Contentresolver, get the SMS content

xml、

<?xml version="1.0" encoding="utf-8"
    ?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:text=" Get SMS permission "
        android:onClick="getperssion"/>

</LinearLayout>

java

package com.commerce.myapplication;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;

import android.Manifest;
import android.content.ContentResolver;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.PatternMatcher;
import android.os.PowerManager;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

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

    public void getperssion(View view) {
        ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.READ_SMS},1);

    }
    private void getSms(){
        Uri uri=Uri.parse("content://sms/");
        ContentResolver contentResolver=getContentResolver();
        Cursor cursor=contentResolver.query(uri,new String[]{
  "_id","address","body"},null,null,null);
        if (cursor!=null  && cursor.getCount()>0){
            while (cursor.moveToNext()){
                int _id=cursor.getInt(0);
                String address= cursor.getString(1);
                String body= cursor.getString(2);
                Toast.makeText(MainActivity.this,body, Toast.LENGTH_SHORT).show();
            }
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if(requestCode==1){
            for (int i=0;i<permissions.length;i++){
                if (grantResults[i]== PackageManager.PERMISSION_GRANTED) {
                    Toast.makeText(this, " Permissions obtained successfully ", Toast.LENGTH_SHORT).show();
                    getSms();
                }else {
                    Toast.makeText(this, ""+" jurisdiction "+permissions[i]+" Application failed , Unable to read system SMS ", Toast.LENGTH_SHORT).show();
                }
            }
        }
    }
}

Green an

<uses-permission android:name="android.permission.READ_SMS"/>