android – RELEASE_KEY_ALIAS and RELEASE_KEY_PATH values for generating key hash-ThrowExceptions

Exception or error: 1- I’m trying to generate my key hash for integrating Android with Facebook. I understand that I have to run the following command on prompt (I am on Windows): keytool -exportcert -alias <RELEASE_KEY_ALIAS> -keystore <RELEASE_KEY_PATH> | openssl sha1 -binary | openssl base64 But where can I get the values of RELEASE_KEY_ALIAS and …

android – HashMap to ListView-ThrowExceptions

Exception or error: I have HashMap, how can I to put it in ListView? Which adapter need to use? public void showCinemas(HashMap<String, String> cinemas) { …//What? list.setAdapter(adapter); } How to solve: Make simple adapter class: MyAdapter.java import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.TextView; import java.util.ArrayList; import java.util.Map; public class MyAdapter extends BaseAdapter …

java – How to convert HashMap to json Array in android?-ThrowExceptions

Exception or error: I want to convert HashMap to json array my code is as follow: Map<String, String> map = new HashMap<String, String>(); map.put(“first”, “First Value”); map.put(“second”, “Second Value”); I have tried this but it didn’t work. Any solution? JSONArray mJSONArray = new JSONArray(Arrays.asList(map)); How to solve: Try this, public JSONObject (Map copyFrom) Creates a …

android – NoSuchMethodError: java.lang.Long.hashCode-ThrowExceptions

Exception or error: I have the following override of method on hashCode in AbstractORM class: var _id = Random().nextLong() override fun getId() = _id // AbstractORM class implements an interface that defines this method getId() override fun hashCode() = getId().hashCode() which suddenly started to throw the following exception: FATAL EXCEPTION: main java.lang.NoSuchMethodError: java.lang.Long.hashCode at com.company.ormlite.AbstractORM.hashCode(AbstractORM.kt:271) …

java – HashMap with weak values-ThrowExceptions

Exception or error: I’m implementing a cache for Objects stored persistently. The idea is: Method getObjectFromPersistence(long id); ///Takes about 3 seconds Method getObjectFromCache(long id) //Instantly And have a method: getObject(long id) with the following pseudocode: synchronized(this){ CustomObject result= getObjectFromCache(id) if (result==null){ result=getObjectFromPersistence(id); addToCache(result); } return result; } But I need to allow the CustomObject to …

x509certificate – How Do We Generate a Base64-Encoded SHA256 Hash of SubjectPublicKeyInfo of an X.509 Certificate, for Android N Certificate Pinning?-ThrowExceptions

Exception or error: The documentation in the N Developer Preview for their network security configuration offers these instructions: Certificate pinning is done by providing a set of certificates by hash of the public key (SubjectPublicKeyInfo of the X.509 certificate). A certificate chain is then only valid if the certificate chain contains at least one of …