@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;
}
});
}
}
}