ClearableEditText.java

package br.com.revija.cadastroimobiliario.controller.components;

/**
 * Created by Júnior César Abreu <juniorcesarabreu<em>live.com> on 12/10/2017.
 */

import android.content.Context;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RelativeLayout;

import br.com.revija.cadastroimobiliario.R;

public class ClearableEditText extends RelativeLayout {
    LayoutInflater inflater = null;
    EditText edit_text;
    Button btn_clear;

    public ClearableEditText(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        initViews();
    }

    public ClearableEditText(Context context, AttributeSet attrs) {
        super(context, attrs);
        initViews();
    }

    public ClearableEditText(Context context) {
        super(context);
        initViews();
    }

    void initViews() {
        inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        inflater.inflate(R.layout.clearable_edit_text, this, true);
        edit_text = findViewById(R.id.clearable_edit);
        btn_clear = findViewById(R.id.clearable_button_clear);
        btn_clear.setVisibility(RelativeLayout.INVISIBLE);
        clearText();
        showHideClearButton();
    }

    void clearText() {
        btn_clear.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                edit_text.setText("");
            }
        });
    }

    void showHideClearButton() {
        edit_text.addTextChangedListener(new TextWatcher() {
            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                if (s.length() > 0)
                    btn_clear.setVisibility(RelativeLayout.VISIBLE);
                else
                    btn_clear.setVisibility(RelativeLayout.INVISIBLE);
            }

            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            }

            @Override
            public void afterTextChanged(Editable s) {
            }
        });
    }

    public Editable getText() {
        Editable text = edit_text.getText();
        return text;
    }
}

// Uso
//<?xml version="1.0" encoding="utf-8"?>
//<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
//        android:layout_width="fill_parent"
//        android:layout_height="fill_parent" >
//
//<com.and.ab1209.ClearableEditText
//        android:id="@+id/edit_text_clearable"
//        android:layout_width="fill_parent"
//        android:layout_height="wrap_content" />
//</LinearLayout>