聊天listview的消息自动更新显示在最后一行

Posted 2020-09-08 Calo-missile

在调用xxxAdapter的notifyDataSetChanged()方法后

Data data = new Data(respose, Data.RECEIVE);
mDatas.add(data);
adapter.notifyDataSetChanged();
listView.setSelection(mDatas.size());//调用此方法即可

注意这里的xxxAdapter是继承(extends)ArrayAdapter<>的

如果是其他的xxxAdapter即继承（extends）BaseAdapter等则调用listView.setSelection(adapter.getCount()-1);

来自http://blog.csdn.net/xiaoluoli88/article/details/45336267的三个方法

Method1:

mListView.setTranscriptMode(ListView.TRANSCRIPT_MODE_ALWAYS_SCROLL);

Method2:

set this attribute in XML

[html] view plain copy

 

 

1. android:transcriptMode="alwaysScroll"  

Method3:

if the above two methods fail, you can try this:

you can manually tell the list to scroll to the bottom by setting the list selection to the last row.

private void scrollMyListViewToBottom() {
    myListView.post(new Runnable() {
        @Override
        public void run() {
            // Select the last row so it will scroll into view...
            myListView.setSelection(myListAdapter.getCount() - 1);
        }
    });
}