安卓4.4.2网络优先级和默认网络

网络优先级config.xml的路径如下：\android\frameworks\base\core\res\res\values

<string-array translatable="false" name="networkAttributes">

<item>"wifi,1,1,1,-1,true"</item>

<item>"mobile,0,0,0,-1,true"</item>

<item>"mobile_mms,2,0,2,60000,true"</item>

<item>"mobile_supl,3,0,2,60000,true"</item>

<item>"mobile_hipri,5,0,3,60000,true"</item>

<item>"ethernet,9,0,0,-1,true"</item>

<item>"mobile_fota,10,0,2,60000,true"</item>

<item>"mobile_ims,11,0,2,60000,true"</item>

<item>"mobile_cbs,12,0,2,60000,true"</item>

<item>"wifi_p2p,13,1,0,-1,true"</item>

<item>"mobile_ia,14,0,2,-1,true"</item>

</string-array>

注释在frameworks/base/core/java/android/net/NetworkConfig.java

/**

* input string from config.xml resource. Uses the form:

* [Connection name],[ConnectivityManager connection type],

* [associated radio-type],[priority],[dependencyMet]

*/

可见第四项为优先级。

还有判断默认网络

public boolean isDefault() {

return (type == radio);

}

可见第二项和第三项相等则为默认。