ClickToSelectEditText.java

package br.com.jinkings.soluciona.application.ui.customview;

import android.annotation.TargetApi;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.Canvas;
import android.os.Build;
import android.util.AttributeSet;
import android.view.View;
import android.widget.EditText;

import java.util.List;

import br.com.jinkings.financing.R;

public class ClickToSelectEditText<T extends Listable> extends EditText {

    List<T> mItems;
    String[] mListableItems;
    CharSequence mHint;

    OnItemSelectedListener<T> onItemSelectedListener;

    public ClickToSelectEditText(Context context) {
        super(context);

        mHint = getHint();
    }

    public ClickToSelectEditText(Context context, AttributeSet attrs) {
        super(context, attrs);

        mHint = getHint();
    }

    public ClickToSelectEditText(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);

        mHint = getHint();
    }

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public ClickToSelectEditText(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);

        mHint = getHint();
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        setFocusable(false);
        setClickable(true);
    }

    public void setItems(List<T> items) {
        this.mItems = items;
        this.mListableItems = new String[items.size()];

        int i = 0;

        for (T item : mItems) {
            mListableItems[i++] = item.getLabel();
        }

        configureOnClickListener();
    }

    private void configureOnClickListener() {
        setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
                AlertDialog.Builder builder = new AlertDialog.Builder(view.getContext());
                builder.setTitle(mHint);
                builder.setItems(mListableItems, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int selectedIndex) {
                        setText(mListableItems[selectedIndex]);

                        if (onItemSelectedListener != null) {
                            onItemSelectedListener.onItemSelectedListener(mItems.get(selectedIndex));
                        }
                    }
                });
                builder.setPositiveButton(R.string.signup_job_type_dialog_cancel_button, null);
                builder.create().show();
            }
        });
    }

    public void setOnItemSelectedListener(OnItemSelectedListener<T> onItemSelectedListener) {
        this.onItemSelectedListener = onItemSelectedListener;
    }

    public interface OnItemSelectedListener<T> {
        void onItemSelectedListener(T item);
    }
}