短信 转换成 彩信

 

mms/res/values/config.xml
   
    10

 

mms/res/xml/mms_config.xml

   
    true

   
    -1

 

 

packages/apps/Mms/src/com/android/mms/ui/

ComposeMessageActivity.java

updateCounter(){

int[] params = SmsMessage.calculateLength(text, false);
        Log.d("xxxx","calculateLength:params[0]="+params[0]+" ,params[1]="+params[1]+" ,params[2]="+params[2]+" ,params[3]="+params[3]);
            /* SmsMessage.calculateLength returns an int[4] with:
             *   int[0] being the number of SMS's required,
             *   int[1] the number of code units used,
             *   int[2] is the number of code units remaining until the next message.
             *   int[3] is the encoding type that should be used for the message.
             */
        int msgCount = params[0];
        int remainingInCurrentMessage = params[2];
        if (!mIsRcsEnabled) {
            if (!MmsConfig.getMultipartSmsEnabled()) {//enableMultipartSMS   //R.xml.mms_config
                // The provider doesn't support multi-part sms's so as soon as the user types
                // an sms longer than one segment, we have to turn the message into an mms.
                mWorkingMessage.setLengthRequiresMms(msgCount > 1, true);
            } else {
                int threshold = MmsConfig.getSmsToMmsTextThreshold(ComposeMessageActivity.this);//smsToMmsTextThreshold//R.integer.config_max_smstomms
                mWorkingMessage.setLengthRequiresMms(threshold > 0 && msgCount > threshold, true);
            }
        }

        // Show the counter only if:
        // - We are not in MMS mode
        // - We are going to send more than one message OR we are getting close
        boolean showCounter = false;
        if (!workingMessage.requiresMms() &&
                (msgCount > 1 ||
                 remainingInCurrentMessage <= CHARS_REMAINING_BEFORE_COUNTER_SHOWN)) {
            showCounter = true;
        }

}

 

        ret[0] = ted.msgCount;
        ret[1] = ted.codeUnitCount;
        ret[2] = ted.codeUnitsRemaining;
        ret[3] = ted.codeUnitSize;

 

frameworks/opt/telephony/src/java/android/telephony

SmsMessage.java

calculateLength(){

        // this function is for MO SMS
        TextEncodingDetails ted = (useCdmaFormatForMoSms()) ?
            com.android.internal.telephony.cdma.SmsMessage.calculateLength(msgBody, use7bitOnly,
                    true) :
            com.android.internal.telephony.gsm.SmsMessage.calculateLength(msgBody, use7bitOnly);
        int ret[] = new int[4];
        ret[0] = ted.msgCount;
        ret[1] = ted.codeUnitCount;
        ret[2] = ted.codeUnitsRemaining;
        ret[3] = ted.codeUnitSize;

}

 

 

frameworks/opt/telephony/src/java/android/telephony/gsm

SmsMessage.java

calculateLength(){

       GsmAlphabet.TextEncodingDetails ted =
                com.android.internal.telephony.gsm.SmsMessage
                        .calculateLength(messageBody, use7bitOnly);
        int ret[] = new int[4];

}

 

 

frameworks/opt/telephony/src/java/com/android/internal/telephony/gsm

SmsMessage.java

calculateLength(){

        TextEncodingDetails ted = GsmAlphabet.countGsmSeptets(newMsgBody, use7bitOnly);

}

 

 * This class implements the character set mapping between
 * the GSM SMS 7-bit alphabet specified in TS 23.038 6.2.1
 * and UTF-16

 

GsmAlphabet.jafva

countGsmSeptets(){

 int septets = GsmAlphabet.countGsmSeptetsUsingTables(s, use7bitOnly, 0, 0);
            if (septets == -1) {
                return null;
            }
            Rlog.d("xxx", "septets="+septets);
            ted.codeUnitSize = SmsConstants.ENCODING_7BIT;
            ted.codeUnitCount = septets;
            if (septets > SmsConstants.MAX_USER_DATA_SEPTETS) {
                ted.msgCount = (septets + (SmsConstants.MAX_USER_DATA_SEPTETS_WITH_HEADER - 1)) /
                        SmsConstants.MAX_USER_DATA_SEPTETS_WITH_HEADER;
                ted.codeUnitsRemaining = (ted.msgCount *
                        SmsConstants.MAX_USER_DATA_SEPTETS_WITH_HEADER) - septets;
            } else {
                ted.msgCount = 1;
                ted.codeUnitsRemaining = SmsConstants.MAX_USER_DATA_SEPTETS - septets;
            }
            ted.codeUnitSize = SmsConstants.ENCODING_7BIT;

}

 

//计算总共多少个字符

countGsmSeptetsUsingTables(){

 

}