Android Keyboard hides EditText-第2页回答

When I try to write something in an EditText which is at the bottom of the screen, the soft keyboard hides the EditText. How can I resolve this issue? Below is my xml code. I'm using this in a Fragment.

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >


        <LinearLayout
            android:id="@+id/linearLayoutTopDetails"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_below="@+id/linearLayoutTop"
            android:layout_marginLeft="6dp"
            android:layout_marginRight="6dp"
            android:layout_marginTop="6dp"
            android:orientation="vertical" >

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:background="@drawable/list_design1"
                android:orientation="vertical" >

                <LinearLayout
                    android:layout_width="fill_parent"
                    android:layout_height="80dp"
                    android:layout_weight="100"
                    android:orientation="horizontal" >

                    <ImageView
                        android:id="@+id/ImageViewProfImagePostDetail"
                        android:layout_width="0dp"
                        android:layout_height="fill_parent"
                        android:layout_marginTop="2dp"
                        android:layout_weight="24.84"
                        android:paddingLeft="5dp"
                        android:paddingRight="5dp"
                        android:paddingTop="5dp" />

                    <LinearLayout
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_weight="60"
                        android:orientation="vertical" >

                        <TextView
                            android:id="@+id/textViewNamePostDetail"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:text="Robin"
                            android:textSize="17sp" />

                        <TextView
                            android:id="@+id/textViewLocationPostDetail"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_marginTop="1dp"
                            android:drawableLeft="@drawable/location"
                            android:text="beijing, China" />

                        <TextView
                            android:id="@+id/textViewTimeAgoPostDetail"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:text=" 18min ago" />
                    </LinearLayout>

                    <LinearLayout
                        android:layout_width="0dp"
                        android:layout_height="fill_parent"
                        android:layout_weight="15"
                        android:orientation="horizontal" >

                        <TextView
                            android:id="@+id/textViewReportAbusePostDetail"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center"
                            android:background="@drawable/flag"
                            android:paddingLeft="5dp" />

                        <TextView
                            android:id="@+id/textViewDeletePostDetail"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center"
                            android:layout_marginLeft="15dp"
                            android:background="@drawable/delete"
                            android:visibility="gone" />
                    </LinearLayout>
                </LinearLayout>

                <TextView
                    android:id="@+id/textViewDescriptionPostDetail"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="20dp"
                    android:layout_marginTop="2dp"
                    android:singleLine="false"
                    android:text="Description or caption of the post"
                    android:textSize="17sp" />
            </LinearLayout>

            <ImageView
                android:id="@+id/feedPostedImagePostDetail"
                android:layout_width="fill_parent"
                android:layout_height="200dp"
                android:layout_marginTop="5dp"
                android:scaleType="fitCenter"
                android:visibility="gone" />

            <LinearLayout
                android:id="@+id/linearLayoutOptions"
                android:layout_width="fill_parent"
                android:layout_height="33dp"
                android:layout_marginTop="2dp"
                android:layout_weight="100"
                android:background="@drawable/bar"
                android:orientation="horizontal" >

                <TextView
                    android:id="@+id/textViewShakePostDetail"
                    android:layout_width="0dp"
                    android:layout_height="fill_parent"
                    android:layout_marginLeft="15dp"
                    android:layout_weight="25"
                    android:drawableLeft="@drawable/like"
                    android:gravity="center"
                    android:singleLine="true"
                    android:text="Shake"
                    android:textSize="12sp" />

                <TextView
                    android:id="@+id/textViewCommentPostDetail"
                    android:layout_width="0dp"
                    android:layout_height="fill_parent"
                    android:layout_weight="41"
                    android:drawableLeft="@drawable/comment"
                    android:gravity="center"
                    android:paddingLeft="20dp"
                    android:text="Comment" />

                <TextView
                    android:id="@+id/textViewSharePostDetail"
                    android:layout_width="0dp"
                    android:layout_height="fill_parent"
                    android:layout_weight="33"
                    android:drawableLeft="@drawable/share"
                    android:gravity="center"
                    android:paddingLeft="20dp"
                    android:text="Spread" />
            </LinearLayout>
        </LinearLayout>

        <ListView
            android:id="@+id/listViewFeedsDetail1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_below="@+id/linearLayoutTopDetails"
            android:layout_marginBottom="4dp"
            android:layout_marginLeft="6dp"
            android:layout_marginRight="6dp"
            android:layout_marginTop="6dp" >
        </ListView>

        <LinearLayout
            android:id="@+id/linearLayoutPostcomment"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_below="@+id/listViewFeedsDetail1"
            android:background="#FFFFFF"
            android:orientation="horizontal"
            android:weightSum="100" >

            <EditText
                android:id="@+id/editTextComment"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="80" />

            <Button
                android:id="@+id/buttonPostComment"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="20"
                android:background="#F0F8FF"
                android:text="Post" >
            </Button>
        </LinearLayout>
    </RelativeLayout>
</ScrollView>

I have tried to resolve this issue by adding changes through code but no success.

Below is the image before and after clicking on the EditText.

screenshot without soft keyboard, EditText visible