callback

问题 I am using an external API provider, after calling a fetch function, it starts doing a verification, and after the verification is done (success or failure) it is supposed to post the result to a callback_url, but it doesnt. their API provides (along with "callback_url" parameter) a "redirect_url" parameter which is supposed to redirect you to that url once verification is done, i thought i would try it to see if it works or not. and it works fine. Here is the fetchInfo function i call in my

问题 I have a cursor which is an id to get the next set of results from server, and i tried adding a do while loop until cursor value reaches 0 (end of results), i realised onResponse and onFailure callback methods are not called once i added the do while loop so the cursor is stuck at initial value without reaching 0 ( fetchResults from the api are not called). The loadTwitterFriends keeps getting called and it resulted in an infinite do while loop. Can i know why the callback methods aren't

问题 function foreignCoordinatesArray(){ var coordinates = []; $.getJSON('/critics.json?travel_id=' + $('#foreign_travel').val(), success); function success(ary) { for(var a in ary){ var obj = ary[a]; coordinates.push(new google.maps.LatLng(obj.latitude, obj.longitude)); } } console.log(coordinates); } At the end coordinates will still be [] and not [{...},{...},...]. I guess this must be a problem with closures How can I have my desired value in coordinates array? 回答1: It's not a problem with

问题 jQuery Tools includes a flashembed API which accepts many parameters. Is there one which accepts callback function and fires after the success state of the flash player load event? playerdiv.flashembed(url+'/VIPlayer.swf','knds_player',300,250,'8.0.0',false,flashVars); Information: official website. Note: This is possible in Google swfobject library as below: swfobject.embedSWF(url+'/VIPlayer.swf','knds_player',300,250,'8.0.0',false,flashVars,callBack); function callBack(event){ event after

问题 Here is my sample code. public class test extends Activity { private TextView tv; public class Blap extends AsyncTask<String,String,Boolean>{ private test parent; @Override protected Boolean doInBackground(String... options) { this.auth(options[0],options[1]); parent.aresponse(res); return true; } public Blap(test a){ this.parent = a; } public auth(String login, String password){ //process auth } } @Override public void onCreate(Bundle savedInstanceState) { //work... } public void buttonclick

问题 I was reviewing code from a chat demo application and I noticed that they created a class that extended Application, and inside the onCreate() was the following line registerActivityLifecycleCallbacks(new ActivityLifecycleHandler()); I then looked at the ActivityLifecycleHandler class and there were methods like public void onActivityDestroyed(Activity activity) { } public void onActivityPaused(Activity activity) { } public void onActivityCreated(Activity activity, Bundle savedInstanceState)

问题 I give up, I have to write and ask; I'm using an unmanaged DLL written in Delphi, which asynchronously invokes a (parameterless) callback passed to it whenever an event occurs in the hardware it is developed to monitor. What I do in C# is I keep a static reference to a created delegate, which is then passed as parameter to the start method on the Delphi side. This tells the DLL to notify me using the callback, whenever there is new data to fetch, using a GetData method. All works fine, real

问题 I give up, I have to write and ask; I'm using an unmanaged DLL written in Delphi, which asynchronously invokes a (parameterless) callback passed to it whenever an event occurs in the hardware it is developed to monitor. What I do in C# is I keep a static reference to a created delegate, which is then passed as parameter to the start method on the Delphi side. This tells the DLL to notify me using the callback, whenever there is new data to fetch, using a GetData method. All works fine, real

问题 My sample code: let name; Login.findOne().then(() => { name = 'sameer'; }); // consider this is async code console.log(name); So the above code works async, so now my console.log became undefined. I used callbacks to make the code work like synchronous. My callback code: let name; const callback = () => { console.log(name); }; Login.findOne().then(() => { name = 'sameer'; callback(); }); Now its working perfectly, My question is how you replace this small code with promises and async await

问题 I have a MediaPlayer and an audio file, which I need to play, also I have an ArrayList with the certain seconds of this audio file, on this seconds while audio is playing, I need to switch pages in the ViewPager. How to get a CallBack from the MediaPlayer in these certain moments of the time? or maybe you will recommend some other way how is possible to do it. What I have right now is the method, where I use CountDownTimer, which change pages in ViewPager, but it works wrong and it doesn't