Android Studio app:

I'm not too sure why the "Date Picker" shifts all of the other elements way too below the screen...Could somebody please help me fix the content. Thank you! :)

//content.xml

LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:orientation="vertical"  android:layout_width="match_parent"  android:layout_height="match_parent"   > TextView  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:id="@+id/response3" /> TextView  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:id="@+id/examrec" /> TableLayout  android:id="@+id/add_table"  android:layout_width="match_parent"  android:layout_height="379dp"  android:paddingTop="50dp"> TableRow> TextView  android:layout_height="wrap_content"  android:layout_marginLeft="25dp"  android:padding="3dip"  android:text="Unit Name:" /> EditText  android:id="@+id/un"  android:layout_width="190dp"  android:layout_marginRight="130dp"  android:layout_marginLeft="5dp"  android:layout_height="wrap_content" /> TableRow> TableRow> TextView  android:layout_marginLeft="25dp"  android:padding="3dip"  android:layout_marginTop="37dp"  android:text="Date:"  /> DatePicker   android:id="@+id/date"  android:layout_width="314dp"  android:layout_height="325dp"  android:layout_gravity="center"  android:layout_marginLeft="-70dp"  android:scaleX="0.6"  android:scaleY="0.6" /> TableRow> TableRow  android:layout_width="155dp"  android:layout_height="182dp"> TextView  android:layout_marginLeft="25dp"  android:layout_marginTop="100dp"  android:padding="3dip"  android:text="Time:" /> TableRow> TableRow> TextView  android:layout_marginLeft="25dp"  android:padding="3dip"  android:layout_marginTop="20dp"  android:text="Location:" /> EditText  android:id="@+id/loc2"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:layout_marginTop="20dp"  android:minWidth="150dip" /> TableRow> Button  android:id="@+id/add_button3"  android:layout_width="207dp"  android:layout_height="wrap_content"  android:layout_marginLeft="80dp"  android:layout_marginRight="86dp"  android:layout_marginTop="14dp"  android:padding="6dip"  android:text="Add Exam" /> TableLayout> LinearLayout>

4{ 4G "Il 36% , 1:24 am Unit Name: Date: 2018 Tue, 4 Sep. September 2018 Su. MTuhF. Sa Th. 9 10 12 13 4 15