blocks|key|259417|text|public+class+SmsListener+extends+BroadcastReceiver{

++++private+SharedPreferences+preferences;

++++@Override
++++public+void+onReceive(Context+context,+Intent+intent)+{
++++++++//+TODO+Auto-generated+method+stub

++++++++if(intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")){
++++++++++++Bundle+bundle+=+intent.getExtras();+++++++++++//---get+the+SMS+message+passed+in---
++++++++++++SmsMessage[]+msgs+=+null;
++++++++++++String+msg_from;
++++++++++++if+(bundle+!=+null){
++++++++++++++++//---retrieve+the+SMS+message+received---
++++++++++++++++try{
++++++++++++++++++++Object[]+pdus+=+(Object[])+bundle.get("pdus");
++++++++++++++++++++msgs+=+new+SmsMessage[pdus.length];
++++++++++++++++++++for(int+i=0;+i<msgs.length;+i%2B%2B){
++++++++++++++++++++++++msgs[i]+=+SmsMessage.createFromPdu((byte[])pdus[i]);
++++++++++++++++++++++++msg_from+=+msgs[i].getOriginatingAddress();
++++++++++++++++++++++++String+msgBody+=+msgs[i].getMessageBody();
++++++++++++++++++++}
++++++++++++++++}catch(Exception+e){
//++++++++++++++++++++++++++++Log.d("Exception+caught",e.getMessage());
++++++++++++++++}
++++++++++++}
++++++++}
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|259418|注意:在清单文件中添加BroadcastReceiver-|unstyled|259419|<receiver+android:name=".listener.SmsListener">
++++<intent-filter>
++++++++<action+android:name="android.provider.Telephony.SMS_RECEIVED"+/>
++++</intent-filter>
</receiver>|259420|添加此权限：|259421|<uses-permission+android:name="android.permission.RECEIVE_SMS"+/>|259422|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|P|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$B|C]]|$1|M|3|-4|5|F|7|T|8|@]|9|@]|A|$]]]|N|$]]

<pre><code>public class SmsListener extends BroadcastReceiver{

 private SharedPreferences preferences;

 @Override
 public void onReceive(Context context, Intent intent) {
 // TODO Auto-generated method stub

 if(intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")){
 Bundle bundle = intent.getExtras(); //---get the SMS message passed in---
 SmsMessage[] msgs = null;
 String msg_from;
 if (bundle != null){
 //---retrieve the SMS message received---
 try{
 Object[] pdus = (Object[]) bundle.get("pdus");
 msgs = new SmsMessage[pdus.length];
 for(int i=0; i&lt;msgs.length; i++){
 msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
 msg_from = msgs[i].getOriginatingAddress();
 String msgBody = msgs[i].getMessageBody();
 }
 }catch(Exception e){
// Log.d("Exception caught",e.getMessage());
 }
 }
 }
 }
}
</code></pre>

Note: In your manifest file add the BroadcastReceiver-

<pre><code>&lt;receiver android:name=".listener.SmsListener"&gt;
 &lt;intent-filter&gt;
 &lt;action android:name="android.provider.Telephony.SMS_RECEIVED" /&gt;
 &lt;/intent-filter&gt;
&lt;/receiver&gt;
</code></pre>

Add this permission:

<pre><code>&lt;uses-permission android:name="android.permission.RECEIVE_SMS" /&gt;
</code></pre>

blocks|key|2944397|text|请注意，在某些设备上，如果没有android:priority="1000"+in+intent+filter，您的代码将无法工作：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2944398|<receiver+android:name=".listener.SmsListener">
++++<intent-filter+android:priority="1000">
++++++++<action+android:name="android.provider.Telephony.SMS_RECEIVED"+/>
++++</intent-filter>
</receiver>|code-block|syntax|javascript|2944399|下面是一些优化：|2944400|public+class+SmsListener+extends+BroadcastReceiver{

++++@Override
++++public+void+onReceive(Context+context,+Intent+intent)+{
++++++++if+(Telephony.Sms.Intents.SMS_RECEIVED_ACTION.equals(intent.getAction()))+{
++++++++++++for+(SmsMessage+smsMessage+:+Telephony.Sms.Intents.getMessagesFromIntent(intent))+{
++++++++++++++++String+messageBody+=+smsMessage.getMessageBody();
++++++++++++}
++++++++}
++++}
}|2944401|备注：|2944402|值必须为整数，如"100“。数字越高，优先级越高。默认值为0。该值必须大于-1000且小于1000。|2944403|Here's+a+link.|2944404|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/guide/topics/manifest/intent-filter-element.html^0|F|N|0|0|0|0|0|2|0|0|0|E|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|16|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|17|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|18|8|@$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|6|7|1B|8|@]|D|@]|E|$]]|$1|S|3|T|5|6|7|1C|8|@]|D|@$9|1D|A|1E|1|1F]]|E|$]]|$1|U|3|-4|5|6|7|1G|8|@]|D|@]|E|$]]]|V|$W|$5|X|Y|Z|E|$10|11]]]]

