Android interface callback function

Android interface callback function

Instance code:

 

(new OnHttpListener() {@Overridepublic void onStart() {// TODO Auto-generated method stubsuper.onStart();}@Overridepublic void onProgress(int mProgress, String message) {// TODO Auto-generated method stubsuper.onProgress(mProgress, message);}@Overridepublic void onSuccess(boolean status, int resultCode, String message,String data) {// TODO Auto-generated method stub}@Overridepublic void onFail(Exception e, String message) {// TODO Auto-generated method stub}@Overridepublic void onFinish() {// TODO Auto-generated method stubsuper.onFinish();}});

This type of code is often encountered during development. It looks mysterious. The onSuccess () and onFail methods are reloaded, and other methods need to be called by themselves. In fact, it is very simple and not nonsense. You can directly go to the Code:

 

 

/*** Process control start and end callback functions * @ author LanYan **/public abstract interface OnProcessListener extends BaseListener {/*** start task */void onStart (); /*** end of task */void onFinish ();}

Progress control:

 

 

/*** Progress control ** @ author LanYan **/public abstract class OnProgressListener implements OnProcessListener {/*** display control of progress bar * @ param mProgress * @ param message */public abstract void onProgress (int mProgress, string message); @ Overridepublic void onStart () {// TODO Auto-generated method stub} @ Overridepublic void onFinish () {// TODO Auto-generated method stub}

Htt request:

 

 

/*** HTTP access progress control ** @ author LanYan **/public abstract class OnHttpListener extends OnProgressListener {@ Overridepublic void onProgress (int mProgress, String message) {// TODO Auto-generated method stub}/*** callback function for request failure, returns the Exception information and Status Code * @ param e * @ param message */public abstract void onFail (Exception e, String message);/*** callback function for successful request, return response data * @ param status * @ param message * @ param data * @ param resultCode */public abstract void onSuccess (boolean status, int resultCode, String message, String data );}

Test class:

 

 

public class Test  {public static void main(String[] args) {getHttpData(HttpType.post, url, parmas, new OnHttpListener() {/*@Overridepublic void onStart() {// TODO Auto-generated method stubsuper.onStart();}*/@Overridepublic void onSuccess(boolean status, int resultCode, String message,String data) {// TODO Auto-generated method stub}@Overridepublic void onFail(Exception e, String message) {// TODO Auto-generated method stub}/*@Overridepublic void onFinish() {// TODO Auto-generated method stubsuper.onFinish();}*/});}public static void getHttpData(String type,String url,NameValuePair parmas,OnHttpListener listener){}public enum HttpType{get,post,defult}}