sms信息的获得

public List<String> getSms() { 
        Uri mSmsQueryUri = Uri.parse("content://sms/inbox"); 
        List<String> messages = new ArrayList<String>(); 
        Cursor cursor = null; 
        try { 
            cursor = mContentResolver.query(mSmsQueryUri, null, null, null, null); 
            if (cursor == null) { 
                Log.i(TAG, "cursor is null. uri: " + mSmsQueryUri); 
                return messages; 
            } 
 
            for (boolean hasData = cursor.moveToFirst(); hasData; hasData = cursor.moveToNext()) { 
                final String body = cursor.getString(cursor.getColumnIndexOrThrow("body")); 
                messages.add(body); 
            } 
        } catch (Exception e) { 
            Log.e(TAG, e.getMessage()); 
        } finally { 
            cursor.close(); 
        } 
        return messages; 
    }