Note that on some devices your code wont work without android:priority="1000" in intent filter:

<pre><code>&lt;receiver android:name=".listener.SmsListener"&gt;
 &lt;intent-filter android:priority="1000"&gt;
 &lt;action android:name="android.provider.Telephony.SMS_RECEIVED" /&gt;
 &lt;/intent-filter&gt;
&lt;/receiver&gt;
</code></pre>

And here is some optimizations:

<pre><code>public class SmsListener extends BroadcastReceiver{

 @Override
 public void onReceive(Context context, Intent intent) {
 if (Telephony.Sms.Intents.SMS_RECEIVED_ACTION.equals(intent.getAction())) {
 for (SmsMessage smsMessage : Telephony.Sms.Intents.getMessagesFromIntent(intent)) {
 String messageBody = smsMessage.getMessageBody();
 }
 }
 }
}
</code></pre>

Note: 
The value must be an integer, such as "100". Higher numbers have a higher priority. The default value is 0. The value must be greater than -1000 and less than 1000.

<a href="https://developer.android.com/guide/topics/manifest/intent-filter-element.html">Here's a link.</a>

blocks|key|259498|text|@Mike+M.和我发现了一个被接受的答案的问题(参见我们的评论)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|259499|基本上，如果我们不是每次都连接多部分消息，那么通过for循环是没有意义的：|259500|for+(int+i+=+0;+i+<+msgs.length;+i%2B%2B)+{
++++msgs[i]+=+SmsMessage.createFromPdu((byte[])pdus[i]);
++++msg_from+=+msgs[i].getOriginatingAddress();
++++String+msgBody+=+msgs[i].getMessageBody();
}|code-block|syntax|javascript|259501|请注意，我们只是将msgBody设置为消息的各个部分的字符串值，而不管我们在哪个索引上，这使得遍历SMS消息的不同部分的整个点变得无用，因为它将被设置为最后一个索引值。相反，我们应该使用%2B=，或者像Mike提到的那样，使用StringBuilder|offset|length|style|CODE|259502|总之，我的接收代码是这样的：|BOLD|259503|if+(myBundle+!=+null)+{
++++Object[]+pdus+=+(Object[])+myBundle.get("pdus");+//+pdus+is+key+for+SMS+in+bundle

++++//Object+[]+pdus+now+contains+array+of+bytes
++++messages+=+new+SmsMessage[pdus.length];
++++for+(int+i+=+0;+i+<+messages.length;+i%2B%2B)+{
+++++++++messages[i]+=+SmsMessage.createFromPdu((byte[])+pdus[i]);+//Returns+one+message,+in+array+because+multipart+message+due+to+sms+max+char
+++++++++Message+%2B=+messages[i].getMessageBody();+//+Using+%2B=,+because+need+to+add+multipart+from+before+also
++++}

++++contactNumber+=+messages[0].getOriginatingAddress();+//This+could+also+be+inside+the+loop,+but+there+is+no+need
}|259504|只是把这个答案放在那里，以防其他人也有同样的困惑。|259505|entityMap^0|0|0|0|9|7|2L|2|33|D|0|5|9|0|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Z|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|10|8|@$K|11|L|12|M|N]|$K|13|L|14|M|N]|$K|15|L|16|M|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|17|8|@$K|18|L|19|M|Q]]|9|@]|A|$]]|$1|R|3|S|5|F|7|1A|8|@]|9|@]|A|$G|H]]|$1|T|3|U|5|6|7|1B|8|@]|9|@]|A|$]]|$1|V|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]]|W|$]]

@Mike M. and I found an issue with the accepted answer (see our comments):

Basically, there is no point in going through the for loop if we are not concatenating the multipart message each time:

<pre><code>for (int i = 0; i &lt; msgs.length; i++) {
 msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
 msg_from = msgs[i].getOriginatingAddress();
 String msgBody = msgs[i].getMessageBody();
}
</code></pre>

Notice that we just set <code>msgBody</code> to the string value of the respective part of the message no matter what index we are on, which makes the entire point of looping through the different parts of the SMS message useless, since it will just be set to the very last index value. Instead we should use <code>+=</code>, or as Mike noted, <code>StringBuilder</code>:

All in all, here is what my SMS receiving code looks like:

<pre><code>if (myBundle != null) {
 Object[] pdus = (Object[]) myBundle.get("pdus"); // pdus is key for SMS in bundle

