How to Make EditText Box Height Expand

Just add android:lines="6" to your edittext

 <Edittext
      android:id="@+id/edt_address"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:inputType="textMultiLine"
      android:maxLines="6"             
      android:lines="6"
      android:layout_marginTop="@dimen/activity_vertical_margin"
      android:gravity="left"/>

Assume that you just want to have one line at first then expand it to 5 lines and you want to have maximum 10 lines.

<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/etMessageBox"
    android:layout_alignParentLeft="true"
    android:layout_centerVertical="true"
    android:autoLink="all"
    android:hint="@string/message_edit_text_hint"
    android:lines="5"
    android:minLines="1"
    android:gravity="top|left"
    android:maxLines="10"
    android:scrollbars="none"
    android:inputType="textMultiLine|textCapSentences"/>

By increasing android:lines you can define expand it how many lines.

Similar to another question:

Android Word-Wrap EditText text

Here's some example XML code:

<EditText
    android:id="@+id/edtInput"
    android:layout_width="0dip"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:hint="@string/compose_hint"
    android:inputType="textCapSentences|textMultiLine"
    android:maxLength="2000"
    android:maxLines="4" />