我有一个应用程序，我想要执行以下操作：
当用户点击星形图像时，它会更新服务器（将帖子添加到我的 favoritePosts ，并将+1添加到 likesCounter ），但它也应该更新imageView（喜欢不喜欢，反之亦然），以及我点击的cardView上带有喜欢数量的textView。
目前，imageView发生了变化，并且它正确地更新了服务器，但有些东西不能按预期方式工作，例如：
当我点击星形图像视图（将帖子添加到收藏夹）时，某些标题会消失并重新出现，而textView几乎从不更新，当它出现时，它有时会减少而不是增加反之亦然。 在我的数据库中，它已正确更新，如正确添加/删除，喜欢计数器正确更新，当我退出并重新输入活动时，它也会正确更新。
我尝试了this，this，this，this，this等，但这些解决方案都不适用于我。
UserPostsAdapter：
public class UserPostsAdapter extends RecyclerView.Adapter<UserPostsAdapter.PostsViewHolder> {
private List<UserPosts> postItems;
private Context context;
private SQLiteHandler db;
private static final String TAG = UserPosts.class.getSimpleName();
class PostsViewHolder extends RecyclerView.ViewHolder {
TextView userPostsTitle, userPostsDate, userPost, textViewStars, textViewComments;
ImageView imageViewDisplayComments, imageViewReply, imageViewCommentStar;
String pCcontactId, postId;
PostsViewHolder(View itemView) {
super(itemView);
userPostsTitle = (TextView) itemView.findViewById(R.id.userPostsTitle);
userPostsDate = (TextView) itemView.findViewById(R.id.userPostsDate);
userPost = (TextView) itemView.findViewById(R.id.userPost);
textViewStars = (TextView) itemView.findViewById(R.id.textViewStars);
textViewComments = (TextView) itemView.findViewById(R.id.textViewComments);
imageViewCommentStar = (ImageView) itemView.findViewById(R.id.imageViewCommentStar);
imageViewDisplayComments = (ImageView) itemView.findViewById(R.id.imageViewDisplayComments);
imageViewReply = (ImageView) itemView.findViewById(R.id.imageViewReply);
}
}
public UserPostsAdapter(List<UserPosts> postsList, Context context) {
this.postItems = postsList;
this.context = context;
}
@Override
public UserPostsAdapter.PostsViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_user_post, parent, false);
return new UserPostsAdapter.PostsViewHolder(itemView);
}
@Override
public void onBindViewHolder(final UserPostsAdapter.PostsViewHolder holder, int position) {
final UserPosts post = postItems.get(position);
db = new SQLiteHandler(context.getApplicationContext());
HashMap<String, String> user = db.getUserDetails();
final String currentUserId = user.get("uid");
if (post.getTitle() != null && !post.getTitle().isEmpty()) {
holder.userPostsTitle.setText(post.getTitle());
} else {
holder.userPostsTitle.setVisibility(View.GONE);
}
holder.userPostsDate.setText(post.getCreatedDateTime());
holder.userPost.setText(post.getPostedText());
if (Integer.parseInt(post.getLikesNumber()) > 0) {
holder.textViewStars.setText(post.getLikesNumber());
}
holder.textViewComments.setText(post.getCommentsNumber());
holder.pCcontactId = post.getUserId();
final String postId = holder.postId = post.getId();
if (post.getFavouritePost()) {
holder.imageViewCommentStar.setImageResource(R.drawable.ic_icon_star_ppdcolor);
} else {
holder.imageViewCommentStar.setImageResource(R.drawable.ic_icon_star_outline_ppdcolor);
}
holder.imageViewCommentStar.setOnClickListener(new View.OnClickListener() {
boolean isPressed = post.getFavouritePost();
@Override
public void onClick(View v) {
if (isPressed) {
ApiInterface apiService =
ApiClient.getClient().create(ApiInterface.class);
Call<DefaultResponse> call = apiService.removePostFavourite(currentUserId, postId);
call.enqueue(new Callback<DefaultResponse>() {
@Override
public void onResponse(Call<DefaultResponse> call, retrofit2.Response<DefaultResponse> response) {
boolean success = response.body().isSuccess();
onFavouriteClicked(position);
}
@Override
public void onFailure(Call<DefaultResponse> call, Throwable t) {
Log.e(TAG, t.toString());
}
});
} else {
ApiInterface apiService =
ApiClient.getClient().create(ApiInterface.class);
Call<DefaultResponse> call = apiService.addPostFavourite(currentUserId, postId);
call.enqueue(new Callback<DefaultResponse>() {
@Override
public void onResponse(Call<DefaultResponse> call, retrofit2.Response<DefaultResponse> response) {
boolean success = response.body().isSuccess();
onFavouriteClicked(position);
