菜鸟教程小白 发表于 2022-12-13 15:31:00

ios - 谷歌在 swift 中放置自动完成功能并不完美


                                            <p><p>我尝试从 google place 进行“地点自动完成”，我直接从网站复制粘贴代码 <a href="https://developers.google.com/places/ios-api/autocomplete#use_the_fetcher" rel="noreferrer noopener nofollow">google developer</a>我也已经设置了 apikey ，但问题是为什么当我输入一个地方时结果看起来很奇怪，正如你在 <a href="http://i.stack.imgur.com/ixf2l.png" rel="noreferrer noopener nofollow">picture</a> 上看到的那样它似乎有效但并不完美。这是我的代码:</p>

<pre><code>import UIKit
import GoogleMaps

class FetcherSampleViewController: UIViewController {

var textField: UITextField?
var resultText: UITextView?
var fetcher: GMSAutocompleteFetcher?

override func viewDidLoad() {
    super.viewDidLoad()

    self.view.backgroundColor = UIColor.whiteColor()
    self.edgesForExtendedLayout = .None

    // Set bounds to inner-west Sydney Australia.
    let neBoundsCorner = CLLocationCoordinate2D(latitude: -33.843366,
      longitude: 151.134002)
    let swBoundsCorner = CLLocationCoordinate2D(latitude: -33.875725,
      longitude: 151.200349)
    let bounds = GMSCoordinateBounds(coordinate: neBoundsCorner,
      coordinate: swBoundsCorner)

    // Set up the autocomplete filter.
    let filter = GMSAutocompleteFilter()
    filter.type = .Establishment

    // Create the fetcher.
    fetcher = GMSAutocompleteFetcher(bounds: bounds, filter: filter)
    fetcher?.delegate = self

    textField = UITextField(frame: CGRect(x: 5.0, y: 0,
      width: self.view.bounds.size.width - 5.0, height: 44.0))
    textField?.autoresizingMask = .FlexibleWidth
    textField?.addTarget(self, action: &#34;textFieldDidChange:&#34;,
      forControlEvents: .EditingChanged)

    resultText = UITextView(frame: CGRect(x: 0, y: 45.0,
      width: self.view.bounds.size.width,
      height: self.view.bounds.size.height - 45.0))
    resultText?.backgroundColor = UIColor(white: 0.95, alpha: 1.0)
    resultText?.text = &#34;No Results&#34;
    resultText?.editable = false

    self.view.addSubview(textField!)
    self.view.addSubview(resultText!)
}

func textFieldDidChange(textField: UITextField) {
    fetcher?.sourceTextHasChanged(textField.text!)
}

}

extension FetcherSampleViewController: GMSAutocompleteFetcherDelegate {
func didAutocompleteWithPredictions(predictions: ) {
    let resultsStr = NSMutableString()
    for prediction in predictions {
      resultsStr.appendFormat(&#34;%@\n&#34;, prediction.attributedPrimaryText)
    }

    resultText?.text = resultsStr as String
}

func didFailAutocompleteWithError(error: NSError) {
    resultText?.text = error.localizedDescription
}
}
</code></pre>

<p>谁能帮帮我？</p></p>
                                    <br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
                                            <p><p>这是因为 <code>prediction.attributedPrimaryText</code> 是一个属性字符串。试试下面的代码</p>

<pre><code>func didAutocompleteWithPredictions(predictions: ) {
    let resultsStr = NSMutableAttributedString()
    for prediction in predictions {
      resultsStr.appendAttributedString(prediction.attributedPrimaryText)
      resultsStr.appendAttributedString(NSAttributedString(string: &#34;\n&#34;))
    }
    resultText?.attributedText = resultsStr
}
</code></pre></p>
                                   
                                                <p style="font-size: 20px;">关于ios - 谷歌在 swift 中放置自动完成功能并不完美，我们在Stack Overflow上找到一个类似的问题：
                                                        <a href="https://stackoverflow.com/questions/36248232/" rel="noreferrer noopener nofollow" style="color: red;">
                                                                https://stackoverflow.com/questions/36248232/
                                                        </a>
                                                </p>
                                       
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