 //Object [] pdus now contains array of bytes
 messages = new SmsMessage[pdus.length];
 for (int i = 0; i &lt; messages.length; i++) {
 messages[i] = SmsMessage.createFromPdu((byte[]) pdus[i]); //Returns one message, in array because multipart message due to sms max char
 Message += messages[i].getMessageBody(); // Using +=, because need to add multipart from before also
 }

 contactNumber = messages[0].getOriginatingAddress(); //This could also be inside the loop, but there is no need
}
</code></pre>

Just putting this answer out there in case anyone else has the same confusion.

blocks|key|2944532|text|这就是我用的！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2944533|public+class+SMSListener+extends+BroadcastReceiver+{

++++//+Get+the+object+of+SmsManager
++++final+SmsManager+sms+=+SmsManager.getDefault();
String+mobile,body;

++++public+void+onReceive(Context+context,+Intent+intent)+{

++++++++//+Retrieves+a+map+of+extended+data+from+the+intent.
++++++++final+Bundle+bundle+=+intent.getExtras();

++++++++try+{

++++++++++++if+(bundle+!=+null)+{

++++++++++++++++final+Object[]+pdusObj+=+(Object[])+bundle.get("pdus");

++++++++++++++++for+(int+i+=+0;+i+<+pdusObj.length;+i%2B%2B)+{

++++++++++++++++++++SmsMessage+currentMessage+=+SmsMessage.createFromPdu((byte[])+pdusObj[i]);
++++++++++++++++++++String+phoneNumber+=+currentMessage.getDisplayOriginatingAddress();

++++++++++++++++++++String+senderNum+=+phoneNumber;
++++++++++++++++++++String+message+=+currentMessage.getDisplayMessageBody();
+++++++++++++++++++++mobile=senderNum.replaceAll("\\s","");
+++++++++++++++++++++body=message.replaceAll("\\s","%2B");


++++++++++++++++++++Log.i("SmsReceiver",+"senderNum:+"%2B+senderNum+%2B+";+message:+"+%2B+body);


++++++++++++++++++++//+Show+Alert
++++++++++++++++++++int+duration+=+Toast.LENGTH_LONG;
++++++++++++++++++++Toast+toast+=+Toast.makeText(context,
++++++++++++++++++++++++++++"senderNum:+"%2B+mobile%2B+",+message:+"+%2B+message,+duration);
++++++++++++++++++++toast.show();

++++++++++++++++}+//+end+for+loop
++++++++++++}+//+bundle+is+null

++++++++}+catch+(Exception+e)+{
++++++++++++Log.e("SmsReceiver",+"Exception+smsReceiver"+%2Be);

++++++++}
++++}
}|code-block|syntax|javascript|2944534|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This is what i used! 

<pre><code>public class SMSListener extends BroadcastReceiver {

 // Get the object of SmsManager
 final SmsManager sms = SmsManager.getDefault();
String mobile,body;

 public void onReceive(Context context, Intent intent) {

 // Retrieves a map of extended data from the intent.
 final Bundle bundle = intent.getExtras();

 try {

 if (bundle != null) {

 final Object[] pdusObj = (Object[]) bundle.get("pdus");

 for (int i = 0; i &lt; pdusObj.length; i++) {

 SmsMessage currentMessage = SmsMessage.createFromPdu((byte[]) pdusObj[i]);
 String phoneNumber = currentMessage.getDisplayOriginatingAddress();

 String senderNum = phoneNumber;
 String message = currentMessage.getDisplayMessageBody();
 mobile=senderNum.replaceAll("\\s","");
 body=message.replaceAll("\\s","+");


 Log.i("SmsReceiver", "senderNum: "+ senderNum + "; message: " + body);


 // Show Alert
 int duration = Toast.LENGTH_LONG;
 Toast toast = Toast.makeText(context,
 "senderNum: "+ mobile+ ", message: " + message, duration);
 toast.show();

 } // end for loop
 } // bundle is null

 } catch (Exception e) {
 Log.e("SmsReceiver", "Exception smsReceiver" +e);

 }
 }
}
</code></pre>

blocks|key|255506|text|如果您想在打开的活动上处理意图，您可以使用PendintIntent+(完成以下步骤)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|255507|public+class+SMSReciver+extends+BroadcastReceiver+{
++++@Override
++++public+void+onReceive(Context+context,+Intent+intent)+{
++++++++final+Bundle+bundle+=+intent.getExtras();
++++++++try+{
++++++++++++if+(bundle+!=+null)+{
++++++++++++++++final+Object[]+pdusObj+=+(Object[])+bundle.get("pdus");
++++++++++++++++for+(int+i+=+0;+i+<+pdusObj.length;+i%2B%2B)+{
++++++++++++++++++++SmsMessage+currentMessage+=+SmsMessage.createFromPdu((byte[])+pdusObj[i]);
++++++++++++++++++++String+phoneNumber+=+currentMessage.getDisplayOriginatingAddress();
++++++++++++++++++++String+senderNum+=+phoneNumber;
++++++++++++++++++++String+message+=+currentMessage.getDisplayMessageBody();
++++++++++++++++++++try+{
++++++++++++++++++++++++if+(senderNum.contains("MOB_NUMBER"))+{
++++++++++++++++++++++++++++Toast.makeText(context,"",Toast.LENGTH_SHORT).show();

