private ContentObserver newMmsContentObserver = new ContentObserver(new Handler()) { 
  public void onChange(boolean selfChange) { 
    int mNewSmsCount = getNewSmsCount() + getNewMmsCount(); 
  } 
}; 
private void registerObserver() { 
  unregisterObserver(); 
  getContentResolver().registerContentObserver(Uri.parse("content://sms"), true, 
      newMmsContentObserver); 
  getContentResolver().registerContentObserver(MmsSms.CONTENT_URI, true, 
      newMmsContentObserver); 
} 
private synchronized void unregisterObserver() { 
  try { 
    if (newMmsContentObserver != null) { 
      getContentResolver().unregisterContentObserver(newMmsContentObserver); 
    } 
    if (newMmsContentObserver != null) { 
      getContentResolver().unregisterContentObserver(newMmsContentObserver); 
    } 
  } catch (Exception e) { 
    Log.e(TAG, "unregisterObserver fail"); 
  } 
}

得到未讀短信數量：

private int getNewSmsCount() { 
  int result = 0; 
  Cursor csr = getContentResolver().query(Uri.parse("content://sms"), null, 
      "type = 1 and read = 0", null, null); 
  if (csr != null) { 
    result = csr.getCount(); 
    csr.close(); 
  } 
  return result; 
}

獲取未讀彩信數量：

private int getNewMmsCount() { 
  int result = 0; 
  Cursor csr = getContentResolver().query(Uri.parse("content://mms/inbox"), 
      null, "read = 0", null, null); 
  if (csr != null) { 
    result = csr.getCount(); 
    csr.close(); 
  } 
  return result; 
}

二、未接來電

未接來電不能用 Observer監(jiān)聽，不過當有新的未接來電時，系統(tǒng)會發(fā)送一個廣播com.android.phone.NotificationMgr.MissedCall_intent（鎖屏上顯示的未接來電數量就是通知監(jiān)聽這個廣播實現(xiàn)的）

具體功能代碼如下：

final IntentFilter filter = new IntentFilter(); 
filter.addAction("com.android.phone.NotificationMgr.MissedCall_intent"); 
final Application application = getApplication(); 
application.registerReceiver(new BroadcastReceiver() { 
  @Override 
  public void onReceive(Context context, Intent intent) { 
    String action = intent.getAction(); 
    if (action != null && "com.android.phone.NotificationMgr.MissedCall_intent".equals(action)) { 
      int mMissCallCount = intent.getExtras().getInt("MissedCallNumber"); 
    } 
  } 
}, filter);

廣播只是當有新的未接來電時才會發(fā)送，但是如果有舊的未接來電沒有讀取時，上面的廣播就得不到數據了，那就必須得從數據庫中查找了。

功能代碼如下：

private int readMissCall() { 
  int result = 0; 
  Cursor cursor = getContentResolver().query(CallLog.Calls.CONTENT_URI, new String[] { 
      Calls.TYPE 
    }, " type=? and new=?", new String[] { 
        Calls.MISSED_TYPE + "", "1" 
    }, "date desc"); 
 
  if (cursor != null) { 
    result = cursor.getCount(); 
    cursor.close(); 
  } 
  return result; 
}

相信本文所述實例對于大家的Android程序開發(fā)能起到一點參考借鑒作用。

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