Android StaggeredGrid RecyclerView 自动移动项目

Question

我正在尝试使用 Staggered Grid 显示任何图片，但也出现了很多问题。

首先，当我拉到顶部时，它会移动项目，例如从左到右，或者交换左右列。

参见下面的.gif:

我已经通过 Google 搜索了此问题的解决方案。我在我的项目中使用此代码:

StaggeredGridLayoutManager Layoutmanager = new StaggeredGridLayoutManager(3, OrientationHelper.VERTICAL);
manager.setGapStrategy(StaggeredGridLayoutManager.GAP_HANDLING_NONE);
recyclerView.setLayoutManager(manager);

recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
    @Override
    public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
        super.onScrollStateChanged(recyclerView, newState);
        ((StaggeredGridLayoutManager)recyclerView.getLayoutManager()).invalidateSpanAssignments();
    }
});

不幸的是，当我向上滚动时仍然出现严重问题。该项目仍然会移动，并且即使我只是滚动一小会儿，它也会滚动很远。

参见下面的.gif:

我该如何处理这些问题，或者以其他方式达到这个效果？

主要 Activity :

public class MainActivity extends AppCompatActivity {

private DrawerLayout mDrawerLayout;

private photos[] photoses = {
        new photos("Tags:",R.drawable.timg),
        new photos("Tags:",R.drawable.timg1),
        new photos("Tags:",R.drawable.timg2),
        new photos("Tags:",R.drawable.timg3),
        new photos("Tags:",R.drawable.timg4),
        new photos("Tags:",R.drawable.timg5),
        new photos("Tags:",R.drawable.timg6),
        new photos("Tags:",R.drawable.timg7),
        new photos("Tags:",R.drawable.timg8),
        new photos("Tags:",R.drawable.timg9),
        new photos("Tags:",R.drawable.timg10),
        new photos("Tags:",R.drawable.timg11),
        new photos("Tags:",R.drawable.timg12),
};

private List<photos> photosList = new ArrayList<>();

private photoAdapter adapter;

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.toolbar,menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()){
        case android.R.id.home:
            mDrawerLayout.openDrawer(GravityCompat.START);
            break;
        case R.id.edit_bar:
            Toast.makeText(this,"edit",Toast.LENGTH_SHORT).show();
            break;
        case R.id.search_bar:
            Toast.makeText(this,"search",Toast.LENGTH_SHORT).show();
            break;
        default:break;
    }
    return true;
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
    ActionBar actionBar = getSupportActionBar();
    if (actionBar!=null){
        actionBar.setDisplayHomeAsUpEnabled(true);
        actionBar.setHomeAsUpIndicator(R.drawable.homemenu);
    }
    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view,"Hello World",Snackbar.LENGTH_SHORT).show();
        }
    });
    initPhotos();
    RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
    final StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(3,StaggeredGridLayoutManager.VERTICAL);
    recyclerView.setLayoutManager(layoutManager);
    adapter = new photoAdapter(photosList);
    recyclerView.setAdapter(adapter);
}

private void initPhotos() {
    photosList.clear();
    for (int i = 0;i<100;i++){
        Random random = new Random();
        int index = random.nextInt(photoses.length);
        photosList.add(photoses[index]);
    }
}
}

照片适配器:

public class photoAdapter extends RecyclerView.Adapter<photoAdapter.ViewHolder> {

private Context mcontext;

private List<Integer> mHeights;

private List<photos> mPhotoList;

static class ViewHolder extends RecyclerView.ViewHolder{
    CardView cardView;
    ImageView photoView;
    TextView photoTag;

    public ViewHolder(View view){
        super(view);
        cardView = (CardView) view;
        photoView = (ImageView) view.findViewById(R.id.photo_view);
        photoTag = (TextView) view.findViewById(R.id.photo_tag);
    }
}

public photoAdapter(List<photos> photoList){
    mPhotoList = photoList;
}


@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    if (mcontext==null){
        mcontext = parent.getContext();
    }
    View view = LayoutInflater.from(mcontext).inflate(R.layout.photo_item,parent,false);
    return new ViewHolder(view);
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    photos photo = mPhotoList.get(position);
    holder.photoTag.setText(photo.getTag());
    Glide.with(mcontext).load(photo.getImageId()).into(holder.photoView);
}

@Override
public int getItemCount() {
    return mPhotoList.size();
}
}

Answer 1

来自 Android 文档

Staggered grids are likely to have gaps at the edges of the layout. Toavoid these gaps, StaggeredGridLayoutManager can offset spansindependently or move items between spans. You can control thisbehavior via setGapStrategy(int)

引用: https://developer.android.com/reference/android/support/v7/widget/StaggeredGridLayoutManager.html

https://stackoverflow.com/a/34274327/3701433