Java RecyclerView项目可单击但不可见
我为这个问题挣扎了几天。 真奇怪。 我有一个具有以下结构的片段Java RecyclerView项目可单击但不可见,java,android,android-recyclerview,Java,Android,Android Recyclerview,我为这个问题挣扎了几天。 真奇怪。 我有一个具有以下结构的片段 ScrollView ConstraintLayout TextView1 TwoWayView1 TextView2 TwoWayView2 TwoWayView（RecyclerView库）正在填充项目， 我添加了一个McClickListener来测试项目是否确实存在。 所以当我点击物品所在区域的空白处时。它给了我该项目的正确位置和名称。但该项目不可见
ScrollView
ConstraintLayout
TextView1
TwoWayView1
TextView2
TwoWayView2
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0"
tools:context="EventsFragment">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/tvHeaderSocialEvents"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="32dp"
android:text="Social Events"
android:textSize="24sp"
android:textStyle="bold"
app:layout_constraintHorizontal_bias="0.033"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:layout_constraintLeft_creator="1"
tools:layout_constraintRight_creator="1"
tools:layout_constraintTop_creator="1" />
<org.lucasr.twowayview.widget.TwoWayView
android:id="@+id/lvSocialEvents"
style="@style/TwoWayView"
android:layout_width="0dp"
android:layout_height="260dp"
android:layout_marginTop="8dp"
android:clipChildren="true"
android:clipToPadding="false"
android:drawSelectorOnTop="false"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/tvHeaderSocialEvents"
tools:context=".activities.MenuGuillotineActivity"
tools:layout_conversion_absoluteHeight="80dp"
tools:layout_conversion_absoluteWidth="395dp"
tools:layout_conversion_absoluteX="8dp"
tools:layout_conversion_absoluteY="68dp" />
<TextView
android:id="@+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="846dp"
android:text="temp"
app:layout_constraintTop_toTopOf="parent"
tools:layout_editor_absoluteX="175dp" />
<TextView
android:id="@+id/tvHeaderSportEvents"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="32dp"
android:text="Sport Events"
android:textSize="24sp"
app:layout_constraintHorizontal_bias="0.027"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/lvSocialEvents" />
<org.lucasr.twowayview.widget.TwoWayView
android:id="@+id/lvSportEvents"
style="@style/TwoWayView"
android:layout_width="0dp"
android:layout_height="80dp"
android:layout_marginTop="8dp"
android:drawSelectorOnTop="false"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/tvHeaderSportEvents"
tools:LayoutManager="TwoWayLayoutManager"
tools:context=".activities.MenuGuillotineActivity"
tools:layout_conversion_absoluteHeight="80dp"
tools:layout_conversion_absoluteWidth="395dp"
tools:layout_conversion_absoluteX="8dp"
tools:layout_conversion_absoluteY="68dp" />
<TextView
android:id="@+id/tvHeaderOfficialEvents"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="32dp"
android:text="Official Events"
android:textSize="24sp"
app:layout_constraintHorizontal_bias="0.025"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/lvSportEvents" />
<org.lucasr.twowayview.widget.TwoWayView
android:id="@+id/lvOfficialEvents"
style="@style/TwoWayView"
android:layout_width="0dp"
android:layout_height="80dp"
android:layout_marginTop="8dp"
android:drawSelectorOnTop="false"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/tvHeaderOfficialEvents"
tools:LayoutManager="TwoWayLayoutManager"
tools:context=".activities.MenuGuillotineActivity"
tools:layout_conversion_absoluteHeight="80dp"
tools:layout_conversion_absoluteWidth="395dp"
tools:layout_conversion_absoluteX="8dp"
tools:layout_conversion_absoluteY="68dp" />
</android.support.constraint.ConstraintLayout>
</ScrollView>
public class EventsFragment extends Fragment {
ArrayList<EventClass> eventClassArrayList;
RecyclerView.Adapter eventClassEventsAdapter;
TwoWayView lvSocialEvents;
View masterView;
TwoWayView lvSportEvents;
TwoWayView lvOfficialEvents;
StudentClass studentClass;
String studRank;
Context context;
public EventsFragment() {
// Required empty public constructor
}
private void createHeadings(View view) {
TextView lvHeaderSocialEvents = (TextView) view.findViewById(R.id.tvHeaderSocialEvents);
lvHeaderSocialEvents.setTypeface(EasyFonts.caviarDreamsBold(context));
TextView lvHeaderSportEvents = (TextView) view.findViewById(R.id.tvHeaderSportEvents);
lvHeaderSportEvents.setTypeface(EasyFonts.caviarDreamsBold(context));
TextView lvHeaderOfficialEvents = (TextView) view.findViewById(R.id.tvHeaderOfficialEvents);
lvHeaderOfficialEvents.setTypeface(EasyFonts.caviarDreamsBold(context));
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_events, container, false);
masterView = view;
// Get Application Context
context = getContext().getApplicationContext();
Fresco.initialize(context);
// Assign components
lvSocialEvents = (TwoWayView) view.findViewById(R.id.lvSocialEvents);
lvSocialEvents.setLayoutManager(new ListLayoutManager(context, TwoWayLayoutManager.Orientation.HORIZONTAL));
lvSocialEvents.setHasFixedSize(true);
lvSportEvents = (TwoWayView) view.findViewById(R.id.lvSportEvents);
lvSportEvents.setLayoutManager(new ListLayoutManager(context, TwoWayLayoutManager.Orientation.HORIZONTAL));
lvSportEvents.setHasFixedSize(true);
lvOfficialEvents = (TwoWayView) view.findViewById(R.id.lvOfficialEvents);
lvOfficialEvents.setLayoutManager(new ListLayoutManager(context, TwoWayLayoutManager.Orientation.HORIZONTAL));
lvOfficialEvents.setHasFixedSize(true);
createHeadings(view);
// Get global data
SharedPreferences global = context.getSharedPreferences("globalData", MODE_PRIVATE);
if (global.contains("student")) {
//Get json from SP and decode json to EmployeeClass.
