android 发送短信

public class MessageActivity extends Activity {
	private EditText number;
	private EditText content;
	private Button button;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        number = (EditText) this.findViewById(R.id.number);
        content =  (EditText) this.findViewById(R.id.content);
        button = (Button) this.findViewById(R.id.button);
        
        button.setOnClickListener(ButtonOnClickListener);
    }
    
    private OnClickListener ButtonOnClickListener = new OnClickListener(){
		@Override
		public void onClick(View v) {
			String numberText = number.getText().toString();
			String contentText = content.getText().toString();
			
			SmsManager sms = SmsManager.getDefault();
			ArrayList<String> texts = sms.divideMessage(contentText);
			for(String t : texts){
				sms.sendTextMessage(numberText, null, t, null, null);
			}
			Toast.makeText(getApplicationContext(), R.string.success, Toast.LENGTH_LONG);
		}
    };
}