C-Bk :
I have one main activity with a login button, and I keep a token when a user logs in (saved preferences). If the user is logged in, the app goes straight to my second activity, which is SearchActivity. I have added a logout button there, but I cant seem to make it work. I want it to release the saved token. I'm new to Kotlin and Android, so any help would be really useful.
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
login_button.setOnClickListener {
buttonClicked()
}
if (getTokenFromPrefs()?.length!! > 0) {
openSearchActivity()
}
}
private fun buttonClicked() {
val username = username_edittext.text.toString()
val password = password_edittext.text.toString()
val call = RequestManager.service.login(username, password)
call.enqueue(object : Callback<List<LoginResponse>> {
override fun onResponse(
call: Call<List<LoginResponse>>,
response: Response<List<LoginResponse>>
) {
loader.visibility = View.GONE
if (response.isSuccessful) {
openSearchActivity()
saveTokenToPrefs("token")
} else {
}
}
override fun onFailure(call: Call<List<LoginResponse>>, t: Throwable) {
loader.visibility = View.GONE
}
})
}
val TOKENPREFSKEY = "tokenprefskey"
private fun saveTokenToPrefs(token: String) {
val pref = applicationContext.getSharedPreferences("CGEEnergy", 0)
val editor = pref.edit()
editor.putString(TOKENPREFSKEY, token)
editor.commit()
}
private fun getTokenFromPrefs(): String? {
val pref = applicationContext.getSharedPreferences("CGEEnergy", 0)
return pref.getString(TOKENPREFSKEY, "")
}
private fun openSearchActivity() {
val intent = Intent(this, SearchActivity::class.java)
startActivity(intent)
finish()
}
My search activity class is this (kind of empty for now):
class SearchActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_search)
}
override fun onResume() {
super.onResume()
}
}
Littlish :
Maybe try this:
applicationContext.getSharedPreferences("CGEEnergy", 0).edit().clear().commit()