SharedPreferences shared = context.getSharedPreferences("studentData", MODE_PRIVATE);
Gson gson = new Gson();
String json = shared.getString("studentObject", "");
studentClass = gson.fromJson(json, StudentClass.class);
studRank = studentClass.rank;
} else {
studRank = "0";
}
// Get all the events from the Web server
StringRequest stringRequest = new StringRequest(Request.Method.POST, getResources().getString(R.string.url_event), new Response.Listener<String>() {
@Override
public void onResponse(String output) {
if (!output.isEmpty()) {
ArrayList<CommunicationClass> data = new JsonConverter<CommunicationClass>().toArrayList(output, CommunicationClass.class);
CommunicationClass comm = data.get(0);
if (comm.code.equals("0")) {
// Create list for Events
eventClassArrayList = new JsonConverter<EventClass>().toArrayList(comm.info, EventClass.class);
// Create and add events to EventsAdapter and add to TwoWayView
eventClassEventsAdapter = new EventsAdapter(context,eventClassArrayList);
lvSocialEvents.setAdapter(eventClassEventsAdapter);
lvSportEvents.setAdapter(eventClassEventsAdapter);
lvOfficialEvents.setAdapter(eventClassEventsAdapter);
eventClassEventsAdapter.notifyDataSetChanged();
} else {
ErrorHandling.makeText(context,comm.code, false).show();
}
} else {
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {
ErrorHandling.makeText(context, volleyError).showVolley();
}
}) {
@Override
protected Map<String, String> getParams() throws AuthFailureError {
//POST data for PHP Script
HashMap<String, String> postDataEvents = new HashMap<String, String>();
postDataEvents.put("event", "true");
if (studRank.equals("0")) {
postDataEvents.put("token", "public");
} else {
postDataEvents.put("token", studentClass.token);
}
return postDataEvents;
}
};
MySingleton.getInstance(context).addToRequestQueue(stringRequest);
com.example.howldevelopment.bcofficial.interfaces.ItemClickSupport itemClickSupport = com.example.howldevelopment.bcofficial.interfaces.ItemClickSupport.addTo(lvSocialEvents);
itemClickSupport.setOnItemClickListener(new com.example.howldevelopment.bcofficial.interfaces.ItemClickSupport.OnItemClickListener() {
@Override
public void onItemClicked(RecyclerView recyclerView, int position, View v) {
Toast.makeText(context, eventClassArrayList.get(position).name, Toast.LENGTH_SHORT).show();
}
});
return view;
}
}
公共类事件片段扩展片段{
ArrayList eventClassArrayList；
适配器eventClassEventsAdapter；
双向视图LVSocialeEvents；
主视图；
双向观看体育赛事；
双向视图LV官方事件；
学生班学生班；
字符串studRank；
语境；
公共事件片段（）{
//必需的空公共构造函数
}
私有void createheaders（视图）{
TextView lvHeaderSocialEvents=（TextView）view.findViewById（R.id.tvHeaderSocialEvents）；
lvHeaderSocialEvents.setTypeface（EasyFonts.caviarDreamsBold（上下文））；
TextView lvHeaderSportEvents=（TextView）view.findViewById（R.id.tvHeaderSportEvents）；
设置字体（EasyFonts.caviarDreamsBold（上下文））；
TextView lvHeaderOfficialEvents=（TextView）view.findViewById（R.id.tvHeaderOfficialEvents）；
lvHeaderOfficialEvents.setTypeface（EasyFonts.caviarDreamsBold（上下文））；
}
@凌驾
创建视图上的公共视图（布局、充气机、视图组容器、，
Bundle savedInstanceState）{
//为该碎片膨胀布局
视图=充气机。充气（R.layout.fragment\u事件，容器，false）；
主视图=视图；
//获取应用程序上下文
context=getContext（）.getApplicationContext（）；
壁画初始化（上下文）；
//分配组件
lvSocialEvents=（双向视图）view.findViewById（R.id.lvSocialEvents）；
setLayoutManager（新的ListLayoutManager（上下文，TwoWayLayoutManager.Orientation.HORIZONTAL））；
lvSocialEvents.setHasFixedSize（true）；
lvSportEvents=（双向视图）view.findViewById（R.id.lvSportEvents）；
lvSportEvents.setLayoutManager（新的ListLayoutManager（context，TwoWayLayoutManager.Orientation.HORIZONTAL））；
lvSportEvents.setHasFixedSize（true）；
lvOfficialEvents=（双向视图）view.findViewById（R.id.lvOfficialEvents）；
setLayoutManager（新的ListLayoutManager（上下文，TwoWayLayoutManager.Orientation.HORIZONTAL））；
