Jetpack compose 中的 AppCompatActivity 而不是 ComponentActivity [英] AppCompatActivity instead of ComponentActivity in Jetpack compose
问题描述
我想在 Jetpack compose 中单击按钮打开 datePicker
对话框.
为此,我在按钮的 onClick
操作中使用以下代码.
I want to open datePicker
dialog on a button click in Jetpack compose.
For that, I am using the below code inside the button's onClick
action.
val context = LocalContext.current
Button(onClick = {
(context as AppCompatActivity).let {
val picker = MaterialDatePicker.Builder.datePicker().build()
picker.show(it.supportFragmentManager, picker.toString())
picker.addOnPositiveButtonClickListener {
// some code
}
}
})
如果我使用的是 ComponentActivity
,则不支持 supportFragmentManager
.
可以从 AppCompatActivity
扩展 Activity 吗?
或者有没有其他办法,如果上述解决方案不正确,我可以得到解决方案?
If I am using the ComponentActivity
, supportFragmentManager
is not supported.
Is it fine to extend the activity from AppCompatActivity
?
Or is there any other way, I can get the solution if the above-mentioned solution is not correct?
推荐答案
您可以使用 AppCompatActivity
因为它扩展了 FragmentActivity
扩展了 ComponentActivity
.
You can use the AppCompatActivity
since it extends FragmentActivity
which extends ComponentActivity
.
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
val activity = LocalContext.current as AppCompatActivity
Button(onClick={ showDatePicker(activity)}){
Text("Picker")
}
}
}
}
fun showDatePicker(activity: AppCompatActivity){
val picker = MaterialDatePicker.Builder.datePicker().build()
activity?.let {
picker.show(it.supportFragmentManager, picker.toString())
picker.addOnPositiveButtonClickListener {
}
}
}
注意:它至少需要 AppCompat 1.3.0
版本.
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