Question

我正在创建此方法/函数，我需要实现回调。我的意思是，我需要添加一个动态参数，一个函数。我读过几篇文章但我无法理解如何获得它。任何想法或使用的例子？

public void httpReq (final String url, final Object postData, String callbackFunct, Object callbackParam,String callbackFailFunct) {
    if (postData == null || postData == "") {
        //GET
        Thread testGET = new Thread(new Runnable() {
            @Override
            public void run() {
                StringBuilder builder = new StringBuilder();
                HttpClient client = new DefaultHttpClient();
                HttpGet httpGet = new HttpGet(url);
                ....
                }
        }
    } else {
        //POST
        Thread testPOST = new Thread(new Runnable() {
            @Override
            public void run() {
                HttpGet httpPost = new HttpPost(url);
                ....
                }
        }
    }
}

Answer 1

定义您的界面：

public interface MyInterface {
  public void myMethod();
}

将其添加为方法的参数

public void httpReq (final String url, final Object postData, String callbackFunct, Object callbackParam,String callbackFailFunct, MyInterface myInterface) {
    // when the condition happens you can call myInterface.myMethod();
}

当你打电话给你的方法时，你将拥有，例如，

myObjec.httpReq(url, postData, callbackFunct, callbackParam, callbackFailFunct,
 new MyInterface() {
     @Override
     public void myMethod() {

    }
 });

是你需要的吗？

如何创建回调（添加为动态参数，一个函数）？

1 个答案: