Save multiple Edittext : Hello I'm trying to build an app where someone can fill in there personal data like there name, telephonenumber, Email.

I am there that they can do that. I used an .xml file with the EditText.
Now I'm tying to save the edittext so they dont have to fill it in every time they use the app. 

I found some codes here but most off then are just for one Edittext.

Like this one... I can not get this working for multiple Edittext
http://stackoverflow.com/questions/18658308/save-entered-text-in-edittext-via-button


This is my xml file

        <?xml version="1.0" encoding="utf-8"?>
    
    <ScrollView 
        xmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical" >
    
    <LinearLayout 
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical" >
    
        <TextView 
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Vul dit compleet in"
            android:textAppearance="?android:attr/textAppearanceMedium" 
    		android:paddingLeft="10dp"
            android:paddingRight="10dp"
            android:textColor="#000066"
            android:textStyle="bold"/>
    
      <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Naam: "
            android:textAppearance="?android:attr/textAppearanceMedium" 
    		android:paddingLeft="10dp"
    		android:paddingRight="10dp"
    		android:textColor="#000066"
    		android:textStyle="bold"/>
            
        
        <EditText 
            android:id="@+id/edit_Naam"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
     		android:paddingLeft="10dp"
    		android:paddingRight="10dp"
    		android:textColor="#000066"
    		android:hint="Vul uw naam in"/>
        
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Functie: "
            android:textAppearance="?android:attr/textAppearanceMedium" 
    		android:paddingLeft="10dp"
    		android:paddingRight="10dp"
    		android:textColor="#000066"
    		android:textStyle="bold"/>
            
        
        <EditText 
            android:id="@+id/edit_Functie"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
     		android:paddingLeft="10dp"
    		android:paddingRight="10dp"
    		android:textColor="#000066"
    		android:hint="Vul uw functie in"/>
        
            <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Personeelsnummer "
            android:textAppearance="?android:attr/textAppearanceMedium" 
    		android:paddingLeft="10dp"
    		android:paddingRight="10dp"
    		android:textColor="#000066"
    		android:textStyle="bold"/>
            
        
        <EditText 
            android:id="@+id/edit_Plnr"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
     		android:paddingLeft="10dp"
    		android:paddingRight="10dp"
    		android:textColor="#000066"
    		android:hint="Vul uw plnr in"/>
        
        <TextView 
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Email: " 
            android:textAppearance="?android:attr/textAppearanceMedium" 
    		android:paddingLeft="10dp"
    		android:paddingRight="10dp"
    		android:textColor="#000066"
    		android:textStyle="bold"/>
        
        <EditText 
            android:id="@+id/edit_Email"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:inputType="textEmailAddress" 
    		android:paddingLeft="10dp"
    		android:paddingRight="10dp"
    		android:textColor="#000066"
    		android:hint="NS mail"/>
    
        <TextView 
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Telefoon: "  
            android:textAppearance="?android:attr/textAppearanceMedium" 
    		android:paddingLeft="10dp"
    		android:paddingRight="10dp"
    		android:textColor="#000066"
    		android:textStyle="bold"/>
            
         <EditText
             android:id="@+id/edit_Telefoon"  
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:inputType="number" 
    		android:paddingLeft="10dp"
    		android:paddingRight="10dp"
    		android:textColor="#000066"
    		android:hint="zonder +31"/>
         
     
    
    
    
        <Button
            android:id="@+id/button_Opslaan"
    	        android:layout_width="match_parent"
    	        android:layout_height="50dp"
    	        android:layout_below="@+id/edit_Bericht"
    	        android:layout_centerHorizontal="true"
    	        android:layout_marginBottom="48dp"
    	        android:layout_weight="0.03"
                android:background="#009CDE"
                android:drawableLeft="@drawable/ic_launcher"
                android:text="Opslaan"
                android:textColor="#FFFFFF"/>
    
    
    </LinearLayout>
    </ScrollView>

