I have integarted with Mopub for displaying ads in my android application. I am able to display bannner and interstitial ads but not native ads,
layout file code,
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="vertical"  >
  <TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="@string/note_title_label"
    style="?android:listSeparatorTextViewStyle"
    />
  <EditText android:id="@+id/note_title"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="@string/note_title_hint"
    />
    <TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="@string/note_details_label"
    style="?android:listSeparatorTextViewStyle"
    />
    <EditText android:id="@+id/note_details"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="@string/note_details_hint"
    />
    <Button android:id="@+id/note_date"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginLeft="16dp"
    android:layout_marginRight="16dp"
    />
    <CheckBox android:id="@+id/note_solved"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginLeft="16dp"
    android:layout_marginRight="16dp"
    android:text="@string/note_solved_label"
    />
    <RelativeLayout  android:id="@+id/native_ad_layout"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="50dp">
    >    
    <ImageView android:id="@+id/native_ad_main_image"
                    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
        />  
    <ImageView android:id="@+id/native_ad_icon_image"
                    android:layout_width="fill_parent"
    android:layout_height="wrap_content"  
         />  
    <TextView android:id="@+id/native_ad_title" 
            android:layout_width="fill_parent"
    android:layout_height="wrap_content"
        />  
    <TextView android:id="@+id/native_ad_text" 
       android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        />
</RelativeLayout>
</LinearLayout>
Logic in fragment.java(associated with above layout) file for displaying native ads,
    @TargetApi(11)
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup parent,
    Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.fragment_note, parent, false);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
        if (NavUtils.getParentActivityName(getActivity()) != null) {
        getActivity().getActionBar().setDisplayHomeAsUpEnabled(true);
        }
    }
    mTitleField = (EditText)v.findViewById(R.id.note_title);
    mTitleField.setText(mNote.getTitle());
    mTitleField.addTextChangedListener(new TextWatcher() {
    public void onTextChanged(CharSequence c, int start, int before, int count) 
    { 
    String title=Character.toUpperCase(c.toString().charAt(0)) + c.toString().substring(1);
    mNote.setTitle(title);
    }
    public void beforeTextChanged(
    CharSequence c, int start, int count, int after) 
    {// This space intentionally left blank
    }
    public void afterTextChanged(Editable c) {
    // This one too
    }
    });
    mDetailsField = (EditText)v.findViewById(R.id.note_details);
    mDetailsField.setText(mNote.getDetails());
    mDetailsField.addTextChangedListener(new TextWatcher() {
    public void onTextChanged(
    CharSequence c, int start, int before, int count) 
    { 
    mNote.setDetails(c.toString());
    }
    public void beforeTextChanged(
    CharSequence c, int start, int count, int after) 
    {// This space intentionally left blank
    }
    public void afterTextChanged(Editable c) {
    // This one too
    }
    });
    mDateButton = (Button)v.findViewById(R.id.note_date);
    mDateButton.setText(mNote.getDate().toString());
    //mDateButton.setEnabled(false);
    mDateButton.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
        FragmentManager fm = getActivity()
        .getSupportFragmentManager();
        //DatePickerFragment dialog = new DatePickerFragment();
        DatePickerFragment dialog = DatePickerFragment
                .newInstance(mNote.getDate());
        dialog.setTargetFragment(NoteFragment.this, REQUEST_DATE);
        dialog.show(fm, DIALOG_DATE);
        }
        });
    mSolvedCheckBox = (CheckBox)v.findViewById(R.id.note_solved);
    mSolvedCheckBox.setChecked(mNote.isSolved());
    mSolvedCheckBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            // set the note's solved property
            mNote.setSolved(isChecked);
        }
    });  
/*    Button reportButton = (Button)v.findViewById(R.id.note_reportButton);
    reportButton.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v) {
    Intent i = new Intent(Intent.ACTION_SEND);
    i.setType("vnd.android-dir/mms-sms");
    i.putExtra(Intent.EXTRA_TEXT, getNoteReport());
    i.putExtra(Intent.EXTRA_SUBJECT,
            mNote.getTitle());
    Intent sendIntent = new Intent(Intent.ACTION_VIEW);         
    sendIntent.setData(Uri.parse("sms:"));
    sendIntent.putExtra("sms_body", "test man text");
    startActivity(sendIntent);
    }
    });*/
    //advertising start
    MoPubNative.MoPubNativeListener moPubNativeListener = new MoPubNative.MoPubNativeListener() {
        @Override
        public void onNativeLoad(NativeResponse nativeResponse) {
            // ...
        }
        @Override
        public void onNativeFail(NativeErrorCode errorCode) {
            // ...
        }
        @Override
        public void onNativeImpression(View view) {
            // ...
        }
        @Override
        public void onNativeClick(View view) {
            // ...
        };
    };
    MoPubNative moPubNative = new MoPubNative(this.getActivity().getApplicationContext(), "248504aaf06d4a759a59d0615a5bdb54", moPubNativeListener);
    Location exampleLocation = new Location("com.genedevelopers.android.yournote");
    exampleLocation.setLatitude(23.1);
    exampleLocation.setLongitude(42.1);
    exampleLocation.setAccuracy(100);
    RequestParameters requestParameters = new RequestParameters.Builder()
            .keywords("gender:m,age:27")
            .location(exampleLocation)
            .build();
    moPubNative.makeRequest(requestParameters);
    ViewBinder viewBinder = new ViewBinder.Builder(R.layout.list_item_note)
    .mainImageId(R.id.native_ad_main_image)
    .iconImageId(R.id.native_ad_icon_image)
    .titleId(R.id.native_ad_title)
    .textId(R.id.native_ad_text)
    .build();
//advertising end
    return v;
    }
so please someone tell me what is wrong in the code, or if anybody having the sample code on how to integrate mopub native ads to android application please share it....