++++++++++++++++++++++++++++Intent+intentCall+=+new+Intent(context,+MainActivity.class);
++++++++++++++++++++++++++++intentCall.putExtra("message",+currentMessage.getMessageBody());

++++++++++++++++++++++++++++PendingIntent+pendingIntent=+PendingIntent.getActivity(context,+0,+intentCall,+PendingIntent.FLAG_UPDATE_CURRENT);
++++++++++++++++++++++++++++pendingIntent.send();
++++++++++++++++++++++++}
++++++++++++++++++++}+catch+(Exception+e)+{
++++++++++++++++++++}
++++++++++++++++}
++++++++++++}
++++++++}+catch+(Exception+e)+{
++++++++}
++++}
}+|code-block|syntax|javascript|255508|清单：|255509|<activity+android:name=".MainActivity"
++++++++++++android:launchMode="singleTask"/>
<receiver+android:name=".SMSReciver">
++++++++++++<intent-filter+android:priority="1000">
++++++++++++++++<action+android:name="android.provider.Telephony.SMS_RECEIVED"/>
++++++++++++</intent-filter>
++++++++</receiver>|255510|onNewIntent：|255511|+@Override
+++++++++protected+void+onNewIntent(Intent+intent)+{
++++++++++++++++super.onNewIntent(intent);
++++++++++++++++Toast.makeText(this,+"onNewIntent",+Toast.LENGTH_SHORT).show();

++++++++++++++++onSMSReceived(intent.getStringExtra("message"));

++++++++++++}|255512|权限：|255513|<uses-permission+android:name="android.permission.RECEIVE_SMS"+/>
<uses-permission+android:name="android.permission.READ_SMS"+/>
<uses-permission+android:name="android.permission.SEND_SMS"+/>|255514|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

In case you want to handle intent on opened activity, you can use PendintIntent (Complete steps below):

<pre><code>public class SMSReciver extends BroadcastReceiver {
 @Override
 public void onReceive(Context context, Intent intent) {
 final Bundle bundle = intent.getExtras();
 try {
 if (bundle != null) {
 final Object[] pdusObj = (Object[]) bundle.get("pdus");
 for (int i = 0; i &lt; pdusObj.length; i++) {
 SmsMessage currentMessage = SmsMessage.createFromPdu((byte[]) pdusObj[i]);
 String phoneNumber = currentMessage.getDisplayOriginatingAddress();
 String senderNum = phoneNumber;
 String message = currentMessage.getDisplayMessageBody();
 try {
 if (senderNum.contains("MOB_NUMBER")) {
 Toast.makeText(context,"",Toast.LENGTH_SHORT).show();

 Intent intentCall = new Intent(context, MainActivity.class);
 intentCall.putExtra("message", currentMessage.getMessageBody());

 PendingIntent pendingIntent= PendingIntent.getActivity(context, 0, intentCall, PendingIntent.FLAG_UPDATE_CURRENT);
 pendingIntent.send();
 }
 } catch (Exception e) {
 }
 }
 }
 } catch (Exception e) {
 }
 }
} 
</code></pre>

manifest:

<pre><code>&lt;activity android:name=".MainActivity"
 android:launchMode="singleTask"/&gt;
&lt;receiver android:name=".SMSReciver"&gt;
 &lt;intent-filter android:priority="1000"&gt;
 &lt;action android:name="android.provider.Telephony.SMS_RECEIVED"/&gt;
 &lt;/intent-filter&gt;
 &lt;/receiver&gt;
</code></pre>

onNewIntent:

<pre><code> @Override
 protected void onNewIntent(Intent intent) {
 super.onNewIntent(intent);
 Toast.makeText(this, "onNewIntent", Toast.LENGTH_SHORT).show();

 onSMSReceived(intent.getStringExtra("message"));

 }
</code></pre>

permissions:

