androoid framework学习之 - 开启数据开关

转载自http://blog.csdn.net/aaa111/article/details/50059269谢谢博主在Settings->DataUsageSummary中的某个SIMtab下开启数据开关android/packages/apps/Settings/src/com/android/settings/DataUsageSummary.javasetMobileDataEnabled(true);

privateView.OnClickListenermDataEnabledListener=newView.OnClickListener(){

@Override

publicvoidonClick(Viewv){

if(mBinding)return;

finalbooleandataEnabled=!mDataEnabled.isChecked();

finalStringcurrentTab=mCurrentTab;

if(TAB_MOBILE.equals(currentTab)||currentTab.startsWith(TAB_SIM)){

if(dataEnabled){

setMobileDataEnabled(true);

if(mPolicyEditor.getPolicyWarningBytes(mTemplate)==WARNING_DISABLED){

mPolicyEditor.setPolicyWarningBytes(mTemplate,2*GB_IN_BYTES);

}

}else{

//disablingdata;showconfirmationdialogwhicheventually

//callssetMobileDataEnabled()onceuserconfirms.

ConfirmDataDisableFragment.show(DataUsageSummary.this);

}

}

updatePolicy(false);

}

};

[/code]下面这部根据phoneId获得了当前获得了SubIdmTelephonyManager.setDataEnabled(subId[0],enabled);

privatevoidsetMobileDataEnabled(booleanenabled){

if(LOGD)Log.d(TAG,"setMobileDataEnabled()");

//HowaboutexposingsubbasedAPIlikeTelephonyManager.setDataEnabled(intsubId);

if(mCurrentTab.startsWith(TAB_SIM)){

intphoneId=multiSimGetCurrentSub();

//asperphone,settheindividualflag

android.provider.Settings.Global.putInt(getActivity().getContentResolver(),

android.provider.Settings.Global.MOBILE_DATA+phoneId,enabled?1:0);

int[]subId=SubscriptionManager.getSubId(phoneId);

mTelephonyManager.setDataEnabled(subId[0],enabled);

}else{

mTelephonyManager.setDataEnabled(enabled);

mMobileDataEnabled=enabled;

}

updatePolicy(false);

}

[/code]frameworks/base数据开关都会调用到TelephonyManager.setDataEnabled()，不管是从流量使用情况还是从下拉的“快速设置”（QuickSetting）里打开（这里会在后面补充说明）android/frameworks/base/telephony/java/android/telephony/TelephonyManager.javagetITelephony().setDataEnabled(subId,enable);

/**@hide*/

@SystemApi

publicvoidsetDataEnabled(intsubId,booleanenable){

try{

AppOpsManagerappOps=(AppOpsManager)mContext.getSystemService(Context.APP_OPS_SERVICE);

if(enable){

if(appOps.noteOp(AppOpsManager.OP_DATA_CONNECT_CHANGE)!=AppOpsManager.MODE_ALLOWED){

Log.w(TAG,"Permissiondeniedbyuser.");

return;

}

}

Log.d(TAG,"setDataEnabled:enabled="+enable);

getITelephony().setDataEnabled(subId,enable);

}catch(RemoteExceptione){

Log.e(TAG,"ErrorcallingsetDataEnabled",e);

}

}

[/code]android/packages/services/Telephony/src/com/android/phone/PhoneInterfaceManager.java到这里才是设置phone的数据开启phone.setDataEnabled(enable);

/**

*Setmobiledataenabled

*Usedbytheuserthroughsettingsetctoturnon/offmobiledata

*

*@paramenable{@codetrue}turnturndataon,else{@codefalse}

*/

@Override

publicvoidsetDataEnabled(intsubId,booleanenable){

enforceModifyPermission();

intphoneId=mSubscriptionController.getPhoneId(subId);

log("getDataEnabled:subId="+subId+"phoneId="+phoneId);

Phonephone=PhoneFactory.getPhone(phoneId);

if(phone!=null){

log("setDataEnabled:subId="+subId+"enable="+enable);

phone.setDataEnabled(enable);

}else{

loge("setDataEnabled:nophoneforsubId="+subId);

}

}

[/code]android/frameworks/opt/telephony/src/java/com/android/internal/telephony/gsm/GSMPhone.javamDcTracker.setDataEnabled(enable);

@Override

publicvoidsetDataEnabled(booleanenable){

mDcTracker.setDataEnabled(enable);

}

[/code]android/rameworks/opt/telephony/src/java/com/android/internal/telephony/dataconnection/DcTrackerBase.java发送打开数据开关的消息CMD_SET_USER_DATA_ENABLEMessagemsg=obtainMessage(DctConstants.CMD_SET_USER_DATA_ENABLE);

/**

*Modify{@linkandroid.provider.Settings.Global#MOBILE_DATA}value.

