Kotlin how to copy class property fields in its own member function I have the following code, I would like to update the properties in class A, in c++, I can use something like this = A() within the udpate() that invokes implicity operator = () data class B( var A: Int = 10, var B: Long = 20L, var C: Double = 200.0 ) data class A( var a: Int = 0, ) { fun badUpdate(input: B) { var holder = this@A // It does not work, is there any way to update within the member function? holder = A(a=B.A) } fun...

How to add "-Dkotlinx.coroutines.debug" JVM option to android project According to the docs we can add -Dkotlinx.coroutines.debug JVM option to debug coroutines. How to do it for Android project in Android Studio?

Changing 1 value of an arrays makes the other values null I have multiple edit text; whenever the text gets changed, I call an interface and then write the code in the overridden method. This is how it looks: override fun onOptionTextChanged(position: Int, text: String) { val oldOptions = questions[holder.adapterPosition].options.copyOf() Log.d(TAG, "onOptionTextChanged: oldOptions: ${oldOptions.contentToString()}") questions[holder.adapterPosition].options = arrayOfNulls(questionOptionAddList.size) for (oldDataIndex in...

Android studio library My team and I just developed a web base system. Next, we are planning to build an Android mobile app version of the system. But none of us have experience of creating a mobile app. I did some reading from google, I saw a lot of people talk about some library like kotlin, volley, retrofit etc. One thing I still don't understand, can someone tell me how kotlin, groovy are different with retrofit and volley? Is it just like web base development where one is for front end development and another...

Kotlin Code to Validate a Confirmation of Password Need code to validate the confirmation of password, included is the validation of password field: private fun passwordValidate(text: String?): Boolean { var p = Pattern.compile("^(?=.*[a-z])(?=.*[A-Z])(?=.*\\d)(?=.[@\$!%?&])[A-Za-z\\d@\$!%*?&]{5,20}\$") var m = p.matcher(text) return m.matches() } The confirm password I would guess would start of similar as follows: private fun confirmpasswordValidate(text: String?): Boolean { var p =...

How to Validate imageview where we are getting image from gallery i am sending getting image from gallery in imageview and want to send this imageview along with edittexts but when i left imageview empty and press update button app crashes. How to validate my imageview along with edittext android Kotlin here i have icons on my actionbar one is update and other is edit when i press edit my edittext becomes editable but when press update i have validation on edittext which will show "please enter.." but when i keep edittext unchanged and try to update myn...

How to filter emoji and text as separate in Android/Kotlin i need a functionality like , In an editText when ever i type an emoji it should be add to another textview(emoji textView) no need to add to the typed editText. Issue am facing is when i type any name with out space while add an emoji, the namestring also append with the emoji textview. i am sharing the snippet which i have done. layoutBinding.tieWriteAMessage.filters = arrayOf(inputFilter) private val inputFilter = InputFilter { source, start, end, _, _, _ -> val spannableString =...

How to properly set up transasction management for jOOQ in Spring Boot in the presence of JPA? Let's start with a small integration test: @ExtendWith(SpringExtension::class) @SpringBootTest @AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE) @AutoConfigureTestEntityManager @Transactional(isolation = READ_UNCOMMITTED) class JooqConfigIT) { companion object { const val testProjectId = 2021520 } @Autowired lateinit var ctx: DSLContext @Test fun `dialect is set to postgres`() {...

KotlinExtensions.kt line XX retrofit2.KotlinExtensions$await$2$2.onResponse got this countless time with Crashlytics I'm developing an app recording with a background service your position and sending it to a server, every second. As many other users, we have to deal with battery saver to make sure the background service works properly. And we have to thanks daily dontkillmyapp.co/ for their outstanding work. However, I got a issue reported with Crashlytics countless time KotlinExtensions.kt line 53 retrofit2.KotlinExtensions$await$2$2.onResponse This error is reported as non fatal, but usually it match...

Send upstream exception in SharedFlow to collectors I want to achieve the following flow logic in Kotlin (Android): Collectors listen to a List across several screens of my app. The source-of-truth is a database, that exposes data and all changes to it as a flow. On the first initialization the data should be initialized or updated via a remote API If any API exception occurs, the collectors must be made aware of it In my first attempt, the flow was of the type Flow, with the following logic: val dataFlow = combine(localDataSource.dataFlow,...

In Kotlin, are there graceful ways of passing values from one instance to another, which have the same name? I have the following classes class A( val value1: String, val value2: String, val value3: String, val value4: String, val value5: String, ) class B( val value1: String, val value2: String, val value3: String, val value4: String, val value5: String, ) { compaion object { from(a: A) = B( value1 = a.value1, value2 = a.value2, value3 = a.value3, value4 = a.value4, value5 = a.value5, ) } } I write codes as follows when I want to...

How to load array data from firestore? I don't know how to load this array field (IllnessHistory), I have searched on google for it, but no one works. Anyone can help me with this?. here is my code and screenshot of my firebase structure override suspend fun loadHistoryGiveDonor(userId: String): ArrayList { val data = ArrayList() giveDonorCollectionReference.whereEqualTo(Constants.USER_ID, userId).get() .addOnSuccessListener { documents -> for (document in documents) {...

Guice & Dropwizard - Field Injection not working - while Constructor Injection does I have a test class that looks something like this class SomeTest { @Inject @Named("something") private lateinit var someClass: SomeClass } The SomeClass is defined in the following way: class SomeClass(firstClass: FirstClass, secondClass: SecondClass) { } With no constructor injection. In a separate DropwizardAwareModule, I define a Provides function that provides 2 possible instances of SomeClass. For example - @Provides @Named("something") fun getSomeClass(firstClass: FirstClass,...

