Java 我有一个视图，在该视图中我有一个文本视图我想更新该文本视图吗？
我有三个类，适配器类、投票类和一个活动，其中我的JSONrequest如下所示。问题是，你可以看到我在活动中调用我的JSONrequest，它将获得一个视图列表，在该视图中我有一个mVote textview。在我的适配器中，您还可以看到，当有人按下时，我有一个like按钮，希望mVotes从0更改为1。我从服务器获取所有数据，因此我假设我需要发出一个新的请求，是否需要向服务器发出一个新的适配器？JSON解析方法呢？我该怎么做Java 我有一个视图，在该视图中我有一个文本视图我想更新该文本视图吗？,java,android,json,Java,Android,Json,我有三个类，适配器类、投票类和一个活动，其中我的JSONrequest如下所示。问题是，你可以看到我在活动中调用我的JSONrequest，它将获得一个视图列表，在该视图中我有一个mVote textview。在我的适配器中，您还可以看到，当有人按下时，我有一个like按钮，希望mVotes从0更改为1。我从服务器获取所有数据，因此我假设我需要发出一个新的请求，是否需要向服务器发出一个新的适配器？JSON解析方法呢？我该怎么做 public class AdapterQuestion exten
public class AdapterQuestion extends RecyclerView.Adapter<AdapterQuestion.ViewQuestion>{
private LayoutInflater mLayoutInflater;
private ArrayList<QuestionData> data =new ArrayList<>();
public AdapterQuestion(Context context){
//get from context
mLayoutInflater=LayoutInflater.from(context);
}
public void setBloglist(ArrayList<QuestionData> data){
this.data =data;
notifyItemRangeChanged(0, this.data.size());
}
@Override
public ViewQuestion onCreateViewHolder(ViewGroup parent, int viewType){
ViewQuestion holder=new ViewQuestion(view);
return holder;
}
@Override
public void onBindViewHolder(ViewQuestion holder, int position) {
holder.answerText.setText(currentObj.getMtext());
holder.answerId.setText(currentObj.getId());
holder.mVotes.setText(currentObj.getVotes());
holder.mLikeButton.setTag(currentObj);
}
@Override
public int getItemCount() {
return data.size();
}
public class ViewQuestion extends RecyclerView.ViewHolder{
private TextView answerText;
private TextView answerId;
private TextView mVotes;
private LikeButton mLikeButton;
public ViewQuestion (View itemView){
super(itemView);
answerText=(TextView)itemView.findViewById(R.id.answerText);
answerId=(TextView)itemView.findViewById(R.id.answerId);
mVotes=(TextView)itemView.findViewById(R.id.VoteTextView);
mLikeButton= (LikeButton)itemView.findViewById(R.id.heart_buttons);
mLikeButton.setOnLikeListener(new OnLikeListener() {
@Override
public void liked(LikeButton likeButton) {
Voting vote = new Voting();
vote.onUpVote(answerId());
System.out.print("Adapter Position"+getAdapterPosition());
}
@Override
public void unLiked(LikeButton likeButton) {
Voting onDown=new Voting();
onDown.onDownVote(answerId());
}
});
}
public String getVoteView(){
String voteView=mVotes.getText().toString();
return voteView;
}
public String answerId(){
String converted=answerId.getText().toString();
return converted;
}
public int convertToInt(){
String converted=answerId.getText().toString();
int ConvertedInt=Integer.parseInt(converted);
return ConvertedInt;
}
}
}
public class Voting {
private VolleySingleton mVolleySingleton;
private RequestQueue mRequestQueue;
private AdapterVoteUpdate mAdapterVotes;
private ArrayList<QuestionData> updateVotes = new ArrayList<>();
public void onUpVote(final String answerId) {
final RequestQueue mrequestQueue = VolleySingleton.getInstance().getRequestQueue();
final String PUT_VOTE_UP = "url" + answerId + "url\n";
StringRequest PostVoteUp = new StringRequest(Request.Method.PUT, PUT_VOTE_UP, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
});
mrequestQueue.add(PostVoteUp);
}
public void onDownVote(final String answerId) {
System.out.println("Voted Down");
final RequestQueue mrequestQueue = VolleySingleton.getInstance().getRequestQueue();
final String PUT_VOTE_DOWN = "url" + answerId + "urul";
StringRequest PostVoteUp = new StringRequest(Request.Method.PUT, PUT_VOTE_DOWN, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
System.out.println("************Answer" + error + "error");
}
});
mrequestQueue.add(PostVoteUp);
}
公共类投票{
私人排球单打；
私有请求队列mRequestQueue；
私人AdapterNoteUpdate MadapterVoces；
private ArrayList updateVotes=new ArrayList（）；
公共void onUpVote（最终字符串应答ID）{
final RequestQueue MRRequestQueue=VolleySingleton.getInstance（）.getRequestQueue（）；
最后一个字符串PUT\u VOTE\u UP=“url”+answerId+“url\n”；
StringRequest PostVoteUp=新建StringRequest（Request.Method.PUT，PUT\u VOTE\u UP，new Response.Listener（））{
@凌驾
