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Ich habe ein Dialog Fragment, das ein RecycleView darin angezeigt wird. Dies macht mich verrückt, denn ich sehe fast alle SO Frage über RecycleView nicht Problem angezeigt, aber immer noch nicht mein Problem zu lösen. Bitte werfen Sie einen Blick in meinen CodeRecycleView zeigt nicht im Dialog Fragment
Hier ist meine Fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="@+id/titlebar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Be the first to like this"
android:layout_marginLeft="@dimen/feed_item_margin"
android:layout_marginRight="@dimen/feed_item_margin"
android:layout_marginTop="@dimen/feed_item_margin"/>
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="0.5dp"
android:background="@color/dialog"
android:layout_marginTop="10dp"
android:paddingRight="@dimen/comment_item_status_pad_left_right"
android:paddingLeft="@dimen/comment_item_status_pad_left_right"
android:layout_below="@+id/titlebar"/>
<android.support.v7.widget.RecyclerView
android:id="@+id/comment_recycler_view"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:animateLayoutChanges="false"
android:scrollbars="vertical" />
<LinearLayout
android:id="@+id/commentInsert"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_alignParentBottom="true"
android:background="@android:color/white"
android:orientation="horizontal" >
<EditText
android:id="@+id/commentField"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:hint="Add a comment"
android:background="@null"/>
<Button
android:id="@+id/sendButton"
android:layout_width="77dp"
android:layout_height="wrap_content"
android:text="Send" />
</LinearLayout>
Fragment.java stellen Sie die recycleview t o das Fragment
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Remove TITLE
getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);
View dialogView = inflater.inflate(R.layout.fragment_comment, container,false);
commentRecyclerView =(RecyclerView)dialogView.findViewById(R.id.comment_recycler_view);
commentRecyclerView.setNestedScrollingEnabled(false);
//bind the recycler view with the adapter
commentAdapter = new CommentAdapter(this.getActivity(),commentItems);
final LinearLayoutManager mLayoutManager = new LinearLayoutManager(this.getActivity());
commentRecyclerView.setLayoutManager(mLayoutManager);
commentRecyclerView.setAdapter(commentAdapter);
Hier mache ich Anfrage an Server
private void fetchItem(int item_id){
// making fresh volley request and getting json
JsonObjectRequest jsonReq = new JsonObjectRequest(Request.Method.GET,
URL_GET_ITEM + item_id, null, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
VolleyLog.d(AppController.TAG, "VolleyResponse: " + response.toString());
Log.d("responseGet",response.toString());
parseJsonFeed(response);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(AppController.TAG, "Error: " + error.getMessage());
}
}) {
//adding header to authenticate
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String,String> headers = new HashMap<>();
headers.put("Content-Type", "application/json");
return headers;
}
};
// Adding request to volley request queue
AppController.getInstance().addToRequestQueue(jsonReq);
}
Hier habe ich die json Feed
ich hinzufügen, um alle Details zu denItem.java Hier
private void parseJsonFeed(JSONObject response) {
try {
JSONArray itemArray = response.getJSONArray("item");
//get all the item in Json
for (int i = 0; i < itemArray.length(); i++) {
JSONObject itemObj = (JSONObject) itemArray.get(i);
itemId = itemObj.getInt("item_id");
itemUsername= itemObj.getString("item_username");
itemBody = itemObj.getString("item_body");
itemProfileImage = itemObj.getString("item_profile_image");
itemCreatedAt = itemtObj.getString("item_created_at");
//set all item to the Array list
setItemToCommentArrayList(itemId,itemUsername,itemProfileImage,itemBody,itemCreatedAt);
}
// notify data changes to list adapter
itemAdapter.notifyDataSetChanged();
}catch (JSONException e){
System.out.println("end of content");
}
}
analysieren Modell
private void setItemToCommentArrayList(int itemId, String itemUsername, String itemrofileImage, String itemBody, String itemCreatedAt) {
CommentItem item = new CommentItem();
item.setCommentId(itemId);
item.setUsername(itemUsername);
item.setCommentProfilePic(itemProfileImage);
item.setCommentBody(itemBody);
