Android标题 - 如何使其保持在页面顶部而不是屏幕顶部？

Question

I made a nice android header. The only problem with it is that whenever the user scrolls down, the header follows the scroll. So the header ends up scrolling and remains on the screen.

What I want to happen is for it to stay glued to the very top of the page. Is that possible?

Here is my header:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" 
android:layout_height="fill_parent"
 android:orientation="horizontal"
>

    <!--     android:textColor="@color/white"
    -->

 <Button android:id="@+id/home_header"
  android:layout_width="0dp" 
  android:layout_height="wrap_content"
  android:layout_weight="1"
  android:textColor="@color/white"
  android:text="Home"
  android:background="@drawable/ic_menu"
  android:textSize="11dp"
/>

<Button android:id="@+id/businesses_header"
  android:layout_width="0dp" 
  android:layout_height="wrap_content"
  android:layout_weight="1"
  android:textSize="11dp"
  android:text="Businesses"
  android:textColor="@color/white"
    android:background="@drawable/ic_menu"
  android:layout_toRightOf="@+id/home_header"
 />   

 <Button android:id="@+id/learn_header"
  android:layout_width="0dp" 
  android:layout_height="wrap_content"
  android:layout_weight="1"
  android:text="Learn"
  android:textColor="@color/white"
  android:textSize="11dp"
  android:background="@drawable/ic_menu"
  android:layout_toRightOf="@+id/businesses_header"
 />   


<Button android:id="@+id/questions_header"
 android:layout_width="0dp" 
 android:layout_height="wrap_content"
 android:textColor="@color/white"
 android:layout_weight="1"
 android:text="Questions"
 android:textSize="11dp"
   android:background="@drawable/ic_menu"
android:layout_toRightOf="@+id/learn_header"  />  



 <Button android:id="@+id/extra_help_header"
  android:layout_width="0dp" 
  android:layout_height="wrap_content"
  android:layout_weight="1"
  android:textColor="@color/white"
  android:text="Premium"
  android:textSize="11dp"
  android:background="@drawable/ic_menu"
  android:layout_toRightOf="@+id/questions_header"
 />   
</LinearLayout>

Thank you

Answer 1

try this

<Button android:id="@+id/home_header"
  android:layout_width="0dp" 
  android:layout_height="wrap_content"
  android:layout_weight="1"
  android:textColor="@color/white"
  android:text="Home"
  android:background="@drawable/ic_menu"
  android:textSize="11dp"
/>

 <Button android:id="@+id/learn_header"
  android:layout_width="0dp" 
  android:layout_height="wrap_content"
  android:layout_weight="1"
  android:text="Learn"
  android:textColor="@color/white"
  android:textSize="11dp"
  android:background="@drawable/ic_menu"
  android:layout_toRightOf="@+id/businesses_header"
 />   


<Button android:id="@+id/questions_header"
 android:layout_width="0dp" 
 android:layout_height="wrap_content"
 android:textColor="@color/white"
 android:layout_weight="1"
 android:text="Questions"
 android:textSize="11dp"
   android:background="@drawable/ic_menu"
android:layout_toRightOf="@+id/learn_header"  />  



 <Button android:id="@+id/extra_help_header"
  android:layout_width="0dp" 
  android:layout_height="wrap_content"
  android:layout_weight="1"
  android:textColor="@color/white"
  android:text="Premium"
  android:textSize="11dp"
  android:background="@drawable/ic_menu"
  android:layout_toRightOf="@+id/questions_header"
 />   
 <ScrollView
        android:id="@+id/scrollView1"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >

        <LinearLayout
            android:id="@+id/Layout"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:orientation="vertical" >

Here add remaining part of the xml code

</LinearLayout>

Answer 2

The first thing you should do is change the height in your header to wrap_content:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"
    android:orientation="horizontal">

Then save the header layout in its own layout file (header.xml). Then use include statements whenever you want to use your header.

Here the header stays on top:

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

    <include android:id="+@id/header" layout="@layout/header" />

    <ScrollView
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">

        <LinearLayout
            android:id="+@id/content"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">
            <!-- put content here -->
        </LinearLayout>
    </ScrollView>
</LinearLayout>

Here it scrolls with the content:

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

            <include android:id="+@id/header" layout="@layout/header" />

            <!-- put content here -->
        </LinearLayout>
    </ScrollView>
</RelativeLayout>