Java Android-将视图添加到图像不会'；t更新-onClick
摘要 当用户单击Java Android-将视图添加到图像不会'；t更新-onClick,java,android,parse-platform,android-recyclerview,Java,Android,Parse Platform,Android Recyclerview,摘要 当用户单击RecyclerView项时，我想从存储在BaaS[Sashido]（X坐标、Y坐标和标记名称）中的信息向该图像添加标记。但是，我遇到的问题是，我没有得到每个人所说的职位。我创建了一个toast，当图像被点击时，它显示了与视图本身相对应的正确位置。（开始时为零，依此类推） 但是如何在用户单击列表中的另一项后更新位置，以便与Sashido中数组中的位置相对应的标记与RecyclerView中的位置匹配，因为此时Sashido类中的第一行正在用该行的标记填充所有图像 我的假设是使用g
RecyclerViewRecyclerViewgetLayoutPosition（）getTagInformation（）objects.get（position）imageIdobjectIdobjectId如果您需要我提供更多的代码，我非常乐意 如果我理解正确，问题是ParseQuery不会以相同的顺序返回对象。所以，假设对象在RecycleView中的位置与在ParseDatabase中的位置相同是错误的 如果你想从Sashido那里得到标签，你应该首先与图像建立一些关系，例如附加列。然后将查询设置为白色，并附加如下参数：
private静态最终字符串UNIQ\u TAG\u ID=“tagId”；
查询。whereContainedIn（UNIQ_TAG_ID，ID）
或者让所有像你现在这样的ParseObject找到与你的图像对应的标签，然后获取信息。Hi@BIW请点击下面的链接
在onBindViewHolder
中，您每次都在添加侦听器，因此它每次都返回相同的对象，因为recyclerView ViewHolder模式在onBindViewHolder
中使用相同的对象渲染recyclerView项。所以，当您创建holder对象时，您需要添加它，并将listener设置为该对象，以便获得正确的位置
package com.subbu.moviemasti.adapter;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import com.squareup.picasso.Picasso;
import com.subbu.moviemasti.Constants;
import com.subbu.moviemasti.R;
import com.subbu.moviemasti.entities.Movie;
import java.util.List;
import butterknife.Bind;
import butterknife.ButterKnife;
/**
* Created by subrahmanyam on 25-11-2015.
*/
public class MovieAdapter extends RecyclerView.Adapter<MovieAdapter.ViewHolder> {
private final List<Movie> movieList;
private onRecyclerViewItemClickListener mItemClickListener;
public MovieAdapter(List<Movie> movieList) {
this.movieList = movieList;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.grid_item, null);
ViewHolder holder = new ViewHolder(view);
return holder;
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
final Movie movie = movieList.get(position);
String imageUrl = Constants.MOVIE_POSTER_BASE_URL + movie.getPosterPath();
if (imageUrl != null) {
Picasso.with(holder.posterImage.getContext()).load(imageUrl).
placeholder(R.drawable.img_default).
into(holder.posterImage);
}
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public int getItemCount() {
return movieList.size();
}
public void setOnItemClickListener(onRecyclerViewItemClickListener mItemClickListener) {
this.mItemClickListener = mItemClickListener;
}
public interface onRecyclerViewItemClickListener {
void onItemClickListener(View view, int position);
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
@Bind(R.id.poster)
ImageView posterImage;
public ViewHolder(View view) {
super(view);
ButterKnife.bind(this, view);
view.setOnClickListener(this);
}
@Override
public void onClick(View v) {
mItemClickListener.onItemClickListener(v, getAdapterPosition());
}
}
}
从ViewHolder类中，我们需要传递回收视图的位置
，或者我们可以编写单击项目时需要执行的代码。解决了问题。并不是因为位置不对，而是因为我在填充图像列表之前试图找到标记，因为Parse的FindInBackground（）
回调导致填充太晚
解决方案是，我得到了JSONArray
，它在填充原始图像列表的原始查询中包含标记名、x坐标和y坐标。因此它们将同时执行，然后我将JSONArray
值传递到模型中，然后传递到适配器中的bind（）
函数中
以前，问题是适配器将所有标记绑定到每个图像上，因此当图像上发生单击事件时，它只会将标记添加到当前选择的imageContainer
（当前位置），而不会在任何特定位置添加任何局部视图
package com.subbu.moviemasti.adapter;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import com.squareup.picasso.Picasso;
import com.subbu.moviemasti.Constants;
import com.subbu.moviemasti.R;
import com.subbu.moviemasti.entities.Movie;
import java.util.List;
import butterknife.Bind;
import butterknife.ButterKnife;
/**
* Created by subrahmanyam on 25-11-2015.
