Java 在聊天活动中滚动后,我在聊天中发送的图像会显示多次
我可以在对话中成功发送图像,但每当我滚动图像时,图像都会显示多次。我已成功从firebase检索图像的URL 这是我的Java 在聊天活动中滚动后,我在聊天中发送的图像会显示多次,java,android,android-recyclerview,picasso,Java,Android,Android Recyclerview,Picasso,我可以在对话中成功发送图像,但每当我滚动图像时,图像都会显示多次。我已成功从firebase检索图像的URL 这是我的RecyclerView的ViewHolder public class MessageViewHolder extends RecyclerView.ViewHolder { public TextView messageText; public CircleImageView profileImage; public TextView display
RecyclerView
的ViewHolder
public class MessageViewHolder extends RecyclerView.ViewHolder {
public TextView messageText;
public CircleImageView profileImage;
public TextView displayName;
public ImageView messageImage;
public TextView timeText;
public MessageViewHolder(View view) {
super(view);
timeText = view.findViewById(R.id.time_text_layout);
messageText = (TextView) view.findViewById(R.id.message_text_layout);
profileImage = (CircleImageView) view.findViewById(R.id.message_profile_layout);
// displayName = (TextView) view.findViewById(R.id.name_text_layout);
messageImage = (ImageView) view.findViewById(R.id.message_image_layout);
}
}
下面是我的适配器中的onBindViewHolder
和一些其他函数
@Override
public void onBindViewHolder(final MessageViewHolder viewHolder, int i) {
Messages c = mMessageList.get(i);
final String from_user = c.getFrom();
String message_type = c.getType();
mUserDatabase = FirebaseDatabase.getInstance().getReference().child("Users").child(from_user);
mUserDatabase.keepSynced(true);
mUserDatabase.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
// String name = dataSnapshot.child("name").getValue().toString();
String image = dataSnapshot.child("thumb_image").getValue().toString();
fuser = FirebaseAuth.getInstance().getCurrentUser();
if (!from_user.equals(fuser.getUid())) {
// viewHolder.displayName.setText(name);
Picasso.with(viewHolder.profileImage.getContext()).load(image)
.placeholder(R.drawable.default_avatar).into(viewHolder.profileImage);
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
if (message_type.equals("text")) {
// viewHolder.messageText.setText(View.VISIBLE);
viewHolder.messageText.setText(c.getMessage());
} else {
// viewHolder.messageText.setText(c.getMessage());
viewHolder.messageImage.setVisibility(View.VISIBLE);
Picasso.with(viewHolder.messageImage.getContext()).load(c.getMessage())
.placeholder(R.drawable.default_avatar).into(viewHolder.messageImage);
}
}
@Override
public int getItemCount() {
return mMessageList.size();
}
@Override
public int getItemViewType(int position) {
String fuser = FirebaseAuth.getInstance().getCurrentUser().getUid().toString();
if (mMessageList.get(position).getFrom().equals(fuser)) {
return MSG_TYPE_RIGHT;
} else {
return MSG_TYPE_LEFT;
}
}
我没有得到这个代码的任何错误。我已经尝试了所有方法,但无法阻止它多次显示图像。在您的
onBindViewHolder
功能中,我认为您缺少其他部分。您需要为RecyclerView
的每个项目正确放置配置文件图像,如下所示
if (!from_user.equals(fuser.getUid())) {
Picasso.with(viewHolder.profileImage.getContext()).load(image).placeholder(R.drawable.default_avatar).into(viewHolder.profileImage);
} else {
// Load the default avatar when the above condition fails.
Picasso.with(viewHolder.profileImage.getContext()).load(R.drawable.default_avatar).into(viewHolder.profileImage);
}
另一个类似的错误出现在代码的下面部分
if(message_type.equals("text")) {
// You need to set the visibility of the message image here as well
viewHolder.messageImage.setVisibility(View.GONE);
viewHolder.messageText.setText(c.getMessage());
} else {
viewHolder.messageImage.setVisibility(View.VISIBLE);
Picasso.with(viewHolder.messageImage.getContext()).load(c.getMessage()).placeholder(R.drawable.default_avatar).into(viewHolder.messageImage);
}
希望这能解决您的问题。欢迎使用StackOverflow。这个问题很好也很清楚。请检查我下面的答案,并让我知道这是否解决了您的问题。:)是的,它在工作。我以前也试过,但后来不起作用了。无论如何,谢谢你知道这有帮助真是太好了!如果有帮助,请接受答案。:)