Non-scrollable ListView inside ScrollView

问题:

I'm trying to make a layout like this:

The problem is that I don't want the ListViews to be scrollable. I want them to be as much high as they need to and make the whole screen be scrollable. If I set the height of the ListView to wrap_content, that doesn't work. The only way to make it work is to set a specific height - but I don't know how many items will be in the ListView.

I know that I should not put ListView inside ScrollView - but I don't want the ListView to be scrollable, just to show all items.

Maybe there is a better way to make it work?

回答1:

You Create Custom ListView Which is non Scrollable

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();    
    }
}

In Your Layout Resources File

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fadingEdgeLength="0dp"
    android:fillViewport="true"
    android:overScrollMode="never"
    android:scrollbars="none" >

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

        <!-- com.Example Changed with your Package name -->

        <com.Example.NonScrollListView
            android:id="@+id/lv_nonscroll_list"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" >
        </com.Example.NonScrollListView>

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@+id/lv_nonscroll_list" >

            <!-- Your another layout in scroll view -->

        </RelativeLayout>
    </RelativeLayout>

</ScrollView>

In Java File

Create a object of your customListview instead of ListView like :
NonScrollListView non_scroll_list = (NonScrollListView) findViewById(R.id.lv_nonscroll_list);

回答2:

There is no need to use a listview at all.

If you really think about it, a listview can be replaced with a linearlayout in your case. The Adapter would be the same, however instead of attaching the adapter with your listview, simply call the getView function of the adapter in a for loop on your data and add the retrieved views to your vertical linearlayout.

However this approach is only recommended if you have a small number of items in your list and your display representation of those items is not memory intensive.

回答3:

The best way to do this (in 2017) is to use a RecyclerView with a NestedScrollView. No hacks required and it works out of the box like you want it to.

回答4:

Well, there is a cool Android guy named Mark Murphy a.k.a. CommonsWare and he built a very useful component named CWAC Merge Adapter that allows you to do what you need. You'll need to add the views dynamically and not from XML; but considering your simple UI, that shouldn't be a problem. I'm using it for these kind of cases when I have no idea on what kind of data I'm supposed to scroll.

If you don't want to use it (for licensing reasons maybe), you can have a single listview there (instead of those 2 consecutive list-views) and override getItemViewsCount, getItemViewType and getView in order to give above layout. If you search android listview different rows on Google you'll find useful info. For example this link, or this one.

However, I would go for merge-adapter.

回答5:

I have a easy solution if it's possible to calculate your item height/wide ... You just need to create a parent Linearlayout of ListView and then fixed parent Height from Java.

Suppose you need to design this view... Now Parent layout size is defining from java...

final LinearLayout parent=(LinearLayout)findViewById(R.id.parent);
final ListView  listview=(ListView)findViewById(R.id.listview);
parent.setLayoutParams(new LinearLayout.LayoutParams(parent.getLayoutParams().width, dpToPx( number_of_item_in_list * per_item_size_in_dp )));
//number_of_item_in_list is list side ~ listArray.size();
//per_item_size_in_dp = calculate item size in dp. Ex: 80dp

public static int dpToPx(int dp)
{
    return (int) (dp * Resources.getSystem().getDisplayMetrics().density);
}

that's all :)

回答6:

Choose the ListView that's you want to be Scrollable, and after that add the method 'setOnTouchListener' to automatically the system insert the scroll inside the ListView

final ListView listview = (ListView) findViewById(R.id.list);


    listview.setOnTouchListener(new ListView.OnTouchListener()
    {
        @Override
        public boolean onTouch(View v, MotionEvent event)
        {
            int action = event.getAction();
            switch (action)
            {
                case MotionEvent.ACTION_DOWN:
                    // Disallow ScrollView to intercept touch events.
                    v.getParent().requestDisallowInterceptTouchEvent(true);
                    break;

                case MotionEvent.ACTION_UP:
                    // Allow ScrollView to intercept touch events.
                    v.getParent().requestDisallowInterceptTouchEvent(false);
                    break;
            }

            // Handle ListView touch events.
            v.onTouchEvent(event);
            return true;
        }
    });
    listview.setClickable(true);

I hope that works for you