I am Getting a null pointer exception when I click an options button that changes activities here is the buttons code

```
 options.setOnClickListener(new View.OnClickListener() 
                {

                    @Override
                    public void onClick(View arg0) 
                    {
                        Intent i = new Intent(Main_Timer_Activity.this,Options_Activity.class);
                        startActivity(i);
                        finish();
                    }
                });

```

And I Only have an initialise method on the options activity 

```
 private void initialise()
    {
        minutes = (EditText)findViewById(R.id.edtMin);
        seconds = (EditText)findViewById(R.id.edtSec);
        coffeeS = (Spinner)findViewById(R.id.spinCOF);
        save = (Button)findViewById(R.id.btnSave);
        ArrayAdapter<String>adapter = new ArrayAdapter<String>
                (Options_Activity.this,android.R.layout.simple_spinner_item,coffee);
        coffeeS.setAdapter(adapter);
    }

```

Here is the options Activity on create

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

        back.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent i = new Intent(Options_Activity.this,Main_Timer_Activity.class);
                startActivity(i);
                finish();
            }
        });

```