*/

publicvoidsetDataEnabled(booleanenable){

Messagemsg=obtainMessage(DctConstants.CMD_SET_USER_DATA_ENABLE);

msg.arg1=enable?1:0;

sendMessage(msg);

}

[/code]处理消息onSetUserDataEnabled(enabled);

@Override

publicvoidhandleMessage(Messagemsg){

switch(msg.what){

caseAsyncChannel.CMD_CHANNEL_DISCONNECTED:{

log("DISCONNECTED_CONNECTED:msg="+msg);

DcAsyncChanneldcac=(DcAsyncChannel)msg.obj;

mDataConnectionAcHashMap.remove(dcac.getDataConnectionIdSync());

dcac.disconnected();

break;

}

...

caseDctConstants.CMD_SET_USER_DATA_ENABLE:{

finalbooleanenabled=(msg.arg1==DctConstants.ENABLED)?true:false;

if(DBG)log("CMD_SET_USER_DATA_ENABLEenabled="+enabled);

onSetUserDataEnabled(enabled);

break;

}

...

[/code]onTrySetupData(Phone.REASON_DATA_ENABLED);

protectedvoidonSetUserDataEnabled(booleanenabled){

synchronized(mDataEnabledLock){

if(mUserDataEnabled!=enabled){

mUserDataEnabled=enabled;

Settings.Global.putInt(mPhone.getContext().getContentResolver(),

Settings.Global.MOBILE_DATA+mPhone.getPhoneId(),enabled?1:0);

if(getDataOnRoamingEnabled()==false&&

mPhone.getServiceState().getRoaming()==true){

if(enabled){

notifyOffApnsOfAvailability(Phone.REASON_ROAMING_ON);

}else{

notifyOffApnsOfAvailability(Phone.REASON_DATA_DISABLED);

}

}

if(enabled){

onTrySetupData(Phone.REASON_DATA_ENABLED);

}else{

onCleanUpAllConnections(Phone.REASON_DATA_SPECIFIC_DISABLED);

}

}

}

}

[/code]android/frameworks/opt/telephony/src/java/com/android/internal/telephony/dataconnection/DcTracker.javasetupDataOnConnectableApns(reason);

@Override

//TODO:Weshouldntneedthis.

protectedbooleanonTrySetupData(Stringreason){

if(DBG)log("onTrySetupData:reason="+reason);

setupDataOnConnectableApns(reason);

returntrue;

}

[/code]trySetupData(apnContext);

privatevoidsetupDataOnConnectableApns(Stringreason){

if(DBG)log("setupDataOnConnectableApns:"+reason);

for(ApnContextapnContext:mPrioritySortedApnContexts){

if(DBG)log("setupDataOnConnectableApns:apnContext"+apnContext);

if(apnContext.getState()==DctConstants.State.FAILED){

apnContext.setState(DctConstants.State.IDLE);

}

if(apnContext.isConnectable()){

log("setupDataOnConnectableApns:isConnectable()calltrySetupData");

apnContext.setReason(reason);

trySetupData(apnContext);

}

}

}

[/code]下面这个方法比较长，有很多条件的检查booleanretValue=setupData(apnContext,radioTech);

privatebooleantrySetupData(ApnContextapnContext){

...

if(apnContext.isConnectable()&&(isEmergencyApn||

(isDataAllowed(apnContext)&&

getAnyDataEnabled(checkUserDataEnabled)&&!isEmergency()))){

if(apnContext.getState()==DctConstants.State.FAILED){

if(DBG)log("trySetupData:makeaFAILEDApnContextIDLEsoitsreusable");

apnContext.setState(DctConstants.State.IDLE);

}

intradioTech=mPhone.getServiceState().getRilDataRadioTechnology();

if(apnContext.getState()==DctConstants.State.IDLE){

ArrayList<ApnSetting>waitingApns=buildWaitingApns(apnContext.getApnType(),

radioTech);

if(waitingApns.isEmpty()){

notifyNoData(DcFailCause.MISSING_UNKNOWN_APN,apnContext);

notifyOffApnsOfAvailability(apnContext.getReason());

if(DBG)log("trySetupData:XNoAPNfoundretValue=false");

returnfalse;

