我正在开发一个测验应用程序，其中用户从每张卡中选择一个单选按钮（每张卡包含一个带有四个选项的问题），当用户单击 floatingActionButton 时，用户可以看到他/她在下一个活动中解决了什么。问题编号下面的复选框表示他已经解决了该问题。 我到处搜索，但找不到任何帮助。我被困在我的项目中。 这是我的代码
MainActivity.java
package com.pratyush.onlineexamapp;
public class MainActivity extends AppCompatActivity {
private ArrayList<ModelClass> questionList = new ArrayList<>();
private RecyclerView recyclerView;
FloatingActionButton fabactsbmt,fabctprv;
private QuestionAdapter qAdapter;
private static final String FORMAT = "%02d:%02d";
private RadioGroup rg;
private RadioButton rb;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = (RecyclerView) findViewById(R.id.rcyclvw);
final TextView timer=(TextView)findViewById(R.id.timer) ;
int selectedId=rg.getCheckedRadioButtonId();
rb=(RadioButton)findViewById(selectedId);
qAdapter= new QuestionAdapter(this);
fabactsbmt=(FloatingActionButton)findViewById(R.id.sbmtBtn);
fabctprv=(FloatingActionButton)findViewById(R.id.prevwBtn);
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext(),LinearLayoutManager.HORIZONTAL, false);
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setAdapter(qAdapter);
fabctprv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent it= new Intent(MainActivity.this,PreviewDetails.class);
String selectedFromList = (recyclerView.getItemAtPosition(position));
it.putIntegerArrayListExtra("Respone",);
rg.clearCheck();
startActivity(it);
}
});
fabactsbmt.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(MainActivity.this,"Your test will be submitted without taking you to Preview Activity",Toast.LENGTH_SHORT).show();
}
});
new CountDownTimer(60000, 1000) { // adjust the milli seconds here
public void onTick(long millisUntilFinished) {
timer.setText("Time Left:" + " " + String.format(FORMAT,
TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished) - TimeUnit.HOURS.toMinutes(
TimeUnit.MILLISECONDS.toHours(millisUntilFinished)),
TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) - TimeUnit.MINUTES.toSeconds(
TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished))) + "/01:00");
}
public void onFinish() {
AlertDialog.Builder builder = new AlertDialog.Builder(
MainActivity.this);
builder.setTitle("Time Out!!!");
builder.setMessage("Your Score is" + " " + 100);
builder.setCancelable(false);
/* builder.setNegativeButton("NO",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
Toast.makeText(getApplicationContext(),"No is clicked",Toast.LENGTH_LONG).show();
}
});*/
builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
System.exit(0);
}
});
builder.show();
}
}.start();
prepareTest();
}
public void prepareTest(){
ModelClass que1=new ModelClass();
que1.setQueNo("Question:- 1/11");
que1.setQue("who is the prime minister of india?");
que1.setOptn1(" Manmohan Singh");
que1.setOptn2(" Sonia Gandhi");
que1.setOptn3(" Narendra Modi");
que1.setOptn4(" Amit Shah");
que1.setAnswer("Narendra Modi");
questionList.add(que1);
ModelClass que2=new ModelClass();
que2.setQueNo("Question:- 2/11");
que2.setQue("who is the firs prime minister of india?");
que2.setOptn1("a) Manmohan Singh");
que2.setOptn2("b) Sonia Gandhi");
que2.setOptn3("c) Narendra Modi");
que2.setOptn4("d) Rajeev Gandhi");
questionList.add(que2);
ModelClass que3=new ModelClass();
que3.setQueNo("Question:- 3/11");
que3.setQue("who is the president of india?");
que3.setOptn1("a) Manmohan Singh");
que3.setOptn2("b) Sonia Gandhi ");
que3.setOptn3("c) Narendra Modi");
que3.setOptn4("d) Pratibha Patil");
questionList.add(que3);
ModelClass que4=new ModelClass();
