android(4)(短信发送器)

短信发送器：
public class MainActivity extends Activity implements OnClickListener {

    private EditText etNumber;
    private EditText etContent;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        etNumber = (EditText) findViewById(R.id.et_number);
        etContent = (EditText) findViewById(R.id.et_content);

        Button button = (Button) findViewById(R.id.btn_send);
        button.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        // 号码
        String number = etNumber.getText().toString();
        // 内容
        String content = etContent.getText().toString();

        SmsManager smsManager = SmsManager.getDefault();

        smsManager.sendTextMessage(
                number, // 收件人
                null,   // 短信中心号码
                content, // 内容
                null, 
                null);
    }