标签：location oca rri ase replace span count() android log
Android.support.v7.widget.RecyclerView$ViewHolder.mItemViewType‘ on a null..空指针问题，费劲心思才找到报空指针的原因：
代码是这样的，有多种布局类型
@Override public int getItemViewType(int position) { BmobIMMessage message = msgs.get(position); if(message.getMsgType().equals(BmobIMMessageType.IMAGE.getType())){ return message.getFromId().equals(currentUid) ? TYPE_SEND_IMAGE: TYPE_RECEIVER_IMAGE; }else if(message.getMsgType().equals(BmobIMMessageType.LOCATION.getType())){ return message.getFromId().equals(currentUid) ? TYPE_SEND_LOCATION: TYPE_RECEIVER_LOCATION; }else if(message.getMsgType().equals(BmobIMMessageType.VOICE.getType())){ return message.getFromId().equals(currentUid) ? TYPE_SEND_VOICE: TYPE_RECEIVER_VOICE; }else if(message.getMsgType().equals(BmobIMMessageType.TEXT.getType())){ return message.getFromId().equals(currentUid) ? TYPE_SEND_TXT: TYPE_RECEIVER_TXT; }else if(message.getMsgType().equals(BmobIMMessageType.VIDEO.getType())){ return message.getFromId().equals(currentUid) ? TYPE_SEND_VIDEO: TYPE_RECEIVER_VIDEO; }else if(message.getMsgType().equals("agree")) {//显示欢迎 return TYPE_AGREE; }else{ // return -1; return TYPE_AGREE; }
然后这是
getItemCount()
@Override public int getItemCount() { return msgs.size(); }
最后发现是因为itemCount与viewType不匹配导致的
例如：
recyclerview总共有6种类型，现在只写了一种类型测试，其他的都没有些，才导致报空，然后在getItemCount中return 1; 就ok了
int android.support.v7.widget.RecyclerView$ViewHolder.mItemViewType' on a null.....
标签：location oca rri ase replace span count() android log
原文地址：http://www.cnblogs.com/zhujiabin/p/7181842.html
