STK learning in Android

STK process processing. display_text is used as an example.

1. RIL reports the message.

RIL. Java receives the reported message ril_unsol_stk_proactive_command

Call mstkprocmdregistrant

Stkservice. Java receives the handlemessage msg_id_proactive_command

2. decode the reported data

Call rilmessagedecode to decode the message.

Call the make function of commandparamsfactory to decode

The parsed data has been stored in the text variable of textmessage.

STK decoding function in commandparams. Java commanddetails. Java

Define comprehensiontlvtag in stkservice. Java

Take global card as an Example

D0628103012100820281020D570870B951FB786E8BA48FDB51654E2D56FD79FB52A84E3A60A863D04F9B76845B9E7528670D52A1002C4F539A8C4E305BCC591A5F69768479FB52A865705B57751F6D3BFF0C53D66D8852198FDB5165624B673A754C9762

TS 102 223

D0 proactive UICC command tag

62 length 

81 command details tag

03 command length 

01 command number 

21 00 display text

82 devices identities tag

02 length 

81  source UICC

02  Display

0D text string tag

57  length 

O8 UCS2

Use the make function of commandparamsfactory as the guide to parse byte values. See

(Etsi ts 102 221, etsi ts 102 223 Protocol)

3. The framework reports data to the upper layer.

Processing handlerilmsg messages in stkservice. Java

The command type msg_id_proactive_command will display the text

cmdParams = (CommandParams) rilMsg.mData;

Handle handleproactivecommand

Display_text

It is sent to stkcmdreceiver through stk_effec_action intent type. It is started by changing the value of aggreger.

StkAppService