width="90dp"
android:layout_height="100dp"
app:cardBackgroundColor="#color/card"
app:cardCornerRadius="20dp"
app:cardElevation="10dp"
app:cardUseCompatPadding="true"
android:outlineAmbientShadowColor="#color/black"
android:outlineSpotShadowColor="#color/black"
>
<ImageView
android:id="#+id/play_pause_button"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:src="#drawable/ic_baseline_play_arrow_24"
android:contentDescription="#string/todo1" />
</androidx.cardview.widget.CardView>
<ImageView
android:id="#+id/next"
android:layout_width="50dp"
android:layout_height="50dp"
android:src="#drawable/ic_baseline_skip_next_24"
android:background="#drawable/round_icon"
android:padding="10dp"
android:contentDescription="#string/todo7" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
Help me with this, I have no clue what's happening!
And it would be great if somebody can give me some ideas for the bottom card to make it look good.

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
I added this in the onCreate() method, and it worked.

Why data is displayed without spaces?

I have some trouble.In my application I use ListView, each element is list_item.xml. I get som data from server and fills listView. The problem is that the data are displayed without spaces between them. Although the designer in android studio, everything is displayed correctly with all formattng.
My code list_item.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal"
android:layout_gravity="center"
android:weightSum="1">
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.2"
android:paddingBottom="5dp">
<TextView
android:text="123"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/tv_employee_id"
android:textSize="40dp"
android:divider="#ffffff"
android:layout_gravity="center"
android:textAlignment="center"
/>
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.4">
<TextView
android:text="Ivan"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/tv_employee_name"
android:layout_gravity="center"
android:textSize="40dp"
android:divider="#ffffff"
android:textAlignment="center" />
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/linearLayout2"
android:layout_weight="0.2">
<TextView
android:text="Ivanoff"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/tv_employee_last_name"
android:layout_gravity="center"
android:textSize="40dp"
android:divider="#ffffff"
android:textAlignment="center" />
</LinearLayout>
</LinearLayout>
And my listViewXML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:weightSum="2"
android:layout_gravity="center"
android:background="#ffaac4ee"
>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:weightSum="1"
android:background="#ff7b9fee"
>
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.2"
android:paddingBottom="5dp">
<TextView
android:text="№"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/id"
android:textSize="30dp"
android:divider="#ffffff"
android:layout_gravity="center"
android:textAlignment="center"
/>
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/linearLayout"
android:layout_weight="0.4">
<TextView
android:text="Имя"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView5"
android:layout_gravity="center"
android:textSize="30dp"
android:divider="#ffffff"
android:textAlignment="center" />
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/linearLayout2"
android:layout_weight="0.4">
<TextView
android:text="Фамилия"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView9"
android:layout_gravity="center"
android:textSize="30dp"
android:divider="#ffffff"
android:textAlignment="center" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#ffaac4ee"
>
<ListView
android:id="#+id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
/>
</LinearLayout>
</LinearLayout>

I just change ListView attributes to
android:layout_width="fill_parent"
android:layout_height="fill_parent"
and its works!

I have edited your code by gravity:
try this:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal"
android:layout_gravity="center"
android:weightSum="1">
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.2"
android:paddingBottom="5dp">
<TextView
android:text="123"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/tv_employee_id"
android:textSize="40dp"
android:divider="#ffffff"
android:layout_gravity="left"
android:textAlignment="textStart"
/>
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.4">
<TextView
android:text="Ivan"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/tv_employee_name"
android:layout_gravity="center"
android:textSize="40dp"
android:divider="#ffffff"
android:textAlignment="center" />
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/linearLayout2"
android:gravity="right"
android:layout_weight="0.2">
<TextView
android:text="Ivanoff"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/tv_employee_last_name"
android:layout_gravity="right"
android:textSize="40dp"
android:divider="#ffffff"
android:textAlignment="center" />
</LinearLayout>

Center a TextView: Why it doesn't work?

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:id="#+id/textView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:textColor="#color/red"
android:textStyle="bold"
android:text="#string/desc"
/>
<TextView
android:id="#+id/textView2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="60dp"
android:textStyle="bold|italic"
android:text="Welcome"
android:textAppearance="?android:attr/textAppearanceLarge"
/>
</RelativeLayout>
I would like to center the second TextView but I can not ... This is the code, you know help me? Where is the error? I'm going crazy!

Add the following to your textview:
android:gravity="center"
But at the same time I would recommend to reconsider your layout as you're having 2 textviews taking the full screen.
Edit
center centers both on horizontal and vertical. If you need only on a specific axis, use one of:
android:gravity="center_horizontal"
or
android:gravity="center_vertical"

try this :
<TextView
android:id="#+id/textView2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="60dp"
android:textStyle="bold|italic"
android:text="Welcome"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceLarge"
/>

What about setting it this way
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout2"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TextView
android:id="#+id/textView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentTop="true"
android:gravity="center"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:textColor="#color/red"
android:textStyle="bold"
android:text="#string/desc" />
<TextView
android:id="#+id/textView2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentTop="true"
android:gravity="center"
android:layout_centerHorizontal="true"
android:layout_marginTop="60dp"
android:textStyle="bold|italic"
android:text="Welcome"
android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>
Alternatively
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout2"
android:layout_width="fill_parent"
android:gravity="center"
android:layout_height="fill_parent">
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_contet"
android:layout_height="fill_parent"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:textColor="#color/red"
android:textStyle="bold"
android:text="#string/desc" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="60dp"
android:textStyle="bold|italic"
android:text="Welcome"
android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>

Change your layout like this
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout2"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<TextView
android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:textColor="#color/red"
android:textStyle="bold"
android:text="#string/desc"
/>
<TextView
android:id="#+id/textView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_marginTop="60dp"
android:textStyle="bold|italic"
android:text="Welcome"
android:textAppearance="?android:attr/textAppearanceLarge"
/>
</RelativeLayout>
Always use match_parent instead of fill_parent

// try this
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout2"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_marginTop="60dp"
android:textStyle="bold|italic"
android:text="Welcome"
android:textAppearance="?android:attr/textAppearanceLarge"/>
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_above="#id/textView2"
android:layout_marginTop="20dp"
android:textColor="#color/red"
android:text="#string/desc"
android:textStyle="bold"/>
</RelativeLayout>

Layout for different size screens (Android)

I'm working on an app, it looks great on 7" devices (Nexus and Dell streak 7). I created the images from different densities, so it looks good.
However, when I try to run the app on my phone (Samsung Galaxy 2) or Tablet 10" it doesn't look good at all.
Here is how it looks on the nexus 7":
Here is how it looks on the Galaxy 2 phone:
Here is how it looks on the 10" Tablet:
Here is my layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="#drawable/background1" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/textView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:gravity="center"
android:text="#string/tour_menu"
android:textSize="#dimen/font_large" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/tour_info"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="#dimen/font_medium" />
</LinearLayout>
<TableLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="5dp"
android:shrinkColumns="*"
android:paddingRight="5dp"
android:orientation="vertical" >
<TableRow
android:id="#+id/tableRow1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageButton
android:id="#+id/passenger_list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:gravity="center_horizontal|center_vertical"
android:background="#drawable/pax_list"
android:contentDescription="#string/pass_list" />
<TextView
android:id="#+id/passenger_list_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/pass_list"
android:textSize="#dimen/font_medium" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageButton
android:id="#+id/arrivals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal|center_vertical"
android:background="#drawable/arrivals"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:padding="44dp"
android:contentDescription="#string/arrivals" />
<TextView
android:id="#+id/arrivals_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/arrivals"
android:textSize="#dimen/font_medium" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageButton
android:id="#+id/departures"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:background="#drawable/departures"
android:contentDescription="#string/departures" />
<TextView
android:id="#+id/departures_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/departures"
android:textSize="#dimen/font_medium" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageButton
android:id="#+id/master_rooming"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:background="#drawable/master_rooming_list"
android:contentDescription="#string/rooming" />
<TextView
android:id="#+id/master_rooming_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/rooming"
android:textSize="#dimen/font_medium" />
</LinearLayout>
</TableRow>
<TableRow
android:id="#+id/tableRow2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="50dp" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageButton
android:id="#+id/itinerary"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:background="#drawable/itinerary"
android:contentDescription="#string/itinerary" />
<TextView
android:id="#+id/itinerary_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/itinerary"
android:textSize="#dimen/font_medium" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageButton
android:id="#+id/voucher"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:background="#drawable/vouchers"
android:contentDescription="#string/voucher" />
<TextView
android:id="#+id/voucher_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/voucher"
android:textSize="#dimen/font_medium" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageButton
android:id="#+id/qa"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:background="#drawable/qa_list"
android:contentDescription="#string/qa" />
<TextView
android:id="#+id/qa_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/qa"
android:textSize="#dimen/font_medium" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageButton
android:id="#+id/optionals"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:background="#drawable/optionals"
android:contentDescription="#string/itinerary" />
<TextView
android:id="#+id/optionals_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/optionals"
android:textSize="#dimen/font_medium" />
</LinearLayout>
</TableRow>
<TableRow
android:id="#+id/tableRow3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="50dp" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageButton
android:id="#+id/flights"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:background="#drawable/flights"
android:contentDescription="#string/itinerary" />
<TextView
android:id="#+id/flights_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/flights"
android:textSize="#dimen/font_medium" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageButton
android:id="#+id/close_tour"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:background="#drawable/close_tour"
android:contentDescription="#string/close" />
<TextView
android:id="#+id/close_tour_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/close"
android:textSize="#dimen/font_medium" />
</LinearLayout>
<!--
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:background="#drawable/icon"
android:contentDescription="#string/voucher" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/voucher"
android:textSize="#dimen/font_medium" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:background="#drawable/icon"
android:contentDescription="#string/qa" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/qa"
android:textSize="#dimen/font_medium" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"
android:background="#drawable/icon"
android:contentDescription="#string/close" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/close"
android:textSize="#dimen/font_medium" />
</LinearLayout> -->
</TableRow>
</TableLayout>
<!-- Time Stamp at the bottom of the screen -->
<TextView
android:id="#+id/timeStamp"
android:layout_weight="1"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:gravity="bottom|center"
android:textSize="#dimen/font_medium" />
</LinearLayout>

OK after seing your layout file, I think you should do one of the following things:
Use a GridView
Use ImageView instead of ImageButtons
Using GridView can save you a lot of work. Take a look at this website and you might find what you need: http://www.androidviews.net/
If you chose to use ImageViews, you should set the following preferences:
adjustViewBounds="true"
scaleType="centerInside"
That way your images will keep their ratio.
Hope it helps!

You might also look at switching your layout to GridLayout. Cyril Mottier discussed a little bit about how it can help flatten your view hierarchy. It might also give you the simple, out-of-the-box solution you're probably looking for.
https://plus.google.com/118417777153109946393/posts/FugJcLCfkWm

Align textview and progressbar in Android XML

I've already tried to align the smallprogressbar with the textview putting them into a linear layout but it doesn't work. Tryed with android:layout_gravity="left" but it crashes.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="#string/calibration_1"
android:textColor="#33b5e5"
android:textSize="16dp"
android:textStyle="bold" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="#+id/tvNumberWaves"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="#string/calibration_2"
android:textColor="#FFFFFF"
android:textSize="18dp" />
<ProgressBar
android:id="#+id/progressBar1"
style="?android:attr/progressBarStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="#+id/tvIntervalWaves"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="#string/calibration_3"
android:textColor="#FFFFFF"
android:textSize="18dp" />
<ProgressBar
android:id="#+id/progressBar2"
style="?android:attr/progressBarStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
<Button
android:id="#+id/bSetValues"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="#string/calibration_5" />
<ScrollView
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="#string/calibration_6" />
</ScrollView>
</LinearLayout>
Code updated to match your answer.
I put the whole code to show what I have.

Change this line:
android:orientation="vertical"
to this:
android:orientation="horizontal"
Without seeing the rest of your source, I don't know if that will mess up other parts of your layout, so you'll probably want to wrap the TextView and ProgressBar in their own LinearLayout.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="#string/calibration_1"
android:textColor="#33b5e5"
android:textSize="16dp"
android:textStyle="bold" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/tvNumberWaves"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="#string/calibration_2"
android:textColor="#FFFFFF"
android:textSize="18dp" />
<ProgressBar
android:id="#+id/progressBar1"
style="?android:attr/progressBarStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/tvIntervalWaves"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="#string/calibration_3"
android:textColor="#FFFFFF"
android:textSize="18dp" />
<ProgressBar
android:id="#+id/progressBar2"
style="?android:attr/progressBarStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
<Button
android:id="#+id/bSetValues"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="#string/calibration_5" />
<ScrollView
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="#string/calibration_6" />
</ScrollView>
</LinearLayout>