}
@Override
public void onFailure(Call<DefaultResponse> call, Throwable t) {
Log.e(TAG, t.toString());
}
});
}
isPressed = !isPressed;
}
});
holder.imageViewDisplayComments.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
}
});
holder.imageViewReply.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
AlertDialog.Builder addCommentBuilder = new AlertDialog.Builder(context);
LayoutInflater inflater = LayoutInflater.from(context);
View addCommentView = inflater.inflate(R.layout.popup_add_comment_reply, null);
final EditText addCommentReplyEditText = (EditText) addCommentView.findViewById(R.id.addCommentReplyEditText);
FloatingActionButton imageViewCommentReply = (FloatingActionButton) addCommentView.findViewById(R.id.imageViewCommentReply);
addCommentBuilder.setView(addCommentView);
final AlertDialog addCommentReply = addCommentBuilder.create();
addCommentReply.show();
imageViewCommentReply.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (!addCommentReplyEditText.getText().toString().isEmpty()) {
addCommentReply.dismiss();
} else {
Toast.makeText(context,
R.string.failure,
Toast.LENGTH_SHORT).show();
}
}
});
}
});
}
private void onFavouriteClicked(int position) {
UserPosts post = postItems.get(position);
post.setFavouritePost(!post.getFavouritePost());
postItems.set(position, post);
notifyItemChanged(position);
}
@Override
public int getItemCount() {
return postItems.size();
}
}
Cardview：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:gravity="center"
android:orientation="vertical">
<android.support.v7.widget.CardView
android:id="@+id/userPostsCardView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:padding="5dp"
card_view:cardCornerRadius="4dp">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp">
<TextView
android:id="@+id/userPostsTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="1dp"
android:paddingEnd="5dp"
android:paddingStart="5dp"
android:textStyle="bold"
tools:ignore="RtlHardcoded,SpUsage" />
<TextView
android:id="@+id/userPostsDate"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/userPostsTitle"
android:layout_marginTop="1dip"
android:paddingEnd="5dp"
android:paddingStart="5dp"
android:textColor="@color/aluminum"
tools:ignore="RtlHardcoded,SpUsage" />
<TextView
android:id="@+id/userPost"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@id/userPostsDate"
android:padding="5dp"/>
<View
android:id="@+id/divider"
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_below="@+id/userPost"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:background="#B6B6B6" />
<LinearLayout
android:id="@+id/idLLUserPostsFooter"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/divider"
android:orientation="horizontal"
android:weightSum="9">
<ImageView
android:id="@+id/imageViewCommentStar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:contentDescription="@string/star"
android:padding="5dp"/>
<TextView
android:id="@+id/textViewStars"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="3"
android:padding="5dp" />
<ImageView
android:id="@+id/imageViewDisplayComments"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:contentDescription="@string/comments"
android:padding="5dp"
card_view:srcCompat="@drawable/comment_multiple_outline_ppdcolor" />
<TextView
android:id="@+id/textViewComments"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="3"
android:padding="5dp" />
<ImageView
android:id="@+id/imageViewReply"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:contentDescription="@string/reply"
android:padding="5dp"
card_view:srcCompat="@drawable/reply_ppdcolor" />
</LinearLayout>
</RelativeLayout>
</android.support.v7.widget.CardView>
<TextView
android:id="@+id/userAppId"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="@string/number_zero"
android:visibility="gone" />
<TextView
android:id="@+id/userContactId"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="@string/number_zero"
android:visibility="gone" />
</LinearLayout>