<pre><code>&lt;uses-permission android:name="android.permission.RECEIVE_SMS" /&gt;
&lt;uses-permission android:name="android.permission.READ_SMS" /&gt;
&lt;uses-permission android:name="android.permission.SEND_SMS" /&gt;
</code></pre>

blocks|key|3158657|text|如果有人提到如何在Xamarin+Android上做同样的功能(使用收到的短信读取OTP+)，就像我一样：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3158658|3158659|将此代码添加到AndroidManifest.xml文件中：|ordered-list-item|3158660|3158661|3158662|然后在你的安卓项目中创建你的BroadcastReveiver类。|unordered-list-item|3158663|3158664|BroadcastReceiver(Enabled+=真)IntentFilter(new[]{+"android.provider.Telephony.SMS_RECEIVED“}，Priority+=+(int)IntentFilterPriority.HighPriority)]公共类BroadcastReveiverOTP+:+BroadcastReceiver+{公共静态只读字符串INTENT_ACTION+=+"android.provider.Telephony.SMS_RECEIVED"；受保护字符串message，address+=+string.Empty；(Java.Lang.Object[])intent.Extras.Get("pdus")；override+void+OnReceive(Context+context，intent)+{+if+(intent.HasExtra("pdus"))+{+var+smsArray+=+public+foreach+(smsArray中的var+item+){var+sms+=+SmsMessage.CreateFromPdu((byte[])item)；地址=+sms.OriginatingAddress；if+(address.Equals("NotifyDEMO"))+{+message+=+sms.MessageBody；string[]引脚=+message.Split(‘')；if+(!string.IsNullOrWhiteSpace(pin))+{+//注意:这里我使用MessagingCenter将接收到的动态口令传递给可移植项目。这样我就可以在相关的输入字段中显示OTP。MessagingCenter.Send(+this，MessengerKeys.OnBroadcastReceived，MessagingCenter.Send|3158665|在安卓项目的私有类中注册这个BroadcastReceiver类:公共类MainActivity+:+global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity+{+//初始化你的类私有BroadcastReveiverOTP+_receiver+=+MainActivity+BroadcastReveiverOTP+()；protected+override+void+OnCreate(捆绑包){base.OnCreate(捆绑包)；global：：Xamarin.Forms.Forms.Init(此捆绑包)；LoadApplication(新应用程序())；//注册您的接收方:+RegisterReceiver(_receiver，新IntentFilter("android.provider.Telephony.SMS_RECEIVED"))；}+}|3158666|3158667|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|T|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|U|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|V|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|W|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|X|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|Z|8|@]|9|@]|A|$]]|$1|N|3|O|5|J|7|10|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|11|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|R|$]]

If someone referring how to do the same feature (reading OTP using received SMS) on Xamarin Android like me : 

<ol>
<li>Add this code to your AndroidManifest.xml file :

<pre><code>&lt;receiver android:name=".listener.BroadcastReveiverOTP"&gt;
&lt;intent-filter&gt;
 &lt;action android:name="android.provider.Telephony.SMS_RECEIVED" /&gt;
&lt;/intent-filter&gt;
&lt;/receiver&gt;
&lt;uses-permission android:name="android.permission.RECEIVE_SMS" /&gt;
&lt;uses-permission android:name="android.permission.BROADCAST_SMS" /&gt;
&lt;uses-permission android:name="android.permission.READ_SMS" /&gt;
</code></pre></li>
<li>Then create your BroadcastReveiver class in your Android Project. 

<pre><code>[BroadcastReceiver(Enabled = true)] [IntentFilter(new[] { "android.provider.Telephony.SMS_RECEIVED" }, Priority = (int)IntentFilterPriority.HighPriority)] 
public class BroadcastReveiverOTP : BroadcastReceiver {
 public static readonly string INTENT_ACTION = "android.provider.Telephony.SMS_RECEIVED";

 protected string message, address = string.Empty;

 public override void OnReceive(Context context, Intent intent)
 {
 if (intent.HasExtra("pdus"))
 {
 var smsArray = (Java.Lang.Object[])intent.Extras.Get("pdus");
 foreach (var item in smsArray)
 {
 var sms = SmsMessage.CreateFromPdu((byte[])item);
 address = sms.OriginatingAddress;
 if (address.Equals("NotifyDEMO"))
 {
 message = sms.MessageBody;
 string[] pin = message.Split(' ');
 if (!string.IsNullOrWhiteSpace(pin[0]))
 { 
 // NOTE : Here I'm passing received OTP to Portable Project using MessagingCenter. So I can display the OTP in the relevant entry field.
 MessagingCenter.Send&lt;object, string&gt;(this,MessengerKeys.OnBroadcastReceived, pin[0]);
 }
 }
 }
 }
 }
}
</code></pre></li>
<li>Register this BroadcastReceiver class in your MainActivity class on Android Project: 

<pre><code>public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity {

 // Initialize your class
 private BroadcastReveiverOTP _receiver = new BroadcastReveiverOTP ();

 protected override void OnCreate(Bundle bundle) { 
 base.OnCreate(bundle);

 global::Xamarin.Forms.Forms.Init(this, bundle);
 LoadApplication(new App());

 // Register your receiver : RegisterReceiver(_receiver, new IntentFilter("android.provider.Telephony.SMS_RECEIVED"));

 }
}
</code></pre></li>
</ol>

blocks|key|255597|text|Kotlin上的广播实现：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|255598|+private+class+SmsListener+:+BroadcastReceiver()+{
++++override+fun+onReceive(context:+Context?,+intent:+Intent?)+{
++++++++Log.d(TAG,+"SMS+Received!")

