我无法看到回收视图，也不确定它出错的地方。如果你可以帮助我会很棒。
public class CallDurationFragment extends Fragment {
final FirebaseDatabase database = FirebaseDatabase.getInstance();
ArrayList<CallHistroy> callList = new ArrayList<>();
ArrayList<CallHistroy> callListTemp = new ArrayList<>();
ArrayList<CallHistroy> callObject = new ArrayList<>();
ArrayList<CallHistroy> callListText = new ArrayList<>();
private CallDurationFragment.OnFragmentInteractionListener mListener;
private RecyclerView rvCall;
private RecyclerView.Adapter callAdaptor;
private RecyclerView.LayoutManager eLayoutManager;
private EditText phoneNumber;
private static final int DIALOG_DATE_PICKER = 100;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_callduration_list, container, false);
phoneNumber = (EditText) getActivity().findViewById(editTextSearchKeyPhoneNo);
Context context = getActivity();
rvCall = (RecyclerView) rootView.findViewById(R.id.rvCallDuration);
rvCall.setHasFixedSize(true);
rvCall.setLayoutManager(eLayoutManager);
eLayoutManager = new LinearLayoutManager(getActivity());
phoneNumber.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
callListTemp = getAllCallRecords();
for(int i = 0 ; i < callListTemp.size() ; i++)
if(callListTemp.get(i).getPhoneNumber().contains(s.toString()) )
callListText.add(callListTemp.get(i));
callList = calculateIncomingOutgoing();
callAdaptor = new CallDurationAdapter(getActivity(), callList);
rvCall.setAdapter(callAdaptor);
}
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
}
public void onTextChanged(CharSequence s, int start,
int before, int count) {
}
});
callList = calculateIncomingOutgoing();
callAdaptor = new CallDurationAdapter(getActivity(), callList);
rvCall.setAdapter(callAdaptor);
return rootView;
}
public ArrayList<CallHistroy> getAllCallRecords(){
DatabaseReference ref = database.getReference();
ref.child("Call").addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
callObject.clear();
HashMap<String,Object> call = null;
Iterator<DataSnapshot> items = dataSnapshot.getChildren().iterator();
while(items.hasNext()){
DataSnapshot item = items.next();
Log.e("Listener",item.toString() );
call =(HashMap<String, Object>) item.getValue();
callObject.add(new CallHistroy(call.get("phoneNumber").toString(),call.get("mode").toString(),call.get("duration").toString(), call.get("date").toString(),item.getKey()));
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
return callObject;
}
public ArrayList<CallHistroy> calculateIncomingOutgoing(){
if(callListText.size() > 0){
callList = callListText;
}else {
callList = getAllCallRecords();
}
ArrayList<CallHistroy> callHistroyIncomingOutgoing = new ArrayList<>();
if(callList.size() > 0){
if(callList.get(0).getMode().equals("Outgoing")) {
callHistroyIncomingOutgoing.add(new CallHistroy(callList.get(0).getPhoneNumber(), "0", callList.get(0).getDuration()));
}else{
callHistroyIncomingOutgoing.add(new CallHistroy(callList.get(0).getPhoneNumber(), callList.get(0).getDuration(), "0"));
}
}
for( int i = 1 ; i < callList.size() ; i++){
boolean setValue = false;
for (int j = 0; j < callHistroyIncomingOutgoing.size() ;j++){
if( callHistroyIncomingOutgoing.get(j).getPhoneNumber().equals(callList.get(i).getPhoneNumber())){
setValue = true;
int incoming = Integer.parseInt(callHistroyIncomingOutgoing.get(j).getIncomingDuration());
int outgoing = Integer.parseInt( callHistroyIncomingOutgoing.get(j).getOutgoingDuration());
int duration = Integer.parseInt( callList.get(i).getDuration());
if(callList.get(i).getMode().equals("Outgoing")) {
callHistroyIncomingOutgoing.get(j).updateDuration(String.valueOf(incoming), String.valueOf(outgoing + duration));
}else{
callHistroyIncomingOutgoing.get(j).updateDuration(String.valueOf(incoming + duration), String.valueOf(outgoing));
}
}
}
if(!setValue) {
if(callList.get(i).getMode() == "Outgoing") {
callHistroyIncomingOutgoing.add(new CallHistroy(callList.get(i).getPhoneNumber(), "0", callList.get(i).getDuration()));
}else{
callHistroyIncomingOutgoing.add(new CallHistroy(callList.get(i).getPhoneNumber(), callList.get(i).getDuration(), "0"));
}
}
}
return callHistroyIncomingOutgoing;
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof CallListFragment.OnFragmentInteractionListener) {
mListener = (CallDurationFragment.OnFragmentInteractionListener) context;
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
@Override
public void onPause(){
super.onPause();
}
@Override
public void onDestroyView(){
super.onDestroyView();
}
@Override
public void onDestroy(){
super.onDestroy();
}
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
}
RecyclerView.Adapter<CallDurationAdapter.ViewHolder> {
private List<CallHistroy> mCalls;
private Context mContext;
public CallDurationAdapter(Context context, List<CallHistroy> calls) {
mCalls = calls;
mContext = context;
}
private Context getContext() {
return mContext;
}
@Override
public CallDurationAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
Context context = parent.getContext();
LayoutInflater inflater = LayoutInflater.from(context);
// Inflate the custom layout
View callDurationView = inflater.inflate(R.layout.item_call_duration_details, parent, false);
