是否可以禁用listView上的滚动？

Question

我动态地向a添加项目,ListView并希望使所有项目始终可见,而无需滚动.

布局代码:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/recipe_inside"
android:orientation="vertical" >

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

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

        <ImageView
            android:id="@+id/imageView1"
            android:layout_width="match_parent"
            android:layout_height="16dp"
            android:src="@drawable/head_cella" />

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="41dp"
            android:background="@drawable/body_cella"
            android:gravity="center_horizontal"
            android:paddingTop="5dp"
            android:text="Remember to save before leaving this page or inserted/modified data will be lost."
            android:textColor="#000000"
            android:textSize="13dp" />

        <ImageView
            android:id="@+id/ImageView01"
            android:layout_width="match_parent"
            android:layout_height="16dp"
            android:layout_marginTop="30dp"
            android:src="@drawable/head_cella" />

        <TextView
            android:id="@+id/TextView01"
            android:layout_width="wrap_content"
            android:layout_height="35dp"
            android:background="@drawable/body_cella"
            android:gravity="center_horizontal"
            android:paddingTop="10dp"
            android:text="Category"
            android:textColor="#000000"
            android:textSize="15dp" />

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

        <ImageView
            android:id="@+id/ImageView02"
            android:layout_width="match_parent"
            android:layout_height="16dp"
            android:layout_marginTop="30dp"
            android:src="@drawable/head_cella" />

        <TextView
            android:id="@+id/TextView02"
            android:layout_width="wrap_content"
            android:layout_height="35dp"
            android:background="@drawable/body_cella"
            android:gravity="center_horizontal"
            android:paddingTop="10dp"
            android:text="Name"
            android:textColor="#000000"
            android:textSize="15dp" />

        <EditText
            android:id="@+id/recipe_title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:ems="10"
            android:hint="Recipe title" android:lines="1"/>

        <ImageView
            android:id="@+id/ImageView03"
            android:layout_width="match_parent"
            android:layout_height="16dp"
            android:layout_marginTop="30dp"
            android:src="@drawable/head_cella" />

        <TextView
            android:id="@+id/TextView03"
            android:layout_width="wrap_content"
            android:layout_height="35dp"
            android:background="@drawable/body_cella"
            android:gravity="center_horizontal"
            android:paddingTop="10dp"
            android:text="Ingredients"
            android:textColor="#000000"
            android:textSize="15dp" />
         <ListView
            android:id="@android:id/list"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1" android:cacheColorHint="#00000000" android:divider="#00000000"
            android:isScrollContainer="false"
            >
       </ListView>

         <Button
             android:id="@+id/button_ing"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:text="" android:background="@drawable/add_recipe_button" android:onClick="addItems"/>

    </LinearLayout>

</ScrollView></LinearLayout>

旧的OnCreate()函数代码:

protected void onCreate(Bundle savedInstanceState)
{

    super.onCreate(savedInstanceState);

    setContentView(R.layout.add_recipe_form);

    spinner = (Spinner)myhead.findViewById(R.id.category_spinner);

    Cursor cursor = mydb.getCategoriesList();
    ArrayList<Category> list = new ArrayList<Category>();
    list.add(new Category(0,"Choose a category"));

    while (cursor.moveToNext()) {
        list.add(new Category(cursor.getInt(0),cursor.getString(1))); 
    }
    // Step 2: Create and fill an ArrayAdapter with a bunch of "State" objects
    ArrayAdapter spinnerArrayAdapter = new ArrayAdapter(this,android.R.layout.simple_spinner_item, list);

    // Step 3: Tell the spinner about our adapter
    spinner.setAdapter(spinnerArrayAdapter);   
    spinner.setOnItemSelectedListener(this);


    setListAdapter(adapter);
    ingredients.add((View)findViewById(R.layout.row_add_recipe));
    adapter.notifyDataSetChanged();
}

如果我移动与使用数据库数据填充我的微调器相关的代码,它总是返回一个NullPointerException,因为它在我的布局中找不到.所以我需要把它保留在这里,将addHeaderView()添加到我的ListView的解决方案似乎没问题,但是我的头部布局有另外一个NullPointerException:

protected void onCreate(Bundle savedInstanceState)
{

    super.onCreate(savedInstanceState);

    setContentView(R.layout.add_recipe_form);
    ListView mylistview = (ListView) findViewById(android.R.id.list);
    LinearLayout myhead = (LinearLayout)findViewById(R.id.linear_form);
    mylistview.addHeaderView(myhead);
    spinner = (Spinner)myhead.findViewById(R.id.category_spinner);

    Cursor cursor = mydb.getCategoriesList();
    ArrayList<Category> list = new ArrayList<Category>();
    list.add(new Category(0,"Choose a category"));

    while (cursor.moveToNext()) {
        list.add(new Category(cursor.getInt(0),cursor.getString(1))); 
    }
    // Step 2: Create and fill an ArrayAdapter with a bunch of "State" objects
    ArrayAdapter spinnerArrayAdapter = new ArrayAdapter(this,android.R.layout.simple_spinner_item, list);

    // Step 3: Tell the spinner about our adapter
    spinner.setAdapter(spinnerArrayAdapter);   
    spinner.setOnItemSelectedListener(this);


    setListAdapter(adapter);
    ingredients.add((View)findViewById(R.layout.row_add_recipe));
    adapter.notifyDataSetChanged();
}

Answer 1

如果我很理解你，你只需要一些可以与列表视图一起滚动的视图。实现它的最佳方法是addHeaderView()在addFooterView()您的ListView().

编辑：

我想事情应该是这样的：

@Override
public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.your_main_layout);
    LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View header = inflater.inflate(R.layout.your_header_layout); //R.layout, not R.id!

    (ListView) list = findViewById(android.R.list);
    list.addHeaderView(header);

    list.setAdapter(adapter); //according to docs you should call setAdapter() after addHeaderView()

    //to get the spinner
    (Spinner) spinner = (Spinner) header.findViewById(R.id.spinner);

}

我是凭记忆写的，没有测试过，但我认为它应该有效。当你有时间的时候尝试一下。