Android realizes automatic intercept reading function of SMS Verification code _android

Knowledge Preparation:
1. Observer mode of understanding "The article came later ~ ~"
2.Android's cursor uses "Android Basics"
3. Regular expressions use "Java Basics"
4.Handler use "Android Basics"

Code collation:

Mainactivity.java

Import Android.net.Uri;
Import Android.os.Bundle;
Import Android.os.Handler;
Import Android.os.Message;
Import android.support.v7.app.AppCompatActivity;
Import Android.view.Menu;
Import Android.view.MenuItem;

Import Android.widget.EditText; public class Mainactivity extends appcompatactivity {public static final int msg_receiver_code = 1; private EditText SMS
Et;
      Private Handler Handler = new Handler () {@Override public void Handlemessage (msg) {switch (msg.what) {
        Case msg_receiver_code:string message= (String) msg.obj;
        Smset.settext (message);
        Smset.setselection (Message.length ());
      Break
    Default:break;
}
  }
};

Private Mysmsobserver Mysmsobserver;
  @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);
  Setcontentview (R.layout.activity_main);
  Smset = (edittext) Findviewbyid (R.id.smset);
  Mysmsobserver = new Mysmsobserver (this, handler); Uri Uri=uri.parse ("COntent://sms ");
Getcontentresolver (). Registercontentobserver (Uri,true, mysmsobserver);
  @Override public boolean Oncreateoptionsmenu (Menu menu) {getmenuinflater (). Inflate (R.menu.menu_main, menu);
return true;
  } @Override protected void OnDestroy () {Super.ondestroy ();
Getcontentresolver (). Unregistercontentobserver (Mysmsobserver);

  @Override public boolean onoptionsitemselected (MenuItem item) {int id = item.getitemid ();
  if (id = = r.id.action_settings) {return true;
return super.onoptionsitemselected (item);

 }
}

 mysmsobserver.java

Import Android.content.Context;
Import Android.database.ContentObserver;
Import Android.database.Cursor;
Import Android.net.Uri;
Import Android.os.Handler;

Import Android.util.Log;
Import Java.util.regex.Matcher;

Import Java.util.regex.Pattern;
/** * Created by Nate on 2015/9/28.


* * public class Mysmsobserver extends Contentobserver {private context mcontext; private Handler Mhandler;
  Public Mysmsobserver (context, Handler Handler) {super (Handler);
  This.mcontext = context;
This.mhandler = handler;

  @Override public void OnChange (Boolean selfchange, Uri uri) {super.onchange (Selfchange, URI);
  if (uri.tostring (). Equals ("Content://sms/raw")) {return;
  Uri Queryuri = Uri.parse ("Content://sms/inbox");
  String code = "";
  Cursor Cursor = Mcontext.getcontentresolver (). query (Queryuri, NULL, NULL, NULL, "date desc"); if (cursor!= null) {if (Cursor.movetofirst ()) {String address = cursor.getstring (Cursor.getcolumnindex ("Addre
      SS ")); StRing message = cursor.getstring (Cursor.getcolumnindex ("body")); TODO:2015/9/28 here can do some of their own judgments, such as only a specific mobile phone number to make judgments log.e ("Guxuewu", "address:==>" + address + "message:==&

      gt; "+ message);
      TODO:2015/9/28 Here you can make a specific regular expression of your own project that is programmed to pattern = Pattern.compile ("(\\d{6})");

      Matcher Matcher = pattern.matcher (message);
        if (Matcher.find ()) {code = matcher.group (0);
      Mhandler.obtainmessage (Mainactivity.msg_receiver_code, CODE). Sendtotarget ();
  } cursor.close ();

 }


}
}

Activity_main.xml

<relativelayout xmlns:android= "http://schemas.android.com/apk/res/android"
xmlns:tools= "http:// Schemas.android.com/tools "
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=". Mainactivity ">


<edittext
  android:id=" @+id/smset "
  android:layout_width=" Wrap_content " android:layout_height= "Wrap_content"
  android:layout_centerhorizontal= "true"
  android:ems= "ten"/>

</RelativeLayout>

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