处理CursorLoader异常 [英] Handle CursorLoader exceptions

问题描述

我有一个片段实现LoaderManager和使用CursorLoader（没有什么花哨）。我要赶在查询过程中引发的异常，但我不明白如何！任何帮助吗？ THX。

I have a Fragment implementing LoaderManager and using CursorLoader (nothing fancy). I want to catch exceptions thrown during the query but I don't see how!!! Any help? Thx.

推荐答案

您将需要从CursorLoader派生去做。事情是这样的：

You would need to derive from CursorLoader to do it. Something like this:

class MyCursorLoader extends CursorLoader {

    public MyCursorLoader(Context context) {
         super(context)
      }

    public CursorLoader(Context context, Uri uri, String[] projection, String selection,
            String[] selectionArgs, String sortOrder) {
        super(context, uri, projection, selection, selectionArgs, sortOrder);
    }

    @Override
    public Cursor loadInBackground() {

        try {
            return (super.loadInBackground);
        } catch (YourException e) {
            // Do your thing.
        }

        return (null);
    }

}

您可以修改它来实现你的错误处理。

You can adapt it to implement your error handling.

这篇关于处理CursorLoader异常的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！