Zugriff auf Ressourcen in einem Layout in einem PopupWindow, Objekte sind Null referenziert

Question

Ich habe eine Android-Anwendung, wenn auf eine Option von einer Seitenleiste angeklickt wird, geht es zu einem Fragment und dann in ein anderes Fragment, das anklickbare Optionsfelder hat. Wenn Sie darauf klicken, wird ein Popup-Fenster mit einigen Textfeldern erstellt.

Im Grunde ist dies, wie der Fluss geht,

Aktivität -> Fragment 1 -> Fragment 2 -> PopupWindow

Wenn ich versuche, die Ressourcen in diesem popupWindow zuzugreifen, in Beispiel :

damageComponenetAutoCompleteTextview = (AutoCompleteTextView) findViewById(R.id.popup_damage_component_item); 
damageComponenetAutoCompleteTextview.requestFocus(); 

in der Linie damageComponenetAutoCompleteTextview.requestFocus(); es mir einen Fehler gibt,

Versuch virtuelle Methode auf ein Null-Objekt Referenz

ich es beziehe ich mich auf eine falsche Ansicht aufgrund glauben aufzurufen, wenn die Ressourcen aufrufen. Hoffe, jemand könnte mich darauf hinweisen, was ich falsch mache. Danke im Voraus.

Dies ist die Methode, die ich verwende, um das PopupWindow zu erstellen.

public void showDamagedItemEntryPopup(RadioButton radioButton, View view){ 

    LayoutInflater layoutInflater = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); 

    ViewGroup viewG = ((ViewGroup)view.findViewById(R.id.damaged_comp_popup)); 

    //I tried passing the root view to inflate() method instead of passing it null. Didn't work. 
    //View popupView = layoutInflater.inflate(R.layout.component_selection_popup, null); 

    View popupView = layoutInflater.inflate(R.layout.component_selection_popup, null); 

    final PopupWindow popupWindow = new PopupWindow(
      popupView, 
      ViewGroup.LayoutParams.WRAP_CONTENT, 
      ViewGroup.LayoutParams.WRAP_CONTENT); 

    popupWindow.setAnimationStyle(R.style.popupAnimation); 

    //I tried setting the content view manually but didnt work   
    //popupWindow.setContentView(view.findViewById(R.id.damaged_comp_popup)); 

    Button buttonClose = (Button)popupView.findViewById(R.id.close_add_component_btn); 

    // Close button damaged item popop window 
    buttonClose.setOnClickListener(new Button.OnClickListener(){ 

     @Override 
     public void onClick(View v) { 
      popupWindow.dismiss(); 
     } 
    }); 


    originalAmount = (EditText)this.findViewById(R.id.popup_add_component_original_amount); 
    customerContribution = (EditText)this.findViewById(R.id.popup_percentage); 
    quantity = (EditText)this.findViewById(R.id.popup_quantity); 
    finalAmount = (EditText)this.findViewById(R.id.popup_add_component_final_amount); 
    remarks = (EditText)this.findViewById(R.id.popup_add_component_remarks); 

    // Item Spinner 
    itemSpinnerArray = new ArrayList<String>(); 
    itemSpinnerArray.add("Select Item"); 

    // Status Spinner 
    ArrayList<String> statusSpinnerArray = new ArrayList<String>(); 
    statusSpinnerArray.add("MR"); 
    statusSpinnerArray.add("DR"); 
    statusSpinnerArray.add("SP"); 

    // Error comes at this point initially. When these Resource access line codes are commented, the popup works fine. 

    damageComponenetAutoCompleteTextview = (AutoCompleteTextView) findViewById(R.id.popup_damage_component_item); 
    damageComponenetAutoCompleteTextview.requestFocus(); 
    ArrayAdapter<String> itemSpinnerArrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, itemSpinnerArray); 
    damageComponenetAutoCompleteTextview.setThreshold(1); 
    damageComponenetAutoCompleteTextview.setAdapter(itemSpinnerArrayAdapter); 

    damageComponenetAutoCompleteTextview.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
     @Override 
     public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
      //int index = cityNames.indexOf(actvCity.getText().toString()); 
      itemSpinnerValue = (String) parent.getItemAtPosition(position); 
      Log.d("SK-->", "----------------------------------------------------------"); 
      Log.d("SK-->","itemSpinnerValue: " + itemSpinnerValue); 
     } 
    }); 

    statusSpinner = (Spinner)this.findViewById(R.id.popup_status_spinner); 
    ArrayAdapter<String> statusSpinnerArrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, statusSpinnerArray); 
    statusSpinner.setAdapter(statusSpinnerArrayAdapter); 

    //Creating a text Watcher 
    TextWatcher textWatcher = new TextWatcher() { 

     @Override 
     public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) { 

     } 

     @Override 
     public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) { 

     } 

     @Override 
     public void afterTextChanged(Editable editable) { 
      //here, after we introduced something in the EditText we get the string from it 
      //String answerString = originalAmount.getText().toString(); 

      if (originalAmount.getText().toString().trim().equals("") || customerContribution.getText().toString().trim().equals("") 
        || quantity.getText().toString().trim().equals("")) { 

       // Error , one or more editText are empty 

      } 
      else 
      { 
       calculateFinalAmount(); 
      } 

      //and now we make a Toast 
      //modify "yourActivity.this" with your activity name .this 
      //Toast.makeText(yourActivity.this,"The string from EditText is: "+answerString,0).show(); 

     } 
    }; 

    // Adding Text Watcher to our text boxes 
    originalAmount.addTextChangedListener(textWatcher); 
    customerContribution.addTextChangedListener(textWatcher); 
    quantity.addTextChangedListener(textWatcher); 

    // Show the popup 
    popupWindow.showAtLocation(view, Gravity.CENTER, 0, 0); 

} 

Dies ist die XML, die ich für das Popup verwende.

