worstkiller

import android.app.Fragment;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

worstkiller

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/frameLayoutContainer"
    tools:context="com.android.buffer.smsauth.MainActivity">

</FrameLayout>

worstkiller

import android.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.widget.AppCompatImageButton;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.Toast;

worstkiller

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/white"
    tools:context="com.android.buffer.smsauth.MainActivity">

    <FrameLayout

worstkiller

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
        android:shape="oval">
        <solid android:color="@color/colorAccent" />
        <size android:height="56dp" android:width="56dp"/>
</shape>

worstkiller

<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
    android:color="@color/rippleColor">
    <item>
        <shape
            android:shape="oval">
            <solid android:color="@color/colorAccent" />
            <size android:height="56dp" android:width="56dp"/>
        </shape>
    </item>

worstkiller

import android.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.widget.AppCompatImageButton;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;

worstkiller

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorPrimary"
    android:orientation="vertical"
    android:padding="16dp">

worstkiller

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

    <item
        android:left="-2dp"
        android:right="-2dp"
        android:top="-2dp">
        <shape>
            <solid android:color="@color/editTextCode" />

worstkiller

<resources>
    <string name="app_name">Sms Auth</string>
    <string name="text_enter_your_number_here">Enter your number here</string>
    <string name="text_india_91">INDIA (+91)</string>
    <string name="hint_your_phone_number">Your Phone Number</string>
    <string name="text_verification_code">Verification Code</string>
    <string name="text_enter_code">Please enter the verification code sent to \n %1s</string>
    <string name="text_phone_valid">Please enter a valid phone no.</string>
    <string name="button_verify">Verify</string>
</resources>