我想動態地在ListView中添加項目。
它每隔5秒檢查一次新條目並將其設置爲列表視圖。
這是我的代碼:
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();
}
}
我對這個說法得到一個例外:
lv.setAdapter((customAdapter));
我的例外是:
java.lang.IllegalStateException: Observer [email protected] was not registered.
以下是完整的日誌:
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)
請指導我解決這個問題。提前Thanx。
Expain你的答案是什麼。你做了什麼? – 2016-03-10 20:37:06
對不起,當我提出這個問題時,我是新的。我編輯了我的答案。請檢查。 – 2016-03-11 05:59:14
太棒了!現在它是有幫助的。謝謝。 – 2016-03-11 14:04:46