Tell me, is it wise to use such a layout or are there better options? And how to make the picture in the image-loaf displayed in full? I have in the picture only a piece of the image. Set the size manually, did not help 
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:orientation="horizontal"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:orientation="vertical"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="top|center" android:text="@string/europa" /> <ImageButton android:id="@+id/europa" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:src="@drawable/europa" /> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:orientation="vertical"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="top|center" android:text="@string/asia" /> <ImageButton android:id="@+id/asia" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:src="@drawable/asia" /> </LinearLayout> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" android:layout_weight="1"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" android:layout_weight="1" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/north_america" android:layout_gravity="top|center"/> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/north_america" android:layout_weight="1" android:id="@+id/north_america" /> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" android:layout_weight="1"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/south_america" android:layout_gravity="top|center"/> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/south_america" android:layout_weight="1" android:id="@+id/south_america" /> </LinearLayout> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" android:layout_weight="1"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" android:layout_weight="1"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/africa" android:layout_gravity="top|center" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/africa" android:layout_weight="1" android:id="@+id/africa" /> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" android:layout_weight="1"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/australia" android:layout_gravity="top|center"/> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/australia" android:layout_weight="1" android:id="@+id/australia" /> </LinearLayout> </LinearLayout> </LinearLayout> bold text