i撞到
重复ID,标签null或父级,带有另一个片段 plopeautocompletefragment
错误,因此我遵循了此解决方案,通过使用childFragmentManager
片段类onCreateView
val fm: FragmentManager = childFragmentManager
var placeAutocompleteFragment: PlaceAutocompleteFragment? = fm.findFragmentByTag("placeAutocompleteFragment") as PlaceAutocompleteFragment?
if (placeAutocompleteFragment == null){
placeAutocompleteFragment = PlaceAutocompleteFragment()
fm.beginTransaction().add(R.id.address_layout, placeAutocompleteFragment, "placeAutocompleteFragment").commit()
}
.xml
<android.support.constraint.ConstraintLayout
...
...
...
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:id="@+id/address_layout"
android:background="@drawable/rounded_search_bar"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.0"
android:layout_marginTop="8dp" app:layout_constraintTop_toTopOf="parent"
android:orientation="horizontal">
</LinearLayout>
...
...
...
</android.support.constraint.ConstraintLayout>
现在的问题在线
fm.beginTransaction().add(R.id.address_layout, placeAutocompleteFragment, "placeAutocompleteFragment").commit()
我遇到了placeAutocompleteFragment
类型不匹配的类型错误。必需:碎片,发现:placeautocompletefragment?
有什么建议?
谢谢
问题
GetChildFragmentManager将返回FragmentManager的支持库版本。因此,您应该传递继承片段库版本的片段对象。
但是placeAutoCompleteFragment继承Android.App.Fragment。
解决方案
使用supportplaceococtletefragment而不是popeautocompletefragment。