问Android:无法以编程方式设置布局文件中的值

EN

package com.Example.assesmenttool;


public class Aptitude extends Activity implements OnClickListener {

    DBHelper helper;
    SQLiteDatabase db;
    Button btnBegin,btnnext;
    int count = 0;

    //Sub category Buttons
    Button btnaptitude5,btnaptitude4,btnaptitude3,btnaptitude2,btnaptitude1;

    String Question_ID,Title,TitleDescription,QuestionText,QuestionTemplate,QuestionImage;

    //String SubModuleQuestion_ID;

    TextView tvTitle,tvInstructions,tvQuestionText;

    RadioGroup rgtemplate4images;
    ImageView img;
     RelativeLayout aptitudesubcateg,temp4optimage;



    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.aptitude);

          aptitudesubcateg = (RelativeLayout) findViewById(R.id.aptitudesubcateg);
          temp4optimage = (RelativeLayout) findViewById(R.id.temp4optimage);


         aptitudesubcateg.setVisibility(View.GONE);
         temp4optimage.setVisibility(View.GONE);


        btnaptitude1 = (Button)findViewById(R.id.btnaptitude1);
        btnaptitude2 = (Button)findViewById(R.id.btnaptitude2);
        btnaptitude3 = (Button)findViewById(R.id.btnaptitude3);
        btnaptitude4 = (Button)findViewById(R.id.btnaptitude4);
        btnaptitude5 = (Button)findViewById(R.id.btnaptitude5);

        btnaptitude1.setOnClickListener(this);
        btnaptitude2.setOnClickListener(this);
        btnaptitude3.setOnClickListener(this);
        btnaptitude4.setOnClickListener(this);
        btnaptitude5.setOnClickListener(this);

        helper=new DBHelper(this);
        //Resources res = getResources();
        //String[] myBooks = res.getStringArray(R.array.my_questions);



        btnBegin = (Button)findViewById(R.id.btnBeginAptitude);

        btnBegin.setOnClickListener(this);

    }

     public int getcount(String moduleID, String SubModuleID)
     {
         count = 0;
         String selectQuery = "Select * from TableQuestionMaster where Module_ID = "+moduleID+" AND SubModule_ID ="+SubModuleID;

            SQLiteDatabase db = helper.getReadableDatabase();
            Cursor cursor = db.rawQuery(selectQuery, null);
            count =  cursor.getCount();

            Toast.makeText(this, String.valueOf(count) ,Toast.LENGTH_LONG).show(); 

            cursor.close();
            db.close();

    return count; 
     }



       public void getAllQuestionsAptitude(String moduleID, String SubModuleID,String SubModuleQuestion_ID){



           SQLiteDatabase db = helper.getReadableDatabase();
           Cursor c = null;

           if (count>0)
            {

           //   SubModuleQuestion_ID = "1";
                   String selectQuestion = "Select * from TableQuestionMaster where Module_ID = "+moduleID+" AND SubModule_ID ="+SubModuleID+" AND SubModuleQuestion_ID ="+SubModuleQuestion_ID;
                      c = db.rawQuery(selectQuestion, null);
            if (c.moveToFirst()) {
                do {


                    Question_ID = c.getString(c.getColumnIndex("Question_ID")); 

                    Title = c.getString(c.getColumnIndex("Title"));


                    TitleDescription = c.getString(c.getColumnIndex("TitleDescription"));


                    QuestionText = c.getString(c.getColumnIndex("QuestionText"));


                    QuestionTemplate = c.getString(c.getColumnIndex("QuestionTemplate"));


                    QuestionImage = c.getString(c.getColumnIndex("QuestionImage"));

                    Toast.makeText(this,Question_ID+" "+Title+" "+TitleDescription+" "+QuestionText+" "+QuestionTemplate+" "+QuestionImage,Toast.LENGTH_LONG).show();



                } while (c.moveToNext());        
            }
            }
            else

            {
                 Toast.makeText(this,"NO question to display",Toast.LENGTH_LONG).show();

            }


            // closing connection
            c.close();
            db.close();

