我正在开发一个Android应用程序,其中服务器发送OTP并且用户需要在应用程序中输入此OTP,以登录我的应用程序.我想要的是,我的应用程序应该能够自动读取服务器发送的OTP.我怎样才能做到这一点？任何有关这方面的帮助或指导都将受到高度赞赏.

解决方法:

我建议您不要使用任何第三方库从SMS收件箱中自动获取OTP.
如果您对广播接收器及其工作原理有基本的了解,则可以轻松完成此操作.
试试以下方法：

Step 1) Create single interface i.e SmsListner

package com.wnrcorp.reba;
public interface SmsListener{
public void messageReceived(String messageText);}

Step 2) Create single Broadcast Receiver i.e SmsReceiver

package com.wnrcorp.reba;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.SmsMessage;
public class SmsReceiver extends BroadcastReceiver {
private static SmsListener mListener;
Boolean b;
String abcd,xyz;
@Override
public void onReceive(Context context, Intent intent) {
Bundle data  = intent.getExtras();
Object[] pdus = (Object[]) data.get("pdus");
    for(int i=0;i<pdus.length;i++){
        SmsMessage smsMessage = SmsMessage.createFromPdu((byte[]) pdus[i]);
        String sender = smsMessage.getDisplayOriginatingAddress();
       // b=sender.endsWith("WNRCRP");  //Just to fetch otp sent from WNRCRP
        String messageBody = smsMessage.getMessageBody();
       abcd=messageBody.replaceAll("[^0-9]","");   // here abcd contains otp 
        which is in number format
        //Pass on the text to our listener.
        if(b==true) {
            mListener.messageReceived(abcd);  // attach value to interface 
  object
        }
        else
        {
        }
    }
}
public static void bindListener(SmsListener listener) {
    mListener = listener;
}
}

Step 3) Add Listener i.e broadcast receiver in android manifest file

<receiver android:name=".SmsReceiver">    
        <intent-filter>
            <action android:name="android.provider.Telephony.SMS_RECEIVED"/>
        </intent-filter>
</receiver>

并添加权限

< uses-permission android：name =“android.permission.RECEIVE_SMS”/>

Final Step 4) The activity where you going to auto fetch otp when it is received in inbox. In my case I’m fetching otp and setting on edittext field.

public class OtpVerificationActivity extends AppCompatActivity {
EditText ed;
TextView tv;
String otp_generated,contactNo,id1;
GlobalData gd = new GlobalData();
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_otp_verification);
    ed=(EditText)findViewById(R.id.otp);
    tv=(TextView) findViewById(R.id.verify_otp); 
    /*This is important because this will be called every time you receive 
     any sms */            
 SmsReceiver.bindListener(new SmsListener() {
        @Override
        public void messageReceived(String messageText) {
            ed.setText(messageText);     
        }
    });
    tv.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            try
            {
                InputMethodManager imm=
  (InputMethodManager)getSystemService(INPUT_METHOD_SERVICE);                    
  imm.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(),0);
            }
            catch(Exception e)
            {}           
            if (ed.getText().toString().equals(otp_generated))
            {
                Toast.makeText(OtpVerificationActivity.this, "OTP Verified 
       Successfully !", Toast.LENGTH_SHORT).show();           
             }
    });
   }
}

OtpVerificationActivity的布局文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_otp_verification"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.wnrcorp.reba.OtpVerificationActivity">
<android.support.v7.widget.CardView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/firstcard"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    card_view:cardCornerRadius="10dp"
    >
   <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:background="@android:color/white">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="OTP Confirmation"
            android:textSize="18sp"
            android:textStyle="bold"
            android:id="@+id/dialogTitle"
            android:layout_margin="5dp"
            android:layout_gravity="center"
            />
        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/otp"
            android:layout_margin="5dp"
            android:hint="OTP Here"
            />
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Verify"
            android:textSize="18sp"
            android:id="@+id/verify_otp"
            android:gravity="center"
            android:padding="10dp"
            android:layout_gravity="center"
            android:visibility="visible"
            android:layout_margin="5dp"
            android:background="@color/colorPrimary"
            android:textColor="#ffffff"
            />
        </LinearLayout>
        </android.support.v7.widget.CardView>
        </RelativeLayout>

OTP验证活动的屏幕截图,其中您将OTP作为soons获取
收到的消息