android - Android CalendarContract 帐户名称问题

Question

我在使用 CalendarContract API 选择帐户时遇到问题。我收到以下错误：

引起：android.database.sqlite.SQLiteException：靠近“@iancorneli”：语法错误（代码1）：，编译时：SELECT _id FROM Calendars WHERE（account_name = me@iancorneli.us account_type = LOCAL）

代码如下：

private void getAccounts() {
    AccountManager manager = AccountManager.get(context);
    Account[] accounts = manager.getAccountsByType("com.google");

    for (Account account : accounts) {
        accountName = account.name;
        accountType = account.type;
        break;
    }
}

private long getCalendarID() {
    getAccounts();
    String[] projection = new String[]{CalendarContract.Calendars._ID}; 
    String selection = 
        CalendarContract.Calendars.ACCOUNT_NAME + 
        " = " + accountName + " " + 
        CalendarContract.Calendars.ACCOUNT_TYPE + 
        " = " + CalendarContract.ACCOUNT_TYPE_LOCAL + " "; 
    String[] selArgs = 
        new String[]{
            CalendarContract.Calendars.ACCOUNT_NAME, 
            CalendarContract.ACCOUNT_TYPE_LOCAL
    }; 
    Cursor cursor = context.getContentResolver().query(
        CalendarContract.Calendars.CONTENT_URI, 
        projection, 
        selection, 
        selArgs, 
        null
    ); 
    if (cursor.moveToFirst()) { 
        return cursor.getLong(0); 
    } 
    return -1; 
}

关于我哪里出错的任何帮助？

Answer 1

您似乎错误地使用了选择参数 - 您的选择中应该有 a ?，并且它们?被替换为选择参数中的值，如果需要，自动将它们用引号引起来：

String selection = 
    CalendarContract.Calendars.ACCOUNT_NAME + 
    " =? AND " + 
    CalendarContract.Calendars.ACCOUNT_TYPE + 
    " =?"; 
String[] selArgs = 
    new String[]{
        accountName, 
        CalendarContract.ACCOUNT_TYPE_LOCAL
};