我使用FirebaseRecyciclerView创建了一个新闻源,但问题是它们一次加载了所有内容,并且滚动非常缓慢且滞后。我想添加部分加载和缓存。像Facebook,Twitter,Instagram等。我曾经尝试过Volley,但我无法弄清楚。有更多知识的人可以告诉我什么是解决我的问题的最佳方法。
我尝试了这个答案,但没有结果 Firebase load data dynamically on scrolling
private void DisplayAllUsersPosts()
{
Query SortPostsInDescendingOrder = PostsRef.orderByChild("counter");
FirebaseRecyclerAdapter<Posts, PostsViewHolder> firebaseRecyclerAdapter =
new FirebaseRecyclerAdapter<Posts, PostsViewHolder>
(
Posts.class,
R.layout.all_posts_layout,
PostsViewHolder.class,
SortPostsInDescendingOrder
)
{
@Override
protected void populateViewHolder(PostsViewHolder viewHolder, Posts model, int position)
{
final String PostKey = getRef(position).getKey();
viewHolder.setFullname(model.getFullname());
viewHolder.setTime(model.getTime());
viewHolder.setDate(model.getDate());
viewHolder.setDescription(model.getDescription());
viewHolder.setUser_thumb_image(getApplicationContext(), model.getUser_thumb_image());
viewHolder.setPostimage(getApplicationContext(), model.getPostimage());
viewHolder.setLikeButtonStatus(PostKey);
viewHolder.mView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent clickPostIntent = new Intent(MainActivity.this, ClickPostActivity.class);
clickPostIntent.putExtra("PostKey", PostKey);
startActivity(clickPostIntent);
}
});
viewHolder.CommentPostButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent commentsIntent = new Intent(MainActivity.this, CommentsActivity.class);
commentsIntent.putExtra("PostKey", PostKey);
startActivity(commentsIntent);
}
});
viewHolder.LikePostButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
LikeChecker = true;
LikesRef.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
if(LikeChecker.equals(true)){
if(dataSnapshot.child(PostKey).hasChild(currentUserID)){
LikesRef.child(PostKey).child(currentUserID).removeValue();
LikeChecker = false;
}else{
LikesRef.child(PostKey).child(currentUserID).setValue(true);
LikeChecker = false;
}
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
});
}
};
postList.setAdapter(firebaseRecyclerAdapter);
}