If you want the Negative button to not execute any command when clicked, you can specify null
.setNegativeButton("Cancel", null)
or if we want to run stuff when Cancel is clicked
.setNegativeButton("Cancel") { dialog, which ->
variable = true
Toast.makeText(this, "Cancel hit!", Toast.LENGTH_SHORT).show()}
.create()?.show()In Kotlin you can request if the WiFi adapter is on or off with the following code
This changes the text on a textbox, replace with your textbox.
wifiManager = this.applicationContext.getSystemService(Context.WIFI_SERVICE) as WifiManager
textBox.text = "WiFi State = ${wifiManager.wifiState}"
The important part is
wifiManager.wifiState
It will return a number from 0-4 which indicates if it is on or off.
0 = WiFi is being disabled
1 = WiFi Disabled
2 = WiFi is being enabled
3 = WiFi is Enabled
4 = Error
The problem is that the code in SettingsActivity is not tied to the settings_activity.xml file. So it is using the activity_main.xml instead. It does in fact switch activities, the header at the top shows that it is in the Settings, but it shows the same information on the Main Activity. Problem showed up after copying and pasting code.
Check the following line under the initial onCreate function
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main) // <-- Should be R.layout.settings_activityThe setContentView line should reflect the Layout XML file under res -> layout -> settings_activity.xml
You need to use a Theme.AppCompat theme (or descendant) with this activity.
Looks like you can get the above error resolved by adding the following to the Android Manifest file.
android:theme="@style/Theme.AppCompat.Light
val textBoxVar: TextView = findViewById(R.id.textBoxID) textBoxVar.text = "Hello World!"
val buttonVar: Button = findViewById(R.id.buttonID)
buttonVar.setOnClickListener {
buttonVar.text = "Button Pushed..." //Change text on button
}
val text = "Hello World! This is a toast message!" val duration = Toast.LENGTH_SHORT val toast = Toast.makeText(applicationContext, text, duration) toast.show()