java - 如何访问私有(private)类中的公共(public)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*/

}

我如何从“位置”类调用“onSignalStrengthsChanged”方法。

Answer 1

您需要创建一个新的 MyPhoneStateListener 实例并调用该实例的方法。

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 location 类中创建一个 MyPhoneStateListener 实例，因为您将类定义为私有(private)的。

另外，请注意 doSomething() 属于 location。