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:id="@+id/damaged_comp_popup" 
android:orientation="vertical" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:background="@color/popup_wire"> 

<LinearLayout 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:orientation="vertical" 
    android:layout_margin="2dp" 
    android:background="@color/popup_background"> 

    <RelativeLayout 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:orientation="vertical"> 

     <AutoCompleteTextView 
      android:id="@+id/popup_damage_component_item" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:layout_centerHorizontal="true" 
      android:layout_alignParentTop="true" 
      android:layout_alignParentLeft="true" 
      android:layout_alignParentRight="true" 
      android:layout_marginLeft="10dp" 
      android:layout_marginRight="10dp" 
      android:layout_marginTop="20dp" 
      android:layout_marginBottom="5dp" 
      android:hint="@string/damaged_componenet_item_string"/> 

     <Spinner 
      android:id="@+id/popup_status_spinner" 
      android:layout_width="122dp" 
      android:layout_height="wrap_content" 
      android:layout_alignParentLeft="true" 
      android:layout_below="@+id/popup_damage_component_item" 
      android:layout_marginLeft="10dp" 
      android:layout_marginTop="0dp" 
      android:layout_marginBottom="5dp" 
      android:layout_marginRight="5dp" /> 

     <EditText 
      android:id="@+id/popup_add_component_original_amount" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/popup_damage_component_item" 
      android:layout_alignParentRight="true" 
      android:layout_marginBottom="5dp" 
      android:layout_marginLeft="5dp" 
      android:layout_marginRight="10dp" 
      android:layout_marginTop="22dp" 
      android:layout_toRightOf="@+id/popup_status_spinner" 
      android:ems="10" 
      android:hint="@string/original_amount_string" 
      android:inputType="number" /> 

     <EditText 
      android:id="@+id/popup_percentage" 
      android:layout_width="52dp" 
      android:layout_height="wrap_content" 
      android:layout_alignParentLeft="true" 
      android:layout_below="@+id/popup_status_spinner" 
      android:layout_marginBottom="5dp" 
      android:layout_marginLeft="10dp" 
      android:layout_marginRight="2dp" 
      android:layout_marginTop="22dp" 
      android:ems="10" 
      android:hint="@string/percentage_string" 
      android:inputType="number" /> 

     <TextView 
      android:id="@+id/popup_percentageMark" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignBottom="@+id/popup_percentage" 
      android:layout_toRightOf="@+id/popup_percentage" 
      android:text="@string/percentage_string" 
      android:textAppearance="?android:attr/textAppearanceMedium" 
      android:layout_marginLeft="1dp" 
      android:layout_marginRight="0dp" 
      android:layout_marginTop="5dp" 
      android:layout_marginBottom="5dp" /> 

     <EditText 
      android:id="@+id/popup_quantity" 
      android:layout_width="46dp" 
      android:layout_height="wrap_content" 
      android:layout_alignBaseline="@+id/popup_percentage" 
      android:layout_alignBottom="@+id/popup_percentage" 
      android:layout_marginBottom="5dp" 
      android:layout_marginLeft="5dp" 
      android:layout_marginRight="6dp" 
      android:layout_marginTop="5dp" 
      android:layout_toRightOf="@+id/popup_percentageMark" 
      android:ems="10" 
      android:hint="@string/quantity_string" 
      android:inputType="number" /> 

     <EditText 
      android:id="@+id/popup_add_component_final_amount" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignBaseline="@+id/popup_quantity" 
      android:layout_alignBottom="@+id/popup_quantity" 
      android:layout_marginBottom="5dp" 
      android:layout_marginLeft="5dp" 
      android:layout_marginRight="10dp" 
      android:layout_alignParentRight="true" 
      android:layout_marginTop="5dp" 
      android:layout_toRightOf="@+id/popup_quantity" 
      android:ems="10" 
      android:hint="@string/final_amount_string" 
      android:inputType="number" /> 

     <EditText 
      android:id="@+id/popup_add_component_remarks" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignParentLeft="true" 
      android:layout_alignParentRight="true" 
      android:layout_below="@+id/popup_percentage" 
      android:layout_marginBottom="10dp" 
      android:layout_marginLeft="10dp" 
      android:layout_marginRight="10dp" 
      android:layout_marginTop="22dp" 
      android:ems="10" 
      android:hint="@string/remarks_string" 
      android:inputType="text|textMultiLine" /> 

     <Button 
      android:id="@+id/add_component_btn" 
      android:layout_width="50dp" 
      android:layout_height="wrap_content" 
      android:layout_marginLeft="200dp" 
      android:layout_below="@+id/popup_add_component_remarks" 
      android:background="@drawable/correct" 
      android:layout_marginBottom="15dp" 
      android:onClick="onSaveItem"/> 

     <Button 
      android:id="@+id/close_add_component_btn" 
      android:layout_width="50dp" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/popup_add_component_remarks" 
      android:layout_toRightOf="@+id/add_component_btn" 
      android:layout_marginLeft="10dp" 
      android:background="@drawable/cancel"/> 

    </RelativeLayout> 

</LinearLayout> 

Answer 1

Es scheint, Ihr damageComponenetAutoCompleteTextview zum popupWindow gehört, die Sie oben aufgeblasen. So

versuchen auch

damageComponenetAutoCompleteTextview = (AutoCompleteTextView) findViewById(R.id.popup_damage_component_item); 

Um

damageComponenetAutoCompleteTextview = (AutoCompleteTextView) popupView.findViewById(R.id.popup_damage_component_item); 

und andere relevante Aspekte zu ändern.