++++++++val+txt+=+getTextFromSms(intent?.extras)
++++++++Log.d(TAG,+"message="+%2B+txt)
++++}

++++private+fun+getTextFromSms(extras:+Bundle?):+String+{
++++++++val+pdus+=+extras?.get("pdus")+as+Array<*>
++++++++val+format+=+extras.getString("format")
++++++++var+txt+=+""
++++++++for+(pdu+in+pdus)+{
++++++++++++val+smsmsg+=+getSmsMsg(pdu+as+ByteArray?,+format)
++++++++++++val+submsg+=+smsmsg?.displayMessageBody
++++++++++++submsg?.let+{+txt+=+"$txt$it"+}
++++++++}
++++++++return+txt
++++}

++++private+fun+getSmsMsg(pdu:+ByteArray?,+format:+String?):+SmsMessage?+{
++++++++return+when+{
++++++++++++SDK_INT+>=+Build.VERSION_CODES.M+->+SmsMessage.createFromPdu(pdu,+format)
++++++++++++else+->+SmsMessage.createFromPdu(pdu)
++++++++}
++++}

++++companion+object+{
++++++++private+val+TAG+=+SmsListener::class.java.simpleName
++++}
}|code-block|syntax|javascript|255599|注意:在清单文件中添加BroadcastReceiver-|255600|<receiver+android:name=".listener.SmsListener">
++++<intent-filter>
++++++++<action+android:name="android.provider.Telephony.SMS_RECEIVED"+/>
++++</intent-filter>
</receiver>|255601|添加此权限：|255602|<uses-permission+android:name="android.permission.RECEIVE_SMS"+/>|255603|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

broadcast implementation on Kotlin:

<pre><code> private class SmsListener : BroadcastReceiver() {
 override fun onReceive(context: Context?, intent: Intent?) {
 Log.d(TAG, "SMS Received!")

 val txt = getTextFromSms(intent?.extras)
 Log.d(TAG, "message=" + txt)
 }

 private fun getTextFromSms(extras: Bundle?): String {
 val pdus = extras?.get("pdus") as Array&lt;*&gt;
 val format = extras.getString("format")
 var txt = ""
 for (pdu in pdus) {
 val smsmsg = getSmsMsg(pdu as ByteArray?, format)
 val submsg = smsmsg?.displayMessageBody
 submsg?.let { txt = "$txt$it" }
 }
 return txt
 }

 private fun getSmsMsg(pdu: ByteArray?, format: String?): SmsMessage? {
 return when {
 SDK_INT &gt;= Build.VERSION_CODES.M -&gt; SmsMessage.createFromPdu(pdu, format)
 else -&gt; SmsMessage.createFromPdu(pdu)
 }
 }

 companion object {
 private val TAG = SmsListener::class.java.simpleName
 }
}
</code></pre>

Note: In your manifest file add the BroadcastReceiver-

<pre><code>&lt;receiver android:name=".listener.SmsListener"&gt;
 &lt;intent-filter&gt;
 &lt;action android:name="android.provider.Telephony.SMS_RECEIVED" /&gt;
 &lt;/intent-filter&gt;
&lt;/receiver&gt;
</code></pre>

Add this permission:

<pre><code>&lt;uses-permission android:name="android.permission.RECEIVE_SMS" /&gt;
</code></pre>

blocks|key|255611|text|感谢@Vineet+Shukla+(公认的答案)和@Ruchir+Baronia+(在公认的答案中找到了问题)，以下是Kotlin版本：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|255612|添加权限：|255613|<uses-permission+android:name="android.permission.RECEIVE_SMS"+/>|code-block|syntax|javascript|255614|在AndroidManifest中注册BroadcastReceiver：|255615|<receiver
++++android:name=".receiver.SmsReceiver"
++++android:enabled="true"
++++android:exported="true">
++++<intent-filter+android:priority="2332412">
++++++++<action+android:name="android.provider.Telephony.SMS_RECEIVED"+/>
++++</intent-filter>
</receiver>|255616|添加BroadcastReceiver的实现：|255617|class+SmsReceiver+:+BroadcastReceiver()+{
++++private+var+mLastTimeReceived+=+System.currentTimeMillis()

