如何访问私有类中存在的公共方法

Question

我的代码：

public class location
{

private class MyPhoneStateListener extends PhoneStateListener
    {
       //Get the Signal strength from the provider, each time there is an update 
      @Override
      public void onSignalStrengthsChanged(SignalStrength signalStrength)
      {

      }
/*some text*/

}

如何从“location”类调用“onSignalStrengthsChanged”方法。

Answer 1

您需要创建一个新的MyPhoneStateListener实例并在此实例上调用该方法。

例如：

public class location {

    private class MyPhoneStateListener extends PhoneStateListener {
      //Get the Signal strength from the provider, each time there is an update 
      @Override
      public void onSignalStrengthsChanged(SignalStrength signalStrength)
      {

      }
      /*some text*/

    }

    public void doSomething() {
        PhoneStateListener listener = new MyPhoneStateListener();
        listener.onSignalStrenghtsChanged(...);
    }
}

请注意，您只能在MyPhoneStateListener类中创建location实例，因为您已将该类定义为私有。

另请注意，doSomething()属于location。