}else{

apnContext.setWaitingApns(waitingApns);

if(DBG){

log("trySetupData:CreatefrommAllApnSettings:"

+apnListToString(mAllApnSettings));

}

}

}

if(DBG){

log("trySetupData:callsetupData,waitingApns:"

+apnListToString(apnContext.getWaitingApns()));

}

booleanretValue=setupData(apnContext,radioTech);//7

notifyOffApnsOfAvailability(apnContext.getReason());

if(DBG)log("trySetupData:XretValue="+retValue);

returnretValue;

}else{

if(!apnContext.getApnType().equals(PhoneConstants.APN_TYPE_DEFAULT)

&&apnContext.isConnectable()){

mPhone.notifyDataConnectionFailed(apnContext.getReason(),apnContext.getApnType());

}

notifyOffApnsOfAvailability(apnContext.getReason());

if(DBG)log("trySetupData:XapnContextnot'ready'retValue=false");

returnfalse;

}

}

[/code]

dcac.bringUp(apnContext,getInitialMaxRetry(),profileId,radioTech,mAutoAttachOnCreation,

msg);

privatebooleansetupData(ApnContextapnContext,intradioTech){

if(DBG)log("setupData:apnContext="+apnContext);

ApnSettingapnSetting;

DcAsyncChanneldcac=null;

apnSetting=apnContext.getNextWaitingApn();

if(apnSetting==null){

if(DBG)log("setupData:returnfornoapnfound!");

returnfalse;

}

intprofileId=apnSetting.profileId;

if(profileId==0){

profileId=getApnProfileID(apnContext.getApnType());

}

//OnCDMA,ifwe'reexplicitlyaskingforDUN,weneedhave

//adun-profiledconnectionsowecan'tshareanexistingone

//OnGSM/LTEwecanshareexistingapnconnectionsprovidedtheysupport

//thistype.

if(apnContext.getApnType()!=PhoneConstants.APN_TYPE_DUN||

teardownForDun()==false){

dcac=checkForCompatibleConnectedApnContext(apnContext);

if(dcac!=null){

//GetthedcacApnSettingfortheconnectionwewanttoshare.

ApnSettingdcacApnSetting=dcac.getApnSettingSync();

if(dcacApnSetting!=null){

//Settingisgood,souseit.

apnSetting=dcacApnSetting;

}

}

}

if(dcac==null){

if(isOnlySingleDcAllowed(radioTech)){

if(isHigherPriorityApnContextActive(apnContext)){

if(DBG){

log("setupData:HigherpriorityApnContextactive.Ignoringcall");

}

returnfalse;

}

//Onlylowerprioritycallsleft.DisconnectthemallinthissinglePDPcase

//sothatwecanbringuptherequestedhigherprioritycall(oncewereceive

//repsonsefordeactivaterequestforthecallsweareabouttodisconnect

if(cleanUpAllConnections(true,Phone.REASON_SINGLE_PDN_ARBITRATION)){

//Ifanycallactuallyrequestedtobedisconnected,meanswecan't

//bringupthisconnectionyetasweneedtowaitforthosedatacalls

//tobedisconnected.

if(DBG)log("setupData:Somecallsaredisconnectingfirst.Waitandretry");

returnfalse;

}

//Noothercallsareactive,soproceed

if(DBG)log("setupData:Singlepdp.Continuesettingupdatacall.");

}

dcac=findFreeDataConnection();

if(dcac==null){

dcac=createDataConnection();

}

if(dcac==null){

if(DBG)log("setupData:NofreeDataConnectionandcouldn'tcreateone,WEIRD");

returnfalse;

}

}

if(DBG)log("setupData:dcac="+dcac+"apnSetting="+apnSetting);

apnContext.setDataConnectionAc(dcac);

apnContext.setApnSetting(apnSetting);

apnContext.setState(DctConstants.State.CONNECTING);

mPhone.notifyDataConnection(apnContext.getReason(),apnContext.getApnType());

Messagemsg=obtainMessage();

msg.what=DctConstants.EVENT_DATA_SETUP_COMPLETE;

msg.obj=apnContext;

dcac.bringUp(apnContext,getInitialMaxRetry(),profileId,radioTech,mAutoAttachOnCreation,

msg);//8

if(DBG)log("setupData:initing!");

returntrue;

}

[/code]android/frameworks/opt/telephony/src/java/com/android/internal/telephony/dataconnection/DcAsyncChannel.javasendMessage

/**

*BringupaconnectiontotheapnandreturnanAsyncResultinonCompletedMsg.

