如何修复后退按钮失真的片段？
我有一个包含此布局的片段：
如果我点击一个按钮，我会在Recyclerview中看到一个列表，所有内容都显示正常但是在按下后我有按钮失真：
这是第一个片段的xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/category_events_layout"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context=".Fragments.FragmentCategoryEvents"
android:orientation="vertical"
android:weightSum="10">
<RelativeLayout
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="0dp">
<TextView
android:id="@+id/textGrid"
android:text="Scegli una categoria"
android:textSize="25sp"
android:layout_centerInParent="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
<GridLayout
android:columnCount="2"
android:rowCount="2"
android:alignmentMode="alignMargins"
android:columnOrderPreserved="false"
android:layout_weight="8"
android:layout_width="match_parent"
android:layout_height="0dp"
android:padding="14dp">
<!-- Riga 1 -->
<!-- Colonna 1 -->
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_margin="12dp"
></LinearLayout>
<Button
android:id="@+id/btn_auto"
android:text="Auto"
android:textSize="18sp"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</android.support.v7.widget.CardView>
<!-- colonna 2 -->
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_margin="12dp"
></LinearLayout>
<Button
android:id="@+id/btn_moto"
android:text="Moto"
android:textSize="18sp"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</android.support.v7.widget.CardView>
<!-- Riga 2 -->
<!-- Colonna 1 -->
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_margin="12dp"
></LinearLayout>
<Button
android:id="@+id/btn_corsa"
android:text="Corsa"
android:textSize="18sp"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</android.support.v7.widget.CardView>
<!-- colonna 2 -->
<android.support.v7.widget.CardView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_columnWeight="1"
android:layout_rowWeight="1"
android:layout_marginBottom="16dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
app:cardElevation="8dp"
app:cardCornerRadius="8dp">
<LinearLayout
android:layout_gravity="center_horizontal|center_vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_margin="16dp"
></LinearLayout>
<Button
android:id="@+id/btn_bicicletta"
android:text="Bicicletta"
android:textSize="18sp"
android:layout_gravity="center_horizontal|center_vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</android.support.v7.widget.CardView>
</GridLayout>
</LinearLayout>
这是片段代码：
public class FragmentCategoryEvents extends Fragment {
private Button btn_auto;
private Button btn_moto;
private Button btn_corsa;
private Button btn_bicicletta;
public FragmentCategoryEvents() {
// Required empty public constructor
}
public static FragmentCategoryEvents newInstance() {
FragmentCategoryEvents fragment = new FragmentCategoryEvents();
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_fragment_category_events, container, false);
return view;
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState){
super.onViewCreated(view, savedInstanceState);
btn_auto = view.findViewById(R.id.btn_auto);
btn_moto = view.findViewById(R.id.btn_moto);
btn_corsa = view.findViewById(R.id.btn_corsa);
btn_bicicletta = view.findViewById(R.id.btn_bicicletta);
btn_auto.setOnClickListener(v -> getCategoryEvents("Auto"));
btn_moto.setOnClickListener(v-> getCategoryEvents("Moto"));
btn_corsa.setOnClickListener(v -> getCategoryEvents("Corsa"));
btn_bicicletta.setOnClickListener(v -> getCategoryEvents("Bicicletta"));
}
private void getCategoryEvents(String category){
FragmentShowCategory newFragment = new FragmentShowCategory();
FragmentTransaction transaction = getFragmentManager().beginTransaction();
Bundle bundle = new Bundle();
bundle.putString("category_key",category);
newFragment.setArguments(bundle);
transaction.replace(R.id.category_events_layout,newFragment);
transaction.addToBackStack(null);
transaction.commit();
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
}
@Override
public void onDetach() {
super.onDetach();
}
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
}
按下按钮我有这个布局：
<?xml version="1.0" encoding="utf-8"?> <android.support.v4.widget.SwipeRefreshLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/swipe_container_category"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/recycler_view_category"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v4.widget.SwipeRefreshLayout>
代码：
public class FragmentShowCategory extends Fragment {
private RecyclerView mRecyclerView;
private SwipeRefreshLayout mSwipeRefreshLayout;
private CompositeSubscription mCompositeSubscription;
public FragmentShowCategory() {
// Required empty public constructor
}
public static FragmentShowCategory newInstance() {
FragmentShowCategory fragment = new FragmentShowCategory();
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_fragment_show_category, container, false);
}
@SuppressLint("ResourceAsColor")
@Override
public void onViewCreated (View view, @Nullable Bundle savedInstanceState){
mRecyclerView = view.findViewById(R.id.recycler_view_category);
mRecyclerView.setAdapter(new RecyclerViewAdapter(null));
mRecyclerView.setLayoutManager(null);
mSwipeRefreshLayout = view.findViewById(R.id.swipe_container_category);
Bundle bundle = getArguments();
mCompositeSubscription = new CompositeSubscription();
categoryEventsProcess(bundle.getString("category_key"));
mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
mSwipeRefreshLayout.post(new Runnable() {
@Override
public void run() {
mSwipeRefreshLayout.setRefreshing(true);
categoryEventsProcess(bundle.getString("category_key"));
}
});
}
});
}
public void onBackPressed()
{
FragmentManager fm = getActivity().getSupportFragmentManager();
fm.popBackStack();
}
private void categoryEventsProcess(String category){
mCompositeSubscription.add(NetworkUtil.getRetrofit().getEventsByCategory(category)
.observeOn(AndroidSchedulers.mainThread())
.subscribeOn(Schedulers.io())
.subscribe(this::handleResponse,this::handleError));
}
private void handleResponse(ArrayList<Evento> eventos) {
RecyclerViewAdapter adapter = new RecyclerViewAdapter(eventos);
LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
mRecyclerView.setLayoutManager(layoutManager);
mRecyclerView.setAdapter(adapter);
mSwipeRefreshLayout.setRefreshing(false);
}
private void handleError(Throwable throwable) {
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
}
@Override
public void onDetach() {
super.onDetach();
}
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
}
如何解决此问题？
1 个答案:
答案 0 :(得分：0)
解决了在Cardview中删除layout_columnWeight和layout_rowWeight属性以及设置layout_width和layout_height的问题。
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