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App crashing on starting another activity with intent and .putExtra

I am trying to open another activity by intent and putExtra.
It used to run fine previously, but now it crashes.
startActivity(new Intent(ForgotPassword.this, OtpVerification.class)
.putExtra("user", user)
.putExtra("otp", verificationId));
finish();
the user here is a class object and am receiving it in another activity
user = getIntent().getParcelableExtra("user");
the app is not even going to another activty and crashes without any error message in logcat.
It only happens if i add .putExtra code

Try adding the putExtra in the following way
Intent intent = new Intent(ForgotPassword.this, OtpVerification.class);
intent.putExtra("user", user);
intent.putExtra("otp", verificationId);
startActivity(intent);
finish();
and then get the intent extras
Intent intent= getIntent();
Bundle extras = intent.getExtras();
if(extras != null)
String data = extras.getString("keyName");

Your user is an Object that you're trying to pass from one activity to another.
So you can create a custom class that implements the Serializable interface.(you must be able to use Parcelable too but i don't have experience with it )
//To pass:
intent.putExtra("User", user);
// To retrieve object in second Activity
getIntent().getSerializableExtra("User");
Point to note: each nested class in your main custom class must have implemented the Serializable interface
eg:
class MainClass implements Serializable {
public MainClass() {}
public static class ChildClass implements Serializable {
public ChildClass() {}
}
}
Ref:How to pass an object from one activity to another on Android

Thank you for your suggestions, the actual problem I found was that my user object had a variable called image (String type) and had a value of length about 1,000,000 (I was storing string encoded image using base64 in it). Once i decreased the size to thousands , it worked. I don't know why the app cannot send such large data across activities.

Is it possible to open intent that require extras without passing it?

So i have intent that require some extras,but i was thinking is it possible to open it without passing extras and not getting null pointer?
EDIT: I have activity A and activity B. When i press button im passing few strings as extras to activity B. If its not passed,I will get null pointer and app will crash. What i want is, is it possible to check if there is extras passed,and if its passed to get them,if its not passed continue without it and not get null pointer error?

Yes, it is possible to check it. You need to use Intent.hasExtra(String name) where name is the name of the variable you want to check whether it was passed or not. For example: you place inside Intent string called firstName and then you want to use it in another activity. So here's the code you should place in the second activity:
if(Intent.hasExtra("firstName")) //Intent.hasExtra() return true or false
{
String firstName = Intent.getStringExtra("firstName");
//place here code you want to execute if intent contains firstName
}
else
{
//place here code you want to execute if intent does not contain firstName
}
Related question: Check if extras are set or not

Try this code
in A.java:
Intent intent=new Intent(A.this,B.class);
intent.putExtra("data","my custom data here");
startActivity(intent);
in B.java:
String data;
if (getIntent().hasExtra("data") && getIntent().getStringExtra("data")!=null){ //add a check like that
data=getIntent().getStringExtra("data");
}else{
//add your condition when data parameter is not there or null
}

Using Integers, Strings etc in other Activities

I've got two Activities. In one I calculate some things and therefore I have some Integers and also some Strings stored. So now I would like to use these Stings and Integers in my second Activity. How an I use them in my second Activity?
thanks

You gotta pass them to your second activity.
When you create Intent to start activity
Intent i = new Intent(FirstActivity.this, SecondActivity.class);
do extra step like this
i.putExtra("integer", myInteger); //where myInteger is integer you have in first Activity
i.putExtra("string", myString); //where myString is String you have in first Activity
startActivity(i);
and now in second Activity to access those values use following code
int in = this.getIntent().getExtras().getInt("integer");
String str = this.getIntent().getExtras().getString("string");
as simple as that

Using integer from one class in another Android

I need some help with using integer from one activity to another.
I am making some basic math program(game). It gets two random numbers, random operator, and 30 secs to solve math problems as much as you can.
If you solve problem u get 1 point.
Anyway right now, I want to get number of points that user have made and use it in another activity called *RankActivity*.
Main activity is called *BrzoRacunanjeActivity* and it contains button and one *int* called *poenibrojanje* which get number of points that user have made, and when I click on button, it opens new Activity with this line:
startActivity(new Intent(this, RankActivity.class));
As you can see another Activity is called RankActivity, and there I wrote :
*BrzoRacunanjeActivity a1 = new BrzoRacunanjeActivity();*
*System.out.println("Number of points:" + a1.poenibrojanje);;*
and I get all time this reuslt: 09-22 09:09:14.940: INFO/System.out(289): Number of points:0

Try this:
Intent intent = new Intent(this, RankActivity.class);
intent.putExtra("points", pointsVar);
startActivity(intent);
In onCreate of RankActivity:
getIntent().getIntExtra("points", 0);

so you want to pass integer value from one activity to another activity? right...
try:
Intent intent = new Intent(currentclass.this, destination.class);
intent.putExtra("point", pointvalue);
startActivity(intent);
at destination activity:
final int getpoint = getIntent().getExtras().getInt("point");
This will solve your problem.

first of all make
static variable like as public static int poenibrojanje;
in your BrzoRacunanjeActivity.class file now you can use this variable in any other class like as
BrzoRacunanjeActivity.poenibrojanje
or you can use putExtras(); method.
in you main activity.
Intent i = new Intent(this, RankActivity.class);
i.putExtra("Value",poenibrojanje);
in your next activity
int v = (getIntent().getExtras().getInt("Value")) ;

Android: problem in getText method of EditText

In my project I have two activities or classes. In first activity I have a EditText and I want to get the text of it from second class.
In the first class I wrote this code but it seems has problem.
public String getTextMessage()
{
return textMessage.getText().toString();
}
because in second class when I want to get it, program crashes.
message = encode.getTextMessage();
What is your suggestion?

As told by sunil you have to firstly get string from edittextbox and through intent send it to another second activity. After start of second activity you have to get text from bundle.
code snippet is given below...
Activity A
Intent i = new Intent(this, Second.class);
i.putExtra("EXTRATEXT", editText.gettext().toString());
startActivity(i);
Activity B
Class Second extends Activity{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String text = getIntent().getExtras().getString("EXTRATEXT");
}

Access the text by getText() from edit text and store it in an string. when you move to second activity sent string variable to second class via bundel. Extract the bundel in second class and use it.

You have to pass the value through intents