每一部手机都具有短信接收和发送功能，下面我们通过代码来实现接收和发送短信功能。
一、接收短信
1、创建内部广播接收器类，接收系统发出的短信广播
2、从获得的内容中解析出短信发送者和短信内容
3、在Activity中注册广播
4、添加接收短信权限
下面放上具体的代码
activity_main.xml文件用于显示短信发送者号码和显示短信内容
MainActivity.java文件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 < messages.length; i++) {messages[i] = SmsMessage.createFromPdu((byte[]) pdus[i]);}//获取发送方号码String address = messages[0].getOriginatingAddress();
String fullMessage = "";for (SmsMessage message : messages) {//获取短信内容fullMessage += message.getMessageBody();}//截断广播,阻止其继续被Android自带的短信程序接收到abortBroadcast();fromTv.setText(address);contentTv.setText(fullMessage);}}}
注：
注册的广播接收器，一定要在OnDestroy()方法中取消注册。
由于短信广播是有序广播，如果我们不想让Android自带的短信程序接收到短信，就可以设置我们自身接收器的优先级，同时在我们接受完广播后将广播截断，阻止其被Android自带的短信程序接收到。
二、发送短信
1、获取接收者的号码和短信内容
2、获得短信发送管理实例
3、构造PendingIntent启动短信发送状态监控广播
4、调用发送短信函数，传入参数发送短信
5、构造广播接收器内部类监控短信是否发送成功
6、获得广播接收器实例和IntentFilter实例，注册广播接收器
7、在onDestroy()中取消注册的广播接收器
8、在AndroidManifest.xml文件中加入短信发送权限下面放上具体的布局文件和代码
activity_send_msg.xml文件
SendMsgActivity.java文件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);}}
在AndroidManifest.xml文件中加入短信发送权限
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