如何解决SwipeRefershLayout 在 Android 中不起作用
SwipeRefershLayout 不适用于 Android。
这是我的 XML 代码:
//other code
.....
<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
android:id="@+id/swipeRefreshLayout"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/searchCardView">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="8dp"
tools:listitem="@layout/room_dashboard_sample"/>
</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
.....
//other codes
这是我的主要活动:
modelList = new ArrayList<>();
dashboardAdapter = new DashboardAdapter(this,modelList);
binding.recyclerView.setLayoutManager(new linearlayoutmanager(this));
binding.recyclerView.setAdapter(dashboardAdapter);
modelList.clear();
firestore.collection("Rooms").orderBy("timestamp",Query.Direction.DESCENDING).get().addOnSuccessListener(queryDocumentSnapshots -> {
List<DocumentSnapshot> list = queryDocumentSnapshots.getDocuments();
for (DocumentSnapshot d : list) {
DashboardModel obj = d.toObject(DashboardModel.class);
modelList.add(obj);
}
dashboardAdapter.notifyDataSetChanged();
}).addOnFailureListener(e -> Timber.d("onFailure: %s",e.getMessage()));
//please give attension in this below code!
binding.swipeRefreshLayout.setonRefreshListener(() -> {
dashboardAdapter.notifyDataSetChanged();
binding.swipeRefreshLayout.setRefreshing(false);
});
解决方法
最好创建一个特定的方法来调用数据库。您可以将它们封装在一个方法中。
private void getRoomsList(){
firestore.collection("Rooms").orderBy("timestamp",Query.Direction.DESCENDING).get().addOnSuccessListener(queryDocumentSnapshots -> {
List<DocumentSnapshot> list = queryDocumentSnapshots.getDocuments();
for (DocumentSnapshot d : list) {
DashboardModel obj = d.toObject(DashboardModel.class);
modelList.add(obj);
}
dashboardAdapter.notifyDataSetChanged();
}).addOnFailureListener(e -> Timber.d("onFailure: %s",e.getMessage()));
}
然后,您只需在 onCreate
和 swipeRefreshLayout
内调用它。
binding.swipeRefreshLayout.setOnRefreshListener(() -> {
getRoomList();
binding.swipeRefreshLayout.setRefreshing(false);
});
为了更好的方法,您可以在 setRefreshing
之后调用 notifyDataSetChanged
并将其从 getRoomList
下方删除,如下所示:
//another code...
dashboardAdapter.notifyDataSetChanged();
binding.swipeRefreshLayout.setRefreshing(false); //place it here
在 swipeRefreshLayout
时。
binding.swipeRefreshLayout.setOnRefreshListener(() -> {
getRoomList();
});
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