公共void onResponse（字符串响应）{
}
}，new Response.ErrorListener（）{
@凌驾
公共无效onErrorResponse（截击错误）{
}
});
mrequestQueue.add（PostVoteUp）；
}
公开无效onDownVote（最终字符串应答ID）{
System.out.println（“投票否决”）；
final RequestQueue MRRequestQueue=VolleySingleton.getInstance（）.getRequestQueue（）；
最后一个字符串PUT_VOTE_DOWN=“url”+answerId+“urul”；
StringRequest PostVoteUp=新的StringRequest（Request.Method.PUT，PUT\u VOTE\u DOWN，new Response.Listener（））{
@凌驾
公共void onResponse（字符串响应）{
}
}，new Response.ErrorListener（）{
@凌驾
公共无效onErrorResponse（截击错误）{
错误。printStackTrace（）；
System.out.println（“************回答”+错误+“错误”）；
}
});
mrequestQueue.add（PostVoteUp）；
}
public void JsonRequestMethod(String Id) {
mVolleySingleton = VolleySingleton.getInstance();
mRequestQueue = mVolleySingleton.getRequestQueue();
final String URL_ANSWER = "url" + Id + "url";
JsonArrayRequest request = new JsonArrayRequest(Request.Method.GET, URL_ANSWER, (String) null, new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
mListblogs.clear();
mListblogs = parseJSONResponseQuestion(response);
mAdapterQuestion.setBloglist(mListblogs);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
System.out.println(error);
}
});
mRequestQueue.add(request);
}
private ArrayList<QuestionData> parseJSONResponseQuestion(JSONArray response) {
if (!response.equals("")) {
ArrayList<QuestionData> questionDataArrayList = new ArrayList<>();
try {
StringBuilder data = new StringBuilder();
for (int i = 0; i < response.length(); i++) {
JSONObject currentQuestions = response.getJSONObject(i);
String text = currentQuestions.getString("text");
String questionId = currentQuestions.getString("questionId");
String votes = currentQuestions.getString("votes");
System.out.println(votes+" VOTES");
int voteInt=Integer.parseInt(votes);
System.out.println(voteInt);
String Answerid = currentQuestions.getString("id");
String selectedId = currentQuestions.getString("selected");
System.out.println(response.length() + "length");
data.append(text + Answerid + "\n");
System.out.println(data);
QuestionData questionData = new QuestionData();
questionData.setMtext(text);
questionData.setVotes(votes);
questionData.setId(Answerid);
questionData.setSelected(selectedId);
mListblogs.add(questionData);
}
System.out.println(data.toString());
} catch (JSONException e) {
e.printStackTrace();
}
}
return mListblogs;
}
public void JsonRequestMethod（字符串Id）{
mVolleySingleton=VolleySingleton.getInstance（）；
mRequestQueue=mVolleySingleton.getRequestQueue（）；
最终字符串URL\u ANSWER=“URL”+Id+“URL”；
JsonArrayRequest=newjsonarrayrequest（request.Method.GET，URL\u-ANSWER，（String）null，new-Response.Listener（）{
@凌驾
公共void onResponse（JSONArray响应）{
mListblogs.clear（）；
mListblogs=parseJSONResponseQuestion（响应）；
mAdapterQuestion.setBloglist（mListblogs）；
}
}，new Response.ErrorListener（）{
@凌驾
公共无效onErrorResponse（截击错误）{
系统输出打印项次（错误）；
}
});
mRequestQueue.add（请求）；
}
专用ArrayList parseJSONResponseQuestion（JSONArray响应）{
如果（！response.equals（“”）{
ArrayList questionDataArrayList=新的ArrayList（）；
试一试{
StringBuilder数据=新的StringBuilder（）；
对于（int i=0；iprivate ArrayList<QuestionData> data =new ArrayList<>();
@Override
public void onBindViewHolder(ViewQuestion holder, int position) {
holder.answerText.setText(currentObj.getMtext());
holder.answerId.setText(currentObj.getId());
holder.mVotes.setText(currentObj.getVotes());
holder.mVotes.setTag(currentObj);
holder.mLikeButton.setTag(holder);
}
mLikeButton.setOnLikeListener(new OnLikeListener() {
@Override
public void liked(LikeButton likeButton) {
Voting vote = new Voting();
vote.onUpVote(answerId());
final ViewQuestion holder=(ViewQuestionholder)likeButton.getTag();
currentObj co=(currentObj)holder.mVotes.getTag();
holder.mVotes.setText("16");
System.out.print("Adapter Position"+getAdapterPosition());
}
@Override
public void unLiked(LikeButton likeButton) {
Voting onDown=new Voting();
onDown.onDownVote(answerId());
final ViewQuestion holder=(ViewQuestionholder)likeButton.getTag();
currentObj co=(currentObj)holder.mVotes.getTag();
holder.mVotes.setText("14");
}
});