Integer-Wert wird nicht in Preference XML gespeichert, der Wert wird nicht angezeigt

Question

Ich entwickle gerade eine Kalorie-App für mein Klassenprojekt. Ich habe Probleme, den Wert von der Profilfunktion calculateTDEE zu der gemeinsamen Präferenz XML zu speichern. Die Seite, an der ich gerade arbeite, erhält Informationen vom Benutzer und je nachdem, was der Benutzer auswählt, werden seine Kalorien bestimmt. Dieser Wert wird dann in der gemeinsamen Einstellung gespeichert, in der er in der Hauptaktivität angezeigt wird.

Ich lerne immer noch Android Studio und das ist meine erste App, die ich entwickle.

Vielen Dank im Voraus.

Profil Java-Datei

`public class Profile extends Fragment implements View.OnClickListener { 

    //adaptors spinners 

    ArrayAdapter<String> HeightFeetAdapter; 
    ArrayAdapter<String> WeightLBSAdapter; 


    //references UI elements 
    Button SaveButton; 

    Spinner weightSpinner; 
    Spinner heightSpinner; 
    Spinner goal; 
    Spinner gender; 
    Spinner activityLevel; 

    EditText age; 
    private Animation anim; 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    // Inflate the layout for this fragment 


     View myView = inflater.inflate(R.layout.fragment_profile, container, 
     false); 

     String username = 
     getActivity().getIntent().getStringExtra("Username"); 

     TextView userMain = (TextView) myView.findViewById(R.id.User); 
     userMain.setText(username); 

     age =(EditText)myView.findViewById(R.id.editText3); 
     age.setInputType(InputType.TYPE_CLASS_NUMBER); 

     heightSpinner = (Spinner) myView.findViewById(R.id.HeightSpin); 

     weightSpinner = (Spinner) myView.findViewById(R.id.WeightSpin); 

     activityLevel = (Spinner) myView.findViewById(R.id.activity_level); 
     ArrayAdapter<CharSequence> adapter_activity = 
     ArrayAdapter.createFromResource(getActivity(), 
      R.array.activity_level, android.R.layout.simple_spinner_item); 
      adapter_activity.setDropDownViewResource 
     (android.R.layout.simple_spinner_dropdow 
    n_item); 
    activityLevel.setAdapter(adapter_activity); 

    goal = (Spinner) myView.findViewById(R.id.goal); 
    ArrayAdapter<CharSequence> adapter_goal = 
    ArrayAdapter.createFromResource(getActivity(), 
      R.array.goal, android.R.layout.simple_spinner_item); 
     adapter_goal.setDropDownViewResource 
     (android.R.layout.simple_spinner_dropdown_item); 
     goal.setAdapter(adapter_goal); 

    gender = (Spinner) myView.findViewById(R.id.gender); 
     ArrayAdapter<CharSequence> adapter_gender = 
    ArrayAdapter.createFromResource(getActivity(), 
      R.array.gender, android.R.layout.simple_spinner_item); 

     adapter_gender.setDropDownViewResource 
    (android.R.layout.simple_list_item_activated_1); 
    gender.setAdapter(adapter_gender); 


    SaveButton = (Button) myView.findViewById(R.id.savebutton); 
    SaveButton.setOnClickListener(this); 


    initializeSpinnerAdapters(); 
    loadLBVal(); 
    loadFTVal(); 

    anim = AnimationUtils.loadAnimation(getActivity(), R.anim.fading); 
    heightSpinner.startAnimation(anim); 

    anim = AnimationUtils.loadAnimation(getActivity(), R.anim.fading); 
    weightSpinner.startAnimation(anim); 


    anim = AnimationUtils.loadAnimation(getActivity(), R.anim.fading); 
    SaveButton.startAnimation(anim); 

    SharedPreferences userInfo = 
    PreferenceManager.getDefaultSharedPreferences(getActivity()); 
    PreferenceManager.setDefaultValues(getActivity(), 
    R.xml.activity_preference, false); 



    return myView; 
} 






    public void loadLBVal() { 
    weightSpinner.setAdapter(WeightLBSAdapter); 
    // set the default lib value 
    weightSpinner.setSelection(WeightLBSAdapter.getPosition("170")); 
    } 


