Crossword running on different devices

Question

What’s the best way to cross-word correctly on different devices?

I made the squares individually being each one textview with a background, because these squares vary in the color of your edges, in case the background, this way was perfect in my mobile S3 mini, but when I rotate in other devices are not aligned properly.

I already researched and saw that I would have to put images for backgrounds in different sizes in Source but it still wasn’t very cool. What I could do?

follows a part of the layout because did not give everything, sorry for the mistakes still estouf souring some tests and other things is for lack of experience even, thanks

<TextView
    android:id="@+id/textView1"
    android:layout_width="match_parent"
    android:layout_height="100dp"
    android:background="#000000"
    android:gravity="center"
    android:text="Escolha um dos quadrados"
    android:textColor="#ffffff"
    android:textSize="20sp" />

<GridLayout
    android:id="@+id/quadrados"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:columnCount="8" >

    <TextView
        android:id="@+id/TextView01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_column="0"
        android:layout_gravity="left|top"
        android:layout_row="0"
        android:background="@drawable/back_black"
        android:clickable="true"
        android:gravity="center"
        android:onClick="wordRip"
        android:tag="1"
        android:textSize="21sp" />

    <TextView
        android:id="@+id/TextView02"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_column="1"
        android:layout_gravity="left|top"
        android:layout_row="0"
        android:background="@drawable/back_black"
        android:clickable="true"
        android:gravity="center"
        android:onClick="wordRip"
        android:tag="1"
        android:textSize="21sp" />

    <TextView
        android:id="@+id/TextView03"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_column="2"
        android:layout_gravity="left|top"
        android:layout_row="0"
        android:background="@drawable/back_black"
        android:clickable="true"
        android:gravity="center"
        android:onClick="wordRip"
        android:tag="1"
        android:textSize="21sp" />

    <TextView
        android:id="@+id/TextView04"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_column="3"
        android:layout_gravity="left|top"
        android:layout_row="0"
        android:background="@drawable/back_fullblack"
        android:gravity="center"
        android:tag="1"
        android:textSize="21sp" />

    <TextView
        android:id="@+id/TextView05"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_column="04"
        android:layout_gravity="left|top"
        android:layout_row="0"
        android:background="@drawable/back_black"
        android:clickable="true"
        android:gravity="center"
        android:onClick="wordRede"
        android:tag="1"
        android:textSize="21sp" />

    <TextView
        android:id="@+id/TextView06"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_column="5"
        android:layout_gravity="left|top"
        android:layout_row="0"
        android:background="@drawable/back_black"
        android:clickable="true"
        android:gravity="center"
        android:onClick="wordEstrela"
        android:tag="1"
        android:textSize="21sp" />