item.setCommentTimeStamp(itemCreatedAt);
//save it to the comment array list
items.add(item);
}
Hier die comment_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/commentProfilePic"
android:layout_width="@dimen/comment_item_profile_pic"
android:layout_height="@dimen/comment_item_profile_pic"
android:layout_marginLeft="@dimen/feed_item_margin"
android:layout_marginRight="@dimen/feed_item_margin"
android:layout_marginTop="@dimen/feed_item_margin"
android:scaleType="fitCenter" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/feed_item_margin"
android:layout_marginRight="@dimen/feed_item_margin"
android:layout_marginTop="@dimen/feed_item_margin"
android:orientation="vertical"
android:paddingLeft="@dimen/comment_item_profile_info_padd">
<TextView
android:id="@+id/commentUsername"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:paddingLeft="@dimen/comment_item_status_pad_left_right"
android:paddingRight="@dimen/comment_item_status_pad_left_right"
android:textStyle="bold" />
<TextView
android:id="@+id/commentBody"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:paddingLeft="@dimen/comment_item_status_pad_left_right"
android:paddingRight="@dimen/comment_item_status_pad_left_right" />
<TextView
android:id="@+id/commentTimestamp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:paddingLeft="@dimen/comment_item_status_pad_left_right"
android:paddingRight="@dimen/comment_item_status_pad_left_right"
android:paddingTop="@dimen/comment_item_timestamp_pad_top" />
</LinearLayout>
</LinearLayout>
Schließlich hier ist der Adapter
public class CommentAdapter extends RecyclerView.Adapter<CommentAdapter.MyViewHolder>{
private Context mContext;
private List<CommentItem> commentItems;
class MyViewHolder extends RecyclerView.ViewHolder{
TextView commentBody,commentUsername,commentTimeStamp;
ImageView commentProfilePic;
//find all the view here
MyViewHolder(final View view) {
super(view);
commentProfilePic = (ImageView)view.findViewById(R.id.commentProfilePic);
commentUsername = (TextView)view.findViewById(R.id.commentUsername);
commentBody = (TextView)view.findViewById(R.id.commentBody);
commentTimeStamp = (TextView)view.findViewById(R.id.commentTimestamp);
}
}
public CommentAdapter(Context mContext, List<CommentItem> commentItems) {
this.mContext = mContext;
this.commentItems = commentItems;
}
@Override
public long getItemId(int position) {
return position;
}
//this one for make the adview inside this
@Override
public int getItemViewType(int position) {
return position;
}
//bind the comment item here
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View commentItemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.comment_item, parent, false);
return new MyViewHolder(commentItemView);
}
//do all the action here
@Override
public void onBindViewHolder(CommentAdapter.MyViewHolder holder, int position) {
final CommentItem commentItem = commentItems.get(position);
//commenter username
holder.commentUsername.setText(commentItem.getUsername());
//commenter profile image
Glide
.with(mContext)
.load(commentItem.getCommentProfilePic())
.fitCenter()
.into(holder.commentProfilePic);
//comment body
holder.commentBody.setText(commentItem.getCommentBody());
//comment timestamp
holder.commentTimeStamp.setText(commentItem.getCommentTimeStamp());
}
@Override
public int getItemCount() {
return commentItems.size();
}
}
ich fast alles mit meinem anderen RecycleView überprüfen, hatte ich nicht anders sehen .Und sehen Sie auch die ganze Stackoverflow-Frage, ich kann immer noch nicht sehen, was passiert.Es zeigte nur kein Element in der Recyclingansicht e Hilfe
UPDATE ich das Layout in Fragment.xml von RelativeLayout zu Linearlayout, es funktioniert immer noch nicht ändern, nur.
Ich wechsle die layout_height zu match_parent, entfernen Sie diese Zeile als auch android:layout_weight="1", noch nicht die item.As zeigen unter
Versuchte Veränderung als Eltern Linear-Layout, android:layout_height="500dp" als auch, nicht auch
<android.support.v7.widget.RecyclerView
android:id="@+id/comment_recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:animateLayoutChanges="false"
android:scrollbars="vertical" />
Du meinst das im linearen Layout von 'comment_item.xml'? Meinst du das ?? – ken
können Sie mir sagen, wo ich diesen Code hinzufügen kann? – ken
müssen Sie Ihre Fragment.xml-Datei aktualisieren. – Neji