Create an application that will display toast (Message) on specific interval of time

---

Code:

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.jayesh.chronometer">

    <application

        android:allowBackup="true"

        android:icon="@mipmap/ic_launcher"

        android:label="@string/app_name"

        android:roundIcon="@mipmap/ic_launcher_round"

        android:supportsRtl="true"

        android:theme="@style/AppTheme">

        <activity android:name=".MainActivity">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout 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"

    tools:context="com.jayesh.chronometer.MainActivity">

    <TextView

        android:id="@+id/tv"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:textAppearance="@android:style/TextAppearance.DeviceDefault.Medium" />

    <Chronometer

        android:id="@+id/cnm"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerHorizontal="true"

        android:layout_centerVertical="true"

        android:format="Timer : %s"/>

</RelativeLayout>

MainActivity.java

package com.jayesh.chronometer;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.widget.Chronometer;

import android.widget.TextView;

import android.widget.Toast;

import static android.R.attr.duration;

public class MainActivity extends AppCompatActivity {

    Chronometer c;

    int i=0;

    int duration=10;

    TextView tv;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        c=(Chronometer)findViewById(R.id.cnm);

        tv=(TextView)findViewById(R.id.tv);

        c.start();

        c.setOnChronometerTickListener(new Chronometer.OnChronometerTickListener() {

            @Override

            public void onChronometerTick(Chronometer arg0) {

                tv.setText("Meaasge will be displayed after " + (duration - (i + 1)) + " seconds");

                i++;

                if (i >= duration)

                {

Toast.makeText(getApplicationContext(),"Message"+(i/10),   Toast.LENGTH_LONG).show();

                    duration=duration+10;

                }

            }

        });

    }

}

OUTPUT: