我正在尝试使用kotlin使用AlertDialog类创建自定义对话框,在这里我首先要做的是对话框的类
class CreateDialogForProduct : AppCompatDialogFragment() {
lateinit var nameET: EditText
lateinit var barcodeET: EditText
lateinit var detailsET: EditText
lateinit var saveBtn: Button
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
var builder = AlertDialog.Builder(activity)
val inflater = layoutInflater
var view = inflater.inflate(R.layout.layout_dailog,null)
builder.setView(view)
builder.setTitle("Save Product")
builder.setCancelable(true)
nameET = view.findViewById(R.id.name_tv)
barcodeET = view.findViewById(R.id.barcode_tv)
detailsET = view.findViewById(R.id.details_tv)
saveBtn = view.findViewById(R.id.save_btn)
return builder.create()
}
}
这就是我在面对问题的活动中如何称呼它
fun openDialog(){
val dialog = CreateDialogForProduct()
dialog?.show(supportFragmentManager, null)
}
它给我一个错误,没有像supportFragmentManger这样的方法,我检查了这个答案,但是它的解决方案对我不起作用,有帮助吗?
您可以根据需要从AppCompatActivity扩展活动,这不是问题,但可以声明这样的方法,它将为您服务
fun openDialog(){
val dialog = CreateDialogForProduct()
dialog.show((activity as FragmentActivity).supportFragmentManager, null)
}
完整的活动课程将是这样的
lateinit var fab: FloatingActionButton
lateinit var activity:Activity
var onClickListener = View.OnClickListener() {
when (it.getId()) {
R.id.floatingActionButton -> openDialog()
}
}
fun openDialog(){
val dialog = CreateDialogForProduct()
dialog.show((activity as FragmentActivity).supportFragmentManager, null)
}
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
activity = this
fab = findViewById(R.id.floatingActionButton)
fab.setOnClickListener(onClickListener)
}
}
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