++++override+fun+onReceive(p0:+Context?,+intent:+Intent?)+{
++++++++val+currentTimeMillis+=+System.currentTimeMillis()
++++++++if+(currentTimeMillis+-+mLastTimeReceived+>+200)+{
++++++++++++mLastTimeReceived+=+currentTimeMillis

++++++++++++val+pdus:+Array<*>
++++++++++++val+msgs:+Array<SmsMessage?>
++++++++++++var+msgFrom:+String?
++++++++++++var+msgText:+String?
++++++++++++val+strBuilder+=+StringBuilder()
++++++++++++intent?.extras?.let+{
++++++++++++++++try+{
++++++++++++++++++++pdus+=+it.get("pdus")+as+Array<*>
++++++++++++++++++++msgs+=+arrayOfNulls(pdus.size)
++++++++++++++++++++for+(i+in+msgs.indices)+{
++++++++++++++++++++++++msgs[i]+=+SmsMessage.createFromPdu(pdus[i]+as+ByteArray)
++++++++++++++++++++++++strBuilder.append(msgs[i]?.messageBody)
++++++++++++++++++++}

++++++++++++++++++++msgText+=+strBuilder.toString()
++++++++++++++++++++msgFrom+=+msgs[0]?.originatingAddress

++++++++++++++++++++if+(!msgFrom.isNullOrBlank()+&&+!msgText.isNullOrBlank())+{
++++++++++++++++++++++++//
++++++++++++++++++++++++//+Do+some+thing+here
++++++++++++++++++++++++//
++++++++++++++++++++}
++++++++++++++++}+catch+(e:+Exception)+{
++++++++++++++++}
++++++++++++}
++++++++}
++++}
}|255618|有时事件会触发两次，因此我添加了mLastTimeReceived+=+System.currentTimeMillis()|255619|entityMap^0|1N|6|0|0|0|0|0|0|0|G|1A|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|12|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|13|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|14|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|15|8|@]|D|@]|E|$]]|$1|S|3|T|5|J|7|16|8|@]|D|@]|E|$K|L]]|$1|U|3|V|5|6|7|17|8|@$9|18|A|19|B|C]]|D|@]|E|$]]|$1|W|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]]|X|$]]

Thank to @Vineet Shukla (the accepted answer) and @Ruchir Baronia (found the issue in the accepted answer), below is the <code>Kotlin</code> version:

Add permission:

<pre><code>&lt;uses-permission android:name="android.permission.RECEIVE_SMS" /&gt;
</code></pre>

Register BroadcastReceiver in AndroidManifest:

<pre><code>&lt;receiver
 android:name=".receiver.SmsReceiver"
 android:enabled="true"
 android:exported="true"&gt;
 &lt;intent-filter android:priority="2332412"&gt;
 &lt;action android:name="android.provider.Telephony.SMS_RECEIVED" /&gt;
 &lt;/intent-filter&gt;
&lt;/receiver&gt;
</code></pre>

Add implementation for BroadcastReceiver:

<pre><code>class SmsReceiver : BroadcastReceiver() {
 private var mLastTimeReceived = System.currentTimeMillis()

 override fun onReceive(p0: Context?, intent: Intent?) {
 val currentTimeMillis = System.currentTimeMillis()
 if (currentTimeMillis - mLastTimeReceived &gt; 200) {
 mLastTimeReceived = currentTimeMillis

 val pdus: Array&lt;*&gt;
 val msgs: Array&lt;SmsMessage?&gt;
 var msgFrom: String?
 var msgText: String?
 val strBuilder = StringBuilder()
 intent?.extras?.let {
 try {
 pdus = it.get("pdus") as Array&lt;*&gt;
 msgs = arrayOfNulls(pdus.size)
 for (i in msgs.indices) {
 msgs[i] = SmsMessage.createFromPdu(pdus[i] as ByteArray)
 strBuilder.append(msgs[i]?.messageBody)
 }

 msgText = strBuilder.toString()
 msgFrom = msgs[0]?.originatingAddress

 if (!msgFrom.isNullOrBlank() &amp;&amp; !msgText.isNullOrBlank()) {
 //
 // Do some thing here
 //
 }
 } catch (e: Exception) {
 }
 }
 }
 }
}
</code></pre>

