Android如何实现接收和发送短信

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public class MainActivity extends AppCompatActivity {
  private TextView fromTv;
  private TextView contentTv;

  private IntentFilter intentFilter;
  private MessageReceiver messageReceiver;

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

    initView();
    getSms();
  }

  private void getSms() {
    intentFilter = new IntentFilter();                 intentFilter.addAction("android.provider.Telephony.SMS_RECEIVED");
    messageReceiver = new MessageReceiver();
    //设置较高的优先级
    intentFilter.setPriority(100);
    registerReceiver(messageReceiver, intentFilter);
  }

  private void initView() {
    fromTv = (TextView) findViewById(R.id.sms_from_txt);
    cOntentTv= (TextView) findViewById(R.id.sms_content_txt);
  }

  @Override
  protected void onDestroy() {
    super.onDestroy();
    unregisterReceiver(messageReceiver);
  }

  class MessageReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
      Bundle bundle = intent.getExtras();
      //提取短信消息
      Object[] pdus = (Object[]) bundle.get("pdus");
      SmsMessage[] messages = new SmsMessage[pdus.length];
      for (int i = 0; i 

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public class SendMsgActivity extends AppCompatActivity implements View.OnClickListener {
  private Context context;
  private EditText toEdit;
  private EditText toContent;
  private IntentFilter sendFilter;
  private SendStatusReceiver sendStatusReceiver;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_send_msg);
    cOntext= this;
    initView();
  }

  private void initView() {
    toEdit = (EditText) findViewById(R.id.to_ed);
    toCOntent= (EditText) findViewById(R.id.to_content);
    //添加发送按钮的点击监听事件
    Button sendMsg = (Button) findViewById(R.id.send_msg);
    sendMsg.setOnClickListener(this);
  }

  @Override
  public void onClick(View view) {
    switch (view.getId()){
      case R.id.send_msg:
        sendMessage();
       break;
      default:
        break;
    }
  }

  private void sendMessage() {
    //获取短信接收者号码
    String to = toEdit.getText().toString();
    //获取发送短信内容
    String cOntent= toContent.getText().toString();
    //获得广播接收器实例和IntentFilter实例
    sendStatusReceiver = new SendStatusReceiver();
    sendFilter = new IntentFilter();
    sendFilter.addAction("SENT_SMS_ACTION");
    //注册广播监听
    registerReceiver(sendStatusReceiver, sendFilter);
    //构造PendingIntent启动短信发送状态监控广播
    Intent sendIntent = new Intent("SENT_SMS_ACTION");
    PendingIntent pi = PendingIntent.getBroadcast(context, 0, sendIntent, 0);
    //获得短信管理实例
    SmsManager smsManager = SmsManager.getDefault();

    //调用发送短信函数，传入参数发送短信(第一、三、四参数依次为接收者号码,短信内容,短信发送状态监控的PendingIntent)
    smsManager.sendTextMessage(to, null, content, pi, null);
  }

  /**
   * 构造广播接收器内部类监控短信是否发送成功
   */
  class SendStatusReceiver extends BroadcastReceiver{

    @Override
    public void onReceive(Context context, Intent intent) {
      if (getResultCode() == RESULT_OK){
        Toast.makeText(context, "successful", Toast.LENGTH_SHORT).show();
      }else{
        Toast.makeText(context, "failed", Toast.LENGTH_SHORT).show();
      }
    }
  }

  @Override
  protected void onDestroy() {
    super.onDestroy();
    //取消注册的广播
    unregisterReceiver(sendStatusReceiver);
  }
}