How to pass integer from one Activity to another?

It's simple. On the sender side, use Intent.putExtra:

Intent myIntent = new Intent(A.this, B.class);myIntent.putExtra("intVariableName", intValue);startActivity(myIntent);

On the receiver side, use Intent.getIntExtra:

 Intent mIntent = getIntent(); int intValue = mIntent.getIntExtra("intVariableName", 0);

Their are two methods you can use to pass an integer. One is as shown below.

A.class

Intent myIntent = new Intent(A.this, B.class);myIntent.putExtra("intVariableName", intValue);startActivity(myIntent);

B.class

Intent intent = getIntent();int intValue = intent.getIntExtra("intVariableName", 0);

The other method converts the integer to a string and uses the following code.

A.class

Intent intent = new Intent(A.this, B.class);Bundle extras = new Bundle();extras.putString("StringVariableName", intValue + "");intent.putExtras(extras);startActivity(intent);

The code above will pass your integer value as a string to class B. On class B, get the string value and convert again as an integer as shown below.

B.class

   Bundle extras = getIntent().getExtras();   String stringVariableName = extras.getString("StringVariableName");   int intVariableName = Integer.parseInt(stringVariableName);

In Activity A

private void startSwitcher() {    int yourInt = 200;    Intent myIntent = new Intent(A.this, B.class);    intent.putExtra("yourIntName", yourInt);    startActivity(myIntent);}

in Activity B

int score = getIntent().getIntExtra("yourIntName", 0);