Passing values to activities using Extras: Android Programming

Passing To an Activity:
-----------------------
Pass data to an activity from MainActivity:
startActivity(intent);

Getting value in second activity's onCreate():
Intent intent = getIntent();
// 0 is the default value if the parameter not set.

Returning a value:
------------------
Change calling code (1st activity) to use startActivityForResult():
startActivityForResult(intent, 12345);
// 12345 is a code to myself to identify which call is returning.

Set data in the called activity (2nd activity):
Intent returnData = new Intent();
setResult(Activity.RESULT_OK, returnData);
// use Activity.RESULT_CANCELED to indicate failure.
finish();

Catch the return value in 1st activity's onActivityResult:
protected void onActivityResult(int requestCode, int resultCode, Intent data) {

switch(requestCode) {
case 12345:
if (resultCode == Activity.RESULT_OK) {

// 0 is default value if none was specified

// Do something with the answer...
break;
}
}

[Redkaa]

Fantastic tutorial, really helped me with passing integers. A lot of tutorials only used strings as examples. Thank you!

[stevennieves]

Thank you! Really learned about Extras and as a result, I was able to overcome a big hurdle in my project.

[bitsinmyblood]

How is you only have 58 views on this video, because you created a great video, here. Thank you.

[ausackermann]

this is so clear and straightforward. THX

[codingwithjoyk]

Thank you!  Your videos are great...  more, please, more!

[amitguitarist]

great tutorial ... paid attention to details ..thanks for sharing 

[alexcombow]

Amazing tutorial, this fixed my code!

[voiceoftheconscienceint]

thanks for this tutorial.pls how can save the data in sqlitedatabase and still pass the saved data to another activity?thanks

[shrutichennuri]

How can i pass values without using any button??

[joelowthianYT]

How can I pass multiple values to activities? I have 7 different EditTexts that I need to bring into another activity but I cannot do it with this method.

[altefoersempoi]

woa really good tutorial saved my life ... but what if everytime I put numbers on the edittext it adds up to the last input in the edittext 
like 
I input a number then press button it shows on the nextactivity then I want to increase the number by pressing backbutton and putting another value on the edittext button then it adds up to the old input not just by changing the value but really adding the new input to the old input. tnx help really appreciated