android.database.cursorindexoutofboundsexception错误解决 及获取某行某列信息

 1     /**
 2      * 获取某行某列信息
 3      * @param info
 4      * @param column
 5      * @return
 6      */
 7     public static int getIntValue(ItemInfo info, String column) {
 8         ContentResolver cr = LauncherApplication.getApp().getContentResolver();
 9         final Cursor c = cr.query(CONTENT_URI, new String[]{column}, ID + "=" + info.id, null, null);
10         if (null == c) {
11             return 0;
12         }
13         
14         final int index = c.getColumnIndex(column);
15         int value = 0;
16         if (c.moveToFirst()) {
17             c.getInt(index);
18         }
19         
20         c.close();
21         return value;
22     }

注:cr.query()中new String[]{column}参数指定返回那些列信息, 如果返回所有列, 赋值null, 但是这样效率比较低

android.database.cursorindexoutofboundsexception异常发生在c.getInt(index);这行代码, 需要加上if (c.moveToFirst()) {}这个判断条件即可

原文地址:https://www.cnblogs.com/littlezan/p/3586509.html