android – Can someone please explain how startActivity(intent) and startActivityForResult(intent) are Asynchronous?-ThrowExceptions

Exception or error: If an Asynchronous thread is a thread that operates separately to the main thread and doesn’t interfere with the main thread… Does a new Activity not occupy the main thread after it has been started through startActivity(intent)? The majority of what I have read on this says these are both asynchronous, however …

android – Throwing OutOfMemoryError "pthread_create (1040KB stack) failed: Try again" when doing asynchronous posts using Volley-ThrowExceptions

Exception or error: I’m using Volley to POST some data stored in a local database to a server. The problem is when I have a big number of entries (for example 500) I get this error: java.lang.OutOfMemoryError: pthread_create (1040KB stack) failed: Try again at java.lang.Thread.nativeCreate(Native Method) at com.android.volley.RequestQueue.start(RequestQueue.java:141) at com.android.volley.toolbox.Volley.newRequestQueue(Volley.java:66) at com.android.volley.toolbox.Volley.newRequestQueue(Volley.java:66) at mypackageName.SomeClass.upload(SomeClass) at …

android – Using OKHttp, what is the difference between synchronous request in AsyncTask and OKhttp Asynchronous request?-ThrowExceptions

Exception or error: OKHttp supports both synchronous and asynchronous api. If I want to issue an async request, I can: Use a AsyncTask, and issue OKhttp synchronous api. Issue a OKhttp asynchronous api. What is the difference between these 2 options? And which one is better? How to solve: Quite a lot differs! Using AsyncTask …

Asynchronous Worker in Android WorkManager-ThrowExceptions

Exception or error: Google recently announced new WorkManager architecture component. It makes it easy to schedule synchronous work by implementing doWork() in Worker class, but what if I want to do some asynchronous work in the background? For example, I want to make a network service call using Retrofit. I know I can make a …

android – How can I return String or JSONObject from asynchronous callback using Retrofit?-ThrowExceptions

Exception or error: For example, calling api.getUserName(userId, new Callback<String>() {…}); cause: retrofit.RetrofitError: retrofit.converter.ConversionException: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected a string but was BEGIN_OBJECT at line 1 column 2 I think I must disable gson parsing into POJOs but can’t figure out how to do it. How to solve: I figured it out. It’s embarrassing but it was …