Simple Current Time Example

Simple Current Time Example

It is simple better than using thread

package com.tmoney.taxi.sendmessagedelayed;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import java.text.SimpleDateFormat;
import java.util.Date;

public class MainActivity extends AppCompatActivity {
    private static final int MESSAGE_TIMER_START = 1000;
    Handler timerHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            long now = System.currentTimeMillis();
            Date date = new Date(now);
            SimpleDateFormat simpleDate = new SimpleDateFormat("hh:mm aa");
            String currentTime = simpleDate.format(date);
            clockText.setText(currentTime);
            Log.d("TEST_LOG", "currentTime:"+currentTime);
            sendEmptyMessageDelayed(0, MESSAGE_TIMER_START);
        }
    };

    private TextView clockText;
    private Button startBtn;
    private Button endBtn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        clockText = findViewById(R.id.text);
        startBtn = findViewById(R.id.start);
        endBtn = findViewById(R.id.end);
    }

    public void startClick(View v) {
        timerHandler.sendEmptyMessage(0);
    }

    public void endClick(View v) {
        timerHandler.removeMessages(0);
    }
}