App Crash

private String mName;
private Story mStory = new Story();

private ImageView mImageView;
private TextView mTextView;
private Button mChoice1;
private Button mChoice2;
private Page mCurrentPage;

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

    mImageView = (ImageView)findViewById(R.id.imageView2);
    mTextView = (TextView)findViewById(R.id.textView);
    mChoice1 = (Button)findViewById(R.id.button2);
    mChoice2 = (Button)findViewById(R.id.button3);

    Intent intent = getIntent();
    mName = intent.getStringExtra(getString(R.string.name));
    if(mName == null) mName = "Friend";

    loadPage(0);
}

private void loadPage(int nextPage){
    mCurrentPage = mStory.getPage(nextPage);

    Drawable drawable = ResourcesCompat.getDrawable(getResources(), mCurrentPage.getImageView(), null);
    mImageView.setImageDrawable(drawable);

    String text = mCurrentPage.getTextView();
    text = String.format(text, mName);
    mTextView.setText(text);

    mChoice1.setText(mCurrentPage.getChoice1().getText());
    mChoice2.setText(mCurrentPage.getChoice2().getText());

    if(mCurrentPage.isFinal()){
        mChoice2.setVisibility(View.INVISIBLE);
        mChoice1.setText("PLAY AGAIN");
        mChoice1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                finish();
            }
        });
    } else {
        mChoice1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                int next = mCurrentPage.getChoice1().getNextPage();
                loadPage(next);
            }
        });

        mChoice2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                int next = mCurrentPage.getChoice2().getNextPage();
                loadPage(next);
            }
        });
    }
}

private int mImageView;
private String mTextView;
private Choice mChoice1;
private Choice mChoice2;
private boolean mIsFinal = false;


public boolean isFinal() {
    return mIsFinal;
}

public void setFinal(boolean isFinal){mIsFinal = isFinal;}

public Page(int id, String text) {
    mImageView = id;
    mTextView = text;
    mChoice1 = null;
    mChoice2 = null;
    mIsFinal = true;
}

public Page (int id, String text, Choice choice1, Choice choice2){
    mImageView = id;
    mTextView = text;
    mChoice1 = choice1;
    mChoice2 = choice2;
}

public int getImageView(){
    return mImageView;
}

public void setImageView(int id){
    mImageView = id;
}

public String getTextView() {
    return mTextView;
}

public void setTextView(String textView) {
    mTextView = textView;
}

public Choice getChoice1() {
    return mChoice1;
}

public void setChoice1(Choice choice1) {
    mChoice1 = choice1;
}

public Choice getChoice2() {
    return mChoice2;
}

public void setChoice2(Choice choice2) {
    mChoice2 = choice2;
}