Parameter specified as non null is null method kotlin jvm internal intrinsics checknotnullparameter

The bottom line is that Kotlin throws this exception with this particular message pattern when we set a non-null property to null at runtime.

3. Conclusion

In this short tutorial, we learned how Kotlin enforces null-safety at both compile-time and runtime.

As usual, all the examples are available over on GitHub.

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Parameter specified as non-null is null : kotlin.jvm.internal.Intrinsics.checkNotNullParameter

Parameter specified as non-null is null : kotlin.jvm.internal.Intrinsics.checkNotNullParameter

I’m trying to upload image to website, It was successful but app shows FETAL error.

issue seems like in AsyncTask as it might get executed to early.

I also upgraded SDK version 30 to 32
& ucrop:2.2.5

package com.myappname.dating.ui.home.profileImageUploading import android.app.Activity import android.content.Intent import android.graphics.Color import android.net.Uri import android.os.AsyncTask import android.os.Bundle import android.view.View import android.widget.Toast import androidx.appcompat.app.AppCompatActivity import com.myappname.dating.R import com.myappname.dating.data.db.CrushDataBase import com.myappname.dating.data.network.ApiHelper import com.myappname.dating.data.network.model.profileRespo.ProfileStatus import com.myappname.dating.data.network.model.user.Mediafile import com.myappname.dating.data.network.model.user.UserResponse import com.myappname.dating.data.pref.AppPreferencesHelper import com.myappname.dating.ui.login.LoginActivity import com.myappname.dating.ui.utils.AppConstants import com.myappname.dating.ui.utils.CommonUtil import com.yalantis.ucrop.UCrop import kotlinx.android.synthetic.main.activity_user_image_crop.* import kotlinx.android.synthetic.main.activity_user_image_crop.pb_load import okhttp3.MediaType.Companion.toMediaTypeOrNull import okhttp3.MultipartBody import okhttp3.RequestBody import okhttp3.RequestBody.Companion.asRequestBody import okhttp3.RequestBody.Companion.toRequestBody import retrofit2.Call import retrofit2.Callback import retrofit2.Response import java.io.File @Suppress("NULLABILITY_MISMATCH_BASED_ON_JAVA_ANNOTATIONS") class UserImageCropActivity : AppCompatActivity(), View.OnClickListener, CropImageView < internal val IMAGE_REQUEST_CODE = 123 internal val CROP_IMAGE_NAME = "cropImage" private lateinit var mImageCropPresenter : ImageCropPresenter lateinit var from : String var imageUriResultCrop: Uri? = null var uriString: String? = null lateinit var mPref: AppPreferencesHelper var mCrushDataBase: CrushDataBase? = null lateinit var userResponse: UserResponse; override fun onCreate(savedInstanceState : Bundle?) < super.onCreate(savedInstanceState) setContentView(R.layout.activity_user_image_crop) mPref = AppPreferencesHelper(applicationContext, AppConstants.PREF_NAME) val view: View = findViewById(R.id.imageCropActivity) mCrushDataBase = CrushDataBase.getDatabase(this) mImageCropPresenter = ImageCropPresenterImpl(this, this, view) if(intent != null)< from = intent.getStringExtra("From").toString() >if(from.equals("Signup")) < //Toast.makeText(applicationContext, "Uploaded", Toast.LENGTH_SHORT).show() >else < userResponse = getDataTask(this).execute().get() >val galleryIntent = Intent(Intent.ACTION_PICK) galleryIntent.type = "image/*" if(galleryIntent.resolveActivity(packageManager) != null) < startActivityForResult( Intent.createChooser(galleryIntent, "Select Picture"), IMAGE_REQUEST_CODE ) >uploadBtn.setOnClickListener(this) > override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) < super.onActivityResult(requestCode, resultCode, data) if (requestCode == IMAGE_REQUEST_CODE && resultCode == Activity.RESULT_OK) < val imageUri = data?.data if (imageUri != null) < startCrop(imageUri) >else < uploadBtn.visibility = View.GONE finish() // if (from == "") < // // >// else if(from == "") // < // // >> > else < imageUriResultCrop = data?.let < UCrop.getOutput(it) >uriString = imageUriResultCrop?.path if (imageUriResultCrop != null) < result_image.setImageURI(imageUriResultCrop) uploadBtn.visibility = View.VISIBLE >else < uploadBtn.visibility = View.GONE finish() >> > private fun startCrop(uri: Uri) < var destinationFileName = CROP_IMAGE_NAME destinationFileName += ".jpg" val uCrop = UCrop.of(uri, Uri.fromFile(File(cacheDir, destinationFileName))) uCrop.withAspectRatio(1F, 1F) uCrop.withMaxResultSize(800, 800) uCrop.withOptions(getCropOptions()) uCrop.start(this) >private fun getCropOptions() : UCrop.Options < val options = UCrop.Options() options.setHideBottomControls(false) options.setFreeStyleCropEnabled(true) options.setStatusBarColor(resources.getColor(R.color.colorPrimaryDark)) options.setToolbarColor(resources.getColor(R.color.colorPrimary)) return options >override fun onClick(v: View?) < when (v?.id) < R.id.uploadBtn -> < if (uriString == null || uriString == "") < Toast.makeText(applicationContext, "please select an image ", Toast.LENGTH_LONG) .show() return >else < val file = File(imageUriResultCrop?.path) val requestFile = file.asRequestBody("multipart/form-data".toMediaTypeOrNull()) val body = MultipartBody.Part.createFormData("avater", file.name, requestFile) val accessToken: String? = mPref.getAccessToken() val requestBody = accessToken?.toRequestBody(MultipartBody.FORM) if (from.equals("Signup"))< updateAvater(requestBody,body) >else