Onclick Avtivity funktioniert nicht

startActivity(intent);

PendingIntent pi =PendingIntent.getActivity(this,0,new Intent(this,sms_sending.class),0);
SmsManager sms = SmsManager.getDeffault();
sms.sendTextMessage(number,null,message,pi,null);

package com.test.main;
public class main extends Activity implements View.OnClickListener{
 
 public static final String LOG_TAG = "debug";
 Button sendButton;
 Button recieveButton;
 Button chk1;
 Button chk2;
 Button chk3;
 Button chk4;
 Button chk5;
 Button chk6;
 Button chk7;
 Button chk8;
 Button chk9;
 Button chk10;
 public int[] checked = new int[10];
 int i = 0;
 
 private Intent intentService;
 
 
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        TextView tv = new TextView(this);
        tv.setText("main");
        setContentView(R.layout.main);
        sendButton = (Button) findViewById(R.id.sms_sending_button);
        recieveButton = (Button) findViewById(R.id.sms_recieving_button);
        chk1 = (Button) findViewById(R.id.chk1);
        chk2 = (Button) findViewById(R.id.chk2);
        sendButton.setOnClickListener(this);
        recieveButton.setOnClickListener(this);
        chk1.setOnClickListener(this);
        chk2.setOnClickListener(this);
}
 public void onClick(View v) {
  if(v == sendButton){
  Intent intent = new Intent(this,sms_sending.class);
  intent.putExtra("com.test.intArray",checked);
 
  startActivity(intent);   
}
  if(v == recieveButton){
  Intent intent = new Intent(this,sms_recieving.class);
    }
 
  /*Map<String, String>map=new HashMap<String,String>();
  for(int x=1;x<=16;x++){
  map.put("chk" +i, new String());
   if (v==map.get("chk"+i)){
   checked[x-1]=x;
 
  }*/
  }
 }
}

package com.test.smssending;
public class sms_sending extends Activity  {
     private Intent intentService;
 
    String number = "5556" ;
    StringBuilder msg = new StringBuilder(160);
    int i = 0;
    int[] temp = new int[2];
    public static final String LOG_TAG = "debug";
 
    public void onCreate(Bundle savedInstanceState)  {
         super.onCreate(savedInstanceState);
         msg.append("query:");
         TextView tv = new TextView(this);
         tv.setText("send");
         setContentView(R.layout.sending);
         Intent i = this.getIntent();
         temp = i.getIntArrayExtra("com.test.intArray");
         if(temp[0]==1){
         msg.append("1");
         }
         if(temp[1]==1){
         msg.append("2");
         }
 
         if(msg.toString()!="query:"){
 
         sendSMS(number,msg.toString());}
 
 
 /*     intent.setClass(this, main.class);
      finish();*/
      }
 
 
   private void sendSMS(String number, String message){
 
 PendingIntent pi = PendingIntent.getActivity(this, 0, new Intent(this,sms_sending.class), 0);   
    SmsManager sms = SmsManager.getDefault();
    sms.sendTextMessage(number, null, message, pi, null);
   }
public IBinder onBind(Intent intent) {
 // TODO Auto-generated method stub
 
 return null;
}
}

if (!msg.toString().equals("query:")) {
                sendSMS(number,msg.toString()); }