Question

I m trying to make an Android layout: 3 components inside a vertical LinearLayout. The center component is a ScrollView that contains a TextView. When the TextView contains a significant amount of text (more than can fit on the screen), the ScrollView grows all the way to the bottom of the screen, shows scrollbars, and pushes the last component, a LinearLayout with a Button inside, off the screen.

If the text inside the TextView inside the ScrollView is short enough, the button at the bottom of the screen is positioned perfectly.

The layout I m trying to achieve is:

The XML for thepuout I ve written is:

<?xml version="1.0" encoding="UTF-8"?>

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

    <TextView android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="#FFFFFF"
            android:layout_marginLeft="10dip"
            android:layout_marginRight="10dip"
            android:layout_marginTop="10dip"
            android:layout_marginBottom="10dip"
            android:text="Title />

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

        <TextView android:id="@+id/text"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:autoLink="web"
                android:textColor="#FFFFFF"
                android:background="#444444"
                android:padding="10dip" />

    </ScrollView>

    <LinearLayout
            android:orientation="horizontal"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="1">

        <LinearLayout
                android:orientation="horizontal"
                android:layout_width="0dip"
                android:layout_height="wrap_content"
                android:layout_weight="1"/>

        <Button android:id="@+id/login_button"
                android:layout_width="0dip"
                android:layout_height="wrap_content"
                android:layout_gravity="bottom"
                android:layout_weight="1"
                android:text="@string/next_button"/>

    </LinearLayout>

</LinearLayout>

Answer 1

滚动表是第二个观点标的,它要总结——内容超过屏幕。

我建议采取相对办法。 Top textview first with android:alignParentTop=“true”, the past LinearLayout next with android:alignParentBottom=“true”, and the scrollview listed final in the xml with the Valuecode 。

This will align the bottom bar at the bottom of the screen, and the header at the top, no matter the size. Then the scrollview will have its own place, after the header and footer have been placed.

Answer 2

您应接任亲属 Layout,而不是 LinearLayout。你们可以使用像包贝罗和所有这样的一些财产。

Answer 3

Try adding a layout weight into the ScrollView ie.

<ScrollView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1">

这对我的工作几乎与你再次介绍的情况相同,但让我怀疑,为什么,因为把控制权的排位权从0(如果你没有具体说明<条码>下限——重量/代码>)增加到1,就应当进行控制,而这种控制已经使用的空间太小。

我怀疑其原因,即没有具体说明排他性——实际上允许排他性地无视与其他控制相比的滚动观点的规模,反之,如果你具体说明允许它按照你所分配的权重来缩小这一范围。

Answer 4

! [Fixed Header-Footer and scrollable 身体布局?

This is what you are looking for . Most of the app in android had this type of layout , a fixed header and footer and a scrollable body . The xml for this layout is

<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
        android:background="#5599DD"
        android:layout_height="fill_parent">
        <!-- Header goes here -->
       <TextView 
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="#FFFFFF"
            android:layout_marginLeft="10dip"
            android:layout_marginRight="10dip"
            android:layout_marginTop="10dip"
            android:layout_marginBottom="10dip"
            android:textSize="20sp"
            android:layout_gravity="center"
            android:text="Title" />
       <!-- Body goes here -->
        <ScrollView
            android:layout_weight="1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content">
            <TextView 
                android:id="@+id/text"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:autoLink="web"
                android:text="@string/lorem_ipsum"
                android:textColor="#FFFFFF"

                android:padding="10dip" />
        </ScrollView>
        <!-- footer goes here -->
        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content">
            <RelativeLayout
                android:layout_width="fill_parent"
                android:layout_height="fill_parent">
                <Button 
                    android:id="@+id/login_button"
                    android:layout_height="wrap_content"
                    android:layout_width="wrap_content"
                    android:layout_gravity="bottom"
                    android:layout_alignParentRight="true"
                    android:text="Button"/>

            </RelativeLayout>
     </LinearLayout>
</LinearLayout>

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