在Android中收听外发短信或发送框

Question

我正在开发一个应用程序,它将所有传入和传出的短信存储在SD卡的文本文件中.

我能够使用广播接收器收听传入的消息.我发现收听外发短信非常困难.

我知道在某种程度上需要设置发送的盒子或发件箱上的内容观察者,但我不知道该怎么做.

如何才能做到这一点？

Answer 1

基本上,你必须注册一个内容观察者......这样的事情:

ContentResolver contentResolver = context.getContentResolver();
contentResolver.registerContentObserver(Uri.parse("content://sms/out"),true, yourObserver);

yourObserver是一个object(new YourObserver(new Handler())),看起来像这样:

class YourObserver extends ContentObserver {

    public YourObserver(Handler handler) {
        super(handler);
    }

    @Override
    public void onChange(boolean selfChange) {
        super.onChange(selfChange);
        // save the message to the SD card here
    }
}

那么,你究竟如何获得短信的内容？你必须使用Cursor:

// save the message to the SD card here
Uri uriSMSURI = Uri.parse("content://sms/out");
Cursor cur = this.getContentResolver().query(uriSMSURI, null, null, null, null);
 // this will make it point to the first record, which is the last SMS sent
cur.moveToNext();
String content = cur.getString(cur.getColumnIndex("body"));
// use cur.getColumnNames() to get a list of all available columns...
// each field that compounds a SMS is represented by a column (phone number, status, etc.)
// then just save all data you want to the SDcard :)

Answer 2

这是我解决这个问题的方法

1. 创建从其他活动调用的服务

2. 在其中创建内容观察者

    @Override
    public int onStartCommand(Intent intent, int flag, int startId) {
    MyObserver myObserver = new MyObserver(new Handler());
    ContentResolver contentResolver = this.getApplicationContext().getContentResolver();
    contentResolver.registerContentObserver(Uri.parse("content://sms/sent"), true, myObserver);
    return START_STICKY;
    }
   

3. 创建观察者类

   class MyObserver extends ContentObserver {
   
   public MyObserver(Handler handler) {
       super(handler);
   }
   
   @Override
   public void onChange(boolean selfChange) {
       super.onChange(selfChange);
       Uri uriSMSURI = Uri.parse("content://sms/sent");
       Cursor cur = getContentResolver().query(uriSMSURI, null, null, null, null);
       cur.moveToNext();
       String content = cur.getString(cur.getColumnIndex("body"));
       String smsNumber = cur.getString(cur.getColumnIndex("address"));
       if (smsNumber == null || smsNumber.length() <= 0) {
           smsNumber = "Unknown";
       }
       cur.close();
   
       if(smsChecker( "OutgoingSMS to " + smsNumber + ": " + content)) {
           //save data into database/sd card here
       }
   }
   }
   

4. 我添加了一个方法smsChecker()来检查新消息是否与上一条消息相同

   public boolean smsChecker(String sms) {
   boolean flagSMS = true;
   
   if (sms.equals(lastSMS)) {
       flagSMS = false;
   }
   else {
       lastSMS = sms;
   }
   //if flagSMS = true, those 2 messages are different
   return flagSMS;
   }
   

如果我没有弄错的话,我们使用"content:// sms/sent"如果我们只想检查所有发送的消息,"content:// sms/out"如果我们只想检查发件箱内的所有消息,并且"内容:// sms"如果我们想检查所有消息.