Progress Is OverLapping My View ...Any Ui Expert ??

Question

<?xml version="1.0" encoding="utf-8"?>

    <LinearLayout android:layout_height="match_parent"
 android:background="@drawable/log_bg"
 android:layout_width="match_parent"
 android:weightSum="1"
 tools:context="com.example.agiletech.agiletech.Login"
 xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:orientation="vertical">
    <ScrollView android:layout_height="match_parent"
 android:layout_width="match_parent"
 android:layout_weight="1"
 xmlns:android="http://schemas.android.com/apk/res/android">

        <LinearLayout
 android:orientation="vertical"
 android:layout_weight="1"
 android:layout_width="match_parent"
 android:layout_height="match_parent">

            <ImageView
 android:layout_width="263dp"
 android:layout_height="141dp"
 android:layout_weight="1"
 android:layout_gravity="center"
 android:background="@drawable/login_img"
 />

            <EditText
 android:id="@+id/username"
 android:layout_width="259dp"
 android:layout_height="40dp"
 android:layout_marginTop="10dp"
 android:layout_gravity="center"
 android:background="@drawable/round"
 android:drawableLeft="@android:drawable/ic_secure"
 android:gravity="center"
 android:layout_weight="1"  android:hint="Username"
 android:padding="5dp"
 android:inputType="text"
 android:textColor="#000000"
 />

            <ProgressBar
 android:id="@+id/pbb"
 style="?android:attr/progressBarStyleLarge"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_gravity="center"
 android:indeterminateDrawable="@drawable/custom_progress" />

            <EditText
 android:id="@+id/userpassword"
 android:layout_width="259dp"
 android:layout_height="40dp"
 android:layout_gravity="center"
 android:inputType="textPassword"
 android:layout_marginTop="10dp"

 android:background="@drawable/round"
 android:hint="****"
 android:drawableLeft="@android:drawable/ic_partial_secure"

 android:padding="5dp"
 android:gravity="center"
 android:layout_weight="1"
 android:textColor="#000000"
 />
<Space
 android:layout_width="match_parent"
 android:layout_height="20dp" />
<Button
 android:id="@+id/login_bn"
 android:layout_width="273dp"
 android:layout_height="39dp"
 android:background="@drawable/btn"
 android:text="LOGIN"
 android:layout_weight="1"
 android:layout_gravity="center"
 android:textColor="@android:color/background_light"
/>
  <TextView
 android:id="@+id/fo"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_marginTop="20dp"
 android:textSize="14dp"
 android:layout_gravity="center"
 android:text=" Forgot Password ? "
 android:layout_weight="1"
 android:textAppearance="@style/TextAppearance.AppCompat"
 android:textColor="@android:color/holo_orange_light" />
        <TextView
 android:id="@+id/textView3"
 android:textColor="@color/bpWhite"
 android:gravity="center"
 android:layout_gravity="center"
android:layout_weight="1"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="I don't have an account yet. " />
<Button
 android:id="@+id/signup"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:layout_weight="1"
 android:layout_gravity="center"
 android:background="@color/bpDarker_blue"
 android:text="SIGN Up"
 android:textColor="@android:color/background_light" />
</LinearLayout>
</ScrollView>
<FrameLayout
 android:layout_width="wrap_content"
 android:layout_height="wrap_content">
</FrameLayout>
</LinearLayout>