java - Scrollview XML 布局问题

Question

希望这是一个简单的。

我有一个使用滚动视图的布局。这很好，直到我想在它上面放一个图像和文本视图，然后在它下面放一个带有我的编辑文本的滚动视图。

目前我收到以下错误：

01-22 20:13:32.228: E/AndroidRuntime(275): FATAL EXCEPTION: main
01-22 20:13:32.228: E/AndroidRuntime(275): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.flybase2/com.example.flybase2.addAppointment}: java.lang.RuntimeException: Binary XML file line #26: You must supply a layout_width attribute.

我试图更改滚动视图宽度属性（我相信错误也指向）但没有运气。

这是我的 XML。谁能看到我做错了什么？：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="84dp"
    android:orientation="horizontal" >

    <ImageView
        android:id="@+id/imgLink"
        android:layout_width="78dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:src="@drawable/viewcon" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="match_parent"
        android:layout_height="75dp"
        android:gravity="center"
        android:text="Appointments"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:textSize="35sp" />
</LinearLayout>

\\ERROR: On width attribute
<ScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Name:"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<EditText
    android:id="@+id/inputAppName"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:ems="10" >

    <requestFocus />
</EditText>

<TextView
    android:id="@+id/textView2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Appointment Type:"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<Spinner
    android:id="@+id/spinner1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

<TextView
    android:id="@+id/textView3"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Appointment Time:"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<TimePicker
    android:id="@+id/timePicker1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

<TextView
    android:id="@+id/textView4"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Appointment Time:"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<DatePicker
    android:id="@+id/datePicker1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

<TextView
    android:id="@+id/textView5"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Comments:"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<EditText
    android:id="@+id/inputAppCom"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:ems="10" />

<TextView
    android:id="@+id/textView6"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Set Appointment Date Alarm:"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<ToggleButton
    android:id="@+id/toggleButton1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="ToggleButton"
    android:textOff="Alarm Off"
    android:textOn="Alarm On" />

<TextView
    android:id="@+id/textView7"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Add Appointment"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<Button
    android:id="@+id/btnAddAppointment"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Add" />

</ScrollView>
</LinearLayout>

编辑：

Answer 1

您只能将一个子布局设置为 ScrollView。我不知道为什么它显示你没有设置android:layout_width属性，但你的问题肯定是你的 ScrollView 中有多个子视图。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" 
android:orientation="vertical" >
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="84dp"
    android:orientation="horizontal" >

    <ImageView
        android:id="@+id/imgLink"
        android:layout_width="78dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:src="@drawable/viewcon" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="match_parent"
        android:layout_height="75dp"
        android:gravity="center"
        android:text="Appointments"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:textSize="35sp" />
</LinearLayout>

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


<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Name:"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<EditText
    android:id="@+id/inputAppName"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:ems="10" >

    <requestFocus />
</EditText>

<TextView
    android:id="@+id/textView2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Appointment Type:"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<Spinner
    android:id="@+id/spinner1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

<TextView
    android:id="@+id/textView3"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Appointment Time:"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<TimePicker
    android:id="@+id/timePicker1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

<TextView
    android:id="@+id/textView4"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Appointment Time:"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<DatePicker
    android:id="@+id/datePicker1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

<TextView
    android:id="@+id/textView5"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Comments:"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<EditText
    android:id="@+id/inputAppCom"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:ems="10" />

<TextView
    android:id="@+id/textView6"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Set Appointment Date Alarm:"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<ToggleButton
    android:id="@+id/toggleButton1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="ToggleButton"
    android:textOff="Alarm Off"
    android:textOn="Alarm On" />

<TextView
    android:id="@+id/textView7"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Add Appointment"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<Button
    android:id="@+id/btnAddAppointment"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Add" />

 </LinearLayout>
 </ScrollView>
 </LinearLayout>