Put your children in proper container like this.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/realtivelayout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ImageView
android:id="@+id/imageView1"
android:layout_width="50dp"
android:layout_height="50dp"
android:marginRight="10dp"
android:src="@drawable/ic_launcher" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/imageView1"
android:gravity="center"
android:text="TextView"
android:textSize="25dp" />
<ImageView
android:id="@+id/imageView2"
android:layout_width="10dp"
android:layout_height="10dp"
android:layout_alignBottom="@id/textView1"
android:layout_alignParentRight="true"
android:layout_marginRight="25dp"
android:src="@drawable/offline" />
</RelativeLayout>