*/
public class MovieAdapter extends RecyclerView.Adapter<MovieAdapter.ViewHolder> {
private final List<Movie> movieList;
private onRecyclerViewItemClickListener mItemClickListener;
public MovieAdapter(List<Movie> movieList) {
this.movieList = movieList;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.grid_item, null);
ViewHolder holder = new ViewHolder(view);
return holder;
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
final Movie movie = movieList.get(position);
String imageUrl = Constants.MOVIE_POSTER_BASE_URL + movie.getPosterPath();
if (imageUrl != null) {
Picasso.with(holder.posterImage.getContext()).load(imageUrl).
placeholder(R.drawable.img_default).
into(holder.posterImage);
}
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public int getItemCount() {
return movieList.size();
}
public void setOnItemClickListener(onRecyclerViewItemClickListener mItemClickListener) {
this.mItemClickListener = mItemClickListener;
}
public interface onRecyclerViewItemClickListener {
void onItemClickListener(View view, int position);
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
@Bind(R.id.poster)
ImageView posterImage;
public ViewHolder(View view) {
super(view);
ButterKnife.bind(this, view);
view.setOnClickListener(this);
}
@Override
public void onClick(View v) {
mItemClickListener.onItemClickListener(v, getAdapterPosition());
}
}
}
这使得每次单击图像时，它总是在数据库中查找第一个对象并将其分配给选定的图像。[由于触发getTagInformation（）
函数的click事件）。
通过ViewHolder
的Bind
功能中的getTagInformation
方法的自动化，我能够用正确的标记填充每个图像，并使用分配给图像的onClickListener
对其进行进一步操作，如下所示：
回收视图支架：
public class RecyclerViewHolderPreviousPosts extends RecyclerView.ViewHolder implements View.OnClickListener {
// View holder for gridview recycler view as we used in listview
public TextView createdAt;
public ImageView uploadedImage;
public TextView caption;
TextView number_of_likes;
TextView number_of_comments;
TextView number_of_tags;
public ImageView comments;
public RelativeLayout imageContainer;
RecyclerViewHolderPreviousPosts(View view) {
super(view);
// Find all views ids
this.createdAt = (TextView) view
.findViewById(R.id.created_date);
this.uploadedImage = (ImageView) view
.findViewById(R.id.image);
this.caption = (TextView) view
.findViewById(R.id.caption_post);
this.number_of_likes = (TextView) view
.findViewById(R.id.number_of_likes);
this.number_of_comments = (TextView) view
.findViewById(R.id.number_of_comments);
this.number_of_tags = (TextView) view
.findViewById(R.id.number_of_tags);
this.comments = (ImageView) view
.findViewById(R.id.comments_image);
this.imageContainer = (RelativeLayout) view
.findViewById(R.id.image_container);
view.setOnClickListener(this);
}
void bind(PreviousPostsDataModel model1, final int position) { ....