lvOfficialEvents.setHasFixedSize（true）；
创建标题（视图）；
//获取全局数据
SharedReferences global=context.getSharedReferences（“globalData”，MODE\u PRIVATE）；
if（全局包含（“学生”））{
//从SP获取json并将json解码到EmployeeClass。
SharedReferences shared=context.getSharedReferences（“studentData”，MODE\u PRIVATE）；
Gson Gson=新的Gson（）；
String json=shared.getString（“studentObject”和“”）；
studentClass=gson.fromJson（json，studentClass.class）；
studRank=studentClass.rank；
}否则{
studRank=“0”；
}
//从Web服务器获取所有事件
StringRequest StringRequest=newStringRequest（Request.Method.POST，getResources（）.getString（R.string.url\u事件），new Response.Listener（）{
@凌驾
公共void onResponse（字符串输出）{
如果（！output.isEmpty（））{
ArrayList data=new JsonConverter（）.toArrayList（输出，CommunicationClass.class）；
通信类comm=data.get（0）；
如果（通信代码等于（“0”））{
//创建事件列表
eventClassArrayList=新建JsonConverter（）.toArrayList（comm.info，EventClass.class）；
//创建事件并将其添加到EventsAdapter，然后添加到TwoWayView
eventClassEventsAdapter=新的EventsAdapter（上下文，eventClassArrayList）；
lvSocialEvents.setAdapter（eventClassEventsAdapter）；
设置适配器（eventClassEventsAdapter）；
lvOfficialEvents.setAdapter（eventClassEventsAdapter）；
eventClassEventsAdapter.notifyDataSetChanged（）；
}否则{
ErrorHandling.makeText（上下文，comm.code，false）.show（）；
}
}否则{
}
}
}，new Response.ErrorListener（）{
@凌驾
公共错误响应（截击错误截击错误）{
ErrorHandling.makeText（上下文，截击错误）.showVolley（）；
}
}) {
@凌驾
受保护的映射getParams（）引发AuthFailureError{
//PHP脚本的POST数据
HashMap postDataEvents=新HashMap（）；
postDataEvents.put（“事件”、“真”）；
if（studRank.equals（“0”））{
postDataEvents.put（“令牌”、“公共”）；
}否则{
postDataEvents.put（“token”，studentClass.token）；
}
返回postDataEvents；
}
};
getInstance（上下文）.addToRequestQueue（stringRequest）；
com.example.howldevelopment.bcofficial.interfaces.ItemClickSupport ItemClickSupport=com.example.howldevelopment.bcofficial.interfaces.ItemClickSupport.addTo（LVSocialeEvents）；
itemClickSupport.setOnItemClickListener（新的com.example.howldevelopment.bcofficial.interfaces.itemClickSupport.OnItemClickListener（）{
@凌驾
单击公共空视图（RecyclerView RecyclerView，内部位置，视图v）{
Toast.makeText（上下文，eventClassArrayList.get（position）.name，Toast.LENGTH_SHORT.show（）；
}
});
返回视图；
}
}
public class EventsAdapter extends RecyclerView.Adapter<EventsAdapter.EventViewHolder> {
private Context context;
private ArrayList<EventClass> events;
private LayoutInflater mInflater;
public EventsAdapter(Context context,ArrayList<EventClass> events) {
mInflater = LayoutInflater.from(context);
this.context = context;
this.events = events;
}
@Override
public EventViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = mInflater.inflate(R.layout.event_item_1, parent, false);
EventViewHolder holder = new EventViewHolder(view);
return holder;
}
@Override
public void onBindViewHolder(EventViewHolder holder, int position) {
Toast.makeText(context, events.get(position).name, Toast.LENGTH_SHORT).show();
holder.tvName.setText(events.get(position).name);
holder.tvDate.setText(events.get(position).date);
holder.tvCost.setText(events.get(position).cost);
holder.tvInterested.setText(events.get(position).interested);
}
@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
}
@Override
public int getItemCount() {
return events.size();
}
class EventViewHolder extends RecyclerView.ViewHolder {
TextView tvName;
TextView tvDate;
TextView tvCost;
TextView tvInterested;
ImageView imgPoster;
public EventViewHolder(View itemView) {
super(itemView);
tvName = (TextView) itemView.findViewById(R.id.tvEventName);
tvDate = (TextView) itemView.findViewById(R.id.tvEventDate);
tvCost = (TextView) itemView.findViewById(R.id.tvEventPrice);
tvInterested = (TextView) itemView.findViewById(R.id.tvEventInterested);
}
}
}
公共类EventsAdapter扩展了RecyclerView.Adapter{
私人语境；
一等兵