Question

我想在app实用程序文件中设置用户默认值，并在我想要的任何视图控制器中调用它们。这是今天的小部件：

import UIKit
import NotificationCenter

class TodayViewController: UIViewController, NCWidgetProviding {

@IBOutlet weak var BitCount: UILabel!
@IBOutlet weak var upCost: UILabel!

var Bits:Double = defualts.double(forKey: "bits")
var bitsPerClick:Double = defualts.double(forKey: "bitsPerClick")
var upgradePrice:Double =  defualts.double(forKey: "upgradeCost")

//Click bit
@IBAction func Click(_ sender: Any) {
    AppUtility().bitClick()
    BitCount.text = "\(Bits)"
}

//Click Upgrade
@IBAction func Upgrade(_ sender: Any) {
    AppUtility().upgradeClick()
        upCost.text = "Cost \(upgradePrice)"
        BitCount.text = "\(Bits)"
}

以下是app实用程序：

import Foundation
import UIKit

let defualts = UserDefaults.standard

var Bits:Double = defualts.double(forKey: "bits")
var bitsPerClick:Double = defualts.double(forKey: "bitsPerClick")
var upgradePrice:Double =  defualts.double(forKey: "upgradeCost")

class AppUtility: UIViewController {

public func setDefualts() {
defualts.set(0, forKey: "bits")

defualts.set(1, forKey: "bitsPerClick")

defualts.set(10, forKey: "upgradeCost")
}

public func upgradeClick() {

    if Bits >= upgradePrice {
        Bits = Bits - upgradePrice
        bitsPerClick = bitsPerClick + 1
        upgradePrice = upgradePrice * 1.5
    }
}
public func bitClick() {
    Bits = Bits + bitsPerClick
}
}

当我运行代码时，我的所有标签都显示为空白，因此我假设用户默认值未设置或未正确调用

Answer 1

您将值存储为整数，但将其读作双精度数。

更改

 defualts.set(1.0, forKey: "bitsPerClick")

到

var bitsPerClick:Int = defualts.integer(forKey: "bitsPerClick")

或将它们视为整数

<div class="modal-dialog modal-dialog-centered" style="width: 80em">
<div class="modal-content">
    <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-hidden="true" style="color: white">&times;</button>
        <h4 class="modal-title"><?php echo Yii::t('webposModule.strings','cusRelation.emailTemplate')?></h4>
    </div>
    <div class="modal-body clearfix" style="width: 80em; overflow-y: auto; max-height: 20%">
        <div class="clearfix">
            <div class="form-group">
                <i><?php echo Yii::t('webposModule.strings','cusRelation.birthdayPackage.chooseList'); ?></i>
                <?php
                $this->widget('zii.widgets.grid.CGridView',array(
                    'id' => 'oc-list-email-template',
                    'dataProvider'=> $dataProvider,
                    'summaryText' =>'',
                    'htmlOptions' => array('style' => 'overflow-y: auto; max-height: 40%'),
                    'emptyText' => Yii::t ('webposModule.strings', 'cusRelation.birthdayPackage.promoList.empty'),
                    'columns' => array(
                        array('name'=> 'emailid',
                            'value'=>'$data["id"]',
                            'htmlOptions' => array('style' => 'display:none;'),
                            'headerHtmlOptions'=>array('style' => 'display:none;'),
                            'filterHtmlOptions'=>array('style' => 'display:none;'),
                        ),
                        array(
                            'header' => '',
                            'id' => 'chkbox',
                            'name' => 'checkBox',
                            'selectableRows' => 2,
                            'class' => 'CCheckBoxColumn',
                        ),
                        array(
                            'header'=> Yii::t('webposModule.strings','cusRelation.templateName'),
                            'name'=> 'templateName',
                            'value'=>'$data["template_name"]',
                            'htmlOptions' => array('style'=> 'cursor: pointer'),
                        ),
                        array(
                            'header'=> Yii::t('webposModule.strings','cusRelation.subject'),
                            'name'=> 'subject',
                            'value'=>'$data["subject"]',
                            'htmlOptions' => array('style'=> 'cursor: pointer'),
                        ),
                    ),
                ));
                ?>

            </div>
        </div>
        <div class="clearfix">
            <div class="col-md-3">
                <?php echo CHtml::button(Yii::t ('webposModule.strings', 'cusRelation.apply'), array('id'=>'apply-email-template','class'=>'btn btn-default btn-top-rv oc-apply-email-template btn-block','data-dismiss'=>'modal')); ?>
            </div>
        </div>
    </div>
</div>

Answer 2

试试这个

/// Global Struct
struct globalValues {
    static var firstValue : String?
    static var secondValue : String?
}

/// Set Value
globalValues.firstValue = "1"
globalValues.secondValue = "2"

/// Get Values
print(globalValues.firstValue ?? "")
print(globalValues.secondValue ?? "")

/// When App is closed Struct will be cleared
/// Save Data for reference in UserDefaults
/// Now in App Delegate which is called for
/// first time Just Assign
/// Userdefaults values to Struct
/// So you can use it -- like
globalValues.firstValue = UserDefaults.standard.value(forKey: "firstValue") as? String
globalValues.secondValue = UserDefaults.standard.value(forKey: "secondValue") as? String

因此，您不需要将任何内容从一个类传递到另一个类，这将节省您的时间和一些代码（编译时间）

在.swift文件中传输用户默认值

2 个答案: