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class NormalActivity : AppCompatActivity(), NormalDialogFragment.NormalDialogListener { | |
override fun onCreate(savedInstanceState: Bundle?) { | |
super.onCreate(savedInstanceState) | |
setContentView(R.layout.activity_normal) | |
val button = findViewById<Button>(R.id.normalButton) | |
button.setOnClickListener { showNormalDialog() } | |
} | |
private fun showNormalDialog() = | |
NormalDialogFragment.newInstance("Normal Dialog") | |
.show(supportFragmentManager, "NormalDialog") | |
override fun showNegativeToast() = | |
Toast.makeText(this, "Negative button", Toast.LENGTH_SHORT).show() | |
override fun showPositiveToast() = | |
Toast.makeText(this, "Positive button", Toast.LENGTH_SHORT).show() | |
} | |
class NormalDialogFragment() : DialogFragment() { | |
interface NormalDialogListener { | |
fun showNegativeToast() | |
fun showPositiveToast() | |
} | |
companion object { | |
const val KEY_TITLE = "KEY_TITLE" | |
fun newInstance(title: String) = | |
NormalDialogFragment().apply { | |
arguments = Bundle().apply { | |
putString(KEY_TITLE, title) | |
} | |
} | |
} | |
private val title by lazy { checkNotNull(arguments).getString(KEY_TITLE) } | |
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog { | |
val listener = activity as NormalDialogFragment.NormalDialogListener | |
return AlertDialog.Builder(activity) | |
.setTitle(title) | |
.setMessage("This is a normal dialog") | |
.setPositiveButton("Continue") { dialog, which -> listener.showPositiveToast() } | |
.setNegativeButton("Go back") { dialog, which -> listener.showNegativeToast() } | |
.create() | |
} | |
} |
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