如何訪問私有類中存在的公共方法

Question

我的代碼：

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*/

}

如何從“location”類調用“onSignalStrengthsChanged”方法。

Answer 1

您需要創建一個新的MyPhoneStateListener實例並在此實例上調用該方法。

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(...);
    }
}

請注意，您只能在location類中創建MyPhoneStateListener實例，因為您MyPhoneStateListener類定義為private。

另請注意， doSomething()屬於location 。