if(from.equals("ProfileAct"))< updateAvaterp(requestBody,body) >else if(from.equals("userImage"))< updateAvaterG(requestBody,body) >else if(from.equals("userImageD")) < updateAvaterGal(requestBody,body) >else < mImageCropPresenter.imageCropUploadPresenter(requestBody, body) >> uploadBtn.isClickable = false uploadBtn.setBackgroundColor(Color.parseColor("#e4e6e8")) > > > fun updateAvaterp( access_token: RequestBody?, avater: MultipartBody.Part ) < ApiHelper().updateAvaterImage(access_token, avater) .enqueue(object : Callback< override fun onFailure(call: Call, t: Throwable) < Toast.makeText(applicationContext, "Failed to upload please select another image or check internet", Toast.LENGTH_SHORT) .show() uploadBtn.isClickable = true uploadBtn.setBackgroundColor(Color.parseColor("#2196f3")) >override fun onResponse( call: Call, response: Response ) < if (response.isSuccessful) < val updateCheck = UpdateTaskA( [email protected], response.body(). picurl, userResponse.id ).execute().get() Toast.makeText(applicationContext, "Profile Upload Successfully", Toast.LENGTH_SHORT).show() finish() > > >) > fun updateAvaterG( access_token: RequestBody?, avater: MultipartBody.Part ) < ApiHelper().updateAvaterImage(access_token, avater) .enqueue(object : Callback< override fun onFailure(call: Call, t: Throwable) < Toast.makeText(applicationContext, "Failed to upload please select another image or check internet", Toast.LENGTH_SHORT) .show() >override fun onResponse( call: Call, response: Response ) < if (response.isSuccessful) < val updateCheck = UpdateTaskG([email protected], response.body(). picurl, userResponse. id ).execute().get() Toast.makeText(applicationContext, "Profile Upload Successfully", Toast.LENGTH_SHORT).show() finish() > > >) > fun updateAvaterGal( access_token: RequestBody?, avater: MultipartBody.Part ) < ApiHelper().uploadImage(access_token, avater) .enqueue(object : Callback< override fun onFailure(call: Call, t: Throwable) < Toast.makeText(applicationContext, "Failed to upload please select another image or check internet", Toast.LENGTH_SHORT) .show() >override fun onResponse( call: Call, response: Response ) [email protected], response.body(). picurl, userResponse. id ).execute().get() Toast.makeText(applicationContext, "Image Upload Successfully", Toast.LENGTH_SHORT).show() // finish() // var lnk = response.body(). file_url // response.body().picurl val intent = Intent(applicationContext, UserImageGalleryActivity::class.java) // intent.putExtra("fileurl", lnk) // intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_CLEAR_TASK startActivity(intent) //startActivity(Intent(this, UserImageGalleryActivity::class.java)) > > >) > fun updateAvater( access_token: RequestBody?, avater: MultipartBody.Part ) < ApiHelper().updateAvaterImage(access_token, avater) .enqueue(object : Callback< override fun onFailure(call: Call, t: Throwable) < Toast.makeText(applicationContext, "Failed to upload please select another image or check internet", Toast.LENGTH_SHORT) .show() >override fun onResponse( call: Call, response: Response ) < if (response.isSuccessful) < val intent = Intent(applicationContext, LoginActivity::class.java) intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_CLEAR_TASK startActivity(intent) finish() >> >) > override fun showProgressBar() < pb_load.visibility = View.VISIBLE >override fun hideProgressBar() < pb_load.visibility = View.GONE >override fun onSuccess(id: String) < var value: List// val updateCheck = UpdateTask(this,map).execute().get() Toast.makeText(applicationContext, "Image Upload Successfully$id", Toast.LENGTH_LONG).show() finish() > override fun onFailure(message: String) < Toast.makeText( applicationContext, "Image not upload Something went wrong"+message, Toast.LENGTH_LONG ).show() finish() >override fun backToActivity() < val intent = Intent(applicationContext, UserImageGalleryActivity::class.java) intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_NEW_TASK startActivity(intent) finish() >override fun onDestroy() < super.onDestroy() mImageCropPresenter.onDestroy() >private class UpdateTask(var context: UserImageCropActivity, var value: List?) : AsyncTask() < override fun doInBackground(vararg params: Void?): Boolean < context.mCrushDataBase. crushDao().updateMediaFile(value, 1) return true >override fun onPostExecute(bool: Boolean?) < if (bool!!) < >> > class UpdateTaskA(var context: UserImageCropActivity, var avatar: String,var id : Int) : AsyncTask() < override fun doInBackground(vararg params: Void?): Boolean < val imageAvatar = CommonUtil.convertToString64(avatar) context.mCrushDataBase. crushDao().updateAvatar(imageAvatar. id) return true >override fun onPostExecute(bool: Boolean?) < if (bool!!) < >> > class UpdateTaskG(var context: UserImageCropActivity, var avatar: String, var user: Int) : AsyncTask() < override fun doInBackground(vararg params: Void?): Boolean < val imageAvatar = CommonUtil.convertToString64(avatar) context.mCrushDataBase. crushDao().updateAvatar(imageAvatar. user) return true >override fun onPostExecute(bool: Boolean?) < if (bool!!) < >> > class getDataTask(var context: UserImageCropActivity) : AsyncTask() < override fun doInBackground(vararg params: Void?): UserResponse < var listOfdata = context.mCrushDataBase. crushDao().getData() val data = listOfdata[0] return data >override fun onPostExecute(userResponse: UserResponse?) < >> > 