Sometime event fires twice so I add <code>mLastTimeReceived = System.currentTimeMillis()</code>

blocks|key|2944943|text|被接受的答案是正确的，并且适用于旧版本的Android，其中Android操作系统在安装应用程序时要求权限，但在较新版本的Android上，它不会立即起作用，因为当应用程序需要该功能时，较新的Android操作系统会在运行时要求权限。因此，为了在较新版本的Android上使用accepted中提到的技术接收SMS，程序员还必须实现在运行时检查和询问用户权限的代码。在这种情况下，可以在app的第一个活动的onCreate()中实现权限检查功能/代码。只需在第一个活动中复制并粘贴以下两个方法，并在onCreate()的末尾调用checkForSmsReceivePermissions()方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2944944|++++void+checkForSmsReceivePermissions(){
++++//+Check+if+App+already+has+permissions+for+receiving+SMS
++++if(ContextCompat.checkSelfPermission(getBaseContext(),+"android.permission.RECEIVE_SMS")+==+PackageManager.PERMISSION_GRANTED)+{
++++++++//+App+has+permissions+to+listen+incoming+SMS+messages
++++++++Log.d("adnan",+"checkForSmsReceivePermissions:+Allowed");
++++}+else+{
++++++++//+App+don't+have+permissions+to+listen+incoming+SMS+messages
++++++++Log.d("adnan",+"checkForSmsReceivePermissions:+Denied");

++++++++//+Request+permissions+from+user+
++++++++ActivityCompat.requestPermissions(this,+new+String[]+{Manifest.permission.RECEIVE_SMS},+43391);
++++}
}

@Override
public+void+onRequestPermissionsResult(int+requestCode,+@NonNull+String[]+permissions,+@NonNull+int[]+grantResults)+{
++++super.onRequestPermissionsResult(requestCode,+permissions,+grantResults);
++++if(requestCode+==+43391){
++++++++if(grantResults.length>0+&&+grantResults[0]+==+PackageManager.PERMISSION_GRANTED){
++++++++++++Log.d("adnan",+"Sms+Receive+Permissions+granted");
++++++++}+else+{
++++++++++++Log.d("adnan",+"Sms+Receive+Permissions+denied");
++++++++}
++++}
}|code-block|syntax|javascript|2944945|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The accepted answer is correct and works on older versions of Android where Android OS asks for permissions at the app install, However on newer versions Android it doesn't work straight away because newer Android OS asks for permissions during runtime when the app requires that feature. Therefore in order to receive SMS on newer versions of Android using technique mentioned in accepted answer programmer must also implement code that will check and ask for permissions from user during runtime. In this case permissions checking functionality/code can be implemented in onCreate() of app's first activity. Just copy and paste following two methods in your first activity and call checkForSmsReceivePermissions() method at the end of onCreate().

<pre><code> void checkForSmsReceivePermissions(){
 // Check if App already has permissions for receiving SMS
 if(ContextCompat.checkSelfPermission(getBaseContext(), "android.permission.RECEIVE_SMS") == PackageManager.PERMISSION_GRANTED) {
 // App has permissions to listen incoming SMS messages
 Log.d("adnan", "checkForSmsReceivePermissions: Allowed");
 } else {
 // App don't have permissions to listen incoming SMS messages
 Log.d("adnan", "checkForSmsReceivePermissions: Denied");

 // Request permissions from user 
 ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.RECEIVE_SMS}, 43391);
 }
}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
 super.onRequestPermissionsResult(requestCode, permissions, grantResults);
 if(requestCode == 43391){
 if(grantResults.length&gt;0 &amp;&amp; grantResults[0] == PackageManager.PERMISSION_GRANTED){
 Log.d("adnan", "Sms Receive Permissions granted");
 } else {
 Log.d("adnan", "Sms Receive Permissions denied");
 }
 }
}
</code></pre>

blocks|key|259667|text|一段时间以来，如果你不是一个默认的android.permission.RECEIVE_SMS应用程序，发布一个具有短信权限的应用程序几乎是不可能的。Google提供了一个新的短信捕捉工具==>+Automatic+SMS+Verification+with+the+SMS+Retriever+API|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|259668|entityMap|0|LINK|mutability|MUTABLE|url|https://developers.google.com/identity/sms-retriever/overview^0|2Q|1H|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Since some time now, it becomes nearly impossible to publish an app with the android.permission.RECEIVE_SMS permission, if you are not a default sms app. Google provide a new tool for SMS catching ==&gt; <a href="https://developers.google.com/identity/sms-retriever/overview" rel="nofollow noreferrer">Automatic SMS Verification with the SMS Retriever API</a>

I am trying to create an application for monitoring incoming SMS messages, and launch a program via incoming SMS, also it should read the content from the SMS.

Workflow:

<ul>
<li>SMS sent to Android device </li>
<li>self executable Application </li>
<li>Read the SMS information</li>
</ul>

Android – Listen For Incoming SMS Messages

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我试图创建一个应用程序来监测传入的短信，并通过传入的短信推出一个程序，它也应该从短信读取的内容。工作流程：短信发送至安卓设备自执行应用程序读取短信信息

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