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Android Build an Interactive Story App The Rest of the Story Maintaining a Custom Back Stack

Posted by pratyush raj
pratyush raj
7,097 Points

can't use onBackPressed??

in the interactive app story i can't use the onBackPressed it is saying ; missing but even if i am giving ; nothing is happening can someone help me?????

pratyush raj
pratyush raj
7,097 Points

can someone please help this is my code ``` import android.content.Intent; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.ImageView; import android.widget.TextView;

import com.pratyush.interactivestory.R; import com.pratyush.interactivestory.model.page; import com.pratyush.interactivestory.model.story;

import java.util.Stack;

public class StoryActivity extends AppCompatActivity {

private story Story;
private ImageView storyImageView;
private TextView storyTextView;
private Button choice1Button;
private Button choice2Button;
private String name;
private Stack<Integer> pageStack = new Stack<Integer>();
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_story);

    storyImageView = findViewById(R.id.storyImageView);
    storyTextView = findViewById(R.id.storyTextView);
    choice1Button = findViewById(R.id.choice1Button);
    choice2Button = findViewById(R.id.choice2Button);

    Intent intent = getIntent();
    name = intent.getStringExtra(getString(R.string.key_name));
    if (name==null || name.isEmpty()) {
        name="Friend";
    }

    Story = new story();
    loadpage(0);

}

private void loadpage(int pageNumber) {
    pageStack.push(pageNumber);
    final page Page = story.getpage(pageNumber);
    Drawable image = ContextCompat.getDrawable(this,Page.getImageId());
    storyImageView.setImageDrawable(image);

    String pageText = getString(Page.getTextId());
    pageText = String.format(pageText,name);

    storyTextView.setText(pageText);
    if (Page.isFinalPage()){
        choice1Button.setVisibility(View.INVISIBLE);
        choice2Button.setText(R.string.play_again);
        choice2Button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                loadpage(0);
            }
        });
    }
    else {

        choice1Button.setText(Page.getChoice1().getTextId());
        choice1Button.setVisibility(View.VISIBLE);

        choice1Button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                int nextPage = Page.getChoice1().getNextPage();
                loadpage(nextPage);
            }
        });
        choice2Button.setText(Page.getChoice2().getTextId());
        choice2Button.setVisibility(View.VISIBLE);

        choice2Button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                int nextPage = Page.getChoice2().getNextPage();
                loadpage(nextPage);
            }
        });
    }

    @Override
    public void onBackPressed() {
        pageStack.pop();
        if (pageStack.isEmpty()) {
            super.onBackPressed();
        } else {
            loadpage(pageStack.pop());
        }
    }









}

}```

it is saying on public void onBackPressed() { ; this is expected i don't know