Android实现短信验证码自动拦截读取功能

本文实例为大家分享了Android短信验证码自动拦截读取 的具体代码，供大家参考，具体内容如下

知识准备：

 1.观察者模式的理解【文章稍后来到~~】
 2.Android的Cursor使用【Android基础】
 3.正则表达式使用【Java基础】
 4.Handler使用【Android基础】 

代码整理：

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 smsEt;
private Handler handler = new Handler() {
 @Override
 public void handleMessage(Message 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;

public class MySmsObserver extends ContentObserver {
private Context mContext;
private Handler mHandler;
public MySmsObserver(Context 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("address"));
   String message = cursor.getString(cursor.getColumnIndex("body"));
   // TODO: 2015/9/28 这里可以根据address做一些自己的判断，比如只有特定的手机号才做判断
   Log.e("guxuewu", "address:==>" + address + " message:==>" + message);
   // TODO: 2015/9/28 这里可以根据自己的项目进行特定的正则表达式的编写 
   Pattern 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="10" />
</RelativeLayout>

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