我想动态地在ListView中添加项目。
它每隔5秒检查一次新条目并将其设置为列表视图。
这是我的代码:
public void T2TCheck(){
try {
Runnable runnable = new Runnable() {
@Override
public void run() {
List<MessageDB> messageDBList = MessageDB.find(MessageDB.class, "read = 0");
while (true) {
if (StaticMember.IS_ACTIVE) {
try {
for (int i = 0; i < messageDBList.size(); i++) {
list.add(new com.example.admin.chatsdk.Message("", messageDBList.get(i).getMessage(), "", messageDBList.get(i).getSent() + ""));
CustomAdapterM customAdapter = new CustomAdapterM(getApplicationContext(), android.R.layout.simple_list_item_1, list);
lv.setAdapter((customAdapter));
}
} catch (Exception e) { e.printStackTrace();}
}
try {
Thread.sleep(5000);
} catch (Exception e) { e.printStackTrace();}
}
}
};
Thread thread = new Thread(runnable);
thread.start();
} catch (Exception e) {
e.printStackTrace();
}
}
我对这个说法得到一个例外:
lv.setAdapter((customAdapter));
我的例外是:
java.lang.IllegalStateException: Observer [email protected] was not registered.
以下是完整的日志:
22/com.example.admin.chatsdk W/System.err﹕ java.lang.IllegalStateException: Observer [email protected] was not registered.
04-05 21:32:19.657 507-1222/com.example.admin.chatsdk W/System.err﹕ at android.database.Observable.unregisterObserver(Observable.java:69)
04-05 21:32:19.657 507-1222/com.example.admin.chatsdk W/System.err﹕ at android.widget.BaseAdapter.unregisterDataSetObserver(BaseAdapter.java:42)
04-05 21:32:19.657 507-1222/com.example.admin.chatsdk W/System.err﹕ at android.widget.ListView.setAdapter(ListView.java:459)
04-05 21:32:19.657 507-1222/com.example.admin.chatsdk W/System.err﹕ at com.example.admin.chatsdk.Messages$2.run(Messages.java:152)
04-05 21:32:19.657 507-1222/com.example.admin.chatsdk W/System.err﹕ at java.lang.Thread.run(Thread.java:841)
请指导我解决这个问题。提前Thanx。
Expain你的答案是什么。你做了什么? – 2016-03-10 20:37:06
对不起,当我提出这个问题时,我是新的。我编辑了我的答案。请检查。 – 2016-03-11 05:59:14
太棒了!现在它是有帮助的。谢谢。 – 2016-03-11 14:04:46