無法使用Android在設備S3中滾動？

Question

這裏是我的xml代碼，我想在View中應用滾動但在設備屏幕中沒有出現滾動。這裏是XML佈局。有人請告訴我可能的解決方案來克服這種情況.....

<?xml version="1.0" encoding="utf-8"?> 
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:background="@drawable/home_bg" 
    android:orientation="vertical" > 

    <LinearLayout 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:orientation="vertical" > 
     <LinearLayout 
      android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:orientation="vertical" > 

     <ImageView 
      android:id="@+id/askfatwa_header" 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:src="@drawable/askfatwa_top_bar" /> 
</LinearLayout> 
     <LinearLayout 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_below="@id/askfatwa_header" 
      android:layout_marginLeft="15dp" 
      android:layout_marginRight="15dp" 
      android:layout_marginTop="5dp" 
      android:orientation="vertical" > 

      <TextView 
       android:id="@+id/name_askscreen" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:text="@string/name" 
       android:textColor="@android:color/white" 
       android:textSize="20sp" /> 

      <EditText 
       android:id="@+id/askscreen_name" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:layout_marginTop="3dp" 
       android:paddingLeft="5dp" 
       android:maxLines="1" 
       android:inputType="text" 

       android:background="@drawable/textfield" > 
      </EditText> 
     </LinearLayout> 

     <LinearLayout 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_marginLeft="15dp" 
      android:layout_marginRight="15dp" 
      android:layout_marginTop="5dp" 
      android:orientation="vertical" > 

      <TextView 
       android:id="@+id/email_askscreen" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 

       android:text="@string/Email" 
       android:textColor="@android:color/white" 
       android:textSize="20sp" /> 

      <EditText 
       android:id="@+id/askscreen_email" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:layout_marginTop="3dp" 
       android:maxLines="1" 
       android:inputType="textEmailAddress" 
        android:background="@drawable/textfield" 
       android:paddingLeft="5dp" /> 
     </LinearLayout> 

     <LinearLayout 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_marginLeft="15dp" 
      android:layout_marginRight="15dp" 
      android:layout_marginTop="5dp" 
      android:orientation="vertical" > 

      <TextView 
       android:id="@+id/address_askscreen" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 

       android:text="@string/Address" 
       android:textColor="@android:color/white" 
       android:textSize="20sp" /> 

      <EditText 
       android:id="@+id/askscreen_address" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:layout_marginTop="3dp" 
       android:paddingLeft="5dp" 
       android:inputType="textMultiLine" 

       android:background="@drawable/textfield" /> 
     </LinearLayout> 
     <!-- <LinearLayout 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_marginLeft="15dp" 
      android:layout_marginRight="15dp" 
      android:layout_marginTop="5dp" 
      android:orientation="vertical" > 

      <TextView 
       android:id="@+id/contact_askscreen" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:text="@string/Contact" 
       android:textColor="@android:color/white" 
       android:textSize="20sp" /> 

      <EditText 
       android:id="@+id/askscreen_contact" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:layout_marginTop="3dp" 
       android:paddingLeft="5dp" 
        android:background="@drawable/textfield" /> 
     </LinearLayout> --> 

     <LinearLayout 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_marginLeft="15dp" 
      android:layout_marginRight="15dp" 
      android:layout_marginTop="5dp" 
      android:orientation="vertical" > 

      <TextView 
       android:id="@+id/subject_askscreen" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:text="@string/Subject" 
       android:textColor="@android:color/white" 
       android:textSize="20sp" /> 

      <!-- <EditText 
       android:id="@+id/askscreen_subject" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:layout_marginTop="3dp" 
       android:paddingLeft="5dp" /> --> 
       <Spinner 
       android:id="@+id/askscreen_subject" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:layout_marginTop="3dp" 
       android:paddingLeft="5dp"/> 
     </LinearLayout> 
     <LinearLayout 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_marginLeft="15dp" 
      android:layout_marginRight="15dp" 
      android:layout_marginTop="5dp" 
      android:orientation="vertical" > 

      <!-- <TextView 
       android:id="@+id/body_askscreen" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:hint="Type Your Question" 
       android:textColor="@android:color/white" 
       android:textSize="20sp" /> --> 

      <EditText 
       android:id="@+id/askscreen_question" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:layout_marginTop="3dp" 
       android:background="@drawable/textfield" 
       android:hint="Type Your Question" 
       android:minLines="1" 
       android:inputType="textMultiLine" 
       android:minHeight="8dp" 
       android:minWidth="10dp" 
       android:lines="15" 
       android:paddingLeft="5dp" /> 

     </LinearLayout> 


     <ImageView 
      android:id="@+id/askscreen_submit_btn" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_gravity="center" 
      android:layout_marginTop="10dp" 
      android:paddingTop="20dp" 
      android:src="@drawable/askftwa_submit_button" /> 
    </LinearLayout> 

</ScrollView> 

Answer 1

添加更多元素並出現滾動條。現在所有的元素都在屏幕內裝修，這就是爲什麼你看不到任何滾動

Answer 2

First a fall by seeing your xml, you are creating very expensive layout containing 
unnecessarily many Linear layouts ie when orientation of your all views are vertical.  
Why are you defining your views like textbox and edittext in separate Linear Layouts, 
it creates performance issues. 

Secondly, you should not define set any background and orientation in scroll view. 
By default orientation of scroll view is vertical. 

Although i just run your code with few changes and its working fine on my emulator 
and on my device. 



<?xml version="1.0" encoding="utf-8"?> 
<ScrollView 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" > 

    // This is Main layout which contains all your child view 

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

    // Define your remaining child views here..... 
    // And as i can see all views are oriented vertically, so you can define all view 
     inside this Main Layout itself. 
    // Accordingly you can set Margins of your views too. 


    </LinearLayout> 

</ScrollView>