Exemple #1
0
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    if (getActionBar() != null) {
      getActionBar().setDisplayHomeAsUpEnabled(true);
    }
    String[] projection = new String[] {MediaStore.MediaColumns.DATA};
    mGalleryCursor =
        getContentResolver()
            .query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, null, null, null);

    mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);
    GridLayoutManager glm = new GridLayoutManager(this, COUNT_ITEMS_IN_LINE);
    mRecyclerView.setLayoutManager(glm);
    mRecyclerView.setAdapter(new MyRecyclerAdapter(this, mGalleryCursor, glm.getSpanCount()));
  }
  public void setLayoutManager(LayoutManager layoutManager) {
    super.setLayoutManager(layoutManager);
    if (mWrapperAdapter != null) {

      if (layoutManager instanceof GridLayoutManager) {
        GridLayoutManager gridLayoutManager = (GridLayoutManager) layoutManager;
        final int spanCount = gridLayoutManager.getSpanCount();
        gridLayoutManager.setSpanSizeLookup(
            new GridLayoutManager.SpanSizeLookup() {
              @Override
              public int getSpanSize(int position) {
                return (mWrapperAdapter.isHeader(position)
                            || mWrapperAdapter.isFooter(position)
                            || mWrapperAdapter.isLoadMoreView(position))
                        || mWrapperAdapter.isPullRefreshView(position)
                    ? spanCount
                    : 1;
              }
            });
      }
    }
  }