Question

我有一个ListView的自定义适配器 getView方法是这样的：

public View getView(int position, View convertView, ViewGroup parent)
    {
        //final ILSpeechBubble speechBubble;

        if(convertView == null)
        {
            inflater = context.getLayoutInflater();
            if(m_msg.get(position).Recieved == 0)
            {
                convertView = inflater.inflate(R.layout.text_message_sent_row_template, null);

                holder = new ViewHolder();
                holder.spBubble = (ILSpeechBubble) convertView.findViewById(R.id.iLSpeechBubble1);

                holder.imgProfilePic = (ImageView) convertView.findViewById(R.id.imgProfilePic);
                holder.imgSend = (ImageView) convertView.findViewById(R.id.imgMessageSent);

                holder.imgDeliverd = (ImageView) convertView.findViewById(R.id.imgMessageDeliverd);
                holder.pbSending = (ProgressBar) convertView.findViewById(R.id.pbSendingMessage);

                holder.spBubble.isChache = false;
                holder.Position = position;
                convertView.setTag(holder);
                m_ViewHolder.add(holder);
            }
            else
            {
                convertView = inflater.inflate(R.layout.text_message_recieved_row_template, null);

                holder = new ViewHolder();
                holder.spBubble = (ILSpeechBubble) convertView.findViewById(R.id.iLSpeechBubble1);
                holder.imgProfilePic = (ImageView) convertView.findViewById(R.id.imgProfilePic);
                holder.spBubble.isChache = false;
                holder.Position = position;
                convertView.setTag(holder);
                m_ViewHolder.add(holder);
            }
        }
        else
        {
            holder = (ViewHolder) convertView.getTag();
            if(holder.Position == position)
                Log.i("View Holder","Position : " + position);
            Log.i("View Holder","Position : " + position + " Wrong");
            Log.i("View Holder","Position : " + holder.Position + " HolderPos");
            //position = holder.Position;
            holder = findHolder(position);
            if(holder == null)
            {
                if(m_msg.get(position).Recieved == 0)
                {
                    convertView = inflater.inflate(R.layout.text_message_sent_row_template, null);

                    holder = new ViewHolder();
                    holder.spBubble = (ILSpeechBubble) convertView.findViewById(R.id.iLSpeechBubble1);

                    holder.imgProfilePic = (ImageView) convertView.findViewById(R.id.imgProfilePic);
                    holder.imgSend = (ImageView) convertView.findViewById(R.id.imgMessageSent);

                    holder.imgDeliverd = (ImageView) convertView.findViewById(R.id.imgMessageDeliverd);
                    holder.pbSending = (ProgressBar) convertView.findViewById(R.id.pbSendingMessage);

                    holder.spBubble.isChache = false;
                    holder.Position = position;
                    convertView.setTag(holder);
                    m_ViewHolder.add(holder);
                }
                else
                {
                    convertView = inflater.inflate(R.layout.text_message_recieved_row_template, null);

                    holder = new ViewHolder();
                    holder.spBubble = (ILSpeechBubble) convertView.findViewById(R.id.iLSpeechBubble1);
                    holder.imgProfilePic = (ImageView) convertView.findViewById(R.id.imgProfilePic);
                    holder.spBubble.isChache = false;
                    holder.Position = position;
                    convertView.setTag(holder);
                    m_ViewHolder.add(holder);
                }
            }

            Log.i("View Holder","Position After Find : " + position + " Wrong");
            Log.i("View Holder","Position After Find : " + holder.Position + " HolderPos");

            holder.spBubble.isChache = true;

            //return v;
        }

        if(m_msg.get(position).Recieved == 0)
        {
            holder.spBubble.setBubbleDirectionLeft(false);
            //speechBubble.setBubbleDirectionLeft(false);
            holder.spBubble.setTextAlign(Align.RIGHT);

            if (m_msg.get(position).Deliverd == 1)
            {
                holder.imgDeliverd.setVisibility(View.VISIBLE);
                holder.imgDeliverd.setImageResource(R.drawable.message_deliverd);
                holder.imgSend.setVisibility(View.GONE);
                holder.pbSending.setVisibility(View.GONE);
            }
            else if (m_msg.get(position).Sent == 1)
            {
                holder.imgDeliverd.setVisibility(View.GONE);
                holder.imgSend.setVisibility(View.VISIBLE);
                holder.imgSend.setImageResource(R.drawable.message_sent);
                holder.pbSending.setVisibility(View.GONE);
            }
        }
        else
        {
            holder.spBubble.setBubbleDirectionLeft(true);
            holder.spBubble.setTextAlign(Align.RIGHT);
        }

