LabeledSliderQuestionFragment.java

package org.adaptlab.chpir.android.survey.QuestionFragments;

import java.util.List;

import org.adaptlab.chpir.android.survey.Models.Option;

import android.util.TypedValue;
import android.view.Gravity;
import android.view.ViewGroup;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;

public class LabeledSliderQuestionFragment extends SliderQuestionFragment {
    
    @Override
    public void beforeAddViewHook(ViewGroup questionComponent) {
        if (getQuestion().hasOptions()) {
            TableLayout tableLayout = new TableLayout(getActivity());
            TableRow tableRow = new TableRow(getActivity());
            tableLayout.setStretchAllColumns(true);
            
            for (Option option : getQuestion().options()) {
                TextView optionText = new TextView(getActivity());
                optionText.setTextSize(TypedValue.COMPLEX_UNIT_SP, 11);
                optionText.setGravity(getGravityByPosition(option));
                optionText.setText(option.getText());
                tableRow.addView(optionText);
            }
            
            tableLayout.addView(tableRow);
            questionComponent.addView(tableLayout);
        }
    }
    
    private int getGravityByPosition(Option option) {
        List<Option> options = getQuestion().options();        
        if (options.isEmpty()) return Gravity.START;
        
        if (options.get(0).equals(option)) {
            // Left-most label
            return Gravity.START;
        } else if (options.get(options.size() - 1).equals(option)) {
            // Right most label
            return Gravity.END;
        } else {
            // All other labels
            return Gravity.CENTER_HORIZONTAL;
        }       
    }
}