Livedata.value returns null paymentViewModel.paymentMethods.value?.indexOf(paymentViewModel.selectedPaymentMethod) ?.let { editPaymentMethod(it) } even though the value is not null. I logged it just before the above line of code

How should I build a project in native Android which has a feature like Lenskart? I want to just put glass over eyes. I can use the CameraX Library for taking picture. and take some coordinates for eyes. Any best way to approch this problem

How get result? I trying to get result when i add values EditText . How i can do it and show result , because i dont understand class CheckSkillsFragment : MainActivity() { private lateinit var binding: FragmentCheckSkillBinding private lateinit var parameter1: EditText private lateinit var skill1: EditText private lateinit var modifier1: EditText override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState)...

How can I change the keyboard to numeric for a webview Android? Tried using - view?.evaluateJavascript("document.getElementById('otpValue').type = 'number';",null) But, only entries changed to number and keyboard didn't

Android camera with OpenCV I am new in Android and need a way to preprocessing The Frames before i show it on The Layout . I use jetpack compose ,camerax and opencv . so i need a way to take The Frame as Bitmap or Mat and handle/preprocessing The Frame by Opencv and view it . my code

How to write junit test for object class in kotlin/android? Maybe this is very basic question but could not find anything online. I have created a object class in kotlin contains few methods. I am calling those from ViewModel and I have written junit test case for ViewModel where object class instance is mocked, fine so far. Now, I want to write junit for my object class separately as well even though from ViewModel verify() calls are working fine. Some code snippet from my project object InfoHelper { fun method(param: Xyz): Boolean {...

Why Okhttp post request is not setting token after I give them properly This is My Okhttp Kotlin Request val gson = Gson() val json = gson.toJson(orderShip) Log.e(TAG, "onResponse: -- $json") val mediaType: MediaType? = MediaType.parse("application/json") val body: RequestBody = RequestBody.create( mediaType, json) val request: okhttp3.Request = okhttp3.Request.Builder() .url("https://apiv2.shiprocket.in/v1/external/orders/create/adhoc")...

In Kotlin how to match two passwords with a confirm password In Kotlin how to match two passwords with a confirm password, when the password is being typed in, at the start it shows it does not match, with an error message, which is correct, but when I enter any text into the Confirm Password field it says there is no longer a problem, even if they do not correlate. reg_password.addTextChangedListener(object:TextWatcher { override fun afterTextChanged(p0: Editable?) { } override fun beforeTextChanged(p0:...

how to hide one icon on click of other icon on actionbar android kotlin I have two icons on actionbar what i want is when i click on edit icon update icon gets hide and when i click on update button edit icon gets hide also when i press back button my activity crash enter code here override fun onOptionsItemSelected(item: MenuItem): Boolean { return when (item.itemId) { R.id.edit_icon -> { name.setEnabled(true); phone.setEnabled(true); name.setFocusableInTouchMode(true); phone.setFocusableInTouchMode(true);...

Convert python code and use it as a component in kotlin android project having a huge logic python service which can be called using cli, we need that logic in an android app. the app is getting written in kotlin but as the python part is somehow huge, I was wondering if there be a solution like a tool to convert python into java or kotlin and use the it in project without having to rewrite all the codes again in kotlin. searching around I found some solutions like kivy which could convert some python...

I don't know how to use currnet item in viewpager I want to use currentItem on Fragments in viewpager2 ViewPager is also fragment. and my all fragments have viewbinding. My fragment call viewpager by findViewById. But It isn't worked. It's data is always 'null'. Can I use findviewbyid and viewbinding both of them? I already tried to use findViewbyID in onviewcreated or oncreateview Please help me

Cannot run program "su": error=13, Permission denied I have a rooted android device and in the manifest, I have added permission android.permission.ACCESS_SUPERUSER also, but still getting error Cannot run program "su": error=13, Permission denied.

Drop shadow in TextInputLayout using Figma or XD Is there any way in Android that applies drop shadow as shown in Figma or XD Tool ? I have got a figma design and I am stuck in creating this drop effect I have tried it using selector and layer-list Is there any way to apply x , y and blur effect along with shadow color with opacity. My View Attribues in Figma are below .

How to persistently get Battery level and Charging status in Android (Kotlin)? I want to get the battery level and charging status(plugged or unplugged) persistently for my app, i.e every 3-4 seconds, or better, only when it changes. Currently I am doing this:         val bm = getSystemService(BATTERY_SERVICE) as BatteryManager         val manager = ContextCompat.getSystemService(this,NotificationManager::class.java) as NotificationManager         val intent = this.registerReceiver(null, IntentFilter(Intent.ACTION_BATTERY_CHANGED))...

Exoplayer slow hide and show controller I have a problem with exoplayer. The timebar slides up instead of just appearing instantly when the controller is visible and when the controller hides automatically there's a huge delay. Have a look Imgur

Debug is working but release not - Kotlin receives data via Bluetooth I am working on Bluetooth receiving and sending data. I can send data via Bluetooth but it doesn't work the receive data. I want to get string data and split it. And the split data will show the list view. Since data import is not working, I created string data and called the split method, but it didn't work here either in a release. Can you help me? Here are my Activity codes; var mUUID: UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB") var mBluetoothSocket:...

How can I fix this error for view Model? (Occurs when running the program on the emulator) Error running program on emulator:The application is installed but it gives this error when running the program 2022-06-16 153804.724 12519-12555/com.example.mvvm E/AwareLog: AtomicFileUtils: readFileLines file not exist: android.util.AtomicFile@5abc123 2022-06-16 153804.725 12519-12555/com.example.mvvm E/AwareLog: AtomicFileUtils: readFileLines file not exist: android.util.AtomicFile@30c1620 2022-06-16 153805.103 12519-12519/com.example.mvvm E/AndroidRuntime: FATAL EXCEPTION: main...