Error was displayed in line

 FATAL EXCEPTION: main Process: com.myappname.dating, PID: 17170 java.lang.NullPointerException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkNotNullParameter, parameter avatar at com.myappname.dating.ui.home.profileImageUploading.UserImageCropActivity$UpdateTaskA.(Unknown Source:7) at com.myappname.dating.ui.home.profileImageUploading.UserImageCropActivity$updateAvaterp$1.onResponse(UserImageCropActivity.kt:190) 

Solution – 1

I suggest not to use non-null assertion operator !! in places where a variable can be null . There is a safe call operator ?. for that purpose:

val pictureUrl = response.body()?.picurl pictureUrl?.let < picurl ->// Execute this block of code only when `pictureUrl` is not null val updateCheck = UpdateTaskA( [email protected], picurl, userResponse.id ).execute().get() > 

Solution – 2

Your stacktrace is saying that you’re passing null for the avatar parameter in the UpdateTaskA constructor, which is being called from the onResponse function inside UpdateAvaterp

// avatar is a String, not a String? so it can't be null class UpdateTaskA(var context: UserImageCropActivity, var avatar: String,var id : Int) 

// inside your on onResponse function UpdateTaskA([email protected], response.body(). picurl, userResponse.id ) 

So you’re passing response.body(). picurl as your avatar parameter, but it’s null. So your response doesn’t have that value. You either need to handle the possibility that it’s null, or if that should never happen (which is a risky assumption when calling an API that could change) then you need to work out what the problem is with the network call and fix it.

Easiest way is probably setting a breakpoint inside onResponse and inspecting the response to see what it contains, and if there’s any info about why you’re not getting the data you want. If you haven’t used the debugger before, here’s an overview – it can save you a lot of time!

Solution – 3

Instead you can use java.util.concurrent.Executors or just Kotlin Coroutines to handle doing stuff asynchronously.

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