model = previousPostsList.get(position);
getTagInformation();
....}
private void getTagInformation() {
for (int o = 0; o < model.getTagSize(); o++) {
tag = new TextView(App.getContext());
tag.setX(Float.parseFloat(model.getXpoints(o)));
tag.setY(Float.parseFloat(model.getYpoints(o)));
Log.e("x", "" + tag.getX());
Log.e("y", "" + tag.getY());
tag.setText(model.getTagName(o));
tag.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
tag.setMaxLines(1);
tag.setTextSize(11);
tag.setClickable(true);
tag.setHintTextColor(Color.WHITE);
tag.setTextColor(Color.WHITE);
tag.setBackgroundResource(R.drawable.tags_rounded_corners);
imageContainer.addView(tag);
tags.add(tag);
}
}
@Override
public void onClick(View v) {
if (count == 0) {
for (int i = 0; i < tags.size(); i++) {
tags.get(i).setVisibility(View.INVISIBLE);
}
count = 1;
}
else {
for (int j = 0; j < tags.size(); j++) {
tags.get(j).setVisibility(View.VISIBLE);
}
count = 0;
}
}
}
private void populateSelectedUserRecyclerView(String objectid) {
ParseQuery<ParseObject> query = ParseQuery.getQuery("FashionFeed");
query.whereEqualTo("uploader", ParseObject.createWithoutData("_User", objectid));
query.orderByDescending("createdAt");
Log.e("get order", "ordered");
query.findInBackground(new FindCallback<ParseObject>() {
@Override
public void done(List<ParseObject> objects, ParseException e) {
Log.e("gets done", "gets into done");
if(e == null) {
if (objects.size() > 0) {
Log.e("does it get here", "it got here");
latestPostList = new ArrayList<>();
for (ParseObject j : objects) {
JSONArray tagNamesArray = j.getJSONArray("tagName");
JSONArray posXArray = j.getJSONArray("tagPointX");
JSONArray posYArray = j.getJSONArray("tagPointY");
latestPostList.add(new PreviousPostsDataModel(tagNamesArray, posXArray, posYArray));
}
}
else {
no_follow_display.setVisibility(View.VISIBLE);
no_follow_display.setText(R.string.no_posts);
no_follow_display.bringToFront();
recyclerView.setVisibility(View.GONE);
}
adapter = new RecyclerViewAdapterPreviousPosts(getActivity(), latestPostList, listener);
recyclerView.setAdapter(adapter);// set adapter on recyclerview
adapter.notifyDataSetChanged();
}
else {
Log.e("failed", "failed" + e.getMessage());
}
}
});
}
公共类RecycleServiceWholderPreviousPosts扩展了RecycleServiceView.ViewHolder实现了View.OnClickListener{
//我们在listview中使用的gridview回收器视图的视图支架
公共文本视图创建数据；
公共图像查看上传图像；
公共文本视图标题；
text查看喜欢的数量；
text查看注释的数量；
text查看标签的编号；
公众意见；
公共相对论图像容器；
RecycleServiceWholderPreviousPosts（视图）{
超级（视图）；
//查找所有视图ID
this.createdAt=（TextView）视图
.findViewById（R.id.创建日期）；
this.uploadeImage=（ImageView）视图
.findviewbyd（R.id.image）；
this.caption=（TextView）视图
.findViewById（R.id.caption_post）；
this.number_of_likes=（TextView）视图
.findviewbyd（R.id.number\u of \u like）；
this.number\u of_comments=（TextView）视图
.findViewById（R.id.评论编号）；
this.number_of_标记=（TextView）视图
.findViewById（R.id.标签编号）；
this.comments=（ImageView）视图
.findviewbyd（R.id.comments\u图像）；
this.imageContainer=（RelativeLayout）视图
.findViewById（R.id.image_容器）；
view.setOnClickListener（这个）；
}
无效绑定（以前的PostSDataModel1，最终int位置）{。。。。
模型=上一个PostSlist.get（位置）；
获取信息（）；
....}
私人vo
package com.subbu.moviemasti.adapter;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import com.squareup.picasso.Picasso;
import com.subbu.moviemasti.Constants;
import com.subbu.moviemasti.R;
import com.subbu.moviemasti.entities.Movie;
import java.util.List;
import butterknife.Bind;
import butterknife.ButterKnife;
/**
* Created by subrahmanyam on 25-11-2015.
*/
public class MovieAdapter extends RecyclerView.Adapter<MovieAdapter.ViewHolder> {
private final List<Movie> movieList;
private onRecyclerViewItemClickListener mItemClickListener;
public MovieAdapter(List<Movie> movieList) {
this.movieList = movieList;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.grid_item, null);
ViewHolder holder = new ViewHolder(view);
return holder;
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
final Movie movie = movieList.get(position);
String imageUrl = Constants.MOVIE_POSTER_BASE_URL + movie.getPosterPath();
if (imageUrl != null) {
Picasso.with(holder.posterImage.getContext()).load(imageUrl).
placeholder(R.drawable.img_default).
