Android 利用内容观察者实现短信窃听

时间:2024-04-19 16:04:38

Android 内容观察者的原理》中介绍了内容观察者的一些基本原理,并做了简单的实战,本文接着进一步做一个小项目实战

package com.wuyudong.smslistener;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException; import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.app.Activity;
import android.database.ContentObserver;
import android.database.Cursor;
import android.view.Menu; public class MainActivity extends Activity { @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); Uri uri = Uri.parse("content://sms");
getContentResolver().registerContentObserver(uri, true,
new MyObserver(new Handler())); } private class MyObserver extends ContentObserver { public MyObserver(Handler handler) {
super(handler);
} @Override
public void onChange(boolean selfChange) {
System.out.println("短信数据库发生变化了。");
Uri uri = Uri.parse("content://sms");
Cursor cursor = getContentResolver().query(uri,
new String[] { "body", "address", "date", "type" }, null,
null, "_id desc");
cursor.moveToFirst();
String body = cursor.getString(0);
String address = cursor.getString(1);
String date = cursor.getString(2);
String type = cursor.getString(3); try {
File file = new File(getFilesDir(), "XXX.abc");
FileOutputStream fos = new FileOutputStream(file, true);
fos.write(("内容: " + body + "--地址" + address + "--时间: " + date
+ "--类型" + type + "\n").getBytes());
fos.close();
} catch (Exception e) {
e.printStackTrace();
} super.onChange(selfChange);
}
} }

添加权限:android.permission.READ_SMS

运行代码后,只要短信发生变化,都会提示,并且短信的内容会自动保存在XXX.abc文件中