Android紧急号码列表修改

frameworks/base/telephony/java/android/telephony/PhoneNumberUtils.java

public static boolean isEmergencyNumber(String number) {
	//这里判断方法各个平台都有差异，我主要介绍下MTK平台的
	//sim卡插入时，会产生ecclist（即默认的紧急号码）的系统属性值，一般mtk平台，在ril_sim.c中进行修改
	//Read from SIM1
	numbers = SystemProperties.get("ril.ecclist1");
	for(String emergencyNum : numbers.split(",")){
		if((emergencyNum.equals(number) || (emergencyNum + "+").equals(number){
			return true;
		}
	}
	//Read from SIM2
	numbers = SystemProperties.get("ril.ecclist2");
	for(String emergencyNum : numbers.split(",")){
		if((emergencyNum.equals(number) || (emergencyNum + "+").equals(number){
			return true;
		}
	}
	//Read from SIM3
	...
	//Read from SIM4
	...
	
	numbers = SystemProperties.get("ro.ril.ecclist");
	for(String emergencyNum : numbers.split(",")){
		if((emergencyNum.equals(number) || (emergencyNum + "+").equals(number){
			return true;
		}
	}
	
	//从紧急列表中判断
	String　emergencyNumberList = {"112","911","000","08","110","118","120","119","122"};
	...
	//从定制列表中判断
	...
}