Android：表格SQL查询错误

Question

我正在尝试向联系人数据库发送查询：

String CONTACTS = "/data/data/com.android.providers.contacts/databases/contacts.db";
SQLiteDatabase sqlDB;
try{
   sqlDB = SQLiteDatabase.openDatabase(CONTACTS,null, SQLiteDatabase.OPEN_READONLY);
}catch(SQLiteException sqlE){
   Log.e(TAG, sqlE.getMessage());
}
callCursor = sqlDB.rawQuery("SELECT _id, date, duration, number, type, name, numbertype,  COUNT(*) as cnt FROM calls WHERE ( 1=1 ) GROUP BY (number) ORDER BY cnt DESC", null);

但是我得到了错误

05-04 15:21:28.271: E/SQLiteDatabase(883): android.database.sqlite.SQLiteCantOpenDatabaseException: unable to open database file

是什么原因？

Answer 1

字符串CONTACTS =“ /data/data/com.android.providers.contacts/databases/contacts.db”; 应该为String CONTACTS =“ /data/data/com.android.providers.contacts/databases/contacts2.db”;