ProductOptionsLayout.java

package com.mozu.mozuandroidinstoreassistant.app.views;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.LinearLayout;
import android.widget.Spinner;
import android.widget.TextView;

import com.mozu.api.contracts.productruntime.ProductOptionValue;
import com.mozu.mozuandroidinstoreassistant.app.R;

import java.util.List;

public class ProductOptionsLayout extends LinearLayout {

    public onOptionChangeListener mOnOptionChangeListener;
    private TextView mTitle;
    private Spinner mSpinner;
    private TextView mValue;
    private String mAttributeFQN;

    public ProductOptionsLayout(Context context, onOptionChangeListener optionChangeListener) {
        super(context);
        initViews(context);
        mOnOptionChangeListener = optionChangeListener;
    }

    private void initViews(Context context) {
        setOrientation(LinearLayout.VERTICAL);
        LayoutInflater inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View v = inflater.inflate(R.layout.product_option, this, true);
        mTitle = (TextView) v.findViewById(R.id.product_option_label);
        mSpinner = (Spinner) v.findViewById(R.id.product_option_spinner);
        mSpinner.post(new Runnable() {
            @Override
            public void run() {
                mSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
                    @Override
                    public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
                        mOnOptionChangeListener.onOptionChanged();
                    }

                    @Override
                    public void onNothingSelected(AdapterView<?> adapterView) {
                        //DO NOTHING
                    }
                });

            }
        });
        mValue = (TextView) v.findViewById(R.id.product_option_name);
    }

    @Override
    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
        super.onLayout(changed, left, top, right, bottom);
        MarginLayoutParams margins = MarginLayoutParams.class.cast(getLayoutParams());
        margins.setMargins(0, 0, 20, 0);
        setLayoutParams(margins);
    }

    public void setTitle(String title) {
        mTitle.setText(title);
    }

    public String getAttributeFQN() {
        return mAttributeFQN;
    }

    public void setAttributeFQN(String attributeFQN) {
        mAttributeFQN = attributeFQN;
    }

    public String getAttributeValue() {
        if (mValue.getVisibility() == View.VISIBLE) {
            return mValue.getText().toString();
        } else {
            return ((ProductOptionValue) mSpinner.getSelectedItem()).getValue().toString();
        }
    }

    public void setSpinnerOptions(List<ProductOptionValue> productOptions) {
        SpinnerAdapter spinnerAdapter = new SpinnerAdapter(getContext(), R.layout.productoption_spinner_item, R.id.product_option_name, productOptions);
        if (productOptions.size() > 1) {
            mValue.setVisibility(View.GONE);
            mSpinner.setVisibility(View.VISIBLE);
            mSpinner.setClickable(true);
        } else {
            mSpinner.setVisibility(View.GONE);
            mValue.setVisibility(View.VISIBLE);
            mSpinner.setClickable(false);
            mValue.setText(productOptions.get(0).getValue().toString());
        }
        mSpinner.setAdapter(spinnerAdapter);
    }

    public interface onOptionChangeListener {
        public void onOptionChanged();
    }

    class SpinnerAdapter extends ArrayAdapter<ProductOptionValue> {
        public SpinnerAdapter(Context context, int res, int textViewResourceId, List<ProductOptionValue> objects) {
            super(context, res, textViewResourceId, objects);
        }

        @Override
        public View getDropDownView(int position, View convertView, ViewGroup parent) {
            if (convertView == null) {
                LayoutInflater inflater = LayoutInflater.from(parent.getContext());
                convertView = inflater.inflate(R.layout.productoption_spinner_item, parent, false);
            }
            TextView mTextView = (TextView) convertView.findViewById(R.id.product_option_name);
            ProductOptionValue optionValue = getItem(position);

            mTextView.setText(optionValue.getValue().toString());
            return convertView;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            TextView textView = (TextView) View.inflate(parent.getContext(), R.layout.productoption_dropdown_resource, null);
            textView.setText(getItem(position).getValue().toString());
            return textView;

        }

    }
}