        }

       public void displayquestions()
       {
           Toast.makeText(this,"count on display Q is"+ count,Toast.LENGTH_LONG).show();
           if (count >0)
           {
               getAllQuestionsAptitude("1","1",String.valueOf(count));

                    aptitudesubcateg.setVisibility(View.GONE);      
                    temp4optimage.setVisibility(View.VISIBLE);    
                    tvTitle = (TextView)findViewById(R.id.tvTitleTemplate4optoinsImage);
                    tvInstructions = (TextView)findViewById(R.id.tvInstructionstemplate4);
                    tvQuestionText = (TextView)findViewById(R.id.tvQuestionTextTemplate4Image);

                    img = (ImageView)findViewById(R.id.imageViewtemplate4options);

                    tvTitle.setText(Title);
                    tvInstructions.setText(TitleDescription);
                    tvQuestionText.setText(QuestionText);

                    String imgName = QuestionImage; // specify here your image name fetched from db
                    String uri = "drawable/" + imgName;
                    int icon = getResources().getIdentifier(uri, "drawable", getPackageName());
                    img.setImageResource(icon);

                    //NextQuestion();
           }
           else
           {
               Toast.makeText(this,"NO question to display",Toast.LENGTH_LONG).show();
           }


       }

       public void NextQuestion()
       {
           if (count>0)
           {
           count = count - 1;
           displayquestions();
           }

       }




    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub

        if (v==btnBegin)
        {
             aptitudesubcateg.setVisibility(View.VISIBLE);
              temp4optimage.setVisibility(View.GONE);

        }       
            if (v== btnaptitude1)
            {               
                      getcount("1", "1");
                      displayquestions();          

            }

            if (v== btnaptitude2)
            {
                  getcount("1", "2");
                  displayquestions();
            //  getAllQuestionsAptitude("1","2");
            }

            if (v== btnaptitude3)
            {
                  getcount("1", "3");
                  displayquestions();

                //getAllQuestionsAptitude("1","3");
            }

            if (v== btnaptitude4)
            {
            //  getAllQuestionsAptitude("1","1");
                 getcount("1", "4");
                 displayquestions();
            }

            if (v== btnaptitude5)
            {
            //  getAllQuestionsAptitude("1","1");
                 getcount("1", "5");
                 displayquestions();
            }           


        }



    }

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/back" >

    <TextView
        android:id="@+id/tvInstructionsAptitude"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/tvQuestionTextTemplate4Image"
        android:layout_alignParentTop="true"
        android:layout_alignRight="@+id/TextView01"
        android:layout_marginTop="93dp"
        android:text="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam nibh ex, elementum non bibendum ac, consequat a sem. Proin aliquet arcu id lacus interdum, sed fermentum neque sollicitudin. Vestibulum mauris massa, vulputate tincidunt quam vel, egestas tincidunt nisi. Ut ut nulla sagittis, aliquet lectus vitae, pretium nisi. Duis maximus, magna vitae ultricies consectetur, ex felis congue turpis, id scelerisque nisl ex at turpis. Aenean dui sapien, euismod at sem non, rhoncus molestie urna. Mauris condimentum risus felis, nec iaculis orci accumsan nec. Vivamus pharetra ultricies quam a aliquam. Praesent facilisis turpis malesuada massa interdum consequat. In hac habitasse platea dictumst. Integer efficitur nibh risus, ac mattis mi porta ut. Nam leo ex, pulvinar eu orci vel, pretium maximus velit. Pellentesque rhoncus sapien felis, in cursus eros malesuada imperdiet."
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/tvQuestionTextTemplate4Image"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="53dp"
        android:layout_marginTop="40dp"
        android:text="Instructions"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/TextView01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/tvQuestionTextTemplate4Image"
        android:layout_alignBottom="@+id/tvQuestionTextTemplate4Image"
        android:layout_alignParentRight="true"
        android:layout_marginRight="36dp"
        android:text="Time : 10 Mins"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <Button
        android:id="@+id/btnBeginAptitude"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/tvInstructionsAptitude"
        android:layout_alignRight="@+id/tvInstructionsAptitude"
        android:layout_below="@+id/tvInstructionsAptitude"
        android:layout_marginTop="42dp"
        android:text="Begin" />

    <include
        android:id="@+id/aptitudesubcateg"
        android:layout_width="match_parent"
        android:layout_height="match_parent"

        layout="@layout/aptitudesubcategory" />

    <include
        android:id="@+id/temp4optimage"
        android:layout_width="fill_parent"
        android:layout_height="match_parent"
        layout="@layout/template4optionsimage" />

</RelativeLayout>