Android 数据库未更新或删除

发布于 2024-11-18 07:53:49 字数 739 浏览 7 评论 0原文

所以基本上我的数据库工作了一段时间（虽然非常小故障，基本上必须重新启动我的应用程序才能看到列表视图中的更改）。

这是一个由两部分组成的问题：

我使用自定义适配器并用于

ea.notifyDataSetChanged();

尝试更新我的适配器。但我认为问题在于数组也没有更新。

List<String> rList = db.selectAllReceive();
    receiveMessages = rList.toArray(new String[rList.size()]);

我应该只更新适配器内的数组吗？

第二部分：

db.delete(clicked);
        Toast.makeText(getBaseContext(), "Deleted Row: " + clicked, Toast.LENGTH_SHORT);
        Log.i("ContextMenu", "[MainAct.Class] Clicked DELETE");
        ea.notifyDataSetChanged();

这是我的 onContextItemSelected() 中的代码。我得到了日志，但没有得到 Toast 或注意到任何数据库删除。

也许这一切都归结为数组更新得不够？我应该创建一个方法来更新数组并在之后使用它吗？

谢谢

原文

So basically my database was working for a little while (very glitchy though, had to basically restart my application to see the change in my list view).

This is a two part question:

I use a customized adapter and use

ea.notifyDataSetChanged();

to try and update my adapter. But I think the problem lies that the arrays don't update as well.

List<String> rList = db.selectAllReceive();
    receiveMessages = rList.toArray(new String[rList.size()]);

Should I just update the array inside the adapter?

Part two:

db.delete(clicked);
        Toast.makeText(getBaseContext(), "Deleted Row: " + clicked, Toast.LENGTH_SHORT);
        Log.i("ContextMenu", "[MainAct.Class] Clicked DELETE");
        ea.notifyDataSetChanged();

This is my code that is within my onContextItemSelected(). I get my log, but I do not get a Toast or notice any database deletion.

Maybe it all comes down to the fact that the array is not updated enough? Should I create a method to update the arrays and use it after it?

Thanks

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