android application crashes when call intent : > Android application crashes when call intent

give a proper solution
    public class InformationActivity extends Activity {

	Button btn_submit;
	CheckBox iz_check,bc_check,vc_check,ac_check,uc_check;
	EditText no_et;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_info);
		btn_submit = (Button) findViewById(R.id.btnsubmit1);
		iz_check= (CheckBox) findViewById(R.id.check1);
		bc_check=(CheckBox) findViewById(R.id.check2);
		vc_check=(CheckBox) findViewById(R.id.check3);
		ac_check=(CheckBox) findViewById(R.id.check4);
		uc_check=(CheckBox) findViewById(R.id.check5);
		no_et=(EditText) findViewById(R.id.edittext7);
		
		btn_submit.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				//String str = no_et.getText().toString();
				//SMSReceiver receiver = new SMSReceiver();
				
							
				
				
				Intent navigationintent = new Intent(InformationActivity.this, MainActivity.class);
				startActivity(navigationintent);
			}
		});
		
	}

}


> Please give me a solution

