如何覆盖Java中的类方法并添加"throws"(抛出)?申报到吗? [英] How do I override a class method in Java and add a "throws" declaration to it?

问题描述

在Android中有没有可能抛出"东西的AsyncTask?如果我不@Override方法，则不会调用该方法.如果我在末尾添加"throw"，则有编译器错误.例如，我想做类似的事情:

Would it be at all possible to have an AsyncTask in Android which "Throws" things? If I don't @Override the method, it doesn't get called. If I add the "throws" at the end, there are compiler errors. For example, I want to do something like:

class testThrows extends AsyncTask<String,Void,JSONObject> {
   @Override
   protected JSONTokener doInBackground(<String>... arguments) throws JSONException {
      String jsonString = arguments[0];
      JSONTokener json = new JSONTokener(jsonString);
      JSONObject object = json.getJSONObject("test");
      return object;
   }
}

json.getJSONObject抛出JSONException.有什么办法吗?

json.getJSONObject throws a JSONException. Is there any way to do this?

推荐答案

您不能执行此操作.多亏了Time4Tea，我得以将回调方法添加到发生错误时被调用的类中.例如:

You cannot do this. Thanks to Time4Tea, I was able to add callback methods to the class that get called when there is an error. For example:

try {
   JSONTokener json = new JSONTokener(stringToJsonify);
   JSONObject object = json.getJSONObject("test");
} catch (JSONException e){
   onJsonException();
}

其中onJsonException是类回调方法.

Where onJsonException is the class callback method.

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