// Return a new holder instance
ViewHolder viewHolder = new ViewHolder(callDurationView);
return viewHolder;
}
@Override
public void onBindViewHolder(CallDurationAdapter.ViewHolder viewHolder, final int position) {
// Get the data model based on position
final CallHistroy ch = mCalls.get(position);
// Set item views based on your views and data model
viewHolder._phoneNoTextView.setText(ch.getPhoneNumber());
viewHolder._incomingTextView.setText(ch.getIncomingDuration());
viewHolder._outgoingTextView.setText(ch.getOutgoingDuration());
final String key = ch.getKey();
}
@Override
public int getItemCount() {
return mCalls.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
public TextView _phoneNoTextView;
public TextView _incomingTextView;
public TextView _outgoingTextView;
public ViewHolder(View itemView) {
super(itemView);
_phoneNoTextView = (TextView) itemView.findViewById(R.id.rvs_duration_phone_no);
_incomingTextView = (TextView) itemView.findViewById(R.id.rvs_duration_outing_total_call);
_outgoingTextView = (TextView) itemView.findViewById(R.id.rvs_duration_incoming_total_call);
}
}
}
public class CallDurationActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_call_duration);
CallDurationFragment newFragment = new CallDurationFragment();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.recordFragmentContainer, newFragment);
transaction.addToBackStack(null);
transaction.commit();
}
public void refreshCallDuration(View v) {
Intent intent = new Intent(this, CallDurationActivity.class);
startActivity(intent);
}
protected void onPause() {
super.onPause();
}
protected void onStop() {
super.onStop();
}
protected void onDestroy() {
super.onDestroy();
}
public void onBackCallDuration(View v) {
if (getFragmentManager().getBackStackEntryCount() > 0) {
getFragmentManager().popBackStack();
} else {
super.onBackPressed();
}
}
}
public class CallHistroy implements Comparable<CallHistroy> {
String phoneNumber;
String mode;
String duration;
String date;
String key;
String incomingDuration;
String outgoingDuration;
int totalIncoming;
int totalOutgoing;
public CallHistroy(String _phontNumber, String _incomingDuration, String _outgoingDuration ){
setPhoneNumber( _phontNumber );
setIncomingDuration( _incomingDuration );
setOutgoingDuration( _outgoingDuration );
}
public CallHistroy(String _date, int _totalIncoming, int _totalOutgoing ){
setDate(_date);
setTotalIncoming( _totalIncoming );
setTotalOutgoing( _totalOutgoing );
}
public void updateCall(int _totalIncoming, int _totalOutgoing){
setTotalIncoming( _totalIncoming );
setTotalOutgoing( _totalOutgoing );
}
public void updateDuration(String _incomingDuration, String _outgoingDuration){
setOutgoingDuration( _incomingDuration );
setIncomingDuration( _outgoingDuration );
}
public CallHistroy(String _phoneNumber, String _mode, String _duration, String _date ){
setPhoneNumber( _phoneNumber );
setDuration( _duration );
setDate( _date );
setMode( _mode );
}
public CallHistroy(String _phoneNumber, String _mode, String _duration, String _date, String _key ){
setPhoneNumber( _phoneNumber );
setDuration( _duration );
setDate( _date );
setMode( _mode );
setKey( _key );
}
public String getIncomingDuration() {
return incomingDuration;
}
public String getOutgoingDuration() {
return outgoingDuration;
}
public int getTotalIncoming() {
return totalIncoming;
}
public int getTotalOutgoing() {
return totalOutgoing;
}
public void setIncomingDuration(String incomingDuration) {
this.incomingDuration = incomingDuration;
}
public void setOutgoingDuration(String outgoingDuration) {
this.outgoingDuration = outgoingDuration;
}
public void setTotalIncoming(int totalIncoming) {
this.totalIncoming = totalIncoming;
}
public void setTotalOutgoing(int totalOutgoing) {
this.totalOutgoing = totalOutgoing;
}
public String getKey() {
return key;
}
public void setKey(String key) {
this.key = key;
}
public String getPhoneNumber() {
return phoneNumber;
}
public String getDate() {
return date;
}
public String getMode() {
return mode;
}
public String getDuration() {
return duration;
}
public void setPhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}
public void setDate(String date) {
this.date = date;
}
public void setDuration(String duration) {
this.duration = duration;
}
public void setMode(String mode) {
this.mode = mode;
}
@Override
public int compareTo(@NonNull CallHistroy callHistroyObject) {
String[] part = callHistroyObject.date.split("/");
String[] part1 = date.split("/");
int date = Integer.parseInt(part[0]);
int month = Integer.parseInt(part[1]);
String _year = part[2];
int year = Integer.parseInt(_year.substring(0,4));
int date1 = Integer.parseInt(part1[0]);
int month1 = Integer.parseInt(part1[1]);
String _year1 = part1[2];
int year1 = Integer.parseInt(_year1.substring(0,4));
if(year > year1)
return -1;
else if(month > month1)
return -1;
else if(date >date1)
return -1;
else
return 0;
}
}
答案 0 :(得分：1)
您在布局管理器创建之前设置了
rvCall.setLayoutManager(eLayoutManager);
eLayoutManager = new LinearLayoutManager(getActivity());
应该是
eLayoutManager = new LinearLayoutManager(getActivity());
rvCall.setLayoutManager(eLayoutManager);