似乎无法放置while循环在正确的位置 - noob Java Android

Question

首先，道歉，我是这一切的新手，我正在努力使用Android / Java。我花了好几天看东西，我知道我做了一些愚蠢的事情，但我很感激有人告诉我为什么/我哪里出错了。

该应用是一个简单的测验，放一张照片，使用微调器选择答案，按一个按钮提交，获取一个祝酒消息来验证并添加一个分数。我知道代码是可怕的和黑客，但我缺乏更优雅地做到这一点的知识（部分原因我在这里）。我正在尝试使用变量while放置一个sflags循环，该变量将从0到26进行计数。当我放置它时，我似乎永远不能正确放置它以便它起作用。我怀疑当我尝试包装它时，有些代码会被破坏。

这是（可怕的）代码：

public class MainActivity extends Activity implements TextWatcher {
   private static final String TAG = "MainActivity";

   private EditText mName;
   private EditText mEmail;
   private ListView countrieslist;
   private String comments;
   private int score = 0;
   private int sflags = 0;
   private String emailok;
   private String answer;
   private String flags;
   private Spinner spinnerct;
   private Object countries;

   // private AdapterView<ListAdapter> spinnerct;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      countries = getResources().getStringArray(R.array.flagnames);
      mName = (EditText) findViewById(R.id.name);
      mEmail = (EditText) findViewById(R.id.email);

      mEmail.addTextChangedListener(this);
   }

   @Override
   public void afterTextChanged(Editable s) {
      emailok = s.toString();
      String sub_but = getString(R.string.sub_but);

      boolean valid = emailok.length() > 0 && 
                      emailok.toLowerCase().indexOf(sub_but) == -1;

      View view = findViewById(R.id.imageButton1);


      boolean isVisible = view.getVisibility() == View.VISIBLE;
      if (isVisible == valid) {
         // No animation required if both values are true or both values are
         // false
         return;
      }
      Animation anim;

      if (valid) {
         view.setVisibility(View.VISIBLE);
         // Create a new animation object
         anim = AnimationUtils.makeInAnimation(this, true);
      } else {
         // Create a new animation object
         anim = AnimationUtils.makeOutAnimation(this, true);
         view.setVisibility(View.INVISIBLE);
      }
      // Tell the view it's time to start animating
      view.startAnimation(anim);
   }

   public void thequiz(View view) {

      setContentView(R.layout.activity_quiz);

      Toast.makeText(
         this.getApplicationContext(),
         "Thanks  ! Now try to identify the flags of these European Countries!",
         Toast.LENGTH_LONG
      ).show();

      sflags = 0;
      score = 0;

      // LinearLayOut Setup
      LinearLayout linearLayout = new LinearLayout(this);
      linearLayout.setOrientation(LinearLayout.VERTICAL);

      linearLayout.setLayoutParams(new LayoutParams(
      LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));

      // ImageView Setup
      ImageView imageView = new ImageView(this);

      // Constructing the filename using "flag" + the item number from
      // variable loop
      // using GetIndentifier to return resource to a string

      // while loop start here?
      //while (sflags<27){

      // display correct flag
      imageView.setImageResource( 
         this.getResources().getIdentifier("drawable/flag" + sflags, null, this.getPackageName())
      );
      // setting image position
      imageView.setLayoutParams(
         new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)
      );
      // =================================================================
      // creating spinner object
      final Spinner spinnerct = new Spinner(this);
      // Now to populate spinner with contents of array flagnames[]
      ArrayAdapter<String> spinnercountry = new ArrayAdapter<String>(
        this, android.R.layout.simple_spinner_dropdown_item, 
        getResources().getStringArray(R.array.flagnames)
      );
      spinnerct.setAdapter(spinnercountry);
      // creating button
      Button myButton = new Button(this);
      myButton.setText("Submit Answer");
      myButton.setBackgroundColor(Color.rgb(250, 200, 250));
      // ===================================================================
      // adding view to layout
      linearLayout.addView(imageView);
      linearLayout.addView(spinnerct);
      linearLayout.addView(myButton);
      // Show layout
      setContentView(linearLayout);

      // OnclickListener to see when button is clicked
      //=========================================================
      myButton.setOnClickListener(new View.OnClickListener() {
         @Override
         public void onClick(View v) {
            // TODO Auto-generated method stub
            answer = spinnerct.getSelectedItem().toString();
            Toast.makeText(
               MainActivity.this, 
               "You selected " + answer, 
               Toast.LENGTH_SHORT
            ).show();
            // now check the answer is right by calling checkanswer()
            //=======================================================
            boolean tester = false;
            checkanswer(tester); // jumps to procedure, returns boolean

            if (tester = true) {
               score = score + 1;
               Toast.makeText(
                  MainActivity.this, 
                  "Well done, correct answer! Your Score is " + score + " out of 27", 
                  Toast.LENGTH_LONG
               ).show();
            }
            //========================================================
            if (tester != true) {
               Toast.makeText(
                  MainActivity.this,
                  "Sorry wrong answer! ",
                  Toast.LENGTH_SHORT
               ).show();
            }
            //=========================================================
            sflags = sflags + 1;
         }
      });
   };


   // sendSMS();
   // sendEmail();
   // }

   //=======================================================
   @Override
   public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
      // TODO Auto-generated method stub

   }
   //========================================================
   @Override
   public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
      // TODO Auto-generated method stub

   }
   //=========================================================
   public void checkanswer(boolean Isitright) {
      if (sflags == 0 && answer == "Estonia") {
         Isitright = true;
      }

   }
   //=======================================================
}