当我从Firebase注销时,我的应用程序崩溃。我检查了logcat,它显示了以下堆栈跟踪。
io.reactivex.exceptions.UndeliverableException: java.lang.Throwable: Permission denied
at io.reactivex.plugins.RxJavaPlugins.onError(RxJavaPlugins.java:349)
at io.reactivex.internal.operators.observable.ObservableCreate$CreateEmitter.onError(ObservableCreate.java:74)
at messenger.tarang.com.messenger.allusers.AllUsers$loadUsers$1$1.onCancelled(AllUsers.kt:78)
at com.google.android.gms.internal.zzecw.zza(Unknown Source)
at com.google.android.gms.internal.zzehy.zzbyc(Unknown Source)
at com.google.android.gms.internal.zzeig.run(Unknown Source)
at android.os.Handler.handleCallback(Handler.java:742)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:5527)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629)
Caused by: java.lang.Throwable: Permission denied
at messenger.tarang.com.messenger.allusers.AllUsers$loadUsers$1$1.onCancelled(AllUsers.kt:78)Â
at com.google.android.gms.internal.zzecw.zza(Unknown Source)Â
at com.google.android.gms.internal.zzehy.zzbyc(Unknown Source)Â
at com.google.android.gms.internal.zzeig.run(Unknown Source)Â
at android.os.Handler.handleCallback(Handler.java:742)Â
at android.os.Handler.dispatchMessage(Handler.java:95)Â
at android.os.Looper.loop(Looper.java:154)Â
at android.app.ActivityThread.main(ActivityThread.java:5527)Â
at java.lang.reflect.Method.invoke(Native Method)Â
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)Â
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629)Â
下面是出现问题的代码。
Observable.create<DataSnapshot>{ emitter ->
databaseReference
?.child("Users")
?.addChildEventListener(object : ChildEventListener{
override fun onCancelled(p0: DatabaseError?) {
if(!emitter.isDisposed){
emitter.onError(Throwable(p0.message))
}
}
override fun onChildMoved(p0: DataSnapshot?, p1: String?) {
}
override fun onChildChanged(p0: DataSnapshot?, p1: String?) {
}
override fun onChildAdded(p0: DataSnapshot?, p1: String?) {
if(!emitter.isDisposed)
emitter.onNext(p0!!)
}
override fun onChildRemoved(p0: DataSnapshot?) {
}
})
}.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(object : Observer<DataSnapshot>{
override fun onComplete() {
}
override fun onNext(t: DataSnapshot) {
val userModel = t.getValue(UserModel::class.java)
userModel?.uid = t.key
userAdapter?.addData(userModel!!)
}
override fun onSubscribe(d: Disposable) {
compositeDisposable?.add(d)
}
override fun onError(e: Throwable) {
e.printStackTrace()
}
})
下面是我正在执行注销操作的帐户设置类。如果我发表评论
emitter.onError()
在上面的代码中,我没有得到任何异常。
class AccountSettings internal constructor(): AppCompatActivity(), View.OnClickListener {
var toolbar : Toolbar ?= null
var toolbar_text : TextView ?= null
var logout_text : TextView ?= null
var firebaseAuth : FirebaseAuth ?= null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.account_settings)
initialize()
}
override fun onStart() {
super.onStart()
logout_text?.setOnClickListener(this)
}
fun initialize(){
firebaseAuth = FirebaseAuth.getInstance()
logout_text = findViewById(R.id.logout_text)
toolbar = findViewById(R.id.toolbar)
toolbar_text = toolbar?.findViewById(R.id.toolbar_text1)
toolbar_text?.setText("Account Settings")
toolbar_text?.visibility= View.VISIBLE
setSupportActionBar(toolbar)
}
fun logout() {
try {
firebaseAuth?.signOut()
displayMessage("logout successfully")
goToMainActivity()
}
catch(ex : Exception){
ex.printStackTrace()
displayMessage("you are not connected to Internet")
}
}
fun goToMainActivity() {
var intents = Intent (this,CheckAuthenticate::class.java)
intents.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK or Intent.FLAG_ACTIVITY_NEW_TASK)
startActivity(intents)
finish()
}
fun displayMessage(message: String) {
Toast.makeText(this,message,Toast.LENGTH_SHORT).show()
}
override fun onClick(p0: View?) {
when(p0?.id){
R.id.logout_text ->{
logout()
}
}
}
override fun onDestroy() {
super.onDestroy()
}
}
我应该怎么做才能让它工作?我应该如何正确处理此异常,以便我的应用程序不会崩溃?请帮助任何人。。。
