将b
初始化为intent.extra
时类型不匹配。尽管b
的类型为Bundle?
,并且intent.extra
的值不为null
,并且Bundle
也不可以为空。
请为此问题提出解决方案。当安装在android手机上并可以运行时,该应用始终崩溃。
代码主体中的以下代码段仅显示警告,但最终仅在启动时导致应用程序崩溃。
import android.app.Activity
import android.content.Context
import android.content.Intent
import android.graphics.Bitmap
import android.graphics.BitmapFactory
import android.graphics.drawable.BitmapDrawable
import android.os.Bundle
import android.provider.MediaStore
import android.support.design.widget.Snackbar
import android.support.design.widget.NavigationView
import android.support.v4.view.GravityCompat
import android.support.v7.app.ActionBarDrawerToggle
import android.support.v7.app.AppCompatActivity
import android.view.Menu
import android.view.MenuItem
import android.view.View
import android.view.ViewGroup
import android.widget.BaseAdapter
import android.widget.Toast
import com.example.debo.kickv01.R.id.lvTweets
import kotlinx.android.synthetic.main.activity_navig.*
import kotlinx.android.synthetic.main.app_bar_navig.*
import com.example.debo.kickv01.saved
import com.example.debo.kickv01.login as lg
import com.google.firebase.auth.FirebaseAuth
import com.google.firebase.database.FirebaseDatabase
import com.google.firebase.storage.FirebaseStorage
import kotlinx.android.synthetic.main.activity_login.*
import kotlinx.android.synthetic.main.activity_saved.view.*
import java.io.ByteArrayOutputStream
import java.text.SimpleDateFormat
import java.util.*
class navig : AppCompatActivity(), NavigationView.OnNavigationItemSelectedListener {
private var mAuth: FirebaseAuth?=null
private var database= FirebaseDatabase.getInstance()
private var myRef = database.reference
var list_T=ArrayList<ticket>()
var adaptor:MyPrjAdaptor?=null
var UserUID:String?=null
var myEmail:String?=null
// var b:Bundle= intent.extras
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_navig)
val toolbar= null
var b:Bundle = intent.extras
myEmail = b.getString("email")
UserUID = b.getString("uid")
list_T.add(ticket("0","him","url","add"))
list_T.add(ticket("0","him","url","debo"))
list_T.add(ticket("0","him","url","debo_2"))
adaptor=MyPrjAdaptor(this,list_T)
lvTweets.adapter=adaptor
fab.setOnClickListener { view ->
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show()
}
val toggle = ActionBarDrawerToggle(
this, drawer_layout, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close)
drawer_layout.addDrawerListener(toggle)
toggle.syncState()
nav_view.setNavigationItemSelectedListener(this)
}
override fun onNavigationItemSelected(item: MenuItem): Boolean {
// Handle navigation view item clicks here.
when (item.itemId) {
R.id.nav_home -> {
// Handle the camera action
var intent = Intent(this, navig::class.java)
startActivity(intent)
}
R.id.nav_explore -> {
var intent = Intent(this, explore::class.java)
startActivity(intent)
}
R.id.nav_Saved -> {
var intent = Intent(this, saved::class.java)
startActivity(intent)
}
R.id.nav_actions -> {
var intent = Intent(this, actions::class.java)
startActivity(intent)
}
R.id.nav_login -> {
var intent = Intent(this, com.example.debo.kickv01.login::class.java)
startActivity(intent)
}
}
drawer_layout.closeDrawer(GravityCompat.START)
return true
}
inner class MyPrjAdaptor: BaseAdapter{
var listNotesAdaptor= ArrayList<ticket>()
var context:Context?=null
constructor(context: Context,listNotesAdaptor: ArrayList<ticket>):super(){
this.listNotesAdaptor=listNotesAdaptor
this.context=context
}
override fun getView(position: Int, convertView: View?, parent: ViewGroup?): View {
var myTweet=listNotesAdaptor[position]
if (myTweet.tweetPersonUID.equals("add")) {
var myView = layoutInflater.inflate(R.layout.activity_saved, null)
myView.etAttach.setOnClickListener {
loadImage()
}
myView.etPost.setOnClickListener {
myRef.child("posts").push().setValue(PostInfo(UserUID!!,
myView.etProject.text.toString(),
myView.etDescription.text.toString(),
DownloadURL!!))
}
return myView
}else{
var myView = layoutInflater.inflate(R.layout.activity_explore, null)
return myView
}
}
override fun getItem(position: Int): Any {
return listNotesAdaptor[position]
}
override fun getItemId(position: Int): Long {
return position.toLong()
}
override fun getCount(): Int {
return listNotesAdaptor.size
}
}
override fun onBackPressed() {
if (drawer_layout.isDrawerOpen(GravityCompat.START)) {
drawer_layout.closeDrawer(GravityCompat.START)
} else {
super.onBackPressed()
}
}
override fun onCreateOptionsMenu(menu: Menu): Boolean {
// Inflate the menu; this adds items to the action bar if it is present.
menuInflater.inflate(R.menu.navig, menu)
return true
}
override fun onOptionsItemSelected(item: MenuItem): Boolean {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
when (item.itemId) {
R.id.action_settings -> return true
else -> return super.onOptionsItemSelected(item)
}
}
var PICK_IMAGE_CODE=123
fun loadImage(){
var intent=Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI)
startActivityForResult(intent, PICK_IMAGE_CODE)
}
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?)
{
super.onActivityResult(requestCode, resultCode, data)
if(requestCode==PICK_IMAGE_CODE && resultCode== Activity.RESULT_OK && data!=null){
val selectedImage=data.data
val filePathColum = arrayOf(MediaStore.Images.Media.DATA)
val cursor= contentResolver.query(selectedImage,filePathColum,null,null,null)
cursor.moveToFirst()
val columIndex= cursor.getColumnIndex(filePathColum[0])
val picturepath= cursor.getString(columIndex)
cursor.close()
UploadImage(BitmapFactory.decodeFile(picturepath))
}
}
var DownloadURL:String?=null
fun UploadImage(bitmap: Bitmap){
var currentUser= mAuth!!.currentUser
val storage = FirebaseStorage.getInstance()
val storageRef= storage.getReferenceFromUrl("gs://kick-13840.appspot.com")
val df= SimpleDateFormat("ddMMyyHHmmss")
val dataobj= Date()
val imagePath= SplitString(myEmail!!) + "."+ df.format(dataobj)+ ".jpg"
val ImageRef= storageRef.child("imagePost/"+imagePath)
val baos= ByteArrayOutputStream()
bitmap.compress(Bitmap.CompressFormat.JPEG,100,baos)
val data=baos.toByteArray()
val uploadTask=ImageRef.putBytes(data)
uploadTask.addOnFailureListener{
Toast.makeText(applicationContext,"fail to upload", Toast.LENGTH_LONG).show()
}.addOnSuccessListener { taskSnapshot ->
DownloadURL = taskSnapshot.storage.downloadUrl.toString()
}
}
fun SplitString(email: String):String{
val split= email.split("@")
return split[0]
}
}
答案 0 :(得分:0)
b的类型为Bundle
,而IDE指示intent.extras返回Bundle?
({Intent.getExtras()
用@Nullable
注释,如果您查看它的代码)。 。您需要使用非空声明运算符!!,或将b更改为键入Bundle?
。