SELECt count（*）FROM表上的Android SQLite Cursor超出范围异常

你错过了

mcursor.moveToFirst();public void count(){    SQLiteDatabase db = table.getWritableDatabase();    String count = "SELECt count(*) FROM table";    Cursor mcursor = db.rawQuery(count, null);    mcursor.moveToFirst();    int icount = mcursor.getInt(0);    System.out.println("NUMBER IN DB: " + icount);}

但是您应该为此任务使用更好的方法，例如DatabaseUtils的内置帮助器。

如

public long count() {    return DatabaseUtils.queryNumEntries(db,'tablename');}

DatabaseUtils.longForQuery()