我在我的安卓应用中操作一个SQLite3数据库。我刚刚从已预置的数据库中读取了200k行和14列的内容。每个条目都是单词,所有列的数据类型均为文本。查询长度不超过11个字母的单词(如ABANDONMENT)能够正常工作。但对于12个或更多字母的单词(如ABANDONMENTS),应用程序会崩溃。以下是日志:
Could not allocate CursorWindow '//data//data//com.example.myapp//databases//database.sqlite' of size 2097152 due to error -12.
threadid=11: thread exiting with uncaught exception (group=0x40adf9f0)
FATAL EXCEPTION: Thread-2883
android.database.CursorWindowAllocationException: Cursor window allocation of 2048 kb failed. # Open Cursors=861 (# cursors opened by this proc=861)
at android.database.CursorWindow.<init>(CursorWindow.java:104)
at android.database.AbstractWindowedCursor.clearOrCreateWindow(AbstractWindowedCursor.java:198)
at android.database.sqlite.SQLiteCursor.fillWindow(SQLiteCursor.java:162)
at android.database.sqlite.SQLiteCursor.getCount(SQLiteCursor.java:156)
at android.database.AbstractCursor.moveToPosition(AbstractCursor.java:161)
at android.database.AbstractCursor.moveToFirst(AbstractCursor.java:201)
at com.example.myapp.MainActivity.query(MainActivity.java:815)
at com.example.myapp.MainActivity$2.run(MainActivity.java:356)
at java.lang.Thread.run(Thread.java:856)
代码:
query = "select * from words where col_1 = \"" + (myWord)+ "\";";
cursor = database.rawQuery(query, null);
if (cursor != null)
cursor.moveToFirst(); // line 815
if (!cursor.isAfterLast()) {
do {
for (i = 1; i < cursor.getColumnCount(); i++) {
temp = cursor.getString(i);
//other stuff
}
} while (cursor.moveToNext());
cursor.close();
}
出错信息的含义是什么,为什么应用程序会崩溃?