*UsedforcellularnetworksthatuseAcesssPointNames(APN)such

*asGSMnetworks.

*

*@paramapnContextistheAccessPointNametobringupaconnectionto

*@paraminitialMaxRetrythenumberofretiresforinitialbringup.

*@paramprofileIdfortheconneciton

*@paramonCompletedMsgissentwithitsmsg.objasanAsyncResultobject.

*WithAsyncResult.userObjsettotheoriginalmsg.obj,

*AsyncResult.result=FailCauseandAsyncResult.exception=Exception().

*/

publicvoidbringUp(ApnContextapnContext,intinitialMaxRetry,intprofileId,

intrilRadioTechnology,booleanretryWhenSSChange,MessageonCompletedMsg){

if(DBG){

log("bringUp:apnContext="+apnContext+"initialMaxRetry="+initialMaxRetry

+"onCompletedMsg="+onCompletedMsg);

}

sendMessage(DataConnection.EVENT_CONNECT,//9

newConnectionParams(apnContext,initialMaxRetry,profileId,

rilRadioTechnology,retryWhenSSChange,onCompletedMsg));

}

[/code]android/frameworks/opt/telephony/src/java/com/android/internal/telephony/dataconnection/DataConnection.java这其实是个状态即机StateMachine，这个类或者或机制，本身也比较复杂，以后看明白了以后会单独在写一篇文章现在是进入其中一个状态DcInactiveState。DcInactiveStateprocessmesssageonConnect(mConnectionParams);

/**

*ThestatemachineisinactiveandexpectsaEVENT_CONNECT.

*/

privateclassDcInactiveStateextendsState{

...

@Override

publicbooleanprocessMessage(Messagemsg){

...

caseEVENT_CONNECT:

if(DBG)log("DcInactiveState:mag.what=EVENT_CONNECT");

ConnectionParamscp=(ConnectionParams)msg.obj;

if(initConnection(cp)){

onConnect(mConnectionParams);//10

transitionTo(mActivatingState);

}else{

if(DBG){

log("DcInactiveState:msg.what=EVENT_CONNECTinitConnectionfailed");

}

notifyConnectCompleted(cp,DcFailCause.UNACCEPTABLE_NETWORK_PARAMETER,

false);

}

retVal=HANDLED;

break;

[/code]mPhone.mCi.setupDataCall

/**

*Beginsettingupadataconnection,callssetupDataCall

*andtheConnectionParamswillbereturnedwiththe

*EVENT_SETUP_DATA_CONNECTION_DONEAsyncResul.userObj.

*

*@paramcpistheconnectionparameters

*/

privatevoidonConnect(ConnectionParamscp){

if(DBG)log("onConnect:carrier='"+mApnSetting.carrier

+"'APN='"+mApnSetting.apn

+"'proxy='"+mApnSetting.proxy+"'port='"+mApnSetting.port+"'");

//Checkifweshouldfakeanerror.

if(mDcTesterFailBringUpAll.getDcFailBringUp().mCounter>0){

...

}

mCreateTime=-1;

mLastFailTime=-1;

mLastFailCause=DcFailCause.NONE;

//Thedataprofile'sprofileIDmustbesetwhenitiscreated.

intdataProfileId;

if(mApnSetting.getApnProfileType()==ApnProfileType.PROFILE_TYPE_OMH){

dataProfileId=mApnSetting.getProfileId()+RILConstants.DATA_PROFILE_OEM_BASE;

log("OMHprofile,dataProfileid="+dataProfileId);

}else{

dataProfileId=cp.mProfileId;

}

//msg.objwillbereturnedinAsyncResult.userObj;

Messagemsg=obtainMessage(EVENT_SETUP_DATA_CONNECTION_DONE,cp);

msg.obj=cp;

ead3intauthType=mApnSetting.authType;

if(authType==-1){

authType=TextUtils.isEmpty(mApnSetting.user)?RILConstants.SETUP_DATA_AUTH_NONE

:RILConstants.SETUP_DATA_AUTH_PAP_CHAP;

}

Stringprotocol;

if(mPhone.getServiceState().getRoaming()){

protocol=mApnSetting.roamingProtocol;

}else{

protocol=mApnSetting.protocol;

}

mPhone.mCi.setupDataCall(//11

Integer.toString(cp.mRilRat+2),

Integer.toString(dataProfileId),

mApnSetting.apn,mApnSetting.user,mApnSetting.password,

Integer.toString(authType),

protocol,msg);

}

[/code]android/frameworks/opt/telephony/src/java/com/android/internal/telephony/RIL.java