into(holder.posterImage);
}
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public int getItemCount() {
return movieList.size();
}
public void setOnItemClickListener(onRecyclerViewItemClickListener mItemClickListener) {
this.mItemClickListener = mItemClickListener;
}
public interface onRecyclerViewItemClickListener {
void onItemClickListener(View view, int position);
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
@Bind(R.id.poster)
ImageView posterImage;
public ViewHolder(View view) {
super(view);
ButterKnife.bind(this, view);
view.setOnClickListener(this);
}
@Override
public void onClick(View v) {
mItemClickListener.onItemClickListener(v, getAdapterPosition());
}
}
}
class MyActivity extendsActivity implements onRecyclerViewItemClickListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
manager = new GridLayoutManager(getActivity(), cols);
gridView.setLayoutManager(manager);
gridView.setAdapter(adapter);
adapter.setOnItemClickListener(this);
}
@Override
public void onItemClickListener(View view, int position) {
//Do wantever you want to do
}
}
public class RecyclerViewHolderPreviousPosts extends RecyclerView.ViewHolder implements View.OnClickListener {
// View holder for gridview recycler view as we used in listview
public TextView createdAt;
public ImageView uploadedImage;
public TextView caption;
TextView number_of_likes;
TextView number_of_comments;
TextView number_of_tags;
public ImageView comments;
public RelativeLayout imageContainer;
RecyclerViewHolderPreviousPosts(View view) {
super(view);
// Find all views ids
this.createdAt = (TextView) view
.findViewById(R.id.created_date);
this.uploadedImage = (ImageView) view
.findViewById(R.id.image);
this.caption = (TextView) view
.findViewById(R.id.caption_post);
this.number_of_likes = (TextView) view
.findViewById(R.id.number_of_likes);
this.number_of_comments = (TextView) view
.findViewById(R.id.number_of_comments);
this.number_of_tags = (TextView) view
.findViewById(R.id.number_of_tags);
this.comments = (ImageView) view
.findViewById(R.id.comments_image);
this.imageContainer = (RelativeLayout) view
.findViewById(R.id.image_container);
view.setOnClickListener(this);
}
void bind(PreviousPostsDataModel model1, final int position) { ....
model = previousPostsList.get(position);
getTagInformation();
....}
private void getTagInformation() {
for (int o = 0; o < model.getTagSize(); o++) {
tag = new TextView(App.getContext());
tag.setX(Float.parseFloat(model.getXpoints(o)));
tag.setY(Float.parseFloat(model.getYpoints(o)));
Log.e("x", "" + tag.getX());
Log.e("y", "" + tag.getY());
tag.setText(model.getTagName(o));
tag.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
tag.setMaxLines(1);
tag.setTextSize(11);
tag.setClickable(true);
tag.setHintTextColor(Color.WHITE);
tag.setTextColor(Color.WHITE);
tag.setBackgroundResource(R.drawable.tags_rounded_corners);
imageContainer.addView(tag);
tags.add(tag);
}
}
@Override
public void onClick(View v) {
if (count == 0) {
for (int i = 0; i < tags.size(); i++) {
tags.get(i).setVisibility(View.INVISIBLE);
}
count = 1;
}
else {
for (int j = 0; j < tags.size(); j++) {
tags.get(j).setVisibility(View.VISIBLE);
}
count = 0;
}
}
}
private void populateSelectedUserRecyclerView(String objectid) {
ParseQuery<ParseObject> query = ParseQuery.getQuery("FashionFeed");
query.whereEqualTo("uploader", ParseObject.createWithoutData("_User", objectid));
query.orderByDescending("createdAt");
Log.e("get order", "ordered");
query.findInBackground(new FindCallback<ParseObject>() {
@Override
public void done(List<ParseObject> objects, ParseException e) {
Log.e("gets done", "gets into done");
if(e == null) {
if (objects.size() > 0) {
Log.e("does it get here", "it got here");
latestPostList = new ArrayList<>();
for (ParseObject j : objects) {
JSONArray tagNamesArray = j.getJSONArray("tagName");
JSONArray posXArray = j.getJSONArray("tagPointX");
JSONArray posYArray = j.getJSONArray("tagPointY");
latestPostList.add(new PreviousPostsDataModel(tagNamesArray, posXArray, posYArray));
}
}
else {
no_follow_display.setVisibility(View.VISIBLE);
no_follow_display.setText(R.string.no_posts);
no_follow_display.bringToFront();
recyclerView.setVisibility(View.GONE);
}
adapter = new RecyclerViewAdapterPreviousPosts(getActivity(), latestPostList, listener);
recyclerView.setAdapter(adapter);// set adapter on recyclerview
adapter.notifyDataSetChanged();
}
else {
Log.e("failed", "failed" + e.getMessage());
}
}
});
}