Alternating edit text hint not visible for Arabic

Question

This is kind of weird that in my page where I have 6 edit text fields, only the alternative edit texts are showing hint and rest of them are not. This happens only from Android 4.0 and onward. I don't find any reasons for this. Any suggestions would be helpful.

Here is the code:

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);    // Removes title bar
        setContentView(R.layout.register);

mLang = mPreference.getString("lang", "");

bBlood = (EditText) findViewById(R.id.editText8);
        bDOB = (EditText) findViewById(R.id.editText5);
        bAdd = (EditText) findViewById(R.id.editText6);
        bPhone = (EditText) findViewById(R.id.editText7);
        mProfile = (TextView) findViewById(R.id.textView1);


if(mLang.equalsIgnoreCase("English")){  
        }
        else{
            mProfile.setText(R.string.sign_up_arabic);
            bName.setHint(R.string.name_arabic);
            bDOB.setHint(R.string.name_arabic);
            bAdd.setHint(R.string.address_arabic);
            bPhone.setHint(R.string.name_arabic);
            bBlood.setHint(R.string.blood_arabic);
            mSignUp.setText(R.string.sign_arabic);
        }

And this is the layout for the above code:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#D5D2D2"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_marginBottom="5dp"
        android:layout_marginTop="5dp"
        android:text="@string/sign_up"
        android:textSize="20sp" />

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1" >

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

            <LinearLayout
                android:id="@+id/l1border"
                android:layout_width="fill_parent"
                android:layout_height="1dp"
                android:layout_below="@+id/textView1"
                android:background="#000000" >
            </LinearLayout>

            <LinearLayout
                android:id="@+id/lin1"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/l1border"
                android:layout_marginTop="10dp" >

                <EditText
                    android:id="@+id/editText1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:ems="10"
                    android:hint="@string/name" >
                </EditText>
            </LinearLayout>

            <LinearLayout
                android:id="@+id/lin5"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/lin1"
                android:layout_marginTop="10dp" >

                <EditText
                    android:id="@+id/editText5"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:ems="10"
                    android:hint="@string/age"
                    android:inputType="number" />
            </LinearLayout>

            <LinearLayout
                android:id="@+id/lin6"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/lin5"
                android:layout_marginTop="10dp" >

                <EditText
                    android:id="@+id/editText6"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:ems="10"
                    android:hint="@string/address" />
            </LinearLayout>

            <LinearLayout
                android:id="@+id/lin7"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/lin6"
                android:layout_marginTop="10dp" >

                <EditText
                    android:id="@+id/editText7"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:ems="10"
                    android:hint="@string/phone"
                    android:inputType="numberDecimal" />
            </LinearLayout>

            <LinearLayout
                android:id="@+id/lin8"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/lin7"
                android:layout_marginTop="10dp" >

                <EditText
                    android:id="@+id/editText8"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:ems="10"
                    android:hint="@string/blood" />
            </LinearLayout>

            <Button
                android:id="@+id/button2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignRight="@+id/lin8"
                android:layout_below="@+id/lin8"
                android:layout_marginTop="10dp"
                android:text="@string/sign" />
        </RelativeLayout>
    </ScrollView>

</RelativeLayout>

The Screenshot looks something like this:

Answer 1

remove

 android:layout_below="@+id/textView1" 

from linear layout

Answer 2

I have seen that this two EditText which have not shown hint are inputType set as "number" and "numberDecimal"., so please check one time removing input type.,It's may be creating issue.