0
當我使用這個RecyclerView有不同的佈局
@Override
public int getItemViewType(int position) {
return position;
}
我RecyclerView工作沒有問題 現在我想就可以使用多佈局我用這個
@Override
public int getItemViewType(int position) {
int type = -1;
if(mMessages.get(position).getDir().equals("left")) type = 1;
else if(mMessages.get(position).getDir().equals("right")) type = 0;
else if(mMessages.get(position).getDir().equals("typing")) type = 2;
return type;
//return position;
}
的問題，當我使用它和滾動到頂部和回到底部或滾動 其RecyclerView其重新訂購項目喜歡做它的第一個項目最後一個或中間或每一個不是我的正確位置
只是如果我回
getItemViewType第一代碼的工作，而 問題，但我不能使用多佈局
我完整的代碼
public class MessageAdapter1 extends RecyclerView.Adapter<MessageAdapter1.ViewHolder> {
private List<MessageList> mMessages;
private int[] mUsernameColors;
private Context context;
public MessageAdapter1(Context context, List<MessageList> messages) {
mMessages = messages;
this.context = context;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
int layout = -1;
switch (viewType) {
case 0:
layout = R.layout.right_message;
break;
case 1:
layout = R.layout.left_message;
break;
case 2:
layout = R.layout.message_left;
break;
}
View v = LayoutInflater.from(parent.getContext()).inflate(layout , parent, false);
return new ViewHolder(v);
}
@Override
public void onBindViewHolder(ViewHolder viewHolder, int position) {
MessageList message = mMessages.get(position);
//viewHolder.setMessage(message.getMessage());
//viewHolder.setUsername(message.getUsername());
viewHolder.setGroupMessage(message);
}
@Override
public int getItemCount() {
return mMessages.size();
}
@Override
public int getItemViewType(int position) {
int type = -1;
if(mMessages.get(position).getDir().equals("left")) type = 1;
else if(mMessages.get(position).getDir().equals("right")) type = 0;
else if(mMessages.get(position).getDir().equals("typing")) type = 2;
return type;
//return position;
}
public class ViewHolder extends RecyclerView.ViewHolder {
private LinearLayout groupMessage;
//private ImageView typing;
public ViewHolder(View itemView) {
super(itemView);
groupMessage = (LinearLayout)itemView.findViewById(R.id.messages);
}
public void setGroupMessage(MessageList m) {
if (null == groupMessage) return;
int i = 0;
if(m.getMessageStatus() == false){
m.setMessageStatus(true);
for (String message : m.getMessageList()) {
//TextView text = new TextView(activity);
TextView text = new MyTextView(context);
LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
p.setMargins(0, 0, 0, 2);
if (m.getDir().equals("left")) {
text.setTextColor(Color.BLACK);
p.gravity = Gravity.LEFT;
if(m.getMessageList().size() == 1){
text.setBackgroundResource(R.drawable.message_left_default);
}
else if (i == 0) {
text.setBackgroundResource(R.drawable.message_left_first);
} else if (i + 1 == m.getMessageList().size()) {
text.setBackgroundResource(R.drawable.message_left_last);
} else {
text.setBackgroundResource(R.drawable.message_left);
}
} else{
p.gravity = Gravity.RIGHT;
text.setTextColor(Color.WHITE);
if(m.getMessageList().size() == 1){
text.setBackgroundResource(R.drawable.message_right_default);
}
else if (i == 0) {
text.setBackgroundResource(R.drawable.message_right_first);
} else if (i + 1 == m.getMessageList().size()) {
text.setBackgroundResource(R.drawable.message_right_last);
} else {
text.setBackgroundResource(R.drawable.message_right);
}
}
text.setLayoutParams(p);
text.setText(message);
text.setPadding(8, 8, 8, 8);
text.setTextSize(18f);
//text.setTextAppearance(context, android.R.style.TextAppearance_Large);
groupMessage.addView(text);
i++;
}
}
}
}
}