尝试访问游标数据时出错 [英] Error when trying to access Cursor data

问题描述

我的应用程序中有一个已填充的数据库，但无法通过查询方法中返回的游标访问数据。

I have a populated Database in my app but I'm having trouble to access data through a returned cursor from the query method.

Cursor query = getContentResolver().query(MoviesContract.MoviesEntry.CONTENT_URI,
        null,
        null,
        null,
        null);

query.moveToFirst();

while (query.isAfterLast() == false){
    Log.d("Test", query.getString(0));
    query.moveToNext();
}

我正在对此代码块进行测试。当我执行Log.d行时，会引发此错误：

I'm doing tests on this block of code. When I execute the Log.d line, this error is raised:

java.lang.IllegalStateException：无法读取行0，col
CursorWindow中的0。在
从中访问游标之前，请确保正确初始化了游标。

java.lang.IllegalStateException: Couldn't read row 0, col 0 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.

这就是我知道数据库内容的方式：

This is how I know my database has content:

我缺少了什么？这是我第一次处理游标。

What I'm missing? It's my first time dealing with cursors.

推荐答案

发现了问题：

CursorWindow：窗口已满：请求分配1369680字节，可用
空间596540字节，窗口大小2097152字节

CursorWindow: Window is full: requested allocation 1369680 bytes, free space 596540 bytes, window size 2097152 bytes

我正在将图像存储到数据库中。

I was storing images into the Database.

我将更改架构，以使用毕加索的离线缓存从Web服务存储图像。 。

I'm going to change my architecture to store the image from the webservice with the Offline Caching of Picasso.

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