title: How to show TextView in xml layout
body: <p>i have a layout made in xml for an android app. The last textview it is not shown. why? what can i do? i try setting the linearlayout with height : fill_parent, wrap_content and match_parent: 
  this is the layout:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical" android:layout_width="fill_parent"
  android:layout_height="fill_parent" android:background="@drawable/sfondo"&gt;
  &lt;LinearLayout android:id="@+id/linearLayout2"
      android:layout_height="wrap_content" android:layout_width="match_parent"
      android:orientation="vertical"&gt;
      &lt;LinearLayout android:id="@+id/linearLayout1"
          android:layout_height="fill_parent" android:weightSum="1"
          android:layout_width="fill_parent" android:orientation="horizontal"&gt;
          &lt;ImageButton android:id="@+id/back1" android:src="@drawable/back"
              android:background="@null" android:layout_marginTop="25dip"
              android:layout_width="wrap_content" android:layout_height="wrap_content"&gt;
          &lt;/ImageButton&gt;
          &lt;ImageView android:layout_height="wrap_content" android:id="@+id/logoTC"
              android:src="@drawable/trovachiavi_contatti" android:layout_width="wrap_content"
              android:layout_marginTop="20dp"&gt;
          &lt;/ImageView&gt;
          &lt;ImageButton android:id="@+id/infoButton"
              android:background="@null" android:layout_height="wrap_content"
              android:layout_marginTop="10dip" android:src="@drawable/info_mini"
              android:layout_width="wrap_content"&gt;&lt;/ImageButton&gt;
      &lt;/LinearLayout&gt;
  &lt;/LinearLayout&gt;
  &lt;LinearLayout android:layout_width="match_parent"
      android:layout_height="fill_parent" android:id="@+id/layoutGif1"
      android:orientation="vertical"&gt;
      &lt;spazio.digitale.com.GIFView
          android:layout_gravity="center" android:layout_width="wrap_content"
          android:layout_height="220dp" android:id="@+id/GIFMulti"
          android:layout_marginLeft="40dp"&gt;&lt;/spazio.digitale.com.GIFView&gt;
      &lt;TextView android:layout_height="wrap_content" android:id="@+id/testoAiuto"
          android:textAppearance="?android:attr/textAppearanceMedium"
          android:layout_width="wrap_content" android:gravity="center"
          android:textColor="@android:color/black" android:layout_marginTop="-210dp"&gt;&lt;/TextView&gt;
      &lt;ImageButton android:layout_gravity="center|bottom"
          android:layout_width="wrap_content" android:layout_marginTop="25dp"
          android:layout_height="wrap_content" android:background="@null"
          android:id="@+id/avvia_cerca"&gt;&lt;/ImageButton&gt;
      &lt;TextView android:layout_width="match_parent" android:id="@+id/testoRicercaMulti"
          android:layout_height="wrap_content" android:textColor="@android:color/black"
          android:textSize="14dp" android:gravity="center"
          android:layout_gravity="center" android:layout_marginLeft="10dp"
          android:layout_marginRight="10dp"&gt;
      &lt;/TextView&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p></p>