Android 7.1 双卡双待机器，首选网络类型设置详细分析

首次由preferred_network_mode转换成preferred_network_mode1和preferred_network_mode2是在SubscriptionInfoUpdater类中的handleSimLoaded方法

我们机器设备默认的是：

[ro.telephony.default_network]: [22,20]

但是双sim卡，会对网络进行设置，会有一个设置的过程：

类->方法流程

click选择某张运营商卡为主卡：

IExtTelephony extTelephony =

IExtTelephony.Stub.asInterface(ServiceManager.getService("extphone"));

extTelephony.setPrimaryCardOnSlot(targetSub);

调用ExtTelephony的setPrimaryCardOnSlot方法

-》ExtTelephonyServiceImpl

-》setPrimaryCardOnSlot()

-》QtiPrimaryCardController.getInstance().setPrimaryCardOnSlot(slotId);

-》QtiPrimaryCardController

-》setPrimaryCardOnSlot()

-》synchronized private void setPrimaryCardOnSlot(int primarySlotId, Message msg)

-》在setPrimaryCardOnSlot方法中：

mPrefNwModes = mPriorityHandler.getNwModesFromConfig(primarySlotId);

//通过getNwModesFromConfig获取两种网络模式

for (int i = 0; i < QtiPrimaryCardUtils.PHONE_COUNT; i++) {

saveNwModesToDB(mPrefNwModes[i], i); //保存到数据库重要的一步

}

-》QtiPrimaryCardPriorityHandler

-》getNwModesFromConfig()

-》

for (int i = 0; i < QtiPrimaryCardUtils.PHONE_COUNT; i++) {

if (mCurrPriorityConfigs[i] != null) {

prefNwModes[i] = (i == primarySlotId) ? mCurrPriorityConfigs[i].network1 :

mCurrPriorityConfigs[i].network2;

//获取该类中的mCurrPriorityConfigs的network1和network2

} else {

prefNwModes[i] = defaultNwMode;

}

-》而mCurrPriorityConfigs的计算和获取是通过：

-》loadCurrentPriorityConfigs()

-》

public void loadCurrentPriorityConfigs(boolean override) {

if(!mLoadingConfigCompleted) {

logd("getPrefPrimarySlot: All Config Loading not done. EXIT!!!");

return;

}

if(override || !mLoadingCurrentConfigsDone) {

//get Current Priority config applicable for each slot

for (int i = 0; i < QtiPrimaryCardUtils.PHONE_COUNT; i++) {

mCurrPriorityConfigs[i] = getPriorityConfig(i);

}

mLoadingCurrentConfigsDone = true;

}

-》getPriorityConfig()

-》PriorityConfig pConfig = mAllPriorityConfigs.get(i);

-》 private HashMap<Integer, PriorityConfig> mAllPriorityConfigs =

new HashMap<Integer, PriorityConfig>();

从mAllPriorityConfigs 这个HashMap中来

-》在初始化的时候：

QtiPrimaryCardPriorityHandler(Context context){

mContext = context;

mCurrPriorityConfigs = new PriorityConfig[QtiPrimaryCardUtils.PHONE_COUNT];

tm = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);

readPriorityConfigFromXml();

}

-》readPriorityConfigFromXml()

-》

private void readPriorityConfigFromXml() {

XmlResourceParser parser = null;

try {

Resources res = mContext.getPackageManager().getResourcesForApplication(packageName);

if (res == null) loge("res is null");

int resId = res.getIdentifier(QtiPrimaryCardUtils.getConfigXml(), "xml", packageName);

parser = res.getXml(resId);

//Clear all old configs from hash map.

mAllPriorityConfigs.clear();

mPriorityCount = 0;

XmlUtils.beginDocument(parser, "priority_config");

//2TODO: here we can read the operator config and feed it to pcutils

XmlUtils.nextElement(parser);

while (parser.getEventType() != XmlPullParser.END_DOCUMENT) {

savePriorityConfig(parser);

XmlUtils.nextElement(parser);

}

mLoadingConfigCompleted = true;

} catch (Exception e) {

Rlog.e(LOG_TAG, "Exception while reading priority configs: " + e.getMessage(), e);

mLoadingConfigCompleted = false;

} finally {

logi("mAllPriorityConfigs: " + mAllPriorityConfigs);

if (parser != null) {

parser.close();

}

-》是从QtiPrimaryCardUtils.getConfigXml()中读取xml文件

-》xml的文件名分别是：

public static String getConfigXml() {

if (isBitSetInConfig(ConfigBits.PRIORITY_CONFIG_3)) {

return "priority_config_3";

} else if (isBitSetInConfig(ConfigBits.PRIORITY_CONFIG_2)) {

return "priority_config_2";

} else if (isBitSetInConfig(ConfigBits.PRIORITY_CONFIG_1)) {

return "priority_config_1";

}

return "priority_config_2";

}

-》打开xml文件：

config_3:

<priority_config>

<!--

-->

</priority_config>

config_2:

<priority_config>

</priority_config>

config_1:

<priority_config>

</priority_config>

dengtonglong

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Android 7.1 双卡双待机器，首选网络类型设置 详细分析

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