Android onResume ListView为空后

Question

我有一个ListView,onResume我试图填充SQL Lite数据库中的数据.在恢复期间,我添加了一个单击侦听器并重新填充列表视图.onResume,populateListView()和onPause方法如下所示.完整的源代码可以在GitHub上找到.

的onResume:

@Override
protected void onResume() {
    IntentFilter filter = new IntentFilter();
    filter.addAction(TalkServerIntent.INTENT_NEW_MESSAGES.toString());
    registerReceiver(receiver, filter);

    setContentView(R.layout.main);

    talkListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parentView, View childView,
                            int position, long id) {
            GeoCamTalkMessage msg = adapter.getTalkMessage(position);
            if (msg.hasAudio()) {
                try {
                    UIUtils.playAudio(getApplicationContext(), msg, player,
                            siteAuth);
                } catch (Exception e) {
                    UIUtils.displayException(getApplicationContext(), e,
                            "Cannot retrieve audio");
                }
            }
        }
    });

    populateListView();
    super.onResume();
}

populateListView:

private void populateListView() {
    try {
        talkMessages = messageStore.getAllMessages();
    } catch (Exception e) {
        Log.i("Talk", "Error:" + e.getMessage());
    }

    if (talkMessages != null) {
        adapter.setTalkMessages(talkMessages);
        talkListView.setAdapter(adapter);
    }
}

我没有对onPause做任何特别的事,但由于值存储在数据库中,所以我认为不必.

在onPause

@Override
protected void onPause() {
    unregisterReceiver(receiver);
    super.onPause();
}

我做错了什么导致ListView不能刷新onResume？

Answer 1

您可以尝试转到setContentView(R.layout.main);onCreate()方法.

onResume()每次设置都可能会导致问题.