Панель инструментов не отображается

Question

Мне нужна панель инструментов для отображения на всех экранах, но панель инструментов исчезает, как только ResultActivity. Java встает. Кто-нибудь знает, как сделать панель инструментов? Я пробовал использовать getSupportActionBar().setDisplayHomeAsUpEnabled(true); и менял activity на AppCompatActivity, но я не могу использовать кнопку «Назад».

QuizF.Java

import android.content.Intent; 
import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.Menu; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.Button; 
import android.widget.RadioButton; 
import android.widget.RadioGroup; 
import android.widget.TextView; 

import java.util.List; 


public class QuizF extends Fragment { 
List<Question> quesList; 
int score=0; 
int qid=0; 
Question currentQ; 
TextView txtQuestion; 
RadioButton rda, rdb, rdc; 
Button butNext; 

View myView; 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
    myView = inflater.inflate(R.layout.activity_quiz,container,false); 


    DbHelper db=new DbHelper(getActivity()); 
    quesList=db.getAllQuestions(); 
    currentQ=quesList.get(qid); 
    txtQuestion=(TextView)myView.findViewById(R.id.textView1); 
    rda=(RadioButton)myView.findViewById(R.id.radio0); 
    rdb=(RadioButton)myView.findViewById(R.id.radio1); 
    rdc=(RadioButton)myView.findViewById(R.id.radio2); 
    butNext=(Button)myView.findViewById(R.id.button1); 
    setQuestionView(); 
    butNext.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      RadioGroup grp = (RadioGroup) myView.findViewById(R.id.radioGroup1); 
      RadioButton answer = (RadioButton) myView.findViewById(grp.getCheckedRadioButtonId()); 
      Log.d("yourans", currentQ.getANSWER() + " " + answer.getText()); 
      if (currentQ.getANSWER().equals(answer.getText())) { 
       score++; 
       Log.d("score", "Your score" + score); 
      } 
      if (qid < 5) { 
       currentQ = quesList.get(qid); 
       setQuestionView(); 
      } else { 
       Intent intent = new Intent(getActivity(), ResultActivity.class); 
       Bundle b = new Bundle(); 
       b.putInt("score", score); //Your score 
       intent.putExtras(b); //Put your score to your next Intent 
       startActivity(intent); 
       getActivity().finish(); 
      } 
     } 
    }); 
    return myView; 
} 


public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getActivity().getMenuInflater().inflate(R.menu.activity_quiz, menu); 
    return true; 
} 
private void setQuestionView() 
{ 
    txtQuestion.setText(currentQ.getQUESTION()); 
    rda.setText(currentQ.getOPTA()); 
    rdb.setText(currentQ.getOPTB()); 
    rdc.setText(currentQ.getOPTC()); 
    qid++; 
} 
} 

ResultActivity.Java

import android.app.Activity; 
import android.os.Bundle; 
import android.support.v7.app.AppCompatActivity; 
import android.view.Menu; 
import android.widget.RatingBar; 
import android.widget.TextView; 

public class ResultActivity extends AppCompatActivity { 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    getSupportActionBar().setDisplayHomeAsUpEnabled(true); 
    setContentView(R.layout.activity_result); 
    //get rating bar object 
    RatingBar bar=(RatingBar)findViewById(R.id.ratingBar1); 
    bar.setNumStars(5); 
    bar.setStepSize(0.5f); 
    //get text view 
    TextView t=(TextView)findViewById(R.id.textResult); 
    //get score 
    Bundle b = getIntent().getExtras(); 
    int score= b.getInt("score"); 
    //display score 
    bar.setRating(score); 
    switch (score) 
    { 
     case 0:t.setText("Are you serious?"); 
      break; 
    case 1: t.setText("Try a little harder, next time."); 
     break; 
    case 2: t.setText("Oopsie! Better Luck Next Time!"); 
    break; 
    case 3: 
    case 4:t.setText("Hmmmm.. Someone's been reading a lot of trivia"); 
    break; 
    case 5:t.setText("Who are you? A trivia wizard???"); 
    break; 
    } 
} 
@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.activity_result, menu); 
    return true; 
} 
} 

DBhelper.Java

import android.content.ContentValues; 
import android.content.Context; 
import android.database.Cursor; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteOpenHelper; 

import java.util.ArrayList; 
import java.util.List; 

public class DbHelper extends SQLiteOpenHelper { 
private static final int DATABASE_VERSION = 1; 
// Database Name 
private static final String DATABASE_NAME = "triviaQuiz"; 
// tasks table name 
private static final String TABLE_QUEST = "quest"; 
// tasks Table Columns names 
private static final String KEY_ID = "id"; 
private static final String KEY_QUES = "question"; 
private static final String KEY_ANSWER = "answer"; //correct option 
private static final String KEY_OPTA= "opta"; //option a 
private static final String KEY_OPTB= "optb"; //option b 
private static final String KEY_OPTC= "optc"; //option c 
private SQLiteDatabase dbase; 
public DbHelper(Context context) { 
    super(context, DATABASE_NAME, null, DATABASE_VERSION); 
} 
@Override 
public void onCreate(SQLiteDatabase db) { 
    dbase=db; 
    String sql = "CREATE TABLE IF NOT EXISTS " + TABLE_QUEST + " (" 
      + KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + KEY_QUES 
      + " TEXT, " + KEY_ANSWER+ " TEXT, "+KEY_OPTA +" TEXT, " 
      +KEY_OPTB +" TEXT, "+KEY_OPTC+" TEXT)"; 
    db.execSQL(sql);   
    addQuestions(); 
    //db.close(); 
} 
private void addQuestions() 
{ 
    Question q1=new Question("Which company is the largest manufacturer" + 
      " of network equipment?","HP", "IBM", "CISCO", "CISCO"); 
    this.addQuestion(q1); 
    Question q2=new Question("Which of the following is NOT " + 
      "an operating system?", "SuSe", "BIOS", "DOS", "BIOS"); 
    this.addQuestion(q2); 
    Question q3=new Question("Which of the following is the fastest" + 
      " writable memory?","RAM", "FLASH","Register","Register"); 
    this.addQuestion(q3); 
    Question q4=new Question("Which of the following device" + 
      " regulates internet traffic?", "Router", "Bridge", "Hub","Router"); 
    this.addQuestion(q4); 
    Question q5=new Question("Which of the following is NOT an" + 
      " interpreted language?","Ruby","Python","BASIC","BASIC"); 
    this.addQuestion(q5); 
} 
@Override 
public void onUpgrade(SQLiteDatabase db, int oldV, int newV) { 
    // Drop older table if existed 
    db.execSQL("DROP TABLE IF EXISTS " + TABLE_QUEST); 
    // Create tables again 
    onCreate(db); 
} 
// Adding new question 
public void addQuestion(Question quest) { 
    //SQLiteDatabase db = this.getWritableDatabase(); 
    ContentValues values = new ContentValues(); 
    values.put(KEY_QUES, quest.getQUESTION()); 
    values.put(KEY_ANSWER, quest.getANSWER()); 
    values.put(KEY_OPTA, quest.getOPTA()); 
    values.put(KEY_OPTB, quest.getOPTB()); 
    values.put(KEY_OPTC, quest.getOPTC()); 
    // Inserting Row 
    dbase.insert(TABLE_QUEST, null, values);   
} 
public List<Question> getAllQuestions() { 
    List<Question> quesList = new ArrayList<Question>(); 
    // Select All Query 
    String selectQuery = "SELECT * FROM " + TABLE_QUEST; 
    dbase=this.getReadableDatabase(); 
    Cursor cursor = dbase.rawQuery(selectQuery, null); 
    // looping through all rows and adding to list 
    if (cursor.moveToFirst()) { 
     do { 
      Question quest = new Question(); 
      quest.setID(cursor.getInt(0)); 
      quest.setQUESTION(cursor.getString(1)); 
      quest.setANSWER(cursor.getString(2)); 
      quest.setOPTA(cursor.getString(3)); 
      quest.setOPTB(cursor.getString(4)); 
      quest.setOPTC(cursor.getString(5)); 
      quesList.add(quest); 
     } while (cursor.moveToNext()); 
    } 
    // return quest list 
    return quesList; 
} 
public int rowcount() 
{ 
    int row=0; 
    String selectQuery = "SELECT * FROM " + TABLE_QUEST; 
    SQLiteDatabase db = this.getWritableDatabase(); 
    Cursor cursor = db.rawQuery(selectQuery, null); 
    row=cursor.getCount(); 
    return row; 
} 
} 

Question.Java

public class Question { 
private int ID; 
private String QUESTION; 
private String OPTA; 
private String OPTB; 
private String OPTC; 
private String ANSWER; 
public Question() 
{ 
    ID=0; 
    QUESTION=""; 
    OPTA=""; 
    OPTB=""; 
    OPTC=""; 
    ANSWER=""; 
} 
public Question(String qUESTION, String oPTA, String oPTB, String oPTC, 
     String aNSWER) { 

    QUESTION = qUESTION; 
    OPTA = oPTA; 
    OPTB = oPTB; 
    OPTC = oPTC; 
    ANSWER = aNSWER; 
} 
public int getID() 
{ 
    return ID; 
} 
public String getQUESTION() { 
    return QUESTION; 
} 
public String getOPTA() { 
    return OPTA; 
} 
public String getOPTB() { 
    return OPTB; 
} 
public String getOPTC() { 
    return OPTC; 
} 
public String getANSWER() { 
    return ANSWER; 
} 
public void setID(int id) 
{ 
    ID=id; 
} 
public void setQUESTION(String qUESTION) { 
    QUESTION = qUESTION; 
} 
public void setOPTA(String oPTA) { 
    OPTA = oPTA; 
} 
public void setOPTB(String oPTB) { 
    OPTB = oPTB; 
} 
public void setOPTC(String oPTC) { 
    OPTC = oPTC; 
} 
public void setANSWER(String aNSWER) { 
    ANSWER = aNSWER; 
} 

} 

Answer 1

Вам нужно включить панель инструментов в макет действия: ResultActivity, используя элемент «include». Вы также можете добавить панель инструментов в макет непосредственно