Sharondohp Sharonas
Reputation: 277
How do i make a simple timer in java with a button click to start/stop the timer?
In android studio in the MainActivity in the onCreate i did:
timerValueRecord = (TextView) findViewById(R.id.timerValueRecord);
In strings.xml i added:
<string name="timerValRecord">Recording Time: 00:00:00</string>
In activity_main.xml i added:
<TextView
android:id="@+id/timerValueRecord"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:textSize="20sp"
android:textColor="#000000"
android:layout_marginTop="315dp"
android:text="@string/timerValRecord" />
In the activity_main designer it looks like:
In the MainActivity i have a touch event:
@Override
public boolean onTouchEvent(MotionEvent event)
{
float eventX = event.getX();
float eventY = event.getY();
float lastdownx = 0;
float lastdowny = 0;
switch (event.getAction())
{
case MotionEvent.ACTION_DOWN:
lastdownx = eventX;
lastdowny = eventY;
Thread t = new Thread(new Runnable()
{
@Override
public void run()
{
byte[] response = null;
if (connectedtoipsuccess == true)
{
if (is_start == true)
{
response = Get(iptouse + "start");
is_start = false;
} else
{
textforthespeacch = "Recording stopped and preparing the file to be shared on youtube";
MainActivity.this.initTTS();
response = Get(iptouse + "stop");
is_start = true;
startuploadstatusthread = true;
servercheckCounter = 0;
}
if (response != null)
{
try
{
a = new String(response, "UTF-8");
MainActivity.this.runOnUiThread(new Runnable()
{
@Override
public void run()
{
if (a.equals("Recording started"))
{
status1.setText("Recording");
}
if (a.equals("Recording stopped and preparing the file to be shared on youtube"))
{
status1.setText("Recording Stopped");
}
}
});
textforthespeacch = a;
MainActivity.this.initTTS();
} catch (UnsupportedEncodingException e)
{
e.printStackTrace();
}
Logger.getLogger("MainActivity(inside thread)").info(a);
}
}
}
});
t.start();
return true;
case MotionEvent.ACTION_MOVE:
break;
case MotionEvent.ACTION_UP:
break;
default:
return false;
}
return true;
}
What i want to do is when in the touch event it's true after this line:
if (is_start == true)
Start the timer and display on the timerValueRecord the time running including milliseconds seconds and minutes until the user touch again and then it's getting to the stop part and then to stop the timer.
The problem is how to build the timer at all and how to stop and start it.
Upvotes: 0
Views: 2556
Answers (2)
Burhanuddin Rashid
Reputation: 5370
You can try this below Code:
public class ShowTimer {
private long startTime = 0L;
private Handler customHandler = new Handler();
long timeInMilliseconds = 0L;
long timeSwapBuff = 0L;
long updatedTime = 0L;
public void StartTimer() {
startTime = SystemClock.uptimeMillis();
customHandler.postDelayed(updateTimerThread, 0);
}
public void StopTimer() {
timeSwapBuff += timeInMilliseconds;
customHandler.removeCallbacks(updateTimerThread);
}
private Runnable updateTimerThread = new Runnable() {
public void run() {
timeInMilliseconds = SystemClock.uptimeMillis() - startTime;
updatedTime = timeSwapBuff + timeInMilliseconds;
int secs = (int) (timeInMilliseconds / 1000);
int mins = secs / 60;
secs = secs % 60;
int hours = mins / 60;
mins = mins % 60;
//int milliseconds = (int) (updatedTime % 1000);
//+ ":" + String.format("%03d", milliseconds)
String timer = "" + String.format("%02d", hours) + ":" + String.format("%02d", mins) + ":" + String.format("%02d", secs);
//set yout textview to the String timer here
customHandler.postDelayed(this, 1000);
}
};
You can use StartTimer() and StopTimer() function where you want to start or stop the timer:
Upvotes: 2
Aditya Vyas-Lakhan
Reputation: 13555
try this way
public class AndroidTimerTaskExample extends Activity {
Timer timer;
TimerTask timerTask;
//we are going to use a handler to be able to run in our TimerTask
final Handler handler = new Handler();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
protected void onResume() {
super.onResume();
//onResume we start our timer so it can start when the app comes from the background
startTimer();
}
public void startTimer() {
//set a new Timer
timer = new Timer();
//initialize the TimerTask's job
initializeTimerTask();
//schedule the timer, after the first 5000ms the TimerTask will run every 10000ms
timer.schedule(timerTask, 5000, 10000); //
}
public void stoptimertask(View v) {
//stop the timer, if it's not already null
if (timer != null) {
timer.cancel();
timer = null;
}
}
public void initializeTimerTask() {
timerTask = new TimerTask() {
public void run() {
//use a handler to run a toast that shows the current timestamp
handler.post(new Runnable() {
public void run() {
//get the current timeStamp
Calendar calendar = Calendar.getInstance();
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd:MMMM:yyyy HH:mm:ss a");
final String strDate = simpleDateFormat.format(calendar.getTime());
//show the toast
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(getApplicationContext(), strDate, duration);
toast.show();
}
});
}
};
}
}
Upvotes: 2