que4.setQueNo("Question:- 4/11");
que4.setQue("Nobel prize is awarded for which of the following disciplines:");
que4.setOptn1("a) Literacy,physics");
que4.setOptn2("b) Chemistry");
que4.setOptn3("c) Medicine or Physiology");
que4.setOptn4("d) All of the Above");
questionList.add(que4);
ModelClass que5=new ModelClass();
que5.setQueNo("Question:- 5/11");
que5.setQue("Garampani Sanctuary is locate in which of the following places:");
que5.setOptn1("a) Junagarh, Gujarat");
que5.setOptn2("b) Kohima, Nagaland");
que5.setOptn3("c) Diphu, Assam");
que5.setOptn4("d) Gangtok, Sikkim");
questionList.add(que5);
ModelClass que6=new ModelClass();
que6.setQueNo("Question:- 6/11");
que6.setQue(" Entomology studies what?");
que6.setOptn1("a) Behavior of human beings");
que6.setOptn2("b) Insects");
que6.setOptn3("c) The origin and history of technical and scientific terms");
que6.setOptn4("d) The formation of rocks");
questionList.add(que6);
ModelClass que7=new ModelClass();
que7.setQueNo("Question:- 7/11");
que7.setQue("Galileo was an astronomer who");
que7.setOptn1("a) developed the telescope");
que7.setOptn2("b) discovered four satellites of Jupiter");
que7.setOptn3("c) discovered that the movement of pendulum produces a regular time measurement");
que7.setOptn4("d) All the above");
questionList.add(que7);
ModelClass que8=new ModelClass();
que8.setQueNo("Question:- 8/11");
que8.setQue("Who is the father of geometry?");
que8.setOptn1("a) Aristotle");
que8.setOptn2("b) Pythagoras");
que8.setOptn3("c) Euclid");
que8.setOptn4("d) Kepler");
questionList.add(que8);
ModelClass que9=new ModelClass();
que9.setQueNo("Question:- 9/11");
que9.setQue("Indian Player Jude Felix is associated with");
que9.setOptn1("a) Volleyball");
que9.setOptn2("b) Football");
que9.setOptn3("c) Hockey");
que9.setOptn4("d) Tennis");
questionList.add(que9);
ModelClass que10=new ModelClass();
que10.setQueNo("Question:- 10/11");
que10.setQue("The Indian, who holds the pride of beating the computers in mathematical wizard is:");
que10.setOptn1("a) Shakuntala Devi");
que10.setOptn2("b) Raja Ramanna");
que10.setOptn3("c) Ramanujam");
que10.setOptn4("d) Rina Panigrahi");
questionList.add(que10);
ModelClass que11=new ModelClass();
que11.setQueNo("Question:- 11/11");
que11.setQue("Who is popularly called as the Iron Man of India?");
que11.setOptn1("a) Subhash Chandra Bose");
que11.setOptn2("b) Sardar Vallabhbhai Patel");
que11.setOptn3("c) Govind Ballabh Pant");
que11.setOptn4("d) Jawaharlal Nehru");
questionList.add(que11);
}
public class QuestionAdapter extends RecyclerView.Adapter<QuestionAdapter.MyViewHolder> {
Context context;
public QuestionAdapter(Context context) {
this.context = context;
}
@Override
public QuestionAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.question_format, parent, false);
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(QuestionAdapter.MyViewHolder holder, int position) {
ModelClass model = questionList.get(position);
holder.queNo.setText(model.getQueNo());
holder.que.setText(model.getQue());
holder.opt1.setText(model.getOptn1());
holder.opt2.setText(model.getOptn2());
holder.opt3.setText(model.getOptn3());
holder.opt4.setText(model.getOptn4());
// Picasso.with(context).load(model.getImg()).into(holder.imgvw);
}
@Override
public int getItemCount() {
return questionList.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder {
private TextView queNo,que,opt1,opt2,opt3,opt4;
public MyViewHolder(View view) {
super(view);
//RadioGroup radioGroup=(RadioGroup)findViewById(R.id.rgrp);
//RadioButton checkedButton = (RadioButton)findViewById(radioGroup.getCheckedRadioButtonId());
queNo = (TextView) view.findViewById(R.id.qNotext);
que = (TextView) view.findViewById(R.id.queText);
opt1 = (RadioButton) view.findViewById(R.id.opt1);
opt2 = (RadioButton) view.findViewById(R.id.opt2);
opt3 = (RadioButton) view.findViewById(R.id.opt3);
opt4 = (RadioButton) view.findViewById(R.id.opt4);
}
}
}
这是我的预览活动。java
package com.pratyush.onlineexamapp;
public class PreviewDetails extends AppCompatActivity {
private ArrayList<Model> modelArrayList= new ArrayList<>();
GridView gridView;
FloatingActionButton finalSubmit;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_preview_details);
gridView=(GridView)findViewById(R.id.gridView);
finalSubmit=(FloatingActionButton)findViewById(R.id.finalsbmt);
prepareData();
ResponseAdapter adapter=new ResponseAdapter(this);
gridView.setAdapter(adapter);
finalSubmit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(PreviewDetails.this,"Your Test will be submitted",Toast.LENGTH_SHORT).show();
}
});
}
public void prepareData(){
Model qno1=new Model();
qno1.setQnumber("Question no.1");
qno1.setCb(true);
modelArrayList.add(qno1);
Model qno2=new Model();
qno2.setQnumber("Question no.2");
qno2.setCb(true);
modelArrayList.add(qno2);
Model qno3=new Model();
qno3.setQnumber("Question no.3");
qno3.setCb(false);
modelArrayList.add(qno3);
Model qno4=new Model();
qno4.setQnumber("Question no.4");
qno4.setCb(true);
modelArrayList.add(qno4);
Model qno5=new Model();
qno5.setQnumber("Question no.5");
qno5.setCb(false);
modelArrayList.add(qno5);
Model qno6=new Model();
qno6.setQnumber("Question no.6");
qno6.setCb(true);
modelArrayList.add(qno6);
Model qno7=new Model();
qno7.setQnumber("Question no.7");
qno7.setCb(true);
modelArrayList.add(qno7);
Model qno8=new Model();
qno8.setQnumber("Question no.8");
qno8.setCb(true);
modelArrayList.add(qno8);
Model qno9=new Model();
qno9.setQnumber("Question no.9");
qno9.setCb(false);
modelArrayList.add(qno9);
Model qno10=new Model();
qno10.setQnumber("Question no.10");
qno10.setCb(true);
modelArrayList.add(qno10);
Model qno11=new Model();
qno11.setQnumber("Question no.11");
qno11.setCb(true);
modelArrayList.add(qno11);
}
private class ResponseAdapter extends BaseAdapter{
private Context context;
private LayoutInflater layoutInflater;
private ResponseAdapter( Context context){
this.context=context;
}
@Override
public int getCount() {
return modelArrayList.size();
}
@Override
public Object getItem(int i) {
return modelArrayList.get(i);
}
@Override
public long getItemId(int i) {
return 0;
}
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
if (layoutInflater==null)
layoutInflater=(LayoutInflater)context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
if (view==null)
view=layoutInflater.inflate(R.layout.custom_grid,null);
TextView tv=(TextView) view.findViewById(R.id.tetView);
CheckBox checkBox=(CheckBox) view.findViewById(R.id.checkboxe);
tv.setText(modelArrayList.get(i).getQnumber());
checkBox.setChecked(modelArrayList.get(i).getCb());
return view;
}
}
现在我只是在复选框中手动设置了这些值。谢谢！！！
答案 0 :(得分：0)
您可以从广播组中获取选定的项目。一个单选组由一些单选按钮组成。
radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
switch (i){
case R.id.ans1:
//may be your answer is correct.
//Do existing works!
//Save the data to the database.
// Retrive the data from the database in the next activity(Intent)
}
}
});
答案 1 :(得分：0)
好吧，这是一个类，其中的数据将从Firebase数据库中检索，并且ar beign的问题由用户解决，然后再次上载到Firebase……可能会帮助您：
id01