        CContacts_Info contact = cl_ContactInfo.GetContact(m_ContactILId);

        holder.spBubble.setMessageBody(m_msg.get(position).MessageBody);

        if(m_msg.get(position).MessageType.equals(AttachType.Emoji.name()))
            holder.spBubble.setEmojiList(m_EmojiList);
        else if(m_msg.get(position).MessageType.equals(AttachType.Picture.name()))
        {
            holder.spBubble.setImageSize(128, 128);
            holder.spBubble.setImageReadyState(m_msgList.get(position).isImageReady);
            if(m_msgList.get(position).isImageReady)
                holder.spBubble.setPictureMessageThumbPic(m_msgList.get(position).ThumbPic);
        }

        holder.spBubble.setVisibility(View.VISIBLE);
        holder.spBubble.setTextColor(Color.WHITE);
        holder.spBubble.setFontSize(m_Default_FontSize);

        holder.spBubble.setMessageId(m_msg.get(position)._id);

        if (m_msg.get(position)._id == iMessageId)
        {
            if (m_msg.get(position).iProgressValue == 100)
                m_Downloading = false;
            else
                m_msg.get(position).iProgressValue += 10;

            holder.spBubble.SetProgress(m_msg.get(position).iProgressValue);
        }
        else
            holder.spBubble.SetProgress(100);

        //ImageView imgProfilePic = (ImageView) convertView.findViewById(R.id.imgProfilePic);
        //holder.imgProfilePic.setPadding(0, holder.spBubble.getHeight(), 0, 0);

        if(contact.ProfilePic != null)
        {
            Bitmap bitmap = BitmapFactory.decodeByteArray(contact.ProfilePic, 0,
                    contact.ProfilePic.length,m_BitmapOPT);

            holder.imgProfilePic.setImageBitmap(bitmap);
        }
        else
        {
            holder.imgProfilePic.setImageResource(R.drawable.profile_pic);
        }

        if (m_isStop)
        {
            holder.spBubble.setVoiceMessage_Play(false);
            holder.spBubble.invalidate();
            m_isStop = false;
        }

        if (m_Playing)
            UpdateTimer(holder.spBubble);

        // UpdateTimer(holder.spBubble);

        holder.spBubble.setOnClickListener(new OnClickListener()
        {

            @Override
            public void onClick(View v)
            {
                String messageType = m_msg.get(holder.Position).MessageType;
                if (messageType.equals(AttachType.VoiceMessage.name()))
                {
                    if (m_Playing)
                    {
                        stopPlaying();

                        holder.spBubble.setVoiceMessage_Play(false);
                        holder.spBubble.invalidate();
                    }
                    else
                    {
                        String source = holder.spBubble.getAttachSource();
                        // Toast.makeText(Message_Activity.this, source,
                        // 1000).show();

                        startPlaying(source);
                        ShowNotify(R.string.VoiceMessage_Play_Title);

                        update_Timer.run();

                    }
                }
                else if (messageType.equals(AttachType.Audio.name()))
                {
                    if (holder.spBubble.getProgress() < 100)
                        return;
                    String source = holder.spBubble.getAttachSource();
                    Intent intent = new Intent();
                    intent.setAction(android.content.Intent.ACTION_VIEW);
                    File file = new File(source);
                    intent.setDataAndType(Uri.fromFile(file), "audio/*");
                    startActivity(intent);
                }
                else if (messageType.equals(AttachType.Video.name()))
                {
                    if (holder.spBubble.getProgress() < 100)
                        return;
                    String source = holder.spBubble.getAttachSource();
                    Intent intent = new Intent(Intent.ACTION_VIEW);
                    intent.setDataAndType(Uri.parse(source), "video/*");
                    startActivity(intent);
                }
                else if (messageType.equals(AttachType.Picture.name()))
                {
                    String source = holder.spBubble.getAttachSource();
                    Intent intent = new Intent();
                    intent.setAction(Intent.ACTION_VIEW);
                    intent.setDataAndType(Uri.parse("file:///" + source), "image/*");
                    startActivity(intent);
                }   
            }
        });

        holder.spBubble.setOnLongClickListener(new OnLongClickListener()
        {

            @Override
            public boolean onLongClick(View v)
            {

                List<Action_Type> actionList = CreatePopUpMenuList_Message(m_msg.get(holder.Position)._id);
                ListView lstPopUpAction = (ListView) m_PopUpDialog.findViewById(R.id.listView1);

                lstPopUpAction.setAdapter(new Show_Action_Adapter(Message_Activity.this,
                        actionList));

                m_PopUpDialog.show();
                return true;
            }
        });

        holder.spBubble.invalidate();

        //convertView.setTag(holder);

        return convertView;
    }

但滚动后在listView中显示的项目是错误的，有时会重复项目，有时会显示错误的顺序以显示列表项目我将if / else之后的item值设置为查看，但问题没有解决！如果我再次创建视图而不是用于缓存convertView（意味着：

if（convertView == null

该项目正确显示，但如果滚动到应用程序崩溃，以获得太多内存我完全糊涂了，不知道怎么解决它。

Answer 1

尝试在getView中实例化你的holder类（我看不到你在哪里实例化它）

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder;

然后确保您的ViewHolder类是静态的，并检查您的getCount（）方法以返回正确的列表大小。

在自定义ListView适配器中获取错误的项目

1 个答案: