CODEWITHSUNDEEP
javaandroidtimer
EM10
EM10

Reputation: 815

Show a countdown and change to another activity when countdown is over.

My activity opens another activity after 10 seconds. I know how to open the another activity after some time. But what I want to do is also count every second so I can display it to the user. How can I do that? In my activity I have a textview on which I want to show the count down.

public class RestingActivity extends Activity{
    private Handler mHandler = new Handler();

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

    mHandler.postDelayed(mLaunchTask, 10000);
}

public void skipRestTime(View view) 
{
    finish();
}


private Runnable mLaunchTask = new Runnable() {
    public void run() {
        finish(); // Closing the activity
    }
 };

}

Upvotes: 1

Views: 909

Answers (2)

IvanRF
IvanRF

Reputation: 7265

You could use the CountDownAnimation class. You only need to pass the TextView in which the count down will be shown and set the CountDownListener. Then, implement onCountDownEnd to change the activity.

I use a Handler, which is much more accurate than CountDownTimer. When I implemented CountDownAnimation, I made time tests over those classes.

Upvotes: 1

Jebasuthan
Jebasuthan

Reputation: 5604

Please check my answer. Its working fine for me. Hope it should helpful for you. Please try and let me know. Thanks

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_alignParentLeft="true"
    android:background="#0090FF"
    android:padding="10dp"
    android:keepScreenOn="true" >

    <TextView
    android:id="@+id/txtCountDown"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="30dp"
    android:textColor="#fff" />

</RelativeLayout>

MainActivity.java:

import android.os.Bundle;
import android.os.CountDownTimer;
import android.app.Activity;
import android.view.Menu;
import android.widget.TextView;

public class MainActivity extends Activity {

    private static TextView txtCountDown;
    private static CountDownTimer countDownTimer = null;
        private static final long startTime = 120 * 1000;
        private static final long interval = 1 * 1000;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        txtCountDown = (TextView) findViewById(R.id.txtCountDown);
        countDownTimer = new MyCountDownTimer(startTime, interval);
        if(txtCountDown!=null){
            txtCountDown.setText(String.valueOf(startTime / 1000));
        }
        countDownTimer.start();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    public class MyCountDownTimer extends CountDownTimer {

      public MyCountDownTimer(long startTime, long interval) {
          super(startTime, interval);
      }

      @Override
      public void onFinish() {
          if(txtCountDown!=null){
            txtCountDown.setText("Time's up!");
          }
      }

      @Override
      public void onTick(long millisUntilFinished) {
          if(txtCountDown!=null){
            txtCountDown.setText("" + millisUntilFinished / 1000);
          }
      }
   }
}

Upvotes: 2

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