android - I can not make a view clickable -

i have simple xml layout this

    <relativelayout                 android:layout_width="match_parent"                 android:layout_height="50dp"                 android:background="#404040" >                  <imageview                     android:id="@+id/imageview1"                     android:layout_width="20dp"                     android:layout_height="20dp"                     android:layout_marginbottom="15dp"                     android:layout_marginleft="10dp"                     android:layout_margintop="15dp"                     android:onclick="clickback"                     android:src="@drawable/btn_arrow_back" />                  <textview                     android:id="@+id/btn_back"                     android:layout_width="wrap_content"                     android:layout_height="wrap_content"                     android:layout_centerinparent="true"                     android:layout_torightof="@+id/imageview1"                     android:background="#404040"                     android:onclick="clickback2"                     android:textcolor="@android:color/white"                     android:textsize="20sp" /> </relativelayout> 

and set

public void clickback(view v) {         finish();     }  public void clickback2(view v){         finish();     } 

the problem can click imageview can not click textview. please tell me wrong this? thank in advance!

thank l-x information, don't want change dp of imageview wrap 2 relative layout , problem solved ;)

 <relativelayout                      android:layout_width="wrap_content"                     android:layout_height="match_parent"                     android:onclick="clickback">                 <imageview                     android:id="@+id/imageview1"                     android:layout_width="20dp"                     android:layout_height="20dp"                     android:layout_marginbottom="15dp"                     android:layout_marginleft="10dp"                     android:layout_margintop="15dp"                      android:src="@drawable/btn_arrow_back" />                  <textview                     android:id="@+id/btn_back"                     android:layout_width="wrap_content"                     android:layout_height="wrap_content"                     android:layout_centerinparent="true"                     android:layout_torightof="@+id/imageview1"                     android:background="#404040"                     android:textcolor="@android:color/white"                     android:textsize="20sp" /> </relativelayout>