构造函数不可见 [英] Constructor not visible

问题描述

我正在开发一个Android应用程序，该应用程序使用 ScanResult 对象.该对象的形式为:

I am developing an Android application which makes use of the ScanResult object. This object is in the form of:

[SSID: __mynetwork__, BSSID: 00:0e:2e:ae:4e:85, capabilities: [WPA-PSK-TKIP][ESS], level: -69, frequency: 2457, timestamp: 117455824743]

我试图通过创建自己的扩展ScanResult的类来覆盖此类的equals()方法:

I am trying to override the equals() method of this class by creating my own class which extends ScanResult:

public class MyScanResult extends ScanResult {

    public MyScanResult() {
        super();
    }

    @Override
    public boolean equals(Object o) {
        if (this == o)
            return true;
        if (!(o instanceof ScanResult))
            return false;

        ScanResult obj = (ScanResult) obj;
        if (!BSSID.equals(obj.BSSID))
            return false;
        if (!SSID.equals(obj.SSID))
            return false;
        if (!capabilities.equals(obj.capabilities))
            return false;
        if (frequency != obj.frequency)
            return false;
        if (level != obj.level)
            return false;

        return true;
    }

}

但是，当我尝试此操作时，出现以下错误:The constructor ScanResult() is not visible.我该如何解决?

However when I try this, I get the following error: The constructor ScanResult() is not visible. How can I solve this please?

推荐答案

ScanResult的公共构造函数签名为:

The public constructor signature for ScanResult is:

public ScanResult(String SSID, String BSSID, String caps, int level, int frequency) 

您需要调用具有匹配参数的超类

You need to invoke the super class with matching parameters

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