Horizontal RecyclerView follows first item height with wrap_content

问题

I have a RecyclerView with a horizontal layout. The height of the individual adapter items can depend on the content of the item.

So in theory it can look like the following:

The problem I have now is that it wrap_content only seems to care about the height of the first problem, because the result I am getting looks like this:

Where as you can see that the 4th item gets cut off. However, it works perfectly if I put the tallest item first.

And to get rid of the obvious solution; I don't know the height of the items. I could only do that during testing.

adapter_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="100dp"
    android:layout_height="wrap_content"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:animateLayoutChanges="true"
    android:padding="@dimen/padding_view_small">

    <ImageView
        android:id="@+id/image"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_gravity="center_horizontal"
        app:srcCompat="@drawable/flamme"/>

    <TextView
        android:id="@+id/name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textColor="@color/black"
        android:layout_marginTop="@dimen/padding_view_small"
        android:text="@string/placeholder"
        android:gravity="center_horizontal"/>

</LinearLayout>

parent.xml

<LinearLayout
    android:id="@+id/symbol_list_parent"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:background="@drawable/container_content"
    android:padding="@dimen/padding_view_normal">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/symbol_list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"/>

</LinearLayout>

Activity.java

...
final ProductPictogramAdapter symbolAdapter = new ProductPictogramAdapter();
final View symbolListParent = findViewById(R.id.symbol_list_parent);
RecyclerView symbolList = findViewById(R.id.symbol_list);
symbolList.setLayoutManager(new LinearLayoutManager(ProductDetailActivity.this, LinearLayoutManager.HORIZONTAL, false));
symbolList.setAdapter(symbolAdapter);
symbolList.setHasFixedSize(true);

回答1:

change your imageview height as wrap_content. I'm not sure, try like that.

回答2:

Try this. Anyway, did you solve your problem?

mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
    @Override
    public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
        super.onScrollStateChanged(recyclerView, newState);
        final int newHeight = recyclerView.getMeasuredHeight();
        if (0 != newHeight && minHeight < newHeight) {
        // keep track the height and prevent recycler view optimizing by resizing
            minHeight = newHeight;
            recyclerView.setMinimumHeight(minHeight);
        }
    }
});

来源：https://stackoverflow.com/questions/51325075/horizontal-recyclerview-follows-first-item-height-with-wrap-content

标签

android

android-recyclerview