// load the feets value range to the height spinner 
public void loadFTVal() { 
    heightSpinner.setAdapter(HeightFeetAdapter); 
    // set the default value to feets 
    heightSpinner.setSelection(HeightFeetAdapter.getPosition("5\"05'")); 
    } 


    public void initializeSpinnerAdapters() { 

    String[] weightLibs = new String[300]; 
    // loading spinner values for weight 
    int k = 299; 
    for (int i = 1; i <= 300; i++) { 
     weightLibs[k--] = String.format("%3d", i); 
    } 
    // initialize the weightLibsAdapter with the weightLibs values 
    WeightLBSAdapter = new ArrayAdapter<String>(getContext(), 
    R.layout.activity_spinner_item, weightLibs); 

    WeightLBSAdapter.setDropDownViewResource 
    (android.R.layout.simple_spinner_dropdown_item); 


    String[] heightFeets = new String[60]; 
    // loading values 3"0' to 7"11' to the height in feet/inch 
    k = 59; 
    for (int i = 3; i < 8; i++) { 
     for (int j = 0; j < 12; j++) { 
      heightFeets[k--] = i + "\"" + String.format("%02d", j) + "'"; 
     } 
    } 
    // initialize the heightFeetAdapter with the heightFeets values 

    HeightFeetAdapter = new ArrayAdapter<String>(getContext(), 

    R.layout.activity_spinner_item, heightFeets); 

    HeightFeetAdapter.setDropDownViewResource 
    (android.R.layout.simple_spinner_dropdown_item); 


    } 



    @Override 
    public void onClick(View v) { 

    switch (v.getId()) { 

     case R.id.savebutton: 


      int activityLevel, goal, gender, age; 
      // Get preferences 
      float height = getSelectedHeight(); 
      float weight = getSelectedWeight(); 


      activityLevel = 
    ((Spinner)getActivity().findViewById 
    (R.id.activity_level)).getSelectedItemPosition(); 


      goal = ((Spinner)getActivity(). 
     findViewById(R.id.goal)).getSelectedItemPosition(); 

      gender= ((Spinner)getActivity(). 
     findViewById(R.id.gender)).getSelectedItemPosition(); 


      age = Integer.parseInt(((EditText). 
      getActivity().findViewById(R.id.editText3))); 




      int tdee = calculateTDEE(height,weight,activityLevel,age,gender, 
      goal); 

      // Save preferences in XML 
      SharedPreferences userInfo = getSharedPreferences("userInfo", 
      0); 
      SharedPreferences.Editor editor = userInfo.edit(); 
      editor.putInt("tdee", tdee); 
      editor.commit(); 


      break; 
    } 
    } 


public float getSelectedWeight() { 
    String selectedWeightValue = (String)weightSpinner.getSelectedItem(); 

    return (float) (Float.parseFloat(selectedWeightValue) * 0.45359237); 


} 



public float getSelectedHeight() { 
    String selectedHeightValue = (String)heightSpinner.getSelectedItem(); 

    // the position is feets and inches, so convert to meters and return 
    String feets = selectedHeightValue.substring(0, 1); 
    String inches = selectedHeightValue.substring(2, 4); 
    return (float) (Float.parseFloat(feets) * 0.3048) + 
      (float) (Float.parseFloat(inches) * 0.0254); 

} 



    public int calculateTDEE(float height, float weight, int activityLevel, 
    int 
age, int gender, int goal) { 

    double bmr = (10 * weight) + (6.25 * height) - (5 * age) + 5; 
    if(gender == 1) { 
     bmr = (10* weight) + (6.25 * height) - (5*age) - 161; 
    } 
    double activity = 1.25; 
    switch(activityLevel) { 
     case 1: 
      activity = 1.375; 
      break; 
     case 2: 
      activity = 1.55; 
      break; 
     case 3: 
      activity = 1.725; 
      break; 
     case 4: 
      activity = 1.9; 
      break; 
    } 
    double tdee = bmr * activity; 
    switch(goal) { 
     case 0: 
      tdee -=500; 
      break; 
     case 2: 
      tdee +=500; 
      break; 
    } 
    tdee += .5; 
    return (int) tdee; 
    } 
















