我的應用程序說它不幸停止工作（android應用程序）

這是第一個屏幕的代碼，並且我已經爲這兩個屏幕使用了所有導入語句。我有一個條件語句，用於檢查editText Boxes或ratingBar是否爲空。我的應用程序說它不幸停止工作（android應用程序）

public class BasicDetails extends AppCompatActivity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.basic_details_screen); 

     TextView textClass = (TextView)findViewById(R.id.textClass); 
     TextView textSchool = (TextView)findViewById(R.id.textSchool); 
     TextView textPhoto = (TextView)findViewById(R.id.textPhoto); 
     TextView textabtYear = (TextView)findViewById(R.id.textabtYear); 

     final EditText editClass = (EditText)findViewById(R.id.editClass); 
     final EditText editSchool = (EditText)findViewById(R.id.editSchool); 
     final EditText abtyear = (EditText)findViewById(R.id.abtYear); 

     //Button buttonPhoto = (Button)findViewById(R.id.buttonPhoto); 
     Button buttonBnext = (Button)findViewById(R.id.buttonBnext); 

     buttonBnext.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
       // Performs action on click 
       if ((editClass.getText().length() != 0) && (editSchool.getText().length() != 0) && (abtyear.getText().length() != 0)) { 
        Intent intent = new Intent(BasicDetails.this, PortfolioDetails.class); 
        startActivity(intent); 
        //opens the portfolio details class 

       } else { 
        Toast.makeText(BasicDetails.this, "Please enter all the details!!!", Toast.LENGTH_LONG).show(); 
       } 
      } 
     }); 

    } 
}

這是下一個屏幕的代碼。所以基本上這需要你從一個屏幕到其他的意圖，但我得到一個錯誤消息對我的模擬器，「我的應用程序（或GoPort）已不幸停止工作」

public class PortfolioDetails extends AppCompatActivity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.porfolio_details_screen); 

     TextView textAchievements = (TextView)findViewById(R.id.textAchievements); 
     TextView textProgress = (TextView)findViewById(R.id.textProgress); 
     TextView textFeedback = (TextView)findViewById(R.id.textFeedback); 

     final EditText editAchievements = (EditText)findViewById(R.id.editAchievements); 
     final EditText editFeedback = (EditText)findViewById(R.id.editFeedback); 

     final RatingBar ratingBar = (RatingBar)findViewById(R.id.ratingBar); 

     Button buttonCnext = (Button)findViewById(R.id.buttonCNext); 

     buttonCnext.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
       // Performs action on click 

       if ((editAchievements.getText().length() != 0) && (editFeedback.getText().length() != 0)) { 

        ratingBar.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() { 
         public void onRatingChanged(RatingBar ratingBar, float rating, 
                boolean fromUser) { 
          // place intent for new activity 

          Intent intent = new Intent(PortfolioDetails.this, SlamDetails.class); 
          startActivity(intent); 
          //opens the portfolio details class 

         } 
        }); 
       } else { 
        Toast.makeText(PortfolioDetails.this, "Please enter all the details!!!", Toast.LENGTH_LONG).show(); 
       } 
      } 
     }); 

    } 
}

我在日誌中獲得此：