我正在尝试将图像上传到网站，它成功了，但应用程序显示FETAL错误。
这个问题在AsyncTask中似乎很常见，因为它可能会提前执行。
我还将SDK版本30升级到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<ProfileStatus> {
override fun onFailure(call: Call<ProfileStatus>, 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<ProfileStatus>,
response: Response<ProfileStatus>
) {
if (response.isSuccessful) {
val updateCheck = UpdateTaskA(
this@UserImageCropActivity, 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<ProfileStatus> {
override fun onFailure(call: Call<ProfileStatus>, t: Throwable) {
Toast.makeText(applicationContext, "Failed to upload please select another image or check internet", Toast.LENGTH_SHORT)
.show()
}
override fun onResponse(
call: Call<ProfileStatus>,
response: Response<ProfileStatus>
) {
if (response.isSuccessful) {
val updateCheck = UpdateTaskG(this@UserImageCropActivity, 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<ProfileStatus> {
override fun onFailure(call: Call<ProfileStatus>, t: Throwable) {
Toast.makeText(applicationContext, "Failed to upload please select another image or check internet", Toast.LENGTH_SHORT)
.show()
}
override fun onResponse(
call: Call<ProfileStatus>,
response: Response<ProfileStatus>
) {if (response.isSuccessful) {
// val updateCheck = UpdateTaskG(this@UserImageCropActivity, 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<ProfileStatus> {
override fun onFailure(call: Call<ProfileStatus>, t: Throwable) {
Toast.makeText(applicationContext, "Failed to upload please select another image or check internet", Toast.LENGTH_SHORT)
.show()
}
override fun onResponse(
call: Call<ProfileStatus>,
response: Response<ProfileStatus>
) {
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<Mediafile>
// 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<Mediafile>?) :
AsyncTask<Void, Void, Boolean>() {
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<Void, Void, Boolean>() {
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<Void, Void, Boolean>() {
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<Void, Void, UserResponse>() {
override fun doInBackground(vararg params: Void?): UserResponse {
var listOfdata = context.mCrushDataBase!!.crushDao().getData()
val data = listOfdata[0]
return data
}
override fun onPostExecute(userResponse: UserResponse?) {
}
}
}
行显示错误
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.<init>(Unknown
Source:7)
at com.myappname.dating.ui.home.profileImageUploading.UserImageCropActivity$updateAvaterp$1.onResponse(UserImageCropActivity.kt:190)
您的stacktrace表示您正在为UpdateTaskA构造函数中的avatar参数传递null，该参数是从UpdateAvaterp内的onResponse函数调用的
// 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(this@UserImageCropActivity, response.body()!!.picurl, userResponse.id )
所以您将response.body()!!.picurl作为avatar参数传递，但它为null。所以你的回应没有那个价值。你要么需要处理为null的可能性，要么如果这种情况永远不会发生(这是调用API时的一个风险假设，可能会发生变化(，那么你需要找出网络调用的问题并修复它
最简单的方法可能是在onResponse中设置一个断点，并检查响应以查看它包含的内容，以及是否有任何关于您没有获得所需数据的信息。如果你以前没有使用过调试器，这里有一个概述-它可以为你节省很多时间！
也因为AsyncTask早就被弃用了https://android-review.googlesource.com/c/platform/frameworks/base/+/1156409我建议不要使用它。
相反，您可以使用java.util.concurrent.Executors或仅使用Kotlin Coroutines来异步处理事务。
我建议不要在变量可以是null的地方使用非null断言运算符!!。有一个安全呼叫操作员?.用于此目的：
val pictureUrl = response.body()?.picurl
pictureUrl?.let { picurl ->
// Execute this block of code only when `pictureUrl` is not null
val updateCheck = UpdateTaskA(
this@UserImageCropActivity,
picurl,
userResponse.id
).execute().get()
}