我有一个android布局,其中有一个带有许多元素的scrollView。在scrollView的底部,我有一个listView,然后由适配器填充。

我遇到的问题是,android是排除listView从scrollView作为scrollView已经有一个可滚动的功能。我希望listView和内容一样长,并且主滚动视图是可滚动的。

我怎样才能实现这种行为呢?

这是我的主要布局:

<ScrollView
    android:id="@+id/scrollView1"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="2"
    android:fillViewport="true"
    android:gravity="top" >

    <LinearLayout
        android:id="@+id/foodItemActvity_linearLayout_fragments"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >
    </LinearLayout>

</ScrollView>

然后,我以编程方式将我的组件添加到linearlayour的id: foodItemActvity_linearLayout_fragments。下面是加载到线性布局中的一个视图。就是这个给我的卷轴带来了麻烦。

<?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="wrap_content"
    android:orientation="vertical" >

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

   <ListView
       android:id="@+id/fragment_dds_review_listView"
       android:layout_width="match_parent"
       android:layout_height="wrap_content">
   </ListView>
</LinearLayout>

我的适配器然后填充这个列表视图。

当我点击主scrollView时,这是一个来自android层级查看器的图像:

如您所见,它排除了评论列表视图。

我应该能够向下滚动页面,看到8个评论,但它只显示了这3个,我可以滚动评论所在的一小部分。我想要一个全局页面滚动


当前回答

listView.setOnTouchListener(new View.OnTouchListener() {

@Override
public boolean onTouch(View v, MotionEvent event) {
    scrollView.requestDisallowInterceptTouchEvent(true);

    int action = event.getActionMasked();

    switch (action) {
        case MotionEvent.ACTION_UP:
            scrollView.requestDisallowInterceptTouchEvent(false);
            break;
    }

    return false;
}
});

其他回答

好吧,这是我的答案。固定ListView高度的方法足够封闭,但并不完美。如果大多数项目都是相同的高度,那工作得很好。但如果不是,那就有大问题了。我尝试了很多次,当我输出listItem的值时。getMeasureHeight和listItem。getMeasuerWidth到日志中,我看到宽度值变化很大,这在这里是不期望的,因为同一ListView中的所有项应该具有相同的宽度。问题来了:

有些人使用度量(0,0),这实际上使视图在两个方向上都没有边界,宽度也失控了。有些人尝试获取listView的twidth,但它返回0,没有意义。

当我进一步了解android如何渲染视图时,我意识到所有这些尝试都无法达到我搜索的答案,除非这些函数在视图渲染后运行。

这一次我使用getViewTreeObserver在ListView上,我想固定高度,然后添加ongloballayoutlistener。在这个方法中,我声明了一个新的OnGlobalLayoutListener,在这个方法中,getWidth返回ListView的实际宽度。

private void getLayoutWidth(final ListView lv, final int pad){
        //final ArrayList<Integer> width = new ArrayList<Integer>();

        ViewTreeObserver vto = lv.getViewTreeObserver();
        vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                lv.getViewTreeObserver().removeOnGlobalLayoutListener(this);
                //width.add(layout.getMeasuredWidth());
                int width = lv.getMeasuredWidth();
                ListUtils.setDynamicHeight(lv, width, pad);
            }
        });
    }

public static class ListUtils {
        //private static final int UNBOUNDED = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
        public static void setDynamicHeight(ListView mListView, int width, int pad) {
            ListAdapter mListAdapter = mListView.getAdapter();
            mListView.getParent();
            if (mListAdapter == null) {
                // when adapter is null
                return;
            }
            int height = 0;


            int desiredWidth = View.MeasureSpec.makeMeasureSpec(width - 2*pad, View.MeasureSpec.EXACTLY);
            for (int i = 0; i < mListAdapter.getCount(); i++) {
                View listItem = mListAdapter.getView(i, null, mListView);

                listItem.measure(desiredWidth, View.MeasureSpec.UNSPECIFIED);
                //listItem.measure(UNBOUNDED, UNBOUNDED);
                height += listItem.getMeasuredHeight() + 2*pad;
                Log.v("ViewHeight :", mListAdapter.getClass().toString() + " " + listItem.getMeasuredHeight() + "--" + listItem.getMeasuredWidth());
            }
            ViewGroup.LayoutParams params = mListView.getLayoutParams();
            params.height = height + (mListView.getDividerHeight() * (mListAdapter.getCount() - 1));
            mListView.setLayoutParams(params);
            mListView.requestLayout();
        }
    }

value pad,是我在ListView layout中设置的填充。

我知道已经很长时间了,但我也有这个问题,尝试了这个解决方案,它是有效的。所以我想这对其他人也有帮助。

我添加android:fillViewport="true"的布局xml为scrollView。 总的来说,ScrollView是这样的。

<ScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/scrollView6" 
    android:fillViewport="true">

这对我来说就像魔法一样。 位于ScrollView内部的ListView再次扩展到它的大小。

下面是ScrollView和ListView的完整示例代码。

<ScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/scrollView6" android:fillViewport="true">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        ....
        <ListView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/lv_transList" android:layout_gravity="top"
            android:layout_marginTop="5dp"/>
        ....
    </LinearLayout>
</ScrollView>

你可以把所有东西都放到线性布局中。也就是说,创建线性布局,它将有两个子元素,scrollview和另一个线性布局。给他们布局权重,如下所示:

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

<ScrollView
    android:layout_width="fill_parent"
    android:layout_height="0dip" android:layout_weight="0.8">

    <LinearLayout
        android:id="@+id/seTaskActivityRoot"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@color/white"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="@string/taskName" />


        <Spinner
            android:id="@+id/seTaskPrioritiesSP"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1" />

        <TextView
            android:id="@+id/textView4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="@string/taskTargetInNumeric" />

        <Spinner
            android:id="@+id/seTaskUnitsSP"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1" />

        <TextView
            android:id="@+id/textView6"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="@string/newTaskCurrentStatus" />

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:ems="10"
            android:hint="@string/addTaskCurrentStatus"
            android:inputType="numberDecimal" />


    </LinearLayout>
</ScrollView>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="0dip"
    android:orientation="vertical" android:layout_weight="0.2">

    <TextView
        android:id="@+id/textView8"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView" />

    <ListView
        android:id="@+id/logList"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </ListView>

</LinearLayout>

对于任何子视图在ScrollView内滚动。ListView, RecyclerView,等等。你只需要用androidx.core.widget.NestedScrollView替换当前xml中的ScrollView,然后奇迹就发生了。

下面是一个示例xml代码:

<?xml version="1.0" encoding="utf-8"?>
<androidx.core.widget.NestedScrollView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.appcompat.widget.LinearLayoutCompat
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:padding="16dp"
        android:paddingBottom="20dp">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Recycler View inside a Scroll View"
            android:textColor="@color/black"
            android:textSize="@dimen/_20sp"
            android:textStyle="bold" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:text="Below is a Recycler View as an example."
            android:textSize="16sp" />

        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/recycler_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            app:layout_constraintTop_toBottomOf="@id/et_damaged_qty" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:text="This textview automatically goes below the Recycler View."
            android:textSize="16sp" />
    </androidx.appcompat.widget.LinearLayoutCompat>
</androidx.core.widget.NestedScrollView>

现在你可以摆脱所有丑陋的黑客,你做了围绕嵌套滚动。

It is not possible to use Scroll-view inside List-view as List-view already has scrolling property. To use list-view inside Scroll-view you can follow these steps which worked for me : 1) Create NonScrollListView java file that disable the default scrolling property of list-view. and code is below package your-package-structure; import android.content.Context; import android.util.AttributeSet; import android.view.ViewGroup; import android.widget.ListView; public class NonScrollListView extends ListView { public NonScrollListView(Context context) { super(context); } public NonScrollListView(Context context, AttributeSet attrs) { super(context, attrs); } public NonScrollListView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } @Override public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int heightMeasureSpec_custom = MeasureSpec.makeMeasureSpec( Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST); super.onMeasure(widthMeasureSpec, heightMeasureSpec_custom); ViewGroup.LayoutParams params = getLayoutParams(); params.height = getMeasuredHeight(); } } 2) Now create xml file which which has NestedScrollView and inside this use NonScrollListView for listing your items. This will make your entire screen to scroll with all the views. <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:orientation="vertical"> <ViewFlipper android:id="@+id/v_flipper" android:layout_width="match_parent" android:layout_height="130dp"> </ViewFlipper> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="SHOP" android:textSize="15dp" android:textStyle="bold" android:gravity="center" android:padding="5dp" android:layout_marginTop="15dp" android:layout_marginBottom="5dp" android:layout_marginLeft="8dp" android:layout_marginRight="8dp"/> <View android:layout_width="match_parent" android:layout_height="1dp" android:layout_marginBottom="8dp" android:layout_marginLeft="8dp" android:layout_marginRight="8dp" android:background="#ddd"/> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" android:layout_weight="1" > <com.abc.xyz.NonScrollListView android:id="@+id/listview" android:divider="@null" android:layout_width="match_parent" android:layout_marginBottom="10dp" android:layout_height="match_parent" android:padding="8dp"> </com.abc.xyz.NonScrollListView> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="bottom"> <include layout="@layout/footer" /> </LinearLayout> </LinearLayout> 3) Now in java class i.e, home.java define NonScrollListView instead of Listview. package comabc.xyz.landscapeapp; import android.content.Intent; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.os.Bundle; import android.support.v4.app.FragmentTransaction; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.Button; import android.widget.ImageView; import android.widget.ListView; import android.widget.Toast; import android.widget.Toolbar; import android.widget.ViewFlipper; public class home extends Fragment { int pos = 0; ViewFlipper v_flipper; @Nullable @Override public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view = inflater.inflate(R.layout.activity_home, container, false); return view; } @Override public void onViewCreated(@NonNull final View view, @Nullable Bundle savedInstanceState) { NonScrollListView listView = (NonScrollListView) view.findViewById(R.id.listview); customAdapter customAdapter = new customAdapter(getActivity()); listView.setAdapter(customAdapter); listView.setFocusable(false); customAdapter.notifyDataSetChanged(); listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Log.d("listview click", "onItemClick: "); /* FragmentTransaction fr = getFragmentManager().beginTransaction().replace(R.id.fragment_container, new productdisplay()); fr.putExtra("Position", position); fr.addToBackStack("tag"); fr.commit();*/ Intent intent = new Intent(getActivity(), productdisplay.class); intent.putExtra("Position", position); startActivity(intent); } }); //image slider int images[] = {R.drawable.slide1, R.drawable.slide2, R.drawable.slide3}; v_flipper = view.findViewById(R.id.v_flipper); for (int image : images) { flipperImages(image); } } private void flipperImages(int image) { ImageView imageView = new ImageView(getActivity()); imageView.setBackgroundResource(image); v_flipper.addView(imageView); v_flipper.setFlipInterval(4000); v_flipper.setAutoStart(true); v_flipper.setInAnimation(getActivity(), android.R.anim.slide_in_left); v_flipper.setOutAnimation(getActivity(), android.R.anim.slide_out_right); } } Note: I used Fragments here.