Question

header.xml

<LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >
        <TextView
            android:id="@+id/txtTime"               
            android:layout_width="0dip"
            android:layout_height="fill_parent"
            android:layout_marginRight="10dp"
            android:layout_weight="1"
            android:gravity="right" />
    </LinearLayout>

---

i added header.xml in all my screen layouts…

 <include
        android:id="@+id/top_header"
        layout="@layout/header" />

Now i want start timer and set text of every remaining seconds in text header txtTime…
So which screen i write code for countdown timer and set textview so all screen display time in textview..

can any one suggest me its possible to set text only one screen and display in all screen ?

Thanks

Answer 1

Please try below code . It will solve your prolem.

Follow below steps.

1) Make one BaseActivity Class.
2) Make One MainActivity Class and extend BaseActivity.
3) Make another SecondActivity class and extend BaseActivity.

Here i post all the classes you required .

What i do in BaseActivity ?

I create one Countdown Timer class called MyCount which will display
the remaining time . I create one boolean flag which set false by
default . so when user call setHeading() function of BaseActivity it
will check the falg if it false then start the timer and if it is true
then again set the timer and starts again .

BaseActivity

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

public abstract class BaseActivity extends Activity
{
    private TextView textView = null;
    public static MyCount counter = null; 
    private static boolean flag = false;
    private static long millisUntilFinishedVariable = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);

    }

    protected void setHeading(String message) 
    {
        if(textView == null)
        {
            textView = (TextView)findViewById(R.id.textView);
            if(textView != null)
                textView.setText(message);

            if(flag == false)
            {
                counter = new MyCount(30000, 1000);
                counter.start();
            }
            else
            {
                            counter.cancel();
                counter = new MyCount(millisUntilFinishedVariable, 1000);
                counter.start();
            }
        }
    }

    // countdowntimer is an abstract class, so extend it and fill in methods
    public class MyCount extends CountDownTimer
    {

        public MyCount(long millisInFuture, long countDownInterval) 
        {
            super(millisInFuture, countDownInterval);
        }

        @Override
        public void onFinish() 
        {
            textView.setText("done!");   //TextView object should be defined in onCreate
            flag = false;
        }

        @Override
        public void onTick(long millisUntilFinished) 
        {
            millisUntilFinishedVariable = millisUntilFinished;
            flag = true;
            textView.setText("Left:" + millisUntilFinished/1000);// This will be called every Second.
        }
    }
} 

MainActivity

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends BaseActivity 
{
    private Button buttonClick = null;
    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setHeading("Text From Main Activity"); 

        buttonClick = (Button)findViewById(R.id.buttonClick);
        buttonClick.setOnClickListener(new OnClickListener() 
        {
            @Override
            public void onClick(View arg0) 
            {
                startActivityForResult(new Intent(MainActivity.this,SecondActivity.class), 0);
            }
        });
    }
}

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

   <include layout="@layout/header"/>

   <Button
       android:id="@+id/buttonClick"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_alignParentLeft="true"
       android:layout_alignParentTop="true"
       android:layout_marginLeft="96dp"
       android:layout_marginTop="68dp"
       android:text="Second Activity" />

</RelativeLayout>

SecondActivity

import android.os.Bundle;

public class SecondActivity extends BaseActivity 
{
    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.second_activity);
        setHeading("From Second Activity");
    }
}

second_activity.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

   <include layout="@layout/header"/>

</RelativeLayout>

header.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >


    <TextView 
        android:id="@+id/textView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textSize="18.0sp"/>

</LinearLayout>