    @Override 
    public void onActivityCreated(Bundle savedInstanceState) { 
    super.onActivityCreated(savedInstanceState); 

    } 


    @Override 
    public void onDestroy() { 
     super.onDestroy(); 

    } 

    @Override 
    public void onDetach() { 
     super.onDetach(); 
    } 

} 

`

fragment_profile xml

`

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 

    android:orientation="vertical" 

    android:background="@drawable/imgbackground2" 
    android:weightSum="1"> 
    <TextView 
     android:layout_width="180dp" 
     android:layout_height="wrap_content" 
     android:textAppearance="?android:attr/textAppearanceLarge" 
     android:text="@string/emptyString" 
     android:id="@+id/User" 
     android:layout_marginLeft="0dp" 
     android:layout_marginRight="0dp" 
     android:layout_alignParentTop="true" 
     android:layout_alignEnd="@+id/tv_main_title" /> 
    <TextView 
     android:layout_width="294dp" 
     android:layout_height="65dp" 
     android:text="Please Complete Information" 
     android:textColor="@color/colorBackground" 
     android:layout_gravity="center_horizontal" 
     android:gravity="center" 
     android:textSize="20dp" /> 
    <TableLayout 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content"> 

    <TableRow 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

    <TextView 
     android:layout_width="60dp" 
     android:layout_height="wrap_content" 
     android:textAppearance="?android:attr/textAppearanceLarge" 
     android:text="Age" 
     android:id="@+id/textView12" 
     android:layout_above="@+id/gender" 
     android:layout_alignLeft="@+id/textView5" 
     android:layout_alignStart="@+id/textView5" /> 

    <EditText 
     android:layout_width="50dp" 
     android:layout_height="50dp" 
     android:inputType="number" 
     android:ems="10" 
     android:id="@+id/editText3" 
     android:imeOptions="actionDone" 
     android:layout_alignTop="@+id/gender" 
     android:layout_alignLeft="@+id/editText" 
     android:layout_marginLeft="0dp" 
     android:layout_column="1" /> 
</TableRow> 

</TableLayout> 


    <RelativeLayout 
     android:layout_width="194dp" 
     android:layout_height="26dp"></RelativeLayout> 


    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:textAppearance="?android:attr/textAppearanceLarge" 
     android:text="Gender" 
     android:id="@+id/textView11" 
     /> 

    <Spinner 
     android:layout_width="113dp" 
     android:layout_height="40dp" 
     android:id="@+id/gender" 
     android:layout_above="@+id/textView5" 
     android:layout_marginTop="10dp" 
     android:layout_marginBottom="10dp" 
     android:layout_alignStart="@+id/textView4" 
     android:layout_alignEnd="@+id/textView3" 
     android:spinnerMode="dropdown" 
     android:popupBackground="@color/colorBackground" /> 

    <TableLayout 
     android:id="@+id/tableLayout1" 
     android:layout_width="329dp" 
     android:layout_height="wrap_content" 
     android:orientation="horizontal"> 

     <TableRow 
      android:id="@+id/tableRow1" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_marginLeft="5dp" 
      android:layout_marginRight="5dp" 
      android:layout_marginTop="15dp" > 

      <TextView 
       android:id="@+id/textView1" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:layout_marginRight="5dp" 
       android:text="@string/weightLabel" 
       android:textAppearance="?android:attr/textAppearanceLarge" 
       android:textColor="@color/colorBackground" 
       android:textSize="25dp" 
       android:paddingRight="0dp" 
       android:paddingLeft="-2dp" /> 

      <Spinner 
       android:id="@+id/WeightSpin" 
       android:layout_width="fill_parent" 
       android:layout_height="match_parent" 
       android:prompt="@string/weightLabel" 
       android:spinnerMode="dropdown" 
       android:layout_weight="2" 
       android:textAlignment="center" 
       android:popupBackground="@drawable/graybackground2" 

       android:layout_span="2" 
       android:layout_column="1" /> 

     </TableRow> 

     <TableRow 
      android:id="@+id/tableRow2" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_marginLeft="5dp" 
      android:layout_marginRight="5dp" 
      android:layout_marginTop="15dp" > 

     </TableRow> 



     <TableRow 
      android:layout_width="match_parent" 
      android:layout_height="match_parent"> 

      <TextView 
       android:id="@+id/textView2" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:layout_marginRight="5dp" 
       android:text="@string/heightLabel" 
       android:textAppearance="?android:attr/textAppearanceMedium" 
       android:textColor="@color/colorBackground" 
       android:textSize="25dp" 
       android:layout_column="0" 
       android:layout_marginLeft="5dp" /> 

      <Spinner 
       android:id="@+id/HeightSpin" 
       android:layout_width="fill_parent" 
       android:layout_height="match_parent" 
       android:prompt="@string/heightLabel" 
       android:layout_weight="2" 
       android:popupBackground="@drawable/graybackground2" 

       android:spinnerMode="dropdown" 
       android:layout_marginTop="0dp" 
       android:layout_margin="0dp" 
       android:layout_marginBottom="0dp" 
       android:layout_column="1" 
       android:paddingTop="0dp" 
       android:paddingBottom="0dp" 
       android:textAlignment="center" 
       android:paddingStart="5dp" 
       android:layout_marginLeft="0dp" 
       android:layout_span="0" 
       android:layout_marginRight="0dp" /> 


     </TableRow> 

     <TableRow> 

      <TextView 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:textAppearance="?android:attr/textAppearanceLarge" 
       android:text="Activity Level" 
       android:id="@+id/textView7" 
       android:layout_below="@+id/editText" 
       android:layout_centerHorizontal="true" 
       android:layout_marginTop="10dp" /> 

      <Spinner 
       android:layout_width="200dp" 
       android:layout_height="50dp" 
       android:id="@+id/activity_level" 
       android:layout_below="@+id/textView7" 
       android:layout_centerHorizontal="true" 
       android:layout_marginTop="5dp" /> 

     </TableRow> 

     <TableRow> 
      <TextView 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:textAppearance="?android:attr/textAppearanceLarge" 
       android:text="Goal" 
       android:id="@+id/textView8" 
       android:layout_below="@+id/activity_level" 
       android:layout_centerHorizontal="true" 
       android:layout_marginTop="10dp" /> 

      <Spinner 
       android:layout_width="200dp" 
       android:layout_height="50dp" 
       android:id="@+id/goal" 
       android:layout_below="@+id/textView8" 
       android:layout_centerHorizontal="true" 
       android:layout_marginTop="5dp" 
       android:spinnerMode="dropdown" /> 
     </TableRow> 
    </TableLayout> 

    <Button 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Save" 
     android:id="@+id/savebutton" 
     android:radius="10dp" 
     android:textColor="@color/colorBackground" 
     android:onClick="saveAction" 
     android:layout_alignParentBottom="true" 
     android:layout_toEndOf="@+id/editText3" 
     android:layout_gravity="right" /> 


</LinearLayout> 

`

Fragment home.java

import java.util.ArrayList; 



    public class FragmentHome extends Fragment implements 
    View.OnClickListener { 


    private TextView caloriesTotal; 

    private TextView caloriesRemain; 

    private ListView listView; 
    private LinearLayout mLayout; 

    private Animation anim; 

    ImageButton AddEntrybtn; 
    ImageButton ResetEntry; 
    Context context; 

    int goalCalories; 
    int totalCalorie; 



    Button mButton; 

    //Database 
    private DatabaseHandler dba; 

    private ArrayList<Food> dbFoods = new ArrayList<>(); 
    private CustomListViewAdapter foodAdapter; 
    private Food myFood ; 



    //fragment 
    private android.support.v4.app.FragmentManager fragmentManager; 
    private FragmentTransaction fragmentTransaction; 

    public FragmentHome() { 
     // Required empty public constructor 
    } 




    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 

    View myView = inflater.inflate(R.layout.fragment_home, container, 
    false); 



    caloriesTotal = (TextView) myView.findViewById(R.id.tv_calorie_amount); 

    caloriesRemain = (TextView) myView.findViewById(R.id.calorieRemain); 

    listView = (ListView) myView.findViewById(R.id.ListId); 




    SharedPreferences prefs = 
    PreferenceManager.getDefaultSharedPreferences(getActivity()); 
    PreferenceManager.setDefaultValues(getActivity(), 
    R.xml.activity_preference, false); 

    goalCalories = 
    Integer.parseInt(prefs.getString("prefs_key_daily_calorie_amount", 
    "2000")); 



    AddEntrybtn = (ImageButton) myView.findViewById(R.id.AddItems); 




    AddEntrybtn.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View arg0) { 


      ((appMain) getActivity()).loadSelection(4); 


     } 
    }); 



    ResetEntry = (ImageButton) myView.findViewById(R.id.ResetEntry); 
    ResetEntry.setOnClickListener(this); 







    refreshData(); 



    anim= AnimationUtils.loadAnimation(getActivity(), R.anim.fading); 
    listView.startAnimation(anim); 

    return myView; 


    } 




    public void reset() { 

    // 


    dbFoods.clear(); 

    dba = new DatabaseHandler(getActivity()); 

    ArrayList<Food> foodsFromDB = dba.getFoods(); 


    //Loop 
    for (int i = 0; i < foodsFromDB.size(); i ++){ 

     String name = foodsFromDB.get(i).getFoodName(); 
     String date = foodsFromDB.get(i).getRecordDate(); 
     int cal = foodsFromDB.get(i).getCalories(); 
     int foodId = foodsFromDB.get(i).getFoodId(); 

     Log.v("Food Id", String.valueOf(foodId)); 

     myFood= new Food(); 
     myFood.setFoodId(foodId); 
     myFood.setFoodName(name); 
     myFood.setCalories(cal); 
     myFood.setRecordDate(date); 

     dbFoods.clear(); 

     dbFoods.remove(myFood); 
     foodsFromDB.remove(myFood); 
     dba.deleteFood(foodId); 
    } 
    dba.close(); 

    //setting food Adapter: 
    foodAdapter = new CustomListViewAdapter(getActivity(), 
    R.layout.row_item,dbFoods); 
    listView.setAdapter(foodAdapter); 
    foodAdapter.notifyDataSetChanged(); 



    anim= AnimationUtils.loadAnimation(getActivity(), R.anim.fading); 
    listView.startAnimation(anim); 


    } 



    public void refreshData(){ 




    dbFoods.clear(); 

    dba = new DatabaseHandler(getActivity()); 

    ArrayList<Food> foodsFromDB = dba.getFoods(); 

    totalCalorie = dba.totalCalories(); 




    String formattedCalories = Utils.formatNumber(totalCalorie); 
    String formattedRemain = Utils.formatNumber(goalCalories - 
    totalCalorie); 


    //setting the editTexts: 


    caloriesTotal.setText("Total Calories: " + formattedCalories); 

    caloriesRemain.setText(formattedRemain); 




    SharedPreferences prefs = 
    PreferenceManager.getDefaultSharedPreferences(getContext()); 
    PreferenceManager.setDefaultValues(getActivity(), 
    R.xml.activity_preference, false); 




    goalCalories = 
    Integer.parseInt(prefs.getString("prefs_key_daily_calorie_amount", 
    "2000")); 




    //Loop 
    for (int i = 0; i < foodsFromDB.size(); i ++){ 

     String name = foodsFromDB.get(i).getFoodName(); 
     String date = foodsFromDB.get(i).getRecordDate(); 
     int cal = foodsFromDB.get(i).getCalories(); 
     int foodId = foodsFromDB.get(i).getFoodId(); 

     Log.v("Food Id", String.valueOf(foodId)); 

     myFood= new Food(); 
     myFood.setFoodId(foodId); 
     myFood.setFoodName(name); 
     myFood.setCalories(cal); 
     myFood.setRecordDate(date); 

     dbFoods.add(myFood); 
    } 
    dba.close(); 

    //setting food Adapter: 
    foodAdapter = new CustomListViewAdapter(getActivity(), 
    R.layout.row_item,dbFoods); 
    listView.setAdapter(foodAdapter); 
    foodAdapter.notifyDataSetChanged(); 

    anim= AnimationUtils.loadAnimation(getActivity(), R.anim.fading); 
    listView.startAnimation(anim); 

} 


    //save prefs 
    public void savePrefs(String key, int value) { 

    SharedPreferences sharedPreferences = 
    PreferenceManager.getDefaultSharedPreferences(getContext()); 
    SharedPreferences.Editor editor = sharedPreferences.edit(); 
    editor.putInt(key, value); 
    editor.apply(); 
    } 
    //get prefs 
    public int loadPrefs(String key, int value) { 
    SharedPreferences sharedPreferences = 
    PreferenceManager.getDefaultSharedPreferences(getContext()); 
    return sharedPreferences.getInt(key, value); 
    } 




@Override 
    public void onActivityCreated(Bundle savedInstanceState) { 
    super.onActivityCreated(savedInstanceState); 

    Bundle username = getActivity().getIntent().getExtras(); 



    String username1 = username.getString("Username"); 

    TextView userMain= (TextView) getView().findViewById(R.id.User); 

    userMain.setText(username1); 




    } 


    @Override 
    public void onResume() { 
    super.onResume(); 



} 

@Override 
public void onDestroy() { 
    super.onDestroy(); 

} 

    @Override 
    public void onDetach() { 
    super.onDetach(); 

    startActivity(new Intent(getContext(),MainActivity.class)); 
    } 


    @Override 
    public void onClick(View v) { 
     switch (v.getId()) { 
     case R.id.AddItems: 

      AddEntry addEntry = new AddEntry(); 

      fragmentTransaction = fragmentManager.beginTransaction(); 
      fragmentTransaction.addToBackStack(null); 
      fragmentTransaction.replace(R.id.FragmentHolder,addEntry) 

        .commit(); 


      break; 

     case R.id.action_settings: 

      Intent preferenceScreenIntent = new Intent(getContext(), 
      PreferenceScreenActivity.class); 
      startActivity(preferenceScreenIntent); 



      break; 


     case R.id.ResetEntry: 


      reset(); 
      anim= AnimationUtils.loadAnimation(getActivity(), 
      R.anim.fading); 
      listView.startAnimation(anim); 
      break; 


     } 


    } 
} 

preference.xml

<PreferenceScreen  
    xmlns:android="http://schemas.android.com/apk/res/android"> 

    <PreferenceCategory android:title="User Settings"> 
    <EditTextPreference 
    android:title="Daily Calorie Amount" 
    android:inputType="number" 
    android:defaultValue="2000" 
    android:key="@string/prefs_key_daily_calorie_amount" 
    android:summary="@string/prefs_description_daily_calorie_amount" /> 




    </PreferenceCategory> 



    </PreferenceScreen> 

Answer 1

ok, so haben Sie Linien

SharedPreferences userInfo = getSharedPreferences("userInfo", 0); 
SharedPreferences.Editor editor = userInfo.edit(); 
editor.putInt("tdee", tdee); 
editor.commit(); 

, die Ihren Wert in SharedPreferences werden zu speichern. Wo hast du diesen Wert? (Smth wie unten)

int tdee = getSharedPreferences("userInfo", 0).getInt("tdee"); 

warum Sie sagen, dass int nicht gespeichert? meiner Meinung nach ist perfekt gespeichert und Sie versuchen nicht, es z. onCreate überhaupt (auf gepostet Code basieren)

auch: versuchen, Ihren Code zu löschen, bevor Frage Posting/Antwort, Streifencode